Back 6244 Okamoto (كويكب) ARZ (6244) Окамото CE 6244 Okamoto Esperanto (6244) Okamoto Spanish اوکاموتو ۶۲۴۴ Persian (6244) Okamoto French 6244 Okamoto Hungarian (6244) Օկամոտո Armenian 6244 Okamoto Italian 6244 Okamoto Latin
| Discovery [1] | |
|---|---|
| Discovered by | T. Seki |
| Discovery site | Geisei Obs. |
| Discovery date | 20 August 1990 |
| Designations | |
| (6244) Okamoto | |
Named after | Hiroshi Okamoto [1] (Japanese school teacher) |
| 1990 QF · 1952 SG1 1987 SL25 | |
| main-belt [1][2] · (inner) background [3] · Flora [4] | |
| Orbital characteristics [2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 84.58 yr (30,893 d) |
| Aphelion | 2.4888 AU |
| Perihelion | 1.8319 AU |
| 2.1604 AU | |
| Eccentricity | 0.1520 |
| 3.18 yr (1,160 d) | |
| 208.44° | |
| 0° 18m 37.44s / day | |
| Inclination | 5.3954° |
| 331.33° | |
| 51.576° | |
| Known satellites | 1 (D: 1.67 km P: 20.32 h)[4][5][6] |
| Physical characteristics | |
| 4.59 km (derived)[4] 6.69 km (estimated)[5] | |
| 2.8958±0.00009 h[7] 2.8958±0.0001 h[6] 2.89585±0.00009 h[8] 2.899±0.003 h[9] | |
| 0.14 (estimated)[5] 0.24 (assumed)[4] | |
| S (assumed)[4] | |
| 13.41±0.04 (R)[7] 13.5[2] 13.66±0.26[10] 13.9[4][11] | |
6244 Okamoto, provisional designation 1990 QF, is a background asteroid and binary system from the inner regions of the asteroid belt, approximately 5 kilometers (3 miles) in diameter. It was discovered on 20 August 1990, by Japanese astronomer Tsutomu Seki at the Geisei Observatory in Kōchi, Japan, and later named after Japanese school teacher Hiroshi Okamoto.[1] The presumed S-type asteroid has a short rotation period of 2.9 hours.[4] The discovery of its minor-planet moon was announced in October 2006.[6]
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