2056 Nancy
2056 Nancy, provisional designation A909 TB, is a stony background asteroid from the inner regions of the asteroid belt, approximately 10 kilometers (6 miles) in diameter. It was discovered on 15 October 1909, by German astronomer Joseph Helffrich at Heidelberg Observatory in southwest Germany. The S-type asteroid has a tentative rotation period of 15.0 hours. It was named for Nancy Marsden, wife of British astronomer Brian G. Marsden.
| Discovery | |
|---|---|
| Discovered by | J. Helffrich |
| Discovery site | Heidelberg Obs. |
| Discovery date | 15 October 1909 |
| Designations | |
MPC designation | (2056) Nancy |
Named after | Nancy Lou Zissell Marsden (wife of Brian G. Marsden) |
Alternative designations | A909 TB · 1929 VQ 1942 RA1 · 1962 XE 1972 VC1 · 1974 HL2 |
Minor planet category | main-belt · (inner) background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 108.60 yr (39,665 d) |
| Aphelion | 2.5253 AU |
| Perihelion | 1.9098 AU |
Semi-major axis | 2.2175 AU |
| Eccentricity | 0.1388 |
Orbital period (sidereal) | 3.30 yr (1,206 d) |
Mean anomaly | 303.73° |
Mean motion | 0° 17m 54.6s / day |
| Inclination | 3.9361° |
Longitude of ascending node | 225.77° |
| 145.80° | |
| Physical characteristics | |
Mean diameter | 7.783±0.150 km 8.227±0.085 km 10.30 km (calculated) 11.19±2.42 km |
Synodic rotation period | 15.0 h |
| 0.16±0.08 0.20 (assumed) 0.3164±0.0387 0.351±0.056 | |
| SMASS = S | |
| 12.3 12.62 | |
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.