Global Information1559 Kustaanheimo information
 Lightcurve-based 3D-model of Kustaanheimo | |
| Discovery[1] | |
|---|---|
| Discovered by | L. Oterma |
| Discovery site | Turku Obs. |
| Discovery date | 20 January 1942 |
| Designations | |
MPC designation | (1559) Kustaanheimo |
Named after | Paul Kustaanheimo (Finnish astronomer)[2] |
Alternative designations | 1942 BF · 1935 FP 1935 HB |
Minor planet category | main-belt · (inner)[3] |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 82.20 yr (30,023 days) |
| Aphelion | 2.7103 AU |
| Perihelion | 2.0702 AU |
Semi-major axis | 2.3903 AU |
| Eccentricity | 0.1339 |
Orbital period (sidereal) | 3.70 yr (1,350 days) |
Mean anomaly | 119.55° |
Mean motion | 0° 16m 0.12s / day |
| Inclination | 3.1911° |
Longitude of ascending node | 327.92° |
Argument of perihelion | 216.59° |
| Physical characteristics | |
| Dimensions | 9.07±0.65 km[4] 10.725±0.176 km[5] 11.395±0.103 km[6] 12.39 km (calculated)[3] 12.70±0.85 km[7] |
Synodic rotation period | 4.286±0.003 h[8] 4.3±0.1 h[a] 4.302±0.002 h[9] 4.30435 h[10] |
Geometric albedo | 0.193±0.028[7] 0.20 (assumed)[3] 0.2401±0.0455[6] 0.267±0.048[5] 0.373±0.077[4] |
Spectral type | S[3] |
Absolute magnitude (H) | 11.90[3][4][6][7] · 12.0[1] |
1559 Kustaanheimo, provisional designation 1942 BF, is a stony asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 20 January 1942, by Finnish astronomer Liisi Oterma at the Iso-Heikkilä Observatory near Turku in southwest Finland.[11] The asteroid was named after Finnish astronomer Paul Kustaanheimo (1924–1997).
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