2007 CA19

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2007 CA19
Discovery
Discovered by Catalina Sky Survey
Discovery date February 11, 2007
Designations
Alternative names none
Minor planet category Apollo asteroid,
Earth-crosser asteroid
Mars-crosser asteroid
Orbital characteristics
Epoch April 10, 2007 (MJD 54200)
Aphelion 3.5364 AU
Perihelion 0.534 AU
Semi-major axis 2.03517 AU
Eccentricity 0.737636
Orbital period 1060.47 days
Mean anomaly 343.616°
Inclination 8.407°
Longitude of ascending node 178.802°
Argument of perihelion 95.374°
Physical characteristics
Dimensions 0.864 km
Mass 8.9×1011 kg
Mean density 2.6 g/cm³
Absolute magnitude (H) 17.9

2007 CA19 (also written 2007 CA19) is a near-Earth asteroid. It led the impact hazard list, with a Torino Scale impact risk value of 1, for one week, ending on February 19, 2007. Before and after 2007 CA19, 99942 Apophis was the object with the highest Palermo Scale rating. With an observation arc of 4.8 days, 2007 CA19 had a Palermo Scale of −0.88.[1]

2007 CA19 was discovered on February 11, 2007 by the Catalina Sky Survey at the University of University of Arizona. The object is estimated at 966 metres in diameter with a mass of a 1.2x1012 kg. Until February 15, it had an impact probability of 1/625000 for the day March 14, 2012.[1] Additional observations through February 19 decreased the impact probability to ~1 in 300 million, making it of negligible concern. It was removed from the Sentry Risk Table on February 22, 2007.[2]

2007 CA19 passed about 0.007 AU (1,000,000 km; 650,000 mi) from Venus on July 6, 1946.[3]

References[edit]

  1. ^ a b "Earth Impact Risk Summary: 2007 CA19". Wayback Machine: NASA/JPL Near-Earth Object Program Office.  (1.6e-06 = 1 in 625,000 chance)
  2. ^ "Date/Time Removed". NASA/JPL Near-Earth Object Program Office. Retrieved 2013-07-27. 
  3. ^ "JPL Close-Approach Data: (2007 CA19)". 2008-02-14 last obs (arc=5.85 yr). Retrieved 2013-09-07. 

See also[edit]

External links[edit]