(164121) 2003 YT1
Mosaic of radar images of 2003 YT1 and its moon by Arecibo Observatory on 4 May 2004 | |
| Discovery | |
|---|---|
| Discovered by | Catalina Sky Srvy. |
| Discovery site | Catalina Stn. |
| Discovery date | 18 December 2003 |
| Designations | |
| (164121) 2003 YT1 | |
| 2003 YT1 | |
| Apollo · NEO · PHA | |
| Orbital characteristics | |
| 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) |
| Earth MOID | 0.0027 AU (1.0519 LD) |
| Physical characteristics | |
| 1.0 km 1.100±0.088 km 1.561±0.202 km 1.717±0.550 km | |
| 2.34 h 2.343 h 2.343 h 3.0025±0.0001 h | |
| 0.198±0.153 0.240±0.067 0.36±0.20 0.486±0.040 0.4861±0.0395 0.5848 (derived) | |
| V | |
| 16.2 16.20±0.3 | |
(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. The V-type asteroid has a short rotation period of 2.3 hours. Its 210-meter sized minor-planet moon was discovered at Arecibo Observatory in May 2004.