Asteroid 99942 Apophis
Asteroid 99942 Apophis Position
Simplified sky chart showing where Asteroid 99942 Apophis is right now in the sky with respect to the brightest stars and constellations (see full screen Online Planetarium)
Higher precision deep sky finder chart showing where Asteroid 99942 Apophis is right now (view fullscreen)
Also check out Where is Asteroid 99942 Apophis?, a page that provides all the information needed to find Asteroid 99942 Apophis in the sky and additional links to sky charts.
Asteroid 99942 Apophis Distance
The following chart shows the distance of Asteroid 99942 Apophis from Earth as a function of time. In the chart the distance data is measured in Astronomical Units and sampled with an interval of 1 day.
The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 99942 Apophis from Earth is also available as a real time updated value in the Live Position and Data Tracker.
Closest approach of Asteroid 99942 Apophis to Earth
Between January 2013 and December 2100 the closest approach of Asteroid 99942 Apophis to Earth happens on Tue Jan 1 2013 at a distance of 0.00000000 Astronomical Units, or 0 kilometers:
NOTE: values for the closest approach are computed with a sampling interval of 1 day.
Asteroid 99942 Apophis brightness
The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 99942 Apophis, according to the most recent ephemerides data. Magnitude data is sampled with a 2 days interval and there might be inaccuracies for objects changing brightness very rapidly during the course of a few days. For comets there could be large discrepancies between the observed and predicted brightness because of their highly dynamic behaviour.
Asteroid 99942 Apophis rise and set times
The rise and set times are defined as the time at which the upper limb of Asteroid 99942 Apophis touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.
Asteroid 99942 Apophis Orbital Elements
|Perihelion distance||q||0.74607243 AU
|Date of perihelion transit||Tp||2009-Mar-04 09:54:01
|Next perihelion transit||2010-Jan-22 00:13
|Argument of perihelion||peri||126.40187952485°|
|Longitude of the ascending node||node||204.44602891898°|
Visualization of Asteroid 99942 Apophis Orbit
This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 99942 Apophis with respect of the Sun and the orbits of the major planets. The position of Asteroid 99942 Apophis and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!
Asteroid 99942 Apophis Physical Data
The following shows the known values of the most important physical parameters of Asteroid 99942 Apophis. Source: JPL Small-Body Database
|Physical Parameter||Value||Relative to Earth|
|Sideral Rotation||30.4000 hours||1.2701|
Asteroid 99942 Apophis 15 Days Ephemeris
The following table lists the ephemerides of Asteroid 99942 Apophis computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 99942 Apophis in our Online Planetarium at the chosen date.
|2020 Jan 20||01h 08m 39s||+00° 07’ 37”||N.A.|
|2020 Jan 21||01h 13m 36s||+00° 35’ 49”||N.A.|
|2020 Jan 22||01h 18m 29s||+01° 03’ 47”||N.A.|
|2020 Jan 23||01h 23m 21s||+01° 31’ 28”||N.A.|
|2020 Jan 24||01h 28m 10s||+01° 58’ 55”||N.A.|
|2020 Jan 25||01h 32m 57s||+02° 26’ 07”||N.A.|
|2020 Jan 26||01h 37m 42s||+02° 52’ 59”||N.A.|
|2020 Jan 27||01h 42m 27s||+03° 19’ 35”||N.A.|
|2020 Jan 28||01h 47m 07s||+03° 45’ 51”||N.A.|
|2020 Jan 29||01h 51m 46s||+04° 11’ 48”||N.A.|
|2020 Jan 30||01h 56m 22s||+04° 37’ 27”||N.A.|
|2020 Jan 31||02h 00m 56s||+05° 02’ 44”||N.A.|
|2020 Feb 01||02h 05m 30s||+05° 27’ 42”||N.A.|
|2020 Feb 02||02h 10m 00s||+05° 52’ 17”||N.A.|