1648 Shajna
| Discovery | |
|---|---|
| Discovered by | P. Shajn |
| Discovery site | Simeiz Obs. |
| Discovery date | 5 September 1935 |
| Designations | |
| MPC designation | 1648 Shajna |
|
Named after
|
Couple of astronomers (Pelageya and Grigory) |
| 1935 RF · 1934 CK1 1938 MC · 1941 FD 1948 LC · 1951 EX2 1952 SX · 1952 UW 1955 QT · 1955 RP A921 GB · A924 EQ |
|
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 95.60 yr (34,917 days) |
| Aphelion | 2.6971 AU |
| Perihelion | 1.7741 AU |
| 2.2356 AU | |
| Eccentricity | 0.2064 |
| 3.34 yr (1,221 days) | |
| 191.95° | |
| 0° 17m 41.64s / day | |
| Inclination | 4.5721° |
| 130.42° | |
| 134.71° | |
| Physical characteristics | |
| Dimensions |
8.26±1.47 km 8.30±0.30 km 9.23 km (calculated) 9.450±0.141 km |
|
6.41368±0.00001 h 6.41369±0.00005 h 6.4140±0.0002 h 6.4140±0.0164 h (R) 6.4248±0.0164 h (S) |
|
|
0.191±0.016 0.20 (assumed) 0.247±0.049 0.35±0.13 |
|
|
B–V = 0.792 U–B = 0.497 Tholen = S · S |
|
| 11.838±0.003 (R) · 12.21 · 12.54 | |
1648 Shajna, provisional designation 1935 RF, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 5 September 1935, by Russian astronomer Pelageya Shajn at Simeiz Observatory on the Crimean peninsula. Two weeks later, it was independently discovered by Cyril Jackson at Johannesburg Observatory, South Africa.
Shajna orbits the Sun at a distance of 1.8–2.7 AU once every 3 years and 4 months (1,221 days). Its well-determined orbit has an eccentricity of 0.21 and an inclination of 5° with respect to the ecliptic. In 1921, Shajna was first identified as 1921 GB at Heidelberg Observatory. Its first used observation was taken at Uccle in 1934, when it was identified as 1934 CK1, extending the body's observation arc by one year prior to its official discovery observation.
In July 2005, a rotational light-curve of was obtained by French amateur astronomer Laurent Bernasconi. It gave a well-defined rotation period of 6.4140 hours with a brightness variation of 0.65 magnitude (U=3). Two modeled light-curves from various surveys including the Lowell photometric database gave similar periods of 6.41368 and 6.41369 hours (U=n.a.). Photometric observations at the Palomar Transient Factory in September 2012, gave nearly identical periods of 6.4140 and 6.4248 hours in the R- and S-band, respectively (U=2/2).
...
Wikipedia