Astronomy:244 Sita
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Short description: Main-belt asteroid
_Sita.png) 3D model based on lightcurve data | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 14 October 1884 |
| Designations | |
| (244) Sita | |
| Pronunciation | /ˈsiːtə/ |
| Named after | Sita |
| A884 TA, 1900 UA 1957 KT, 1976 HY 1979 FL3 | |
| Minor planet category | main-belt |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.93 yr (47824 d) |
| |{{{apsis}}}|helion}} | 2.47317 astronomical unit|AU (369.981 Gm) |
| |{{{apsis}}}|helion}} | 1.87531 AU (280.542 Gm) |
| 2.17424 AU (325.262 Gm) | |
| Eccentricity | 0.13749 |
| Orbital period | 3.21 yr (1171.0 d) |
| Mean anomaly | 46.3767° |
| Mean motion | 0° 18m 26.737s / day |
| Inclination | 2.84423° |
| Longitude of ascending node | 208.982° |
| 166.029° | |
| Physical characteristics | |
| Mean diameter | 10.95±0.8 km [1] 11 km [2] |
| Mass | ~2×1015 (estimate) |
| Mean density | ~2.7 g/cm3 (estimate) [3] |
| Rotation period | 129.51 h (5.396 d) |
| Geometric albedo | 0.1941±0.033 [1] 0.194 [2] |
| S [4] | |
| Absolute magnitude (H) | 11.9 |
Sita (minor planet designation: 244 Sita) is a background asteroid from the inner region of the asteroid belt, approximately 11 kilometers (6.8 miles) in diameter. It was discovered on 14 October 1884, by an Austrian astronomer Johann Palisa in the Vienna Observatory. It was named for the Hindu deity Sita.[5]
References
- ↑ 1.0 1.1 1.2 "244 Sita". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=244;cad=1.
- ↑ 2.0 2.1 "Supplemental IRAS Minor Planet Survey". http://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab.
- ↑ G. A. Krasinsky; E. V. Pitjeva; M. V. Vasilyev; E. I. Yagudina (2002). "Hidden Mass in the Asteroid Belt". Icarus 158 (1): 98–105. doi:10.1006/icar.2002.6837. Bibcode: 2002Icar..158...98K.
- ↑ PDS spectral class data
- ↑ Schmadel, Lutz (5 August 2003). Dictionary of Minor Planet Names. Springer Science & Business Media. ISBN 9783540002383. https://books.google.com/books?id=VoJ5nUyIzCsC&dq=Sita&pg=PA36.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- 244 Sita at AstDyS-2, Asteroids—Dynamic Site
- 244 Sita at the JPL Small-Body Database
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