Astronomy:860 Ursina
From HandWiki
| Discovery | |
|---|---|
| Discovered by | Max Wolf |
| Discovery site | Heidelberg |
| Discovery date | 22 January 1917 |
| Designations | |
| (860) Ursina | |
| Pronunciation | /ɜːrˈsaɪnə/[1] |
| 1917 BD | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 113.24 yr (41362 days) |
| |{{{apsis}}}|helion}} | 3.0938 astronomical unit|AU (462.83 Gm) |
| |{{{apsis}}}|helion}} | 2.5013 AU (374.19 Gm) |
| 2.7975 AU (418.50 Gm) | |
| Eccentricity | 0.10590 |
| Orbital period | 4.68 yr (1709.1 d) |
| Mean anomaly | 247.967° |
| Mean motion | 0° 12m 38.304s / day |
| Inclination | 13.297° |
| Longitude of ascending node | 309.388° |
| 21.338° | |
| Earth MOID | 1.49307 AU (223.360 Gm) |
| Jupiter MOID | 2.21886 AU (331.937 Gm) |
| TJupiter | 3.279 |
| Physical characteristics | |
| Mean radius | 14.66±0.8 km |
| Rotation period | 9.386 h (0.3911 d) |
| Geometric albedo | 0.1618±0.020 |
| Absolute magnitude (H) | 10.26 |
860 Ursina is a minor planet orbiting the Sun that was discovered in 1917 by German astronomer Max Wolf. The origin of the name is unknown.[3]
Photometric observations of this asteroid collected during 1999 show a rotation period of 9.386 ± 0.002 hours with a brightness variation of 0.22 magnitude.[4]
References
- ↑ 'Ursinus' in Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ "860 Ursina (1917 BD)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=860;cad=1.
- ↑ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 77, ISBN 3642297188, https://books.google.com/books?id=aeAg1X7afOoC&pg=PA77.
- ↑ Warner, B. (March 2000), "Asteroid Photometry at the Palmer Divide Observatory", The Minor Planet Bulletin 27: 4–6, Bibcode: 2000MPBu...27....4W.
External links
- Lightcurve plot of 860 Ursina, Palmer Divide Observatory, B. D. Warner (1999)
- Asteroid Lightcurve Database (LCDB), query form (info )
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 860 Ursina at AstDyS-2, Asteroids—Dynamic Site
- 860 Ursina at the JPL Small-Body Database
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