1925 Franklin-Adams
1925 Franklin-Adams (prov. designation: 1934 RY) is a stony background asteroid from the central regions of the asteroid belt, approximately 8.9 kilometers (5.5 miles) in diameter. It was discovered on 9 September 1934, by Dutch astronomer Hendrik van Gent at the Leiden Southern Station, annex to the Johannesburg Observatory in South Africa. The bright asteroid has a short rotation period of less than 3 hours. It was named after British amateur astronomer John Franklin Adams (1843–1912).
Franklin-Adams modeled from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | H. van Gent |
| Discovery site | Johannesburg Obs. (Leiden Southern Station) |
| Discovery date | 9 September 1934 |
| Designations | |
MPC designation | (1925) Franklin-Adams |
Named after | John Franklin Adams (British astronomer) |
Alternative designations | 1934 RY · 1969 EP1 1970 KH · 1974 KK |
Minor planet category | main-belt · (middle) background |
| Orbital characteristics | |
| Epoch 31 May 2020 (JD 2459000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 85.14 yr (31,098 d) |
| Aphelion | 2.9989 AU |
| Perihelion | 2.1046 AU |
Semi-major axis | 2.5517 AU |
| Eccentricity | 0.1752 |
Orbital period (sidereal) | 4.08 yr (1,489 d) |
Mean anomaly | 11.630° |
Mean motion | 0° 14m 30.48s / day |
| Inclination | 7.7371° |
Longitude of ascending node | 113.47° |
| 242.08° | |
| Physical characteristics | |
Mean diameter | 8.864±0.114 km |
Synodic rotation period | 2.978±0.002 h |
| 0.356±0.054 | |
| S (assumed) | |
| 12.0 12.1 | |
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