100000 Astronautica

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100000 Astronautica
Discovery [1]
Discovered by J. B. Gibson
Discovery site Palomar Obs.
Discovery date 28 September 1982
MPC designation (100000) Astronautica
Named after
50th anniv. Space Age
(Latin: star sailor)[2][3]
1982 SH1 · 2002 CW115
main-belt (inner)[1]
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 32.27 yr (11,785 days)
Aphelion 2.0715 AU
Perihelion 1.7383 AU
1.9049 AU
Eccentricity 0.0875
2.63 yr (960 days)
0° 22m 29.64s / day
Inclination 21.191°
Earth MOID 0.7445 AU
Physical characteristics

100000 Astronautica, provisionally designated 1982 SH1, is an asteroid from the inner asteroid belt discovered on 28 September 1982 by James B. Gibson at Palomar Observatory, California, United States.[2]

The asteroid orbits the Sun at a distance of 1.7–2.1 AU once every 2 years and 8 months (960 days). Its orbit has an eccentricity of 0.09 and an inclination of 21° with respect to the ecliptic.[1] As no precoveries were taken, the asteroid's observation arc begins with its discovery observation in 1982.[2] It has an absolute magnitude of 16.9.[1]

This minor planet marked the milestone of the 100,000th numbered minor planet in October 2005.[4] It was named in October 2007, by the International Astronomical Union's Committee on Small Body Nomenclature to recognize the 50th anniversary of the start of the Space Age, as marked by the launch of the Soviet Sputnik spacecraft into orbit on 4 October 1957 (M.P.C. 60731).[5] The number 100,000 is significant because it marks the altitude in meters where outer space begins, as delineated by the Kármán line established by the Fédération Aéronautique Internationale. The name 'Astronautica' is Latin for 'star sailor'.[3][4]


  1. ^ a b c d e f "JPL Small-Body Database Browser: 100000 Astronautica (1982 SH1)" (2014-12-30 last obs.). Jet Propulsion Laboratory. Retrieved 2 December 2016. 
  2. ^ a b c "100000 Astronautica (1982 SH1)". Minor Planet Center. Retrieved 20 September 2016. 
  3. ^ a b Aguilar, David A.; Pulliam, Christine (9 October 2007). "Asteroid Named in Honor of 50th Anniversary of the Space Age". Harvard Smithsonian Center for Astrophysics. Archived from the original on 8 April 2010. Retrieved 18 September 2016. 
  4. ^ a b Tichá, Jana; Marsden, Brian G.; Bowell, Edward L. G.; Williams, Iwan P.; Marsden, Brian G.; Green, Daniel W. E.; et al. (December 2008). "Division III / Working Group Committee on Small Bodies Nomenclature". Transactions IAU. 4 (27A): 187–189. Bibcode:2009IAUTA..27..187T. doi:10.1017/S1743921308025489. Retrieved 20 September 2016. 
  5. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 September 2016. 

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