Information About

99942 Apophis




name=99942 Apophis
  Discovery Date June 19 , 2004
  Category Aten
  Epoch November 26 , 2005 ( JD 24537005)
  Semimajor 137992 G M (0922 AU )
  Perihelion 111633 Gm (0746 AU)
  Aphelion 164351 Gm (1099 AU)
  Eccentricity 0191
  Period 323587 D (089 A )
  Inclination 3331 °
  Asc Node 204466°
  Arg Peri 126364°
  Mean Anomaly 111000°
  Speed 3073 km/ S
  Dimensions ~300 m (estimated)
  Mass 5 Kg (estimated)
  Density g/ Cm³
  Gravity
  Escape Velocity
  Rotation d
  Spectral Class
  Abs Mag 192
  Albedo


  url http://wwwastronomycom/asy/defaultaspxc=a&id=3434
  title Asteroid Apophis set for a makeoverauthor=Bill Cooke
  journal Astronomy Magazinedate= August 18 2005 urldate= November 3 2005


  url http://naiarcnasagov/impact/news_detailcfmID=161title=Schweickart Proposes Study of Impact Risk from Apophis
  publisher NASA Ames Research Centre