1621 Druzhba

1621 Druzhba
Shape model of Druzhba from its lightcurve
Discovery[1]
Discovered byS. Belyavskyj
Discovery siteSimeiz Obs.
Discovery date1 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 arc90.49 yr (33,052 days)
Aphelion2.4948 AU
Perihelion1.9650 AU
2.2299 AU
Eccentricity0.1188
3.33 yr (1,216 days)
73.187°
0° 17m 45.6s / day
Inclination3.1730°
181.88°
238.14°
Physical characteristics
Dimensions9.05 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]

  1. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  4. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference Wisniewski-1997 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Ditteon-2007 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Hanus-2016a was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Stephens-2010b was invoked but never defined (see the help page).
  11. ^ a b Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Pravec-2012b was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference MPC-Druzhba was invoked but never defined (see the help page).