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(164121) 2003 YT1
_2003_YT1&sq=&lang=en&file=File:2003YT1.may4.mos.gif) Mosaic of radar images of 2003 YT1 and its moon by Arecibo Observatory on 4 May 2004 | |
| Discovery[1] | |
|---|---|
| Discovered by | Catalina Sky Srvy. |
| Discovery site | Catalina Stn. |
| Discovery date | 18 December 2003 |
| Designations | |
| (164121) 2003 YT1 | |
| 2003 YT1 | |
| Apollo · NEO · PHA[1][2] | |
| Orbital characteristics[2] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 35.41 yr (12,934 d) |
| Aphelion | 1.4335 AU |
| Perihelion | 0.7857 AU |
| 1.1096 AU | |
| Eccentricity | 0.2919 |
| 1.17 yr (427 d) | |
| 11.417° | |
| 0° 50m 35.88s / day | |
| Inclination | 44.064° |
| 38.335° | |
| 91.042° | |
| Known satellites | 1 (D: 210 m; P: 30 h)[3][4] |
| Earth MOID | 0.0027 AU (1.0519 LD) |
| Physical characteristics | |
| 1.0 km[3] 1.100±0.088 km[5] 1.561±0.202 km[6] 1.717±0.550 km[7] | |
| 2.34 h[8] 2.343 h[3] 2.343 h[9] 3.0025±0.0001 h[10] | |
| 0.198±0.153[7] 0.240±0.067[6] 0.36±0.20[11] 0.486±0.040[11] 0.4861±0.0395[5] 0.5848 (derived)[12] | |
| V[12][13][14] | |
| 16.2[2][5][12] 16.20±0.3[7] | |
(164121) 2003 YT1, provisional designation 2003 YT1, is a bright asteroid and synchronous binary system on a highly eccentric orbit, classified as near-Earth object and potentially hazardous asteroid of the Apollo group, approximately 2 kilometers (1.2 miles) in diameter. It was discovered on 18 December 2003, by astronomers with the Catalina Sky Survey at the Catalina Station near Tucson, Arizona, in the United States.[1] The V-type asteroid has a short rotation period of 2.3 hours.[12] Its 210-meter sized minor-planet moon was discovered at Arecibo Observatory in May 2004.[3][4]
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