2685 Masursky
2685 Masursky, provisional designation 1981 JN, is a stony Eunomian asteroid from the central regions of the asteroid belt, approximately 11 kilometers (6.8 miles) in diameter. It was discovered on 3 May 1981, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, and named after American planetary geologist Harold Masursky. In January 2000, the Cassini space probe observed the S-type asteroid from afar during its coast to Saturn.
Masursky imaged by Cassini–Huygens in January 2000 | |
| Discovery | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 3 May 1981 |
| Designations | |
MPC designation | (2685) Masursky |
| Pronunciation | /məˈzɜːrski/ |
Named after | Harold Masursky (American planetary geologist) |
Alternative designations | 1981 JN · 1950 VO 1973 QF · 1975 XJ5 1977 KU |
Minor planet category | main-belt · (middle) Eunomia |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.58 yr (16,282 d) |
| Aphelion | 2.8522 AU |
| Perihelion | 2.2874 AU |
Semi-major axis | 2.5698 AU |
| Eccentricity | 0.1099 |
Orbital period (sidereal) | 4.12 yr (1,505 d) |
Mean anomaly | 54.965° |
Mean motion | 0° 14m 21.48s / day |
| Inclination | 12.129° |
Longitude of ascending node | 215.36° |
| 288.47° | |
| Physical characteristics | |
Mean diameter | 10.744±0.170 km |
| 0.114±0.034 | |
| S | |
| 12.1 | |
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