4868 Knushevia
| Discovery Synodic rotation period | 3.1422±0.0002 h[5] 4.45±0.01 h[8] 4.54±0.01 h[9] 4.717±0.002 h[10] | |
|---|---|---|
| 0.4 (assumed)[4] 1.000±0.000[6][7] | ||
| E [4] | ||
| 13.9[6] · 14.26±0.41[11] · 14.8[1][4] | ||
4868 Knushevia, provisional designation 1989 UN2 is a bright Hungaria
Classification and orbit
Knushevia is a bright member of the
Hungaria family, which forms the innermost dense concentration of asteroids in the Solar System. It orbits the Sun in the inner main-belt at a distance of 1.8–2.1 AU once every 2 years and 9 months (1,003 days). Its orbit has an eccentricity of 0.07 and an inclination of 22° with respect to the ecliptic.[1]
Physical characteristics
Lightcurves and satellite
Between 2008 and 2011, three rotational
In May 2015, Warner measured a period of 3.1422 hours with an amplitude of 0.09 (U=3). The photometric observation also revealed that Knushevia might be a binary asteroid with a minor-planet moon orbiting it every 11.922 hours. The results, however, are tentative only.[5]
Diameter and albedo
According to the survey carried out by NASA's
The Collaborative Asteroid Lightcurve Link assumes an albedo for bright E-type asteroids of 0.40 – derived from 434 Hungaria, the family's largest member and namesake – and calculates a diameter of 2.30 kilometers based on an absolute magnitude of 14.8.[4]
Naming
This
M.P.C. 45336).[12]
References
- ^ a b c d e "JPL Small-Body Database Browser: 4868 Knushevia (1989 UN2)" (2016-11-30 last obs.). Jet Propulsion Laboratory. Archived from the original on 16 September 2020. Retrieved 7 July 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b "4868 Knushevia (1989 UN2)". Minor Planet Center. Retrieved 7 July 2017.
- ^ a b c d e f "LCDB Data for (4868) Knushevia". Asteroid Lightcurve Database (LCDB). Retrieved 7 July 2017.
- ^ ISSN 1052-8091. Retrieved 7 July 2017.
- ^ .
- ^ . Retrieved 7 July 2017.
- ^ ISSN 1052-8091. Retrieved 7 July 2017.
- ^ ISSN 1052-8091. Retrieved 7 July 2017.
- ^ ISSN 1052-8091. Retrieved 7 July 2017.
- . Retrieved 7 July 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 7 July 2017.
External links
- Lightcurve plot of 4868 Knushevia, Palmer Divide Observatory, B. D. Warner (2011)
- 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
- 4868 Knushevia at AstDyS-2, Asteroids—Dynamic Site
- 4868 Knushevia at the JPL Small-Body Database
