Back 4957 Brucemurray (كويكب) ARZ (4957) Брюсмюррей CE (4957) Brucemurray German 4957 Brucemurray Esperanto (4957) Brucemurray Spanish سیارک ۴۹۵۷ Persian (4957) Brucemurray French 4957 Brucemurray Hungarian (4957) Բրյուսմյուրեյ Armenian 4957 Brucemurray ID
| Discovery [1] | |
|---|---|
| Discovered by | E. F. Helin |
| Discovery site | Palomar Obs. |
| Discovery date | 15 December 1990 |
| Designations | |
| (4957) Brucemurray | |
Named after | Bruce C. Murray [2] (American planetary scientist) |
| 1990 XJ | |
| NEO · Amor [1][3] Mars-crosser | |
| Orbital characteristics [1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 41.35 yr (15,102 days) |
| Aphelion | 1.9082 AU |
| Perihelion | 1.2228 AU |
| 1.5655 AU | |
| Eccentricity | 0.2189 |
| 1.96 yr (715 days) | |
| 282.15° | |
| 0° 30m 11.52s / day | |
| Inclination | 35.011° |
| 254.90° | |
| 97.487° | |
| Earth MOID | 0.4258 AU · 165.9 LD |
| Physical characteristics | |
| Dimensions | 3.01 km[4] 3.06 km[5] 3.11 km (calculated)[6] 3.499±0.095 km[7] |
| 2.892 h[8][9] 2.8922 h[10] | |
| 0.132±0.023[7] 0.17[5] 0.18[4] 0.18±0.19[11] 0.20 (assumed)[6] | |
| SMASS = S [1][6] · S [12] B–V = 0.866±0.042[12] V–R = 0.526±0.018[12] V–I = 0.956±0.021[12] | |
| 14.9[1][6] · 15.1[5] · 15.10±0.3[7] | |
4957 Brucemurray, provisional designation 1990 XJ, is a stony asteroid, classified as near-Earth object of the Amor group and as Mars-crosser, approximately 3 kilometers in diameter. It was discovered by American astronomer Eleanor Helin at the Palomar Observatory in California on 15 December 1990.[3] The asteroid was named after American planetary scientist Bruce C. Murray.[2]
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