Back 9971 Ishihara (كويكب) ARZ (9971) Исихара CE 9971 Ishihara Esperanto ایشیهارا ۹۹۷۱ Persian (9971) Ishihara French 9971 Ishihara Hungarian (9971) Իշիհարա Armenian 9971 Ishihara Italian 9971 Ishihara Latin (9971) Ishihara Polish
_Ishihara.png) Shape model of Ishihara from its lightcurve | |
| Discovery [1] | |
|---|---|
| Discovered by | K. Endate K. Watanabe |
| Discovery site | Kitami Observatory |
| Discovery date | 16 April 1993 |
| Designations | |
| (9971) Ishihara | |
Named after | Takahiro Ishihara (Japanese astronomer)[2] |
| 1993 HS · 1991 YC2 1996 EU1 | |
| main-belt [1][3] · Flora [4] | |
| Orbital characteristics [3] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24.91 yr (9,097 days) |
| Aphelion | 2.4465 AU |
| Perihelion | 1.9164 AU |
| 2.1814 AU | |
| Eccentricity | 0.1215 |
| 3.22 yr (1,177 days) | |
| 158.69° | |
| 0° 18m 21.24s / day | |
| Inclination | 2.7482° |
| 20.550° | |
| 246.01° | |
| Physical characteristics | |
| Dimensions | 4.986±0.053 km[5] 5.012±0.069 km[6] |
| 6.715±0.0036 h[7] 6.71574±0.00001 h[8] | |
Pole ecliptic latitude | (42.0°, 76.0°) (λ1/β1)[8] |
| 0.2328±0.0281[6] 0.235±0.027[5] | |
| S (assumed)[4] | |
| 13.7[6] · 13.9[3] · 13.852±0.006 (R)[7] · 14.3[4] | |
9971 Ishihara (prov. designation: 1993 HS) is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 5 kilometers (3.1 miles) in diameter. It was discovered by Japanese amateur astronomers Kin Endate and Kazuro Watanabe at Kitami Observatory on 16 April 1993,[1] and named after Takahiro Ishihara, president of the astronomical society at Hiroshima.[2]
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