Back 4954 Eric (كويكب) ARZ (4954) Эрик CE 4954 Eric Esperanto (4954) Eric Spanish اریک ۴۹۵۴ Persian 4954 Eric Finnish (4954) Eric French 4954 Eric Hungarian (4954) Էրիկ Armenian 4954 Eric ID
_Eric.png) Shape model of Eric from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | Brian P. Roman |
| Discovery site | Palomar Obs. |
| Discovery date | 23 September 1990 |
| Designations | |
| (4954) Eric | |
| 1990 SQ | |
| Orbital characteristics[2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 14681 days (40.19 yr) |
| Aphelion | 2.8993 AU (433.73 Gm) |
| Perihelion | 1.10393 AU (165.146 Gm) |
| 2.0016 AU (299.44 Gm) | |
| Eccentricity | 0.44848 |
| 2.83 yr (1034.4 d) | |
| 314.18° | |
| 0° 20m 52.944s / day | |
| Inclination | 17.4461° |
| 358.52° | |
| 52.429° | |
| Earth MOID | 0.194843 AU (29.1481 Gm) |
| Physical characteristics | |
| Dimensions | 10.8 km |
| 5.4 km | |
| 12.052[3] hours | |
| S (SMASSII) | |
| 12.6 | |
4954 Eric (prov. designation: 1990 SQ) is an eccentric, stony asteroid, classified as near-Earth object of the Amor group, approximately 11 kilometers (6.8 miles) in diameter. It was discovered by American astronomer Brian Roman at Palomar Observatory on 23 September 1990.[4] The asteroid was named after its discoverer's son, Eric Roman.
It is the largest near-Earth asteroid discovered since 3552 Don Quixote in 1983.[2] On 2007 October 11 the asteroid passed 0.2865 AU (42,860,000 km; 26,630,000 mi) from Earth.[4] It currently makes closer approaches to Mars than it does Earth. The asteroid has a rotation period of 12.05 hours.[3]
Other large near-Earth asteroids include 1036 Ganymed (32 km), 3552 Don Quixote (19 km), 433 Eros (17 km), and 1866 Sisyphus (8.5 km).[2][5]
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