| Discovery | |
|---|---|
| Discovered by | Catalina Sky Survey |
| Discovery date | February 11, 2007 |
| Designations | |
| 2007 CA19 | |
| Orbital characteristics[1] | |
| Epoch January 13, 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 3258 days (8.92 yr) |
| Aphelion | 5.11769 AU (765.596 Gm) |
| Perihelion | 0.502914 AU (75.2349 Gm) |
| 2.81030 AU (420.415 Gm) | |
| Eccentricity | 0.821046 |
| 4.71 yr (1720.8 d) | |
| 306.543° | |
| 0° 12m 33.142s /day | |
| Inclination | 9.58919° |
| 170.154° | |
| 102.390° | |
| Earth MOID | 0.0193363 AU (2.89267 Gm) |
| Physical characteristics | |
| 0.864 km[citation needed] | |
| Mass | 8.9×1011 kg[citation needed] |
Meandensity | 2.6 g/cm3[citation needed] |
| 17.6 | |
(481482) 2007 CA19 is a sub-kilometerasteroid, classified as anear-Earth object andpotentially hazardous asteroid of theApollo group. It briefly led the impact hazard list with a Torino Scale impact risk value of 1 for one week, ending on February 19, 2007. Before and after2007 CA19,99942 Apophis was the object with the highestPalermo Scale rating. With an observation arc of 4.8 days, it had a Palermo Scale of −0.88.[2]
2007 CA19 was discovered on February 11, 2007, by theCatalina Sky Survey at the University ofUniversity of Arizona. The object is estimated at 966 meters in diameter with a mass of a 1.2 trillion kg. Until February 15, it had an impact probability of 1/625,000 for the day March 14, 2012.[2] Additional observations through February 19 decreased the impact probability to ~1 in 300 million, making it of negligible concern. It was removed from theSentry Risk Table on February 22, 2007.[3]
2007 CA19 passed about 0.007 AU (1,000,000 km; 650,000 mi) from Venus on July 6, 1946.[1]
2008-02-14 last obs (arc=5.85 yr)
