Welcome to the Space Calendar!

Created in 1994, this Space Calendar covers space-related activities
and anniversaries for the upcoming year. It is also available on the
web at:

http://www.jpl.nasa.gov/calendar/

The online version of the Space Calendar includes over 5,300 links to related websites.

This calendar is compiled and maintained by Ron Baalke. Please send any updates or corrections to [email protected]. Note that launch dates
are subject to change at any time. Also, note that anniversary dates are listed in 5 year increments only.

The following people have contributed to this month's calendar:

o Thomas Schiller

Follow me on Twitter: https://twitter.com/RonBaalke


=========================
SPACE CALENDAR
April 22, 2018
=========================

* indicates changes from last month's calendar.

April 2018
Apr 22 - Earth Day
Apr 22 - Lyrids Meteor Shower Peak
Apr 22 - Tesla Roadster At Opposition (0.166 AU)
Apr 22 - Apollo Asteroid 2018 CY Near-Earth Flyby (0.097 AU)
Apr 22 - Asteroid 11246 Orvillewright Closest Approach To Earth (1.882 AU)
Apr 22 - Asteroid 2097 Galle Closest Approach To Earth (2.675 AU)
Apr 22 - Miguel Hurtado's 40th Birthday (1978)
Apr 23 - Comet 300P/Catalina Closest Approach To Earth (1.563 AU)
Apr 23 - Comet P/2012 O1 (McNaught) At Opposition (2.177 AU)
Apr 23 - Comet 147P/Kushida-Muramatsu At Opposition (3.301 AU)
* Apr 23 - Apollo Asteroid 2018 GG4 Near-Earth Flyby (0.025 AU)
Apr 23 - Aten Asteroid 2012 XL16 Near-Earth Flyby (0.041 AU)
Apr 23 - Aten Asteroid 2017 HF1 Near-Earth Flyby (0.061 AU)
Apr 23 - Apollo Asteroid 2015 XF352 Near-Earth Flyby (0.090 AU)
Apr 23 - Asteroid 400796 Douglass Closest Approach To Earth (1.803 AU)
Apr 23 - Asteroid 52301 Qumran Closest Approach To Earth (1.839 AU)
Apr 23 - Asteroid 6001 Thales Closest Approach To Earth (1.863 AU)
Apr 23 - Asteroid 5000 IAU Closest Approach To Earth (2.202 AU)
Apr 23 - Max Planck's 160th Birthday (1858)
Apr 24 - Moon Occults Regulus
Apr 24 - Asteroid 4 Vesta Occults 2UCAC 25156525 (12.5 Magnitude Star)
* Apr 24 - Amor Asteroid 2018 GD3 Near-Earth Flyby (0.064 AU)
* Apr 24 - Apollo Asteroid 2018 GF2 Near-Earth Flyby (0.070 AU)
Apr 24 - Apollo Asteroid 469219 (2016 HO3) Closest Approach To Earth (0.145 AU)
Apr 24 - Asteroid 7986 Romania Closest Approach To Earth (0.969 AU)
Apr 24 - Asteroid 232 Russia Closest Approach To Earth (1.113 AU)
Apr 24 - Asteroid 19367 Pink Floyd Closest Approach To Earth (1.842 AU)
Apr 24 - Kuiper Belt Object 42355 Typhon At Opposition (20.615 AU)
Apr 25 - Sentinel 3B Rokot-KM Launch
Apr 25 - Comet 169P/NEAT Closest Approach To Earth (1.604 AU)
Apr 25 - Comet 222P/LINEAR Closest Approach To Earth (2.885 AU)
Apr 25 - Comet 33P/Daniel At Opposition (3.393 AU)
Apr 25 - Comet P/2003 T12 (SOHO) At Opposition (3.582 AU)
Apr 25 - Comet C/2017 B3 (LINEAR) At Opposition (3.972 AU)
* Apr 25 - Apollo Asteroid 2018 GH Near-Earth Flyby (0.037 AU)
Apr 25 - Apollo Asteroid 2018 EY3 Near-Earth Flyby (0.088 AU)
Apr 25 - Apollo Asteroid 4581 Asciepius Closest Approach To Earth (0.293 AU)
Apr 25 - Asteroid 3350 Scobee Closest Approach To Earth (1.441 AU)
Apr 25 - Asteroid 17023 Abbott Closest Approach To Earth (1.446 AU)
Apr 25 - Asteroid 6123 Aristoteles Closest Approach To Earth (1.448 AU)
Apr 25 - Asteroid 268242 Pebble Closest Approach To Earth (1.497 AU)
Apr 25 - Asteroid 827 Wolfiana Closest Approach To Earth (1.586 AU)
Apr 25 - Asteroid 248750 Asteroidday Closest Approach To Earth (2.138 AU)
Apr 25 - Asteroid 21564 Widmanstatten Closest Approach To Earth (2.664 AU)
* Apr 26 - Zhuhai-1 03 & 04 CZ-11 Launch
Apr 26 - Comet 334P/NEAT Closest Approach To Earth (3.583 AU)
Apr 26 - Comet C/2017 E3 (PANSTARRS) Closest Approach To Earth (5.356 AU)
* Apr 26 - Aten Asteroid 2018 HP Near-Earth Flyby (0.030 AU)
Apr 26 - Amor Asteroid 450648 (2006 UC63) Near-Earth Flyby (0.082 AU)
Apr 26 - 20th Anniversary (1998), Cassini, Venus Flyby
Apr 26 - 25th Anniversary (1993), STS-55 Launch (Space Shuttle Columbia, Spacelab-D2)
Apr 26 - Anro Penzias' 85th Birthday (1933)
Apr 26 - 170th Anniversary (1848), Andrew Graham's Discovery of Asteroid 9 Metis
Apr 26 - 215th Anniversary (1803), L'Aigle Meteorite Shower (Hit House in France)
Apr 27 - Comet P/2011 CR42 (Catalina) At Opposition (1.539 AU)
Apr 27 - Comet 313P/Gibbs At Opposition (2.713 AU)
* Apr 27 - Apollo Asteroid 2018 GH5 Near-Earth Flyby (0.031 AU)
* Apr 27 - Apollo Asteroid 2018 GB2 Near-Earth Flyby (0.044 AU)
Apr 27 - Apollo Asteroid 444193 (2005 SE71) Near-Earth Flyby (0.062 AU)
Apr 27 - Amor Asteroid 194126 (2001 SG276) Near-Earth Flyby (0.084 AU)
Apr 27 - Apollo Asteroid 5786 Talos Closest Approach To Earth (0.792 AU)
Apr 27 - Asteroid 3773 Smithsonian Closest Approach To Earth (1.423 AU)
Apr 27 - Asteroid 8146 Jimbell Closest Approach To Earth (1.955 AU)
Apr 27 - Philip Abelson's 105th Birthday (1913)
Apr 28 - Moon Occults Asteroid 21 Lutetia
Apr 28 - Comet P/2017 B4 (PANSTARRS) Closest Approach To Earth (2.914 AU)
Apr 28 - Comet 202P/Scotti At Opposition (3.199 AU)
Apr 28 - Comet 191P/McNaught At Opposition (3.968 AU)
Apr 28 - Comet P/2008 WZ96 (LINEAR) At Opposition (4.122 AU)
* Apr 28 - Amor Asteroid 2018 GO2 Near-Earth Flyby (0.061 AU)
Apr 28 - Asteroid 1818 Brahms Closest Approach To Earth (1.252 AU)
Apr 28 - Asteroid 16481 Thames Closest Approach To Earth (2.135 AU)
Apr 28 - 15th Anniversary (2003), Galaxy Evolution Explorer (GALEX) Launch
Apr 28 - Eugene Shoemaker's 90th Birthday (1928)
Apr 28 - Eberhard Rees' 110th Birthday (1908)
Apr 29 - Mercury At Its Greatest Western Elongation (27 Degrees)
Apr 29 - Comet 45P/Honda-Mrkos-Pajdusakov At Oppositon (3.554 AU)
Apr 29 - Comet P/2017 D4 (PANSTARRS) At Opposition (4.139 AU)
Apr 29 - Apollo Asteroid 2013 US3 Near-Earth Flyby (0.026 AU)
Apr 29 - Aten Asteroid 2002 JR100 Near-Earth Flyby (0.028 AU)
* Apr 29 - Apollo Asteroid 2018 GO4 Near-Earth Flyby (0.030 AU)
* Apr 29 - Apollo Asteroid 2018 GY1 Near-Earth Flyby (0.034 AU)
* Apr 29 - Amor Asteroid 2018 FV4 Near-Earth Flyby (0.045 AU)
Apr 29 - Asteroid 4659 Roddenberry Closest Approach To Earth (1.878 AU)
Apr 29 - Asteroid 4749 Ledzepplin Closest Approach To Earth (2.315 AU)
Apr 29 - Asteroid 5870 Baltimore Closest Approach To Earth (2.948 AU)
* Apr 29 - Kuiper Belt Object 2014 FC69 At Opposition (83.748 AU)
Apr 29 - Nikolai Budarin's 65th Birthday (1953)
Apr 29 - Harold Urey's 125th Birthday (1893)
Apr 30 - Moon Occults Asteroid 16 Psyche
Apr 30 - Comet 169P/NEAT Perihelion (0.604 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) Closest Approach To Earth (6.259 AU)
Apr 30 - Comet C/2017 K1 (PANSTARRS) At Opposition (6.259 AU)
Apr 30 - Comet C/2015 XY1 (Lemmon) Perihelion (7.928 AU)
Apr 30 - Asteroid 42981 Jenniskens Closest Approach To Earth (1.176 AU)
Apr 30 - Asteroid 2700 Baikonur Closest Approach To Earth (1.981 AU)
Apr 30 - Asteroid 2801 Huygens Closest Approach To Earth (2.082 AU)

May 2018
May ?? - Moon Express (MX-1E-1) Electron Launch
May ?? - GPS 3A-2 Falcon 9 Launch
May ?? - GEO-KOMPSAT-2A Ariane 5 Launch
May ?? - IRNSS-1I PSLV-XL Launch
May ?? - BeiDou-3 (M9 & M10) CZ-3C/YZ-1 Launch
May ?? - GLONASS-M 759 Soyuz-2.1b/Fregat-M Launch
* May ?? - CICERO/Outernet 1/Lemur-2 Electron Launch
May ?? - Edward Cooper's 220th Birthday (1798)
May 01 - Comet P/2011 CR42 (Catalina) Closest Approach To Earth (1.537 AU)
May 01 - Comet 330P/Catalina At Opposition (4.022 AU)
May 01 - Amor Asteroid 2018 DX3 Near-Earth Flyby (0.081 AU)
May 01 - Asteroid 4330 Vivaldi Closest Approach To Earth (1.318 AU)
May 01 - Asteroid 51828 Ilanramon Closest Approach To Earth (2.011 AU)
May 01 - Asteroid 13688 Oklahoma Closest Approach To Earth (2.134 AU)
May 01 - 20th Anniversary (1998), Discovery of Dar al Gani 476 Meteorite in Sahara Desert (Mars Meteorite)
* May 02 - Gaofen 5 (GF 5) CZ-4C Launch
May 02 - Comet 169P/NEAT At Opposition (1.609 AU)
May 02 - Comet 334P/NEAT At Opposition (3.588 AU)
May 02 - Asteroid 9885 Linux Closest Approach To Earth (1.447 AU)
May 02 - Asteroid 4047 Chang'E Closest Approach To Earth (1.852 AU)
May 02 - Asteroid 5471 Tunguska Closest Approach To Earth (1.880 AU)
May 02 - Asteroid 16626 Thumper Closest Approach To Earth (1.928 AU)
May 02 - Asteroid 2099 Opik Closest Approach To Earth (2.044 AU)
May 02 - Asteroid 9860 Archaeopteryx Closest Approach To Earth (2.146 AU)
May 02 - Kuiper Belt Object 2010 EK139 At Opposition (35.418 AU)
May 02 - Robert Wood's 150th Birthday (1868)
May 03 - Comet 313P/Gibbs Closest Approach To Earth (2.708 AU)
May 03 - Comet C/2017 E3 (PANSTARRS) At Opposition (5.365 AU)
May 03 - Amor Asteroid 2015 JP Near-Earth Flyby (0.097 AU)
May 03 - Asteroid 10866 Peru Closest Approach To Earth (1.193 AU)
May 03 - Asteroid 4122 Ferrari Closest Approach To Earth (1.442 AU)
May 03 - Asteroid 9134 Encke Closest Approach To Earth (1.909 AU)
May 03 - Asteroid 3325 TARDIS Closest Approach To Earth (2.177 AU)
May 03 - Asteroid 13677 Alvin Closest Approach To Earth (2.373 AU)
May 03 - Asteroid 13897 Vesuvius Closest Approach To Earth (2.960 AU)
May 03 - Steven Weinberg's 85th Birthday (1933)
May 03 - Ernst Hartwig's 95th Birthday (1923)
May 04 - Space Day
May 04 - Star Wars Day
* May 04 - Bangabandhu-1 Falcon 9 Launch
May 04 - Comet 37P/Forbes Perihelion (1.610 AU)
May 04 - Comet 30P/Reinmuth At Opposition (1.816 AU)
May 04 - Apollo Asteroid 2017 WY14 Near-Earth Flyby (0.052 AU)
* May 04 - Apollo Asteroid 2012 SR56 Near-Earth Flyby (0.064 AU)
* May 04 - Apollo Asteroid 2018 HC Near-Earth Flyby (0.076 AU)
May 04 - Asteroid 17898 Scottsheppard Closest Approach To Earth (1.101 AU)
May 04 - Jean-Charles de Borda's 285th Birthday (1733)
May 04 - Jean-Philippe de Cheseaux's 300th Birthday (1718)
May 05 - InSight/Mars Cube One 1 & 2 Atlas 5 Launch (Mars Lander)
May 05 - National Astronaut Day
May 05 - Eta Aquarids Meteor Shower Peak
* May 05 - Amor Asteroid 2018 GW Near-Earth Flyby (0.056 AU)
May 05 - Asteroid 8299 Tealeoni Closest Approach To Earth (0.956 AU)
May 05 - Asteroid 9342 Carygrant Closest Approach To Earth (1.568 AU)
May 05 - Asteroid 12846 Fullerton Closest Approach To Earth (2.095 AU)
May 05 - Albert Marth's 190th Birthday (1828)
* May 06 - Apstar 6C CZ-3B/E Launch
May 06 - Comet 107P/Wilson-Harrington Closest Approach To Earth (1.688 AU)
May 06 - Comet 304P/Ory At Opposition (3.926 AU)
May 06 - Apollo Asteroid 1685 Toro Closest Approach To Earth (0.972 AU)
May 06 - Asteroid 8283 Edinburgh Closest Approach To Earth (2.037 AU)
May 06 - Asteroid 2476 Andersen Closest Approach To Earth (2.210 AU)
May 06 - Carl Hergenrother's 45th Birthday (1973)
May 06 - Grove Gilbert's 175th Birthday (1843)
May 07 - Comet 143P/Kowal-Mrkos Perihelion (2.532 AU)
May 07 - Comet P/2000 R2 (LINEAR) Closest Approach To Earth (2.591 AU)
May 07 - Comet 350P/McNaught Closest Approach To Earth (2.753 AU)
May 07 - Comet 350P/McNaught At Opposition (2.753 AU)
May 07 - Comet C/2016 S1 (PANSTARRS) At Opposition (3.266 AU)
May 07 - Comet C/2017 A1 (PANSTARRS) At Opposition (3.787 AU)
May 07 - Apollo Asteroid 1999 FN19 Near-Earth Flyby (0.025 AU)
* May 07 - Apollo Asteroid 2018 GX Near-Earth Flyby (0.065 AU)
May 07 - Asteroid 4433 Goldstone Closest Approach To Earth (1.499 AU)
May 07 - Apollo Asteroid 11311 Peleus Closest Approach To Earth (1.742 AU)
May 07 - Kuiper Belt Object 2010 FX86 At Opposition (45.160 AU)
May 08 - Comet 253P/PANSTARRS Perihelion (2.037 AU)
May 08 - Comet 254P/McNaught At Opposition (4.181 AU)
May 08 - Asteroid 21 Lutetia Occults TYC 4950-00415-1 (11.7 Magnitude Star)
May 08 - Apollo Asteroid 2016 JQ5 Near-Earth Flyby (0.016 AU)
May 08 - Asteroid 2709 Sagan Closest Approach To Earth (1.063 AU)
May 08 - Asteroid 16857 Goodall Closest Approach To Earth (1.622 AU)
May 08 - Apollo Asteroid 3103 Eger Closest Approach To Earth (1.753 AU)
May 08 - Centaur Object 144908 (2004 YH32) At Opposition (11.685 AU)
May 09 - Jupiter At Opposition
May 09 - Comet C/2016 R2 (PANSTARRS) Perihelion (2.602 AU)
May 09 - Comet 348P/PANSTARRS Closest Approach To Earth (2.870 AU)
May 09 - Comet P/1999 RO28 (LONEOS) At Opposition (2.929 AU)
May 09 - Apollo Asteroid 388945 (2008 TZ3) Near-Earth Flyby (0.017 AU)
May 09 - Asteroid 12397 Peterbrown Closest Approach To Earth (1.953 AU)
May 09 - Asteroid 12760 Maxwell Closest Approach To Earth (2.139 AU)
May 09 - 15th Anniversary (2003), Hayabusa Launch (Japan Asteroid Sample Return Mission)
May 10 - Comet P/2017 B4 (PANSTARRS) At Opposition (2.933 AU)
May 10 - Comet 260P/McNaught At Opposition (3.169 AU)
May 10 - Comet 230P/LINEAR At Opposition (4.175 AU)
May 10 - Asteroid 243 Ida Occults TYC 6810-00664-1 (9.9 Magnitude Star)
May 10 - Asteroid 19155 Lifeson Closest Approach To Earth (2.026 AU)
May 10 - Asteroid 9357 Venezuela Closest Approach To Earth (2.102 AU)
May 10 - Asteroid 1501 Baade Closest Appraoch To Earth (2.115 AU)
May 10 - Kuiper Belt Object 90568 (2004 GV9) At Opposition (38.560 AU)
May 10 - Augustin-Jean Frensel's 230th Birthday (1788)
May 11 - Comet 255P/Levy Closest Approach To Earth (2.658 AU)
* May 11 - Apollo Asteroid 2018 GR2 Near-Earth Flyby (0.034 AU)
May 11 - Richard Feynman's 100th Birthday (1918)
May 12 - Mercury Passes 2.4 Degrees From Uranus
May 12 - Comet 168P/Hergenrother At Opposition (3.043 AU)
May 12 - Comet 322P/SOHO At Opposition (3.605 AU)
May 12 - Atira Asteroid 434326 (2004 JG6) Closest Approach To Earth (0.937 AU)
May 12 - Asteroid 128523 Johnmuir Closest Approach To Earth (1.775 AU)
May 12 - John Hind's 195th Birthday (1823)
May 13 - Asteroid 2874 Jim Young Closest Approach To Earth (1.532 AU)
May 13 - Asteroid 15495 Bogie Closest Approach To Earth (2.119 AU)
May 13 - Alexis-Claude Clairaut's 305th Birthday (1713)
May 14 - Comet 227P/Catalina-LINEAR Closest Approach To Earth (2.152 AU)
May 14 - Comet 348P/PANSTARRS At Opposition (2.874 AU)
May 14 - Comet 113P/Spitaler At Opposition (4.203 AU)
May 14 - Asteroid 6336 Dodo Closest Approach To Earth (1.675 AU)
May 14 - Asteroid 16 Psyche Closest Approach To Earth (2.2388888888 AU)
May 14 - Asteroid 4255 Spacewatch Closest Approach To Earth (2.422 AU)
May 14 - Asteroid 580 Selene Closest Approach To Earth (2.474 AU)
May 14 - 45th Anniversary (1973), Skylab Launch
May 15 - Comet P/2012 O1 (McNaught) Closest Approach To Earth (2.111 AU)
May 15 - Comet C/2013 C2 (Tenagra) Closest Approach To Earth (8.818 AU)
May 15 - Aten Asteroid 1999 LK1 Near-Earth Flyby (0.034 AU)
May 15 - Apollo Asteroid 101955 Bennu Closest Approach To Earth (0.352 AU)
May 15 - Asteroid 42998 Malinafrank Closest Approach To Earth (1.226 AU)
May 15 - Asteroid 2045 Peking Closest Approach To Earth (1.255 AU)
May 15 - Asteroid 4017 Disneya Closest Approach To Earth (1.665 AU)
May 15 - Asteroid 90388 Philchristensen Closest Approach To Earth (1.719 AU)
May 15 - Asteroid 203 Pompeja Closest Approach To Earth (1.888 AU)
May 15 - Asteroid 5281 Lindstrom Closest Approach To Earth (2.322 AU)
May 15 - Neptune Trojan 2010 TS191 At Opposition (29.677 AU)
May 15 - 55th Anniversary (1963), Mercury 9 Launch (Gordon Cooper)
May 15 - Nicolas-Louis de Lacaille's 305th Birthtday (1713)
May 16 - Moon Occults Aldebaran
May 16 - Comet C/2017 T1 (Heinze) Closest Approach To Earth (1.302 AU)
May 16 - Comet 331P/Gibbs At Opposition (2.113 AU)
May 16 - Comet 240P/NEAT Perihelion (2.134 AU)
May 16 - Comet 43P/Wolf-Harrington At Opposition (3.589 AU)
May 16 - Apollo Asteroid 2015 KJ19 Near-Earth Flyby (0.061 AU)
May 16 - Apollo Asteroid 2012 WS3 Near-Earth Flyby (0.095 AU)
May 16 - Atira Asteroid 2013 JX28 Closest Approach To Earth (0.870 AU)
May 16 - Asteroid 5535 Annefrank Closest Approach To Earth (1.237 AU)
May 16 - Kuiper Belt Object 65407 (2002 RP120) At Opposition (29.547 AU)
May 17 - Comet 263P/Gibbs Closest Approach To Earth (1.658 AU)
May 17 - Comet 331P/Gibbs Closest Approach To Earth (2.113 AU)
May 17 - Comet 11P/Tempel-Swift-LINEAR At Opposition (4.129 AU)
* May 17 - Amor Asteroid 2018 GL1 Near-Earth Flyby (0.036 AU)
May 17 - Asteroid 70713 Sethmacfarlane Closest Approach To Earth (1.655 AU)
May 17 - Asteroid 78453 Bullock Closest Approach To Earth (2.052 AU)
May 17 - Asteroid 439 Ohio Closest Approach To Earth (2.329 AU)
May 18 - Comet 66P/du Toit Closest Approach To Earth (0.896 AU)
* May 18 - Comet P/2018 A4 (PANSTARRS) Perihelion (2.403 AU)
May 18 - Comet P/2000 S4 (LINEAR-Spacewatch) At Opposition (3.748 AU)
May 18 - Asteroid 7749 Jackschmitt Closest Approach To Earth (1.833 AU)
May 18 - Kuiper Belt Object 2015 KH162 At Opposition (58.714 AU)
May 18 - 30th Anniversary (1988), Torino Meteorite Fall (Hit Building in Italy)
May 18 - 65th Anniveray (1953), Jacqueline Cochran Becomes 1st Woman to Break Sound Barrier
May 18 - Richard Tousey's 110th Birthday (1908)
May 18 - Omar Khayyam's 970th Birthday (1048)
* May 19 - Iridium Next 51-55/GRACE-FO 1 & 2 Falcon 9 Launch
May 19 - Comet 66P/du Toit Perihelion (1.290 AU)
May 19 - Comet P/2010 H2 (Vales) Closest Approach To Earth (2.256 AU)
May 19 - Comet P/2014 U2 (Kowalski) At Opposition (3.028 AU)
May 19 - Comet 120P/Mueller At Opposition (4.235 AU)
May 19 - Comet C/2013 C2 (Tenagra) At Opposition (8.820 AU)
May 19 - Asteroid 128036 Rafaelnadal Closest Approach To Earth (0.885 AU)
May 19 - Asteroid 6469 Armstrong Closest Approach To Earth (1.055 AU)
May 19 - Asteroid 4221 Picasso Closest Approach To Earth (1.331 AU)
May 19 - Asteroid 224693 Morganfreeman Closest Approach To Earth (1.820 AU)
May 19 - Asteroid 2104 Toronto Closest Approach To Earth (1.931 AU)
May 19 - Asteroid 10377 Kilimanjaro Closest Approach To Earth (2.630 AU)
May 19 - John Hayford's 150th Birthday (1868)
* May 20 - Cygnus CRS-9 (OA-9)/CubeRRT/HaloSat/RainCube/SORTIE/TEMPEST-D/CaNOP/
RadSat-g/EQUiSat/MemSat/EnduroSat One Antares 230 Launch (International Space Station)
May 20 - Comet 118P/Shoemaker-Levy At Opposition (3.363 AU)
May 20 - Comet 84P/Giclas At Opposition (3.775 AU)
May 20 - Apollo Asteroid 24761 Ahau Closest Approach To Earth (0.867 AU)
May 20 - Asteroid 15318 Innsbrook Closest Approach To Earth (1.155 AU)
May 20 - Asteroid 472 Roma Closest Approach To Earth (1.822 AU)
May 20 - Asteroid 3623 Chaplin Closest Approach To Earth (1.937 AU)
May 20 - Asteroid 8657 Cedrus Closest Approach To Earth (2.026 AU)
May 20 - 30th Anniversary (1978), Pioneer Venus 1 Launch
* May 21 - Chang'e 4 Relay/DSLWP-A1 & A2 CZ-4C Launch (L2 Halo Orbit Mission)
* May 21 - Asteroid 4 Vesta Occults 2UCAC 2491645 (6.0 Magnitude Star)
May 21 - Centaur Object 10199 Chariklo Occults 2UCAC 20274656 (14.4 Magnitude Star)
May 21 - Asteroid 4104 Alu Closest Approach To Earth (1.368 AU)
May 21 - Asteroid 8734 Warner Closest Approach To Earth (1.978 AU)
May 21 - Glenn Curtiss' 140th Birthday (1878)
May 22 - Mars Autumnal Equinox
May 22 - Comet 215P/NEAT At Opposition (3.056 AU)
May 22 - Asteroid 9949 Brontosaurus Closest Approach To Earth (1.230 AU)
May 22 - Asteroid 16682 Donati Closest Approach To Earth (1.326 AU)
May 22 - Asteroid 1541 Estonia Closest Approach To Earth (1.625 AU)
May 22 - David Levy's 70th Birthday (1948)
May 22 - 110th Anniversary (1808), Stannern Meteorite Fall in Czechoslovakia
May 23 - Comet 24P/Schaumasse At Opposition (1.453 AU)
* May 23 - Comet C/2018 EF9 (Lemmon) Perihelion (1.556 AU)
May 23 - Comet P/2010 H2 (Vales) At Opposition (2.259 AU)
May 23 - Comet 159P/LONEOS Perihelion (3.625 AU)
May 23 - Comet 104P/Kowal At Opposition (4.057 AU)
May 23 - Apollo Asteroid 2016 WL7 Near-Earth Flyby (0.080 AU)
May 23 - Asteroid 1284 Latvia Closest Approach To Earth (2.107 AU)
May 23 - Thomas Reiter's 60th Birthday (1958)
* May 24 - SES-12 Falcon 9 Launch
May 24 - Comet 107P/Wilson-Harrington Perihelion (0.970 AU)
* May 24 - Comet C/2018 C2 (Lemmon) Closest Approach To Earth (1.201 AU)
May 24 - Asteroid 4 Vesta Occults UCAC4-359-131702 (12.4 Magnitude Star)
* May 24 - Apollo Asteroid 2018 FS3 Near-Earth Flyby (0.074 AU)
May 24 - Asteroid 337044 Bobdylan Closest Approach To Earth (1.468 AU)
May 24 - Asteroid 30444 Shemp Closest Approach To Earth (1.848 AU)
May 25 - Towel Day - Annual Tribute to Douglas Adams
* May 25 - GSAT 11/Azerspace 2 (Intelsat 38) Ariane 5 Launch
May 25 - Comet 5D/Brorsen Closest Approach To Earth (2.295 AU)
May 25 - Comet P/2012 SB6 (Lemmon) At Opposition (3.601 AU)
May 25 - Comet P/2011 U2 (Bressi) At Opposition (4.583 AU)
May 25 - Asteroid 17059 Elvis Closest Approach To Earth (1.555 AU)
May 25 - Asteroid 2169 Taiwan Closest Approach To Earth (1.912 AU)
May 25 - Asteroid 157064 Sedona Closest Approach To Earth (2.108 AU)
May 25 - 10th Anniversary (2008), Phoenix, Mars Landing
May 26 - Comet 234P/LINEAR Closest Approach To Earth (2.354 AU)
May 26 - Comet 187P/LINEAR Closest Approach To Earth (2.888 AU)
May 26 - Comet 187P/LINEAR At Opposition (2.888 AU)
May 26 - Comet P/2011 U2 (Bressi) Closest Approach To Earth (4.583 AU)
May 26 - Apollo Asteroid 2017 LF Near-Earth Flyby (0.085 AU)
May 26 - Asteroid 5738 Billpickering Closest Approach To Earth (2.120 AU)
May 26 - Plutino 2006 HJ123 At Opposition (33.096 AU)
May 27 - Moon Occults Asteroid 16 Psyche
May 27 - Comet 255P/Levy At Opposition (2.698 AU)
May 27 - Comet P/2017 G2 (PANSTARRS) Closest Approach To Earth (2.954 AU)
May 27 - Comet 315P/LONEOS At Opposition (3.368 AU)
May 27 - Comet 187P/LINEAR Perihelion (3.881 AU)
May 27 - Aten Asteroid 66391 (1999 KW4) Near-Earth Flyby (0.078 AU)
May 27 - Atira Asteroid 481817 (2008 UL90) Closest Approach To Earth (0.580 AU)
May 27 - Asteroid 11335 Santiago Closest Approach To Earth (1.457 AU)
May 27 - Asteroid 2197 Shanghai Closest Approach To Earth (2.306 AU)
May 27 - Plutino 38628 Huya At Opposition (27.633 AU)
May 27 - Alexander Volkov's 70th Birthday (1948)
May 28 - Comet P/1999 RO28 (LONEOS) Closest Approach To Earth (2.877 AU)
May 28 - Comet C/2015 VL62 Closest Approach To Earth (2.895 AU)
May 28 - Comet 215P/NEAT Closest Approach To Earth (3.051 AU)
May 28 - Comet 157P/Tritton At Opposition (3.884 AU)
May 28 - Asteroid 4 Vesta Occults TYC 6268-00905-1 (10.3 Magnitude Star)
May 28 - Amor Asteroid 2018 ER4 Near-Earth Flyby (0.064 AU)
May 28 - Asteroid 17744 Jodiefoster Closest Approach To Earth (1.379 AU)
May 28 - Asteroid 6117 Brevardastro Closest Approach To Earth (1.480 AU)
May 28 - Asteroid 6714 Montreal Closest Approach To Earth (1.657 AU)
May 28 - Asteroid 4099 Wiggins Closest Approach To Earth (1.805 AU)
May 28 - Asteroid 3780 Maury Closest Approach To Earth (1.827 AU)
May 28 - Asteroid 2044 Wirt Closest Approach To Earth (1.998 AU)
May 28 - Asteroid 1042 Amazone Closest Approach To Earth (2.279 AU)
May 29 - Comet 357P/Hill Perihelion (2.527 AU)
May 29 - Aten Asteroid 68347 (2001 KB67) Near-Earth Flyby (0.024 AU)
May 29 - Apollo Asteroid 2014 WG365 Near-Earth Flyby (0.061 AU)
May 29 - Asteroid 3131 Mason-Dixon Closest Approach To Earth (1.835 AU)
May 29 - Kuiper Belt Object 2010 JO179 At Opposition (57.435 AU)
May 30 - Comet C/2017 B3 (LINEAR) Closest Approach To Earth (3.873 AU)
May 30 - Comet 144P/Kushida At Opposition (3.888 AU)
May 30 - Asteroid 4 Vesta Occults UCAC4-358-128730 (12.2 Magnitude Star)
* May 30 - Centaur Object 10199 Chariklo Occults 2UCAC 20036612 (14.9 Magnitude Star)
May 30 - Asteroid 12325 Bogota Closest Approach To Earth (1.354 AU)
May 30 - Neptune Trojan 2010 TT191 At Opposition (33.184 AU)
May 30 - Michael Lopez-Alegria's 60th Birthday (1958)
May 30 - Hannes Alfven's 100th Birthday (1908)
May 30 - Raymond Dugan's 140th Birthday (1878)
* May 31 - BlackSky Global 1 PSLV Launch
May 31 - Comet 164P/Christensen Perihelion (1.685 AU)
May 31 - Comet 227P/Catalina-LINEAR At Opposition (2.195 AU)
May 31 - Asteroid 4 Vesta Occults TYC 6268-00025-1 (10.7 Magnitude Star)
May 31 - Asteroid 4 Vesta Occults TYC 6268-00036-1 (11.0 Magnitude Star)
May 31 - Amor Asteroid 2013 LE7 Near-Earth Flyby (0.046 AU)
May 31 - Aten Asteroid 5381 Sekmet Closest Approach To Earth (1.081 AU)
May 31 - Asteroid 13599 Lisbon Closest Approach To Earth (1.901 AU)
May 31 - Asteroid 24102 Jacquecassini Closest Approach To Earth (1.916 AU)
May 31 - Asteroid 589 Croatia Closest Approach To Earth (2.255 AU)
May 31 - Kuiper Belt Object 2007 JH43 At Opposition (39.551 AU)
May 31 - 10th Anniversary (2008), STS-124 Launch (Space Shuttle Discovery, International Space Station)
May 31 - 20th Anniversary (1998), Galileo, Europa 15 Flyby

June 2018
Jun ?? - DSX/FORMOSAT 7A-77F/GPIM/OTB/FalconSat 6/NPSat 1/Oculus-ASR/Prox 1/LightSail-B/
Nanosat 7/SSTE 4/SET 1/ARMADILLO/Falconsat 7 (Peregrinne)/TBEx A & B/Prometheus 2-1 - 2-8/
TEPCE 1 & 2/CP 9 StangSat Falcon Launch
* Jun ?? - Pakistan Remote Sensing Satellite (PRSS-1)/PakTES 1 CZ-2C/SMA Launch * Jun ?? - GSAT-29 GSLV Mk III Launch
* Jun ?? - Telstar 19V Falcon 9 Launch
Jun 01 - Comet 168P/Hergenrother Closest Approach To Earth (2.988 AU)
Jun 01 - Asteroid 4 Vesta Occults 2UCAC 24660991 (12.1 Magnitude Star)
Jun 01 - Asteroid 8837 London Closest Approach To Earth (0.983 AU)
Jun 01 - Asteroid 61342 Lovejoy Closest Approach To Earth (1.165 AU)
Jun 01 - Asteroid 5891 Gehrig Closest Approach To Earth (1.727 AU)
Jun 01 - Georgy Dobrovolsky's 90th birthday (1928)
Jun 01 - Geminiano Montanari's 385th Birthday (1633)
* Jun 02 - Comet C/2018 C2 (Lemmon) Perihelion (1.957 AU)
Jun 02 - Comet 261P/Larson At Opposition (2.265 AU)
Jun 02 - Comet 178P/Hug-Bell At Opposition (3.780 AU)
Jun 02 - Comet C/2017 M5 (TOTAS) Perihelion (5.990 AU)
Jun 02 - Apollo Asteroid 2016 XF Near-Earth Flyby (0.077 AU)
Jun 02 - Asteroid 16421 Roadrunner Closest Approach To Earth (0.981 AU)
Jun 02 - Asteroid 5860 Deankootz Closest Approach To Earth (1.830 AU)
Jun 02 - Asteroid 243 Ida Closest Approach To Earth (1.969 AU)
Jun 02 - Asteroid 2191 Uppsala Closest Approach To Earth (2.259 AU)
Jun 02 - 15th Anniversary (2003), Mars Express/ Beagle 2 Launch
Jun 02 - 20th Anniversary (1998), STS-91 Launch (Space Shuttle Discovery, Mir Space Station)
Jun 02 - 35th Anniversary (1983), Venera 15 Launch (USSR Venus Orbiter)
Jun 02 - 160th Anniversary (1858), Discovery of Donati's Comet
Jun 03 - Soyuz MS-7 Return to Earth (International Space Station)
Jun 03 - Comet P/2015 X6 (PANSTARRS) Closest Approach To Earth (2.212 AU)
Jun 03 - Comet P/2015 X6 (PANSTARRS) At Opposition (2.212 AU)
Jun 03 - Comet 234P/LINEAR At Opposition (2.362 AU
Jun 03 - Comet 96P/Machholz Closest Approach To Earth (2.397 AU)
Jun 03 - 5th Anniversary (2013), Discovery of Rings Around Chariklo
Jun 04 - Asteroid 16035 Sasandford Closest Approach To Earth (1.591 AU)
Jun 04 - Asteroid 2825 Crosby Closest Approach To Earth (1.594 AU)
Jun 04 - Asteroid 17656 Hayabusa Closest Approach To Earth (1.690 AU)
Jun 04 - Apollo Asteroid 4257 Ubasti Closest Approach To Earth (1.751 AU)
Jun 04 - Asteroid 10189 Normanrockwell Closest Approach To Earth (1.797 AU)
Jun 04 - Asteroid 5102 Benfranklin Closest Approach To Earth (2.013 AU)
Jun 04 - Asteroid 49272 Bryce Canyon Closest Approach To Earth (2.209 AU)
Jun 04 - Asteroid 284891 Kona Closest Approach To Earth (2.748 AU)
Jun 04 - Kuiper Belt Object 278361 (2007 JJ43) At Opposition (39.991 AU)
Jun 04 - John Grigg's 180th Birthday (1838)
Jun 05 - Apollo Asteroid 2004 LB Near-Earth Flyby (0.092 AU)
Jun 05 - Apollo Asteroid 11885 Summanus Closest Approach To Earth (1.326 AU)
Jun 05 - Asteroid 17427 Poe Closest Approach To Earth (2.918 AU)
Jun 05 - Sydney Observatory's 160th Birthday (1858)
Jun 06 - Asteroid 23990 Springsteen Closest Approach To Earth (1.261 AU)
Jun 06 - Asteroid 2829 Bobhope Closest Approach To Earth (1.718 AU)
Jun 06 - Asteroid 9533 Aleksejleonov Closest Approach To Earth (2.012 AU)
Jun 06 - 35th Anniversary (1983), Venera 16 Launch (USSR Venus Orbiter)
Jun 07 - Dwarf Planet Ceres Occults 2UCAC 40020132 (12.3 Magniutde Star)
Jun 07 - Asteroid 16 Psyche Occults TYC 5586-00262-1 (11.9 Magnitude Star)
Jun 07 - Aten Asteroid 2017 EH1 Near-Earth Flyby (0.096 AU)
Jun 07 - Asteroid 2955 Newburn Closest Approach To Earth (0.920 AU)
Jun 07 - Asteroid 1718 Namibia Closest Approach To Earth (1.186 AU)
Jun 07 - Apollo Asteroid 4769 Castalia Closest Approach To Earth (1.206 AU)
Jun 07 - Asteroid 4535 Adamcarolla Closest Approach To Earth (1.356 AU)
Jun 07 - Asteroid 83360 Catalina Closest Approach To Earth (1.700 AU3)
Jun 07 - Bernard Burke's 90th Birthday (1928)
Jun 07 - 265th Anniversary (1753), British Museum Founded
Jun 08 - World Oceans Day
Jun 08 - Soyuz MS-9 Soyuz-FG Launch (International Space Station 55S)
Jun 08 - Comet 212P/NEAT At Opposition (3.758 AU)
Jun 08 - Comet P/2016 WM48 (Lemmon) At Opposition (3.852 AU)
Jun 08 - Apollo Asteroid 4660 Nereus Closest Approach To Earth (1.743 AU)
Jun 08 - Asteroid 20403 Attenborough Closest Approach To Earth (2.222 AU)
Jun 08 - Kuiper Belt Object 2010 KZ39 At Opposition (45.036 AU)
Jun 08 - 100th Anniversary (1918), Discovery of Nova Aquila
Jun 09 - Comet P/2012 TK8 (Tenagra) At Opposition (4.125 AU)
Jun 09 - Amor Asteroid 2009 SK104 Near-Earth Flyby (0.081 AU)
* Jun 09 - Asteroid 881 Athene Closest Approach To Earth (1.326 AU)
Jun 09 - Apollo Asteroid 4197 Morpheus Closest Approach To Earth (1.770 AU)
Jun 09 - Asteroid 130 Elektra Closest Approach To Earth (2.560 AU)
Jun 09 - Asteroid 2069 Hubble Closest Approach To Earth (2.589 AU)
* Jun 10 - Fengyun 2H CZ-3A Launch
Jun 10 - Comet 263P/Gibbs At Opposition (1.732 AU)
Jun 10 - Comet P/2001 T3 (NEAT) Perihelion (2.486 AU)
Jun 10 - Comet C/2015 VL62 At Opposition (2.940 AU)
Jun 10 - 15th Anniversary (2003), Mars Exploration Rover A (Spirit) Launch
Jun 10 - 45th Anniversary (1973), Explorer 49 Launch (Moon Orbiter)
* Jun 11 - IGS Radar-6 H-2A Launch
Jun 11 - Comet P/2007 T2 (Kowalski) Closest Approach To Earth (0.502 AU)
Jun 11 - Comet P/2017 G2 (PANSTARRS) At Opposition (2.989 AU)
Jun 11 - Amor Asteroid 2018 EJ4 Near-Earth Flyby (0.015 AU)
Jun 11 - Amor Asteroid 2015 DP155 Near-Earth Flyby (0.023 AU)
Jun 11 - Apollo Asteroid 2008 LA Near-Earth Flyby (0.071 AU)
* Jun 11 - Asteroid 26733 Nanavistor Closest Approach To Earth (1.370 AU)
* Jun 11 - Asteroid 6827 Wombat Closest Approach To Earth (2.023 AU)
Jun 11 - Neptune Trojan 2013 KY18 At Opposition (29.046 AU)
Jun 11 - Kuiper Belt Object 174567 Varda At Opposition (45.762 AU)
Jun 11 - 5th Anniversary (2013), Shenzhou 10 CZ-2F/H Launch (Chinese Manned Launch to Tian Gong1 1 Space Station)
Jun 11 - 70th Anniversary (1948), V-2 Blossom Launch (Carried Albert I the Rhesus Monkey)
Jun 11 - Johann Georg Palitzsch's 295th Birthday (1723)
Jun 12 - Gaofen 6/Luijia 1 CZ-2D Launch
Jun 12 - Comet 354P/LINEAR Closest Approach To Earth (1.559 AU)
Jun 12 - Asteroid 14593 Everett Closest Approach To Earth (1.598 AU)
Jun 12 - Asteroid 1241 Dysona Closest Approach To Earth (1.982 AU)
Jun 12 - Asteroid 70715 Allancheuvront Closest Approach To Earth (2.028 AU)
Jun 12 - David Gill's 175th Birthday (1843)
Jun 13 - Progress MS-7 Reenters Earth's Atmosphere (International Space Station)
Jun 13 - STP-2 Falcon Heavy Launch
* Jun 13 - ICON (MIDEX 8) Pegasus XL Launch
Jun 13 - Comet 354P/LINEAR At Opposition (1.559 AU)
Jun 13 - Comet 182P/LONEOS Closest Approach To Earth (2.859 AU)
Jun 13 - Asteroid 4 Vesta Occults 2UCAC 24411081 (11.8 Magnitude Star)
* Jun 13 - Asteroid 770 Bali Closest Approach To Earth (1.523 AU)

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