5474 Gingasen
| Discovery Synodic rotation period | 2.91 h (superseded)[7] 3.6242±0.0003 h[4][a] 3.6272±0.0015 h[8] 3.628±0.005 h[9] | |
|---|---|---|
| 0.20 (assumed)[3] 0.480±0.109[6] | ||
| S [3] | ||
| 12.70±0.2 (R)[4] · 12.79±0.10 (R)[a] · 12.886±0.002 (R)[8] · 12.90[6] · 13.1[1] · 13.14±0.35[10] · 13.28±0.112[3][11] | ||
5474 Gingasen, provisional designation 1988 XE1, is a Vestian asteroid and suspected binary system[4] from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.
It was discovered on 3 December 1988, by Japanese amateur astronomers Tetsuya Fujii and Kazuro Watanabe at Kitami Observatory, Japan.[12] It is named for the "Gingasen" railroad track in Japan.[2]
Classification and orbit
Gingasen is a stony
Cerro El Roble Station in Chile, extending the body's observation arc by 17 years prior to its official discovery observation.[12]
Physical characteristics
Diameter and albedo
According to the survey carried out by NASA's
albedo of 0.480,[6] while the Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 6.68 kilometers with an absolute magnitude of 13.28.[3]
Rotation period
Four rotational
U=1-).[7]
Suspected binary
During the photometric observations in 2008, the astronomers came across strong evidence that Gingasen is likely an asynchronous
asteroid moon orbiting it every 3.1095 hours. However, no mutual occultation/eclipse events were observed.[4][5]
Naming
This
M.P.C. 26930).[13]
Notes
- ^ a b c Pravec (2008) web: rotation period 3.6242±0.0003 hours with a brightness amplitude of 0.18 magnitude and a quality code of 3. Summary figures for (5474) Gingasen at Collaborative Asteroid Lightcurve Link (CALL)
References
- ^ a b c d "JPL Small-Body Database Browser: 5474 Gingasen (1988 XE1)" (2016-08-27 last obs.). Jet Propulsion Laboratory. Retrieved 4 July 2017.
- ^ ISBN 978-3-540-00238-3.
- ^ a b c d e f "LCDB Data for (5474) Gingasen". Asteroid Lightcurve Database (LCDB). Retrieved 13 December 2016.
- ^ ISSN 1052-8091. Retrieved 13 December 2016.
- ^ a b Johnston, Robert. "(5474) Gingasen". johnstonsarchive.net. Retrieved 28 May 2015.
- ^ . Retrieved 13 December 2016.
- ^ a b Behrend, Raoul. "Asteroids and comets rotation curves – (5474) Gingasen". Geneva Observatory. Retrieved 13 December 2016.
- ^ . Retrieved 13 December 2016.
- ^ ISSN 1052-8091. Retrieved 13 December 2016.
- . Retrieved 13 December 2016.
- . Retrieved 13 December 2016.
- ^ a b c "5474 Gingasen (1988 XE1)". Minor Planet Center. Retrieved 13 December 2016.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 December 2016.
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
- 5474 Gingasen at AstDyS-2, Asteroids—Dynamic Site
- 5474 Gingasen at the JPL Small-Body Database
