5426 Sharp
| Discovery Synodic rotation period | 4.56±0.01 h[9] 4.5609±0.0001 h[5][a] | |
|---|---|---|
| 0.30 (assumed)[4] 1.000±0.000[7][8] | ||
| E [4] | ||
| 13.7[7] · 14.0[1][4] · 15.16±0.21[10] | ||
5426 Sharp, provisional designation 1985 DD, is a bright
Carolyn Shoemaker at Palomar Observatory, California, and named after American geologist Robert P. Sharp.[2][3]
Classification and orbit
Sharp is a bright
precoveries were taken, and no prior identifications were made.[3]
Diameter and albedo
According to the surveys carried out by NASA's
albedo of 1.000.[7][8] The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.30 – a compromise value between 0.4 and 0.2, corresponding to the Hungaria asteroids both as family and orbital group – and calculates a diameter of 3.85 kilometers with an absolute magnitude of 14.0.[4]
The high albedo derived from the WISE-observations indicate that Sharp belongs to the
asteroid spectral type taxonomy.[5]
Suspected binary
A first rotational
U=2).[9] Lightcurve analysis indicated the possibility that Sharp could be orbited by a minor-planet moon
nearly every 24 hours.
In 2014/15, Sharp was re-examined by Brian Warner in a collaboration with astronomers Vladimir Benishek at
B88). The European collaboration was required because the satellite's orbital period was expected to be almost exactly an Earth day, and therefore synchronous with Earth, which would have made it impossible to obtain photometric data points covering the entire lightcurve from just one single location.[5]
The obtained lightcurvessemi-major axis of 4.5 kilometers.[6] No diameter estimate for the moon was published, as a secondary-to-primary mean-diameter ratio could not be derived.
Naming
This
M.P.C. 24917).[11]
Notes
- ^ a b Three lightcurve plots of (5426) Sharp, obtained by Brian D. Warner in collaboration with Vladimir Benishek and Andrea Ferrero between December 2014 and January 2015[5]
References
- ^ a b c d e "JPL Small-Body Database Browser: 5426 Sharp (1985 DD)" (2017-01-26 last obs.). Jet Propulsion Laboratory. Archived from the original on 31 March 2017. Retrieved 4 July 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c "5426 Sharp (1985 DD)". Minor Planet Center. Retrieved 30 March 2017.
- ^ a b c d e f "LCDB Data for (5426) Sharp". Asteroid Lightcurve Database (LCDB). Retrieved 30 March 2017.
- ^ PMID 32455359. Retrieved 30 March 2017.
- ^ a b Johnston, Robert (23 June 2015). "(5426) Sharp". johnstonsarchive.net. Retrieved 30 March 2017.
- ^ .
- ^ . Retrieved 30 March 2017.
- ^ ISSN 1052-8091. Retrieved 30 March 2017.
- . Retrieved 30 March 2017.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 March 2017.
External links
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- 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
- 5426 Sharp at AstDyS-2, Asteroids—Dynamic Site
- 5426 Sharp at the JPL Small-Body Database
