1648 Shajna

1648 Shajna
Shape model of Shajna from its lightcurve
Discovery
Discovered byP. Shajn
Discovery siteSimeiz Obs.
Discovery date5 September 1935
Designations
(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 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc95.99 yr (35,061 days)
Aphelion2.6971 AU
Perihelion1.7737 AU
2.2354 AU
Eccentricity0.2065
3.34 yr (1,221 days)
250.93°
0° 17m 41.64s / day
Inclination4.5723°
130.42°
134.71°
Physical characteristics
Dimensions8.26±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
Tholen = S · S
B–V = 0.792
U–B = 0.497
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. It was later named after the discoverer and her husband, Russian astronomers Grigory Shajn.