274301 Wikipedia

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274301 Wikipedia
Orbit of Wikipedia
Discovery [1]
Discovered by Andrushivka Obs.
Discovery site Andrushivka Obs.
Discovery date 25 August 2008
Designations
MPC designation (274301) Wikipedia
Pronunciation /ˌwɪkiˈpdiə/
WIK-i-PEE-dee-ə
Named after
Wikipedia
(online encyclopedia)[1]
2008 QH24 · 1997 RO4
2007 FK34
main-belt[1][2] · (inner)
Vesta[3]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 20.62 yr (7,530 d)
Aphelion 2.7316 AU
Perihelion 2.0307 AU
2.3811 AU
Eccentricity 0.1472
3.67 yr (1,342 d)
228.37°
0° 16m 5.52s / day
Inclination 6.7341°
183.41°
139.47°
Physical characteristics
Mean diameter
1.3 km (est. at 0.20)[4]
1.5±0.5 km (assumed)[5]
V or S (SDSS-MOC)[3]
16.9[1]

274301 Wikipedia (/ˌwɪkiˈpdiə/ WIK-i-PEE-dee-ə), provisional designation 2008 QH24, is a Vestian asteroid orbiting in the inner region of the asteroid belt, approximately 1.3 kilometers (0.8 mi) in diameter. It was discovered on 25 August 2008 by astronomers at the Andrushivka Astronomical Observatory in northern Ukraine.[1] The asteroid was named after the online encyclopedia Wikipedia in January 2013.[2]

Discovery

Wikipedia was discovered by astronomers from the Andrushivka Astronomical Observatory (A50) in Ukraine, the country's only privately owned observatory,[6] which has discovered nearly 90 asteroids since 2003.[7] It was first observed by the Andrushivka team on 25 August 2008 at 22:47 UTC.[1] It was also observed on the next night and it received provisional designation 2008 QH24.[8] After it was also observed on 6 September by the Andrushivka team, the orbit of the asteroid was calculated accurately. It was shown that the asteroid 2008 QH24 was the same as 1997 RO4 and 2007 FK34 previously spotted by observatories Caussols-ODAS (France), Mt. Lemmon Survey and Steward Observatory (both in Arizona, U.S.).[1]

On 18 April 2011, Wikipedia received the number 274301.[9]

Classification and orbit

Wikipedia is a member of the Vesta family, one of the largest asteroid families in the asteroid belt.[3] It is located in proximity of one of the family's core members, 21791 Mattweegman.[10] Vestian asteroids have a composition akin to cumulate eucrites (HED meteorites). They are thought to have originated deep within 4 Vesta's crust, possibly from the Rheasilvia crater, a large impact crater on its southern hemisphere near the South pole, which formed as a result of a subcatastrophic collision.[11]

It orbits the Sun in the inner asteroid belt at a distance of 2.0–2.7 AU (300–400 million km) once every 3 years and 8 months (1,342 days; semi-major axis of 2.38 AU). Its orbit has an eccentricity of 0.15 and an inclination of 7° with respect to the ecliptic.[2] The asteroid's observation arc begins almost 11 years prior to its official discovery observation, with its first observation as 1997 RO4 by the ODAS survey in September 1997.[1]

Name

The decision of the Committee for Small Body Nomenclature to assign the name "Wikipedia" to the asteroid was published in the Minor Planet Circulars on 27 January 2013 (M.P.C. 82403).[12] The name was proposed by Andriy Makukha, a board member of Wikimedia Ukraine. It was submitted to the Committee by the owner of the observatory, Yuri Ivashchenko.[6] It reads:

See also

References

  1. ^ a b c d e f g h "274301 Wikipedia (2008 QH24)". Minor Planet Center. Retrieved 7 July 2018. 
  2. ^ a b c d e "JPL Small-Body Database Browser: 274301 Wikipedia (2008 QH24)" (2018-04-21 last obs.). Jet Propulsion Laboratory. Retrieved 7 July 2018. 
  3. ^ a b c "Asteroid 274301 Wikipedia". Small Bodies Data Ferret. Retrieved 7 July 2018. 
  4. ^ "Asteroid Size Estimator". CNEOS NASA/JPL. Retrieved 7 July 2018. 
  5. ^ Workman, Robert (5 February 2013). "'Wikipedia' is in space — as an asteroid". NBC News. Retrieved 12 February 2013. 
  6. ^ a b "Астероїд, відкритий в Україні, було названо "Вікіпедія"". RegioNews. 31 January 2013. 
  7. ^ "Minor Planet Discoverers". Minor Planet Center. 31 May 2018. Retrieved 7 July 2018. 
  8. ^ "MPS 255948" (PDF). Minor Planet Center. 14 September 2008. 
  9. ^ "MPC 74684" (PDF). Minor Planet Center. 18 April 2011. 
  10. ^ "Asteroid (274301) Wikipedia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 22 June 2018. 
  11. ^ Kelley, Michael S.; Vilas, Faith; Gaffey, Michael J.; Abell, Paul A. (September 2003). "Quantified mineralogical evidence for a common origin of 1929 Kollaa with 4 Vesta and the HED meteorites". Icarus. 165 (1): 215–218. Bibcode:2003Icar..165..215K. doi:10.1016/S0019-1035(03)00149-0. Retrieved 7 July 2018. 
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 7 July 2018. 

External links