2085 Henan
| Discovery | |
|---|---|
| 11.40[6][10] · 11.55±0.48[13] · 11.60[8] · 11.8[5] · 11.9[1] · 12.12[7] | |
2085 Henan, provisional designation 1965 YA, is a potentially slow rotating
Henan Province in China.[2]
Orbit and classification
Henan is the
532),[3] a large family of L-type asteroids in the intermediate main-belt, which can be further divided into four distinct families.[9]
: 23
It orbits the Sun in the
semi-major axis of 2.70 AU). Its orbit has an eccentricity of 0.09 and an inclination of 4° with respect to the ecliptic.[1]
A first observation of this asteroid was found on a precovery, taken at the Lowell Observatory in July 1906. The body's observation arc begins at Goethe Link Observatory in July 1943, more than 22 years prior to its official discovery observation at Purple Mountain.[14]
Physical characteristics
In the Bus–DeMeo and
Henan family.[9]
: 23
Rotation period
As of 2017, no secure rotational
U=1).[12] An alternative period solution gave 94 hours. The latter study selected Henan because it is a suspected "Barbarian" asteroid (named after 234 Barbara) which polarimetric properties suggest that they have an unusual shape and topographic features with large concave areas.[12]
Diameter and albedo
According to the surveys carried out by the Japanese
The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.18 and calculates a diameter of 13.67 kilometers based on an absolute magnitude of 11.8.[5]
Naming
This
M.P.C. 5184).[15]
References
- ^ a b c d e f "JPL Small-Body Database Browser: 2085 Henan (1965 YA)" (2017-11-02 last obs.). Jet Propulsion Laboratory. Retrieved 18 November 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b "Asteroid 2085 Henan – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 26 October 2019.
- ^ .
- ^ a b c d e f "LCDB Data for (2085) Henan". Asteroid Lightcurve Database (LCDB). Retrieved 18 November 2017.
- ^ .
- ^ .
- ^ . Retrieved 18 November 2017.
- ^ ISBN 9780816532131.
- ^ )
- ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (2085) Henan". Geneva Observatory. Retrieved 18 November 2017.
- ^ .
- . Retrieved 18 November 2017.
- ^ a b "2085 Henan (1965 YA)". Minor Planet Center. Retrieved 18 November 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 18 November 2017.
External links
- 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
- 2085 Henan at AstDyS-2, Asteroids—Dynamic Site
- 2085 Henan at the JPL Small-Body Database
