| 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) |
| Aphelion | 3.0938 AU (462.83 Gm) |
| Perihelion | 2.5013 AU (374.19 Gm) |
| 2.7975 AU (418.50 Gm) | |
| Eccentricity | 0.10590 |
| 4.68 yr (1709.1 d) | |
| 247.967 ° | |
| 0° 12m 38.304s / day | |
| Inclination | 13.297° |
| 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 |
| 9.386 h (0.3911 d) | |
| 0.1618±0.020 | |
| 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. Retrieved 4 May 2016.
- ^ Schmadel, Lutz D. (2012), Dictionary of Minor Planet Names (6th ed.), Springer, p. 77, ISBN 3642297188.
- ^ 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 Archived 16 December 2017 at the Wayback Machine)
- 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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