Discovery[1] | |
---|---|
Discovered by | Y. Väisälä |
Discovery site | Turku Obs. |
Discovery date | 22 October 1938 |
Designations | |
(1520) Imatra | |
Named after | Imatra (Finnish town)[2] |
1938 UY · 1938 YH | |
main-belt · (outer)[3] Ursula[4] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 78.53 yr (28,682 days) |
Aphelion | 3.4132 AU |
Perihelion | 2.8113 AU |
3.1123 AU | |
Eccentricity | 0.0967 |
5.49 yr (2,005 days) | |
179.71° | |
0° 10m 46.2s / day | |
Inclination | 15.241° |
253.40° | |
116.83° | |
Physical characteristics | |
Dimensions | 53.41 km (derived)[3] 53.42±19.70 km[5] 53.435±0.370 km[6] 53.61±1.4 km[7] 53.79±14.73 km[8] 55.55±0.60 km[9] 56.094±1.824 km[10] 58.63±0.70 km[11] |
5.23 h (dated)[12] 18.609±0.004 h[13] 18.635±0.004 h[14] | |
0.039±0.009[11] 0.04±0.03[8] 0.0428 (derived)[3] 0.05±0.06[5] 0.0561±0.0109[10] 0.058±0.002[9] 0.0615±0.003[7] 0.062±0.006[6] | |
SMASS = C[1] · C[3] | |
10.0[7][9][10] · 10.30[8][11] · 10.40±0.35[15] · 10.4[1][3] · 10.43[5] | |
1520 Imatra, provisional designation 1938 UY, is a carbonaceous Ursula asteroid from the outer region of the asteroid belt, approximately 54 kilometers in diameter. It was discovered on 22 October 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland, who named after the Finnish town of Imatra.[2][16]
jpldata
was invoked but never defined (see the help page).springer
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was invoked but never defined (see the help page).