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 5,200 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.

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


=========================
SPACE CALENDAR
March 22, 2018
=========================

* indicates changes from last month's calendar.

March 2018
Mar ?? - Cartosat-3 PSLV-CA Launch
Mar ?? - Jilin 1-09,1-10,1-11,1-12 Kuaizhou 1A Launch
* Mar ?? - Pakistan Remote Sensing Satellite (PRSS-1) CZ-2C/SMA Launch
* Mar ?? - Zhuhai-1 03 CZ-11 Launch
Mar ?? - James Bradley's 325th Birthday (1693)
Mar 22 - Moon Occults Aldebaran
Mar 22 - Comet 226P/Pigott-LINEAR-Kowalski At Opposition (3.571)
Mar 22 - Comet P/2005 T2 (Christensen) At Opposition (3.630 AU)
* Mar 22 - Apollo Asteroid 2018 EV1 Near-Earth Flyby (0.019 AU)
Mar 22 - Aten Asteroid 2011 GP44 Near-Earth Flyby (0.056 AU)
Mar 22 - Asteroid 9395 Saint Michel Closest Approach To Earth (1.361 AU)
Mar 22 - Asteroid 45 Eugenia Closest Approach To Earth (1.595 AU)
Mar 22 - Asteroid 33002 Everest Closest Approach To Earth (1.895 AU)
Mar 22 - Asteroid 9963 Sandage Closest Approach To Earth (2.097 AU)
Mar 22 - Asteroid 11739 Baton Rouge Closest Approach To Earth (3.830 AU)
Mar 22 - 20th Anniversary (1998), Monahans Meteorite Fall (Hit Basketball Court in Texas)
Mar 22 - Robert Millikan's 150th Birthday (1868)
Mar 22 - Alfred Fowler's 150th Birthday (1868)
Mar 23 - Soyuz MS-8 Soyuz-FG Launch (International Space Station 54S)
Mar 23 - Comet 73P-T/Schwassmann-Wachmann Perihelion (0.950 AU)
Mar 23 - Comet 363P/Lemmon Perihelion (1.508 AU)
Mar 23 - Comet 306P/LINEAR At Opposition (3.569 AU)
Mar 23 - Comet 17P/Holmes At Opposition (4.122 AU)
Mar 23 - Comet C/2017 K1 (PANSTARRS) Perihelion (7.262 AU)
* Mar 23 - Apollo Asteroid 2018 FC3 Near-Earth Flyby (0.013 AU)
* Mar 23 - Apollo Asteroid 2018 FL2 Near-Earth Flyby (0.023 AU)
* Mar 23 - Apollo Asteroid 2018 FA2 Near-Earth Flyby (0.029 AU)
Mar 23 - Apollo Asteroid 267940 (2004 EM20) Near-Earth Flyby (0.096 AU)
Mar 23 - Asteroid 65675 Mohr-Gruber Closest Approach To Earth (1.770 AU)
Mar 24 - Comet P/2017 W3 (Gibbs) Closest Approach To Earth (2.860 AU)
Mar 24 - Comet P/2017 W3 (Gibbs) At Opposition (2.860 AU)
* Mar 24 - Apollo Asteroid 2018 FW1 Near-Earth Flyby (0.024 AU)
* Mar 24 - Amor Asteroid 2018 ER3 Near-Earth Flyby (0.082 AU)
* Mar 24 - Amor Asteroid 2018 DY1 Near-Earth Flyby (0.094 AU)
Mar 24 - Asteroid 72432 Kimrobinson Closest Approach To Earth (1.305 AU)
Mar 24 - Asteroid 25137 Seansolomon Closest Approach To Earth (1.424 AU)
Mar 24 - 25th Anniversary (1993), Discovery of Comet Shoemaker-Levy 9
Mar 24 - 85th Anniversary (1933), Pasamonte Meteorite Shower in New Mexico
Mar 24 - Walter Baade's 125th Birthday (1893)
Mar 25 - European Summer Time - Set Clock Ahead 1 Hour (European Union)
Mar 25 - Comet C/2017 M3 (PANSTARRS) At Opposition (4.479 AU)
Mar 25 - Asteroid 773 Irmintraud Occults HIP 98842 (5.1 Magnitude Star)
Mar 25 - Asteroid 4 Vesta Occults 2UCAC 25366909 (12.0 Magnitude Star)
* Mar 25 - Apollo Asteroid 2018 FQ1 Near-Earth Flyby (0.014 AU)
* Mar 25 - Apollo Asteroid 2018 FB3 Near-Earth Flyby (0.024 AU)
Mar 25 - Aten Asteroid 2017 FZ2 Near-Earth Flyby (0.071 AU)
Mar 25 - Asteroid 9249 Yen Closest Approach To Earth (1.271 AU)
Mar 25 - Asteroid 274301 Wikipedia Closest Approach To Earth (1.643 AU)
Mar 25 - Asteroid 1024 Hale Closest Approach To Earth (2.547 AU)
Mar 25 - Neptune Trojan 316179 (2010 EN65) At Opposition (25.620 AU)
Mar 25 - Dwarf Planet 136472 Makemake At Opposition (51.639 AU)
Mar 25 - 35th Anniversary (1983), Michael Jackson's Moonwalk Debut (Pasadena Civic Auditorium)
Mar 25 - James Lovell's 90th Birthday (1928)
Mar 25 - Kenneth Franklin's 95th Birthday (1923)
Mar 25 - Christopher Clavius' 480th Birthtday (1538)
Mar 26 - Comet 183P/Korlevic-Juric Closest Approach To Earth (2.899 AU)
* Mar 26 - Comet C/2018 F1 (Grauer) At Opposition (2.944 AU)
Mar 26 - Comet 314P/Montani At Opposition (4.062 AU)
* Mar 26 - Apollo Asteroid 2018 FR1 Near-Earth Flyby (0.016 AU)
Mar 26 - Asteroid 19911 Rigaux Closest Approach To Earth (1.194 AU)
Mar 26 - Asteroid 2625 Jack London Closest Approach To Earth (1.318 AU)
Mar 26 - Asteroid 3018 Godiva Closest Approach To Earth (1.545 AU)
Mar 26 - 15th Anniversary (2003), Park Forest Meteorite Shower (Hit Houses in Illinois)
Mar 26 - Nathaniel Bowditch's 245th Birthday (1773)
Mar 27 - Comet 300P/Catalina At Opposition (1.661 AU)
Mar 27 - Comet 183P/Korlevic-Juric At Opposition (2.899 AU)
Mar 27 - Comet P/2007 S1 (Zhao) At Opposition (3.932 AU)
Mar 27 - Comet P/2010 TO20 (LINEAR-Grauer) At Opposition (4.990 AU)
Mar 27 - Comet C/2016 C1 (PANSTARRS) At Opposition (8.593 AU)
* Mar 27 - Apollo Asteroid 2018 DH1 Near-Earth Flyby (0.024 AU)
Mar 27 - Apollo Asteroid 2004 EU22 Near-Earth Flyby (0.084 AU)
Mar 27 - Asteroid 96192 Calgary Closest Approach To Earth (1.605 AU)
Mar 27 - Asteroid 4636 Chile Closest Approach To Earth (2.021 AU)
* Mar 28 - EMKA Soyuz-2-1v
Mar 28 - Moon Occults Regulus
Mar 28 - Comet P/2005 JN (Spacewatch) At Opposition (1.423 AU)
Mar 28 - Comet P/2012 K3 (Gibbs) Closest Approach To Earth (2.848 AU)
* Mar 28 - Apollo Asteroid 2018 FU1 Near-Earth Flyby (0.032 AU)
Mar 28 - Apollo Asteroid 2016 SR2 Near-Earth Flyby (0.048 AU)
Mar 28 - Apollo Asteroid 2013 QM48 Near-Earth Flyby (0.087 AU)
Mar 28 - Aten Asteroid 2003 FY6 Near-Earth Flyby (0.095 AU)
Mar 28 - Asteroid 3130 Hillary Closest Approach To Earth (1.951 AU)
Mar 28 - Centaur Object 31824 Elatus At Opposition (15.297 AU)
* Mar 29 - Iridium Next 41-50 Falcon 9 Launch
* Mar 29 - GSAT-6A GSLV Mk II Launch
* Mar 29 - BeiDou-3 (M7 & M8) CZ-3B/YZ-1 Launch
Mar 29 - Venus Passes 0.7 Degrees From Uranus
Mar 29 - Comet 50P/Arend At Opposition (4.157 AU)
Mar 29 - Comet P/2010 TO20 (LINEAR-Grauer) Closest Approach To Earth (4.989 AU)
* Mar 29 - Apollo Asteroid 2018 FB Near-Earth Flyby (0.013 AU)
Mar 29 - Asteroid 114703 North Dakota Closest Approach To Earth (1.844 AU)
Mar 29 - 20th Anniversary (1998), Galileo, Europa 14 Flyby
Mar 29 - Tullio Levi-Civita's 145th Birthday (1873)
Mar 30 - Comet 312P/NEAT At Opposition (3.803 AU)
Mar 30 - Comet P/2014 U4 (PANSTARRS) At Opposition (4.079 AU)
Mar 30 - Comet C/2018 B1 (Lemmon) Perihelion (5.117 AU)
* Mar 30 - Apollo Asteroid 2018 FB2 Near-Earth Flyby (0.026 AU)
Mar 30 - Apollo Asteroid 37655 Illapa Closest Approach To Earth (0.283 AU)
Mar 30 - Asteroid 3590 Holst Closest Approach To Earth (1.180 AU)
Mar 30 - Asteroid 9537 Nolan Closest Approach To Earth (1.387 AU)
Mar 30 - Asteroid 4864 Nimoy Closest Approach To Earth (1.832 AU)
Mar 30 - Asteroid 3714 Kenrussell Closest Approach To Earth (1.867 AU)
Mar 30 - Asteroid 1801 Titicaca Closest Approach To Earth (2.075 AU)
Mar 30 - Asteroid 249521 Truth Closest Approach To Earth (2.370 AU)
Mar 31 - Comet 105P/Singer Brewster At Opposition (1.276 AU)
Mar 31 - Comet C/2017 F2 (PANSTARRS) Closest Approach To Earth (6.070 AU)
Mar 31 - Asteroid 16 Psyche Occults TYC 6185-00126-1 (11.3 Magnitude Star)
Mar 31 - Apollo Asteroid 2001 FA58 Near-Earth Flyby (0.097 AU)
Mar 31 - Aten Asteroid 2010 GD35 Near-Earth Flyby (0.040 AU)
Mar 31 - Asteroid 4763 Ride Closest Approach To Earth (1.404 AU)
Mar 31 - Asteroid 784 Pickeringia Closest Approach To Earth (1.712 AU)
Mar 31 - Asteroid 9252 Goddard Closest Approach To Earth (2.580 AU)
Mar 31 - 80th Anniversary (1938), Kasamatsu Meteorite Fall (Hit House in Japan)

April 2018
Apr ?? - Chandrayaan 2 GSLV Mk II Launch (India Moon Orbiter, Lander, Rover)
Apr ?? - Gaofen 5 (GF 5) CZ-4C Launch
Apr ?? - SkySat 14 & 15/Eu:CROPIS/ORS 6 (COWVR)/STPSat 5/NEXTSat 1/KazSTSAT/BlackSky Global 1=4/
HawkEye Pathfinder 1-3/ORS 7A & 7B (Polar Scout 1 & 2)/COPPER 2/MinXSS 2/Audacy Zero/
Fox 1C (Fox 1Cliff)/KNACKSAT/Elysium-Star 2/JY1-Sat Falcon 9 Launch * Apr ?? - Outernet 1 Electron Launch
* Apr ?? - Superbird 8/DSN 1/ Hylas 4 Ariane 5 Launch
Apr 01 - Easter Sunday
Apr 01 - Moon Occults Asteroid 21 Lutetia
* Apr 01 - Apollo Asteroid 2018 EM4 Near-Earth Flyby (0.016 AU)
* Apr 01 - Amor Asteroid 2018 FV1 Near-Earth Flyby (0.086 AU)
Apr 01 - Apollo Asteroid 2007 RX8 Near-Earth Flyby (0.085 AU)
Apr 01 - Asteroid 100000 Astronautica Closest Approach To Earth (1.067 AU)
Apr 01 - Apollo Asteroid 12923 Zephyr Closest Approach To Earth (1.365 AU)
Apr 01 - Asteroid 9133 d'Arrest Closest Approach To Earth (2.081 AU)
Apr 01 - Sergey Volkov's 45th Birthday (1973)
Apr 02 - CRS-14/CAPSat/CIRiS/TJREVERB/SASSI2/CySat 1/TechEdSat 8/Virginia 1-3/SPACE-HAUC/SOCRATES/UNITE/EnduroSat One/Overview 1A Falcon 9 Launch (International Space Station)
Apr 02 - Mars Passes 1.3 Degrees From Saturn
Apr 02 - Comet 73P-S/Schwassmann-Wachmann Closest Approach To Earth (1.178 AU)
Apr 02 - Comet 316P/LONEOS-Christensen Closest Approach To Earth (3.533 AU)
Apr 02 - Comet C/2017 F2 (PANSTARRS) At Opposition (6.070 AU)
Apr 02 - Aten Asteroid 2004 FG29 Near-Earth Flyby (0.010 AU)
* Apr 02 - Apollo Asteroid 2018 ER1 Near-Earth Flyby (0.040 AU)
Apr 02 - Aten Asteroid 3554 Amun Closest Approach To Earth (1.116 AU)
Apr 02 - Asteroid 16260 Sputnik Closest Approach To Earth (1.866 AU)
Apr 02 - 55th Anniversary (1963), Luna 4 Launch (Soviet Moon Flyby Mission)
Apr 02 - Francesco Grimaldi's 400th Birthday (1618)
Apr 03 - Moon Occults Asteroid 16 Psyche
Apr 03 - Asteroid 9995 Alouette Closest Approach To Earth (1.046 AU)
Apr 03 - Asteroid 26732 Damianpeach Closest Approach To Earth (1.438 AU)
Apr 03 - Asteroid 84566 VIMS Closest Approach To Earth (1.523 AU)
Apr 03 - Asteroid 4804 Pasteur Closest Approach To Earth (2.024 AU)
Apr 03 - Asteroid 163800 Richardnorton Closest Approach To Earth (2.106 AU)
Apr 03 - Asteroid 12432 Usuda Closest Approach To Earth (2.160 AU)
Apr 03 - Asteroid 1877 Marsden Closest Approach To Earth (3.102 AU)
Apr 03 - 45th Anniversary (1973), Salyut 2 Launch (USSR's 2nd Space Station)
Apr 04 - 50th Anniversary (1968), Apollo 6 Launch (Last Test Flight of Saturn V)
Apr 04 - Asteroid 4 Vesta Occults 2UCAC 25373191 (11.8 Magnitude Star)
* Apr 04 - Apollo Asteroid 2018 EB Near-Earth Flyby (0.027 AU)
Apr 04 - Asteroid 16543 Rosetta Closest Approach To Earth (1.534 AU)
Apr 04 - Asteroid 2807 Karl Marx Closest Approach To Earth (1.607 AU)
Apr 04 - Asteroid 391257 Wilwheaton Closest Approach To Earth (1.807 AU)
Apr 04 - Asteroid 96193 Edmonton Closest Approach To Earth (1.898 AU)
Apr 04 - 35th Anniversary (1983), STS-6 Launch (Space Shuttle Challenger, 1st EVA)
Apr 04 - Joseph Ashbrook's 100th Birthday (1918)
* Apr 05 - Bangabandhu-1 Falcon 9 Launch
Apr 05 - Comet C/2015 O1 (PANSTARRS) Closest Approach To Earth (3.233 AU)
Apr 05 - Asteroid 5261 Eureka (Mars Trojan) Closest Approach To Earth (0.722 AU)
Apr 05 - Atira Asteroid 2015 DR215 Closest Approach To Earth (0.970 AU)
Apr 05 - Asteroid 4871 Riverside Closest Approach To Earth (1.464 AU)
Apr 05 - Asteroid 1777 Gehrels Closest Approach To Earth (1.625 AU)
Apr 05 - Asteroid 1071 Brita Closest Approach To Earth (1.913 AU)
Apr 05 - Asteroid 2068 Dangreen Closest Approach To Earth (2.007 AU)
Apr 05 - 45th Anniversary (1973), Pioneer 11 Launch (Jupiter & Saturn Flyby Mission)
Apr 06 - Comet 316P/LONEOS-Christensen At Opposition (3.535 AU)
Apr 06 - Comet P/2006 H1 (McNaught) At Opposition (3.943 AU)
Apr 06 - Asteroid 35352 Texas Closest Approach To Earth (1.490 AU)
Apr 06 - 10th Anniversary (2008), Berduc Meteorite Fall (Hit Building in Argentina)
Apr 06 - Franck Marchis' 45th Birthday (1973)
Apr 07 - 50th Anniversary (1968), Luna 14 Launch (Soviet Moon Orbiter Mission)
Apr 07 - Comet P/2005 JN (Spacewatch) Closest Approach To Earth (1.410 AU)
Apr 07 - Comet P/2006 S1 (Christensen) At Opposition (3.437 AU)
Apr 07 - Asteroid 2511 Patterson Closest Approach To Earth (1.264 AU)
Apr 07 - Asteroid 163693 Atira Closest Approach To Earth (1.363 AU)
Apr 07 - Asteroid 12561 Howard Closest Approach To Earth (1.671 AU)
Apr 07 - Asteroid 11945 Amsterdam Closest Approach To Earth (2.280 AU)
Apr 07 - 35th Anniversary (1983), 1st Spacewalk from Space Shuttle (Story Musgrave, Don Peterson, STS-6)
Apr 08 - Comet 143P/Kowal-Mrkos At Opposition (1.542 AU)
Apr 08 - Comet P/2012 O2 (McNaught) Closest Approach To Earth (2.652 AU)
Apr 08 - Comet C/2015 O1 (PANSTARRS) At Opposition (3.234 AU)
Apr 08 - Comet C/2016 T1 (Matheny) At Opposition (4.192 AU)
Apr 08 - Comet 196P/Tichy At Opposition (4.204 AU)
Apr 08 - Amor Asteroid 2018 CZ13 Near-Earth Flyby (0.072 AU)
Apr 08 - Asteroid 1198 Atlantis Closest Approach To Earth (1.845 AU)
Apr 08 - Kuiper Belt Object 2014 FT71 At Opposition (46.680 AU)
Apr 08 - 25th Anniversary (1993), STS-56 Launch (Space Shuttle Discovery, ATLAS-2)
Apr 08 - Karl Hencke's 225th Birthday (1793)
Apr 09 - Asteroid 75564 Audubon Closest Approach To Earth (1.062 AU)
Apr 09 - Apollo Asteroid 4179 Toutatis Closest Approach To Earth (2.818 AU)
Apr 09 - Kuiper Belt Object 2013 FS28 At Opposition (83.812 AU)
Apr 10 - Comet 222P/LINEAR At Opposition (2.922 AU)
Apr 10 - Comet 68P/Klemola At Opposition (3.857 AU)
Apr 10 - Amor Asteroid 3757 Anagolay Closest Approach To Earth (0.950 AU)
* Apr 11 - Comet 365P/PANSTARRS At Opposition (0.548 AU)
Apr 11 - Comet 143P/Kowal-Mrkos Closest Approach To Earth (1.541 AU)
Apr 11 - Comet C/2016 A3 (PANSTARRS) Closest Approach To Earth (4.095 AU)
Apr 11 - Apollo Asteroid 2008 GY21 Near-Earth Flyby (0.026 AU)
Apr 11 - Apollo Asteroid 2018 BY2 Near-Earth Flyby (0.061 AU)
Apr 11 - Asteroid 6524 Baalke Closest Approach To Earth (1.656 AU)
Apr 11 - Asteroid 10799 Yucatan Closest Approach To Earth (1.913 AU)
Apr 11 - Asteroid 1776 Kuiper Closest Approach To Earth (2.095 AU)
Apr 11 - Asteroid 13330 Dondavis Closest Approach To Earth (2.364 AU)
Apr 11 - Macedonio Melloni's 220th Birthday (1798)
Apr 12 - International Day of Human Space Flight
Apr 12 - Yuri's Night: World Space Party
Apr 12 - AFSPC 11/EAGLE Atlas 5 Launch
Apr 12 - Comet 358P/PANSTARRS Perihelion (2.402 AU)
Apr 12 - Comet 224P/LINEAR-NEAT At Opposition (3.261 AU)
Apr 12 - Apollo Asteroid 363599 (2004 FG11) Near-Earth Flyby (0.049 AU)
Apr 12 - Asteroid 443 Photographica Closest Approach To Earth (1.141 AU)
Apr 12 - Asteroid 52246 Donaldjohanson Closest Approach To Earth (1.315 AU)
Apr 12 - Asteroid 166614 Zsazsa Closest Approach To Earth (1.638 AU)
Apr 12 - Asteroid 9937 Triceratops Closest Approach To Earth (1.908 AU)
Apr 12 - Asteroid 1537 Transylvania Closest Approach To Earth (2.965 AU)
Apr 12 - 10th Anniversary (2008), Zunhua Meteorite Fall (Hit Farmhouse in China)
Apr 12 - 50th Anniversary (1968), Schenectady Meteorite Fall (Hit House in New York)
Apr 13 - Comet 105P/Singer Brewster Closest Approach To Earth (1.254 AU)
Apr 13 - Comet P/2007 R2 (Gibbs) At Opposition (4.187 AU)
Apr 13 - Aten Asteroid 2005 GZ128 Near-Earth Flyby (0.074 AU)
Apr 13 - Apollo Asteroid 2013 GF84 Near-Earth Flyby (0.077 AU)
Apr 13 - Asteroid 17024 Costello Closest Approach To Earth (1.404 AU)
Apr 13 - Asteroid 27363 Alvanclark Closest Approach To Earth (1.793 AU)
Apr 13 - Asteroid 1958 Chandra Closest Approach To Earth (2.167 AU)
Apr 13 - Thomas Jefferson's 275th Birthday (1743)
Apr 14 - Comet 186P/Garradd At Opposition (3.634 AU)
Apr 14 - Comet 158P/Kowal-LINEAR At Opposition (3.892 AU)
Apr 14 - Aten Asteroid 2014 UR Near-Earth Flyby (0.024 AU)
Apr 14 - Asteroid 3061 Cook Closest Approach To Earth (2.513 AU)
Apr 14 - Asteroid 4169 Celsius Closest Approach To Earth (2.974 AU)
Apr 15 - Comet 30P/Reinmuth Closest Approach To Earth (1.769 AU)
* Apr 15 - Comet C/2018 F1 (Grauer) Closest Approach To Earth (2.881 AU)
Apr 15 - Comet P/2017 D1 (Fuls) At Opposition (3.734 AU)
Apr 15 - Comet 158P/Kowal-LINEAR Closest Approach To Earth (3.892 AU)
Apr 15 - Comet C/2016 A3 (PANSTARRS) At Opposition (4.097 AU)
Apr 15 - Apollo Asteroid 2016 GB222 Near-Earth Flyby (0.074 AU)
Apr 15 - Asteroid 1997 Leverrier Closest Approach To Earth (1.590 AU)
Apr 15 - Asteroid 4342 Freud Closest Approach To Earth (1.850 AU)
Apr 15 - Dwarf Planet 136108 Haumea At Opposition (49.617 AU)
Apr 15 - Hermann Kohl's 130th Birthday (1888)
Apr 16 - Transiting Expoplanet Survyey Satellite (TESS) Falcon 9 Launch
Apr 16 - Asteroid 2712 Keaton Closest Approach To Earth (1.120 AU)
Apr 16 - Asteroid 1001 Gaussia Closest Approach To Earth (2.603 AU)
* Apr 17 - Comet C/2018 E1 (ATLAS) Perihelion (2.705 AU)
Apr 17 - Asteroid 21 Lutetia Closest Approach To Earth (1.644 AU)
Apr 17 - 20th Anniversary (1998), STS-90 Launch (Space Shuttle Columbia, Spacelab)
Apr 18 - Comet 62P/Tsuchinshan At Opposition (1.130 AU)
Apr 18 - Comet 186P/Garradd Closest Approach To Earth (3.632 AU)
* Apr 18 - Apollo Asteroid 2015 XE352 Near-Earth Flyby (0.070 AU)
Apr 19 - Moon Occults Aldebaran
Apr 19 - Comet 160P/LINEAR At Opposition (3.427 AU)
Apr 19 - Comet P/2015 Q1 (Scotti) At Opposition (3.995 AU)
Apr 19 - Apollo Asteroid 2014 JG15 Near-Earth Flyby (0.050 AU)
Apr 19 - Apollo Asteroid 2015 HD10 Near-Earth Flyby (0.098 AU)
Apr 19 - Asteroid 6312 Robheinlein Closest Approach To Earth (1.272 AU)
Apr 19 - Asteroid 42776 Casablanca Closest Approach To Earth (2.039 AU)
Apr 19 - Asteroid 193 Ambrosia Closest Approach To Earth (2.129 AU)
Apr 19 - 5th Anniversary (2013), Wolcott Meteorite Fall (Hit House in Connecticut)
Apr 20 - Comet P/2000 R2 (LINEAR) At Opposition (2.634 AU)
Apr 20 - Comet 162P/Siding Spring At Opposition (3.884 AU)
Apr 20 - Aten Asteroid 2016 JP Near-Earth Flyby (0.031 AU)
Apr 20 - Apollo Asteroid 2010 JO33 Near-Earth Flyby (0.060 AU)
Apr 20 - Atira Asteroid 164294 (2004 XZ130) Closest Approach To Earth (0.667 AU)
Apr 20 - Asteroid 25399 Vonnegut Closest Approach To Earth (1.454 AU)
Apr 20 - Asteroid 234750 Amymainzer Closest Approach To Earth (2.437 AU)
Apr 20 - Asteroid 2906 Caltech Closest Approach To Earth (2.645 AU)
Apr 20 - Kai Seigbahn's 100th Birthday (1918)
* Apr 21 - Apstar 6C CZ-3B/E Launch
Apr 21 - Comet 24P/Schaumasse Closest Approach To Earth (1.333 AU)
Apr 21 - Comet P/2008 QP20 (LINEAR-Hill) At Opposition (4.245 AU)
Apr 21 - Asteroid 4457 van Gogh Closest Approach To Earth (1.416 AU)
Apr 21 - Asteroid 39415 Janeausten Closest Approach To Earth (2.676 AU)
Apr 22 - Earth Day
Apr 22 - Lyrids Meteor Shower Peak
* Apr 22 - Blagovest-12L Proton-M/Briz-M Launch
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 - 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 - 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 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 - 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 - 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 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 - Iridium Next 51-55/GRACE-FO 1 & 2 Falcon 9 Launch
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 - 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 - 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 - Nikolai Budarin's 65th Birthday (1953)
Apr 29 - Harold Urey's 125th Birthday (1893)
* Apr 30 - SES-12 Falcon 9 Launch
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)
Apr 30 - Kuiper Belt Object 2014 FC69 At Opposition (83.812 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 ?? - GSAT-29 GSLV Mk III Launch
* May ?? - BeiDou-3 (M9 & M10) CZ-3C/YZ-1 Launch
* May ?? - GLONASS-M 759 Soyuz-2.1b/Fregat-M 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 - 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 - 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 - 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 - 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 - 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 - 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 - Cygnus CRS-9 (OA-9)/CubeRRT/HaloSat/RainCube/SORTIE/TEMPEST-D/CaNOP/
RadSat-g/EQUiSat/MemSat Antares 230 Launch (International Space Station)
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 - 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)

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