Discovery[1] | |
---|---|
Discovered by | S. Belyavskyj |
Discovery site | Simeiz Obs. |
Discovery date | 1 October 1926 |
Designations | |
(1621) Druzhba | |
Named after | дружба – lit. friendship (in Russian)[2] |
1926 TM · 1927 AE 1931 EO · 1946 UH 1949 QS1 · 1951 EK1 1951 ER1 · 1958 GA 1979 QP4 | |
main-belt · Flora[3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 90.49 yr (33,052 days) |
Aphelion | 2.4948 AU |
Perihelion | 1.9650 AU |
2.2299 AU | |
Eccentricity | 0.1188 |
3.33 yr (1,216 days) | |
73.187° | |
0° 17m 45.6s / day | |
Inclination | 3.1730° |
181.88° | |
238.14° | |
Physical characteristics | |
Dimensions | 9.05 km (derived)[3] 9.08±0.8 km[4] 11.70±0.20 km[5] 12.694±0.296 km[6] |
12 h (dated)[7] 47.9±0.5 h (dated)[8] 99.100±0.005 h[9] 99.20±0.03 h[10] | |
0.2373±0.046[4] 0.243 (derived)[3] 0.244±0.039[6] 0.312±0.012[5] | |
Tholen = S[1] · S[3][11] B–V = 0.898[1] U–B = 0.503[1] | |
11.63[1][5][6] · 12.37±0.09[3][7][12] · 12.39[4] · 12.53±0.29[11] | |
1621 Druzhba (provisional designation 1926 TM), is a stony Florian asteroid and relatively slow rotator from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 1 October 1926, by Russian astronomer Sergey Belyavsky at Simeiz Observatory on the Crimean peninsula.[13] It was named after the Russian word for friendship.[2]
jpldata
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