1447 Utra

1447 Utra
Discovery[1]
Discovered byY. Väisälä
Discovery siteTurku Obs.
Discovery date26 January 1938
Designations
(1447) Utra
Named after
Utra (Finnish town)[2]
1938 BB · 1936 SB
1951 KO · A918 FA
main-belt · (middle)[3]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc98.67 yr (36,038 days)
Aphelion2.6404 AU
Perihelion2.4299 AU
2.5352 AU
Eccentricity0.0415
4.04 yr (1,474 days)
285.64°
0° 14m 39.12s / day
Inclination4.7865°
35.528°
64.085°
Physical characteristics
Dimensions11.83±0.86 km[4]
11.834±0.122 km[5]
12.634±0.103 km[6]
13.26±0.53 km[7]
13.58 km (calculated)[3]
257±30 h[a]
0.20 (assumed)[3]
0.303±0.038[7]
0.3381±0.0591[6]
0.381±0.058[4]
S[3]
11.30[4][6][7] · 11.60±0.44[8] · 11.7[1][3]

1447 Utra, provisional designation 1938 BB, is a stony asteroid, slow rotator and suspected tumbler from the central region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 26 January 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[9] The asteroid was named for the Finnish town of Utra (now a part of Joensuu).[2]

  1. ^ a b c 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 AKARI was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference WISE was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Masiero-2012 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference MPC-Utra was invoked but never defined (see the help page).


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