5677 Aberdonia
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| Discovery[1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn.[2] |
| Discovery date | 21 September 1987 |
| Designations | |
| (5677) Aberdonia | |
Named after | University of Aberdeen (Scottish university)[3] |
| 1987 SQ1 · 1973 UL1 1978 WN16 · 1989 AK8 | |
| main-belt · Koronis[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 62.27 yr (22,744 days) |
| Aphelion | 3.0052 AU |
| Perihelion | 2.6635 AU |
| 2.8344 AU | |
| Eccentricity | 0.0603 |
| 4.77 yr (1,743 days) | |
| 49.056° | |
| 0° 12m 23.4s / day | |
| Inclination | 1.5003° |
| 201.12° | |
| 216.63° | |
| Physical characteristics | |
| Dimensions | 8.19 km (calculated)[4] 8.798±0.114 km[5][6] |
| 5.0813±0.0410 h[7] | |
| 0.24 (assumed)[4] 0.250±0.022[5] | |
| S[4] | |
| 12.6[1][4] · 12.4[5] · 13.224±0.003 (S)[7] · 12.70±0.32[8] | |
5677 Aberdonia, provisional designation 1987 SQ1, is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 21 September 1987, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station in Flagstaff, Arizona, United States.[2] The asteroid was named for the Scottish University of Aberdeen.[3]
The S-type asteroid is a member of the Koronis family, a group consisting of about 200 known bodies with nearly ecliptical orbits. It orbits the Sun in the outer main-belt at a distance of 2.7–3.0 AU once every 4 years and 9 months (1,743 days). Its orbit has an eccentricity of 0.06 and an inclination of 2° with respect to the ecliptic.[1]
In 1954, a first precovery was obtained at Palomar Observatory, extending the body's observation arc by 33 years prior to its official discovery at Anderson Mesa.[2]
Physical characteristics
Lightcurves
In October 2011, a rotational lightcurve of Aberdonia was obtained from photometric observations at the Palomar Transient Factory in California. Lightcurve analysis gave a rotation period of 5.0813 hours with a brightness amplitude of 0.20 magnitude (U=2).[7]
Diameter and albedo
According to the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Aberdonia measures 8.8 kilometers in diameter and its surface has an albedo of 0.25,[5][6] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and calculates a diameter of 8.2 kilometers with an absolute magnitude of 12.6.[4]
