9991 Anežka
Synodic rotation period | 4.4692±0.0019 h[6] | |
| 0.08 (assumed)[3] 0.097±0.013[4][5] | ||
| C [3] | ||
| 12.7[4] · 13.3[1] · 13.415±0.003 (R)[6] · 13.86[3] · 13.89±0.32[7] | ||
9991 Anežka, provisional designation 1997 TY7, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 10 kilometers in diameter.
The asteroid was discovered on 5 October 1997, by Czech astronomer Zdeněk Moravec at the South Bohemian Kleť Observatory in the Czech Republic.[8] It was named after the discoverer's grandmother, Anežka Moravcová.[2]
Orbit and classification
Anežka is a carbonaceous asteroid and member of the Themis family, a dynamical family of outer main-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.7 AU once every 5 years and 9 months (2,094 days). Its orbit has an eccentricity of 0.16 and an inclination of 2° with respect to the ecliptic.[1] It was first identified as 1977 DX9 at the Japanese Kiso Observatory in 1977, extending the body's observation arc by 20 years prior to its discovery.[8]
Physical characteristics
Rotation period
A rotational
Diameter and albedo
According to the survey carried out by the
Naming
This
References
- ^ a b c d "JPL Small-Body Database Browser: 9991 Anezka (1997 TY7)" (2017-05-01 last obs.). Jet Propulsion Laboratory. Retrieved 22 June 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (9991) Anezka". Asteroid Lightcurve Database (LCDB). Retrieved 1 August 2016.
- ^ . Retrieved 1 August 2016.
- ^ . Retrieved 4 December 2016.
- ^ . Retrieved 1 January 2016.
- . Retrieved 1 August 2016.
- ^ a b "9991 Anezka (1997 TY7)". Minor Planet Center. Retrieved 1 August 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 1 August 2016.
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 (5001)-(10000) – Minor Planet Center
- 9991 Anežka at AstDyS-2, Asteroids—Dynamic Site
- 9991 Anežka at the JPL Small-Body Database
