Apophis
99942 Apophis, 2004 MN4
Apophis
Asteroid
Aries
Sichtbar
Stufe 6
Professional/Research - Timing dependent
Eigenschaften
Helligkeit
19.1
Type: Asteroid
Distance: 0.922 AU
Orbital Period: 323.6 days
Diameter: 0 km
On April 13, 2029, Apophis will pass within 31,600 km of Earth — closer than geostationary satellites — becoming visible to the naked eye at magnitude ~3. This is a once-in-a-millennium close approach for an asteroid of this size. Named after the Egyptian god of chaos.
Position & Bezeichnungen
RA
02h 49m 56.8s
Dec
+14° 23' 09.6"
Sternbild
Aries
Katalog
Apophis
Physikalische Eigenschaften
Durchmesser
0 km
Masse
4.0e10 kg
Albedo
0.35
(35% reflected)
Rotation
30.4 hours
Winkeldurchmesser
0.0″ (current)
Bahneigenschaften
Große Halbachse
0.9224 AU
(138.0 million km)
Exzentrizität
0.1912
Bahnneigung
3.34°
Umlaufzeit
323.6 days
Entfernung
1.521 AU
(12.7 light-min)
Elongation
38.3°
Moderate
Beobachtungstipps
Beste Monate
April
Sichtbarkeit
Large telescope; naked eye during April 2029 flyby
Wo zu finden
Near-Earth asteroid (Aten group)
Hinweise
On April 13, 2029, Apophis will pass within 31,600 km of Earth — closer than geostationary satellites — becoming visible to the naked eye at magnitude ~3. This is a once-in-a-millennium close approach for an asteroid of this size. Named after the Egyptian god of chaos.
Entdeckung
Entdeckt von
Roy Tucker, David Tholen, Fabrizio Bernardi
Datum
2004-06-19
Aktuelle Ephemeriden
1.521
AU from Earth
227.5M
km
0.0″
Winkeldurchmesser
38°
Elongation
Sichtbarkeit
Standort in den Benutzereinstellungen festlegen um Sichtbarkeitsdaten zu sehen.