1355 Magoeba
1355 Magoeba, provisional designation 1935 HE, is a Hungaria asteroid and a suspected contact-binary from the innermost regions of the asteroid belt, approximately 5 kilometers in diameter. It was discovered on 30 April 1935, by English-born, South African astronomer Cyril Jackson at the Johannesburg Observatory in South Africa. The asteroid is named for Magoeba, a tribal chief in the South African Transvaal Province.
Discovery | |
---|---|
Discovered by | C. Jackson |
Discovery site | Johannesburg Obs. |
Discovery date | 30 April 1935 |
Designations | |
MPC designation | (1355) Magoeba |
Named after | Magoeba (South African chief) |
Alternative designations | 1935 HE |
Minor planet category | main-belt · Hungaria |
Orbital characteristics | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 81.71 yr (29,843 days) |
Aphelion | 1.9363 AU |
Perihelion | 1.7707 AU |
Semi-major axis | 1.8535 AU |
Eccentricity | 0.0447 |
Orbital period (sidereal) | 2.52 yr (922 days) |
Mean anomaly | 245.86° |
Mean motion | 0° 23m 26.16s / day |
Inclination | 22.827° |
Longitude of ascending node | 225.25° |
340.40° | |
Physical characteristics | |
Dimensions | 4.276±0.170 km 4.828±0.094 km 5.96 km (calculated) |
Synodic rotation period | 2.9712±0.0003 h 2.972±0.002 h 2.975±0.002 h 5.946±0.005 h 5.99±0.05 h 31.65±0.05 h 32.9±0.1 h |
0.267±0.095 0.3 (assumed) 0.4663±0.0824 0.582±0.049 | |
Tholen = X · M · E · X B–V = 0.713 U–B = 0.255 | |
13.02±0.22 · 13.05 | |
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