Asteroid 99942 Apophis

Asteroid 99942 Apophis is currently in the constellation of Crater. The current Right Ascension of Asteroid 99942 Apophis is 11h 43m 09s and the Declination is -17° 46’ 18” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 99942 Apophis is 18.21 (JPL).

Summary of key facts about Asteroid 99942 Apophis [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

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Additional information about Asteroid 99942 Apophis available on TheSkyLive:

Available Resources

• Position and finder charts (see also Where is Asteroid 99942 Apophis?)
• Distance from Earth (see also How far is Asteroid 99942 Apophis from Earth?)
• Rise and set times (see also When does Asteroid 99942 Apophis rise and set?)
• Brightness (see also How bright is Asteroid 99942 Apophis?)
• Orbital elements. Detailed information about Asteroid 99942 Apophis orbital parameters.
• Interactive orbit visualization. 3d visualization showing the orbit of Asteroid 99942 Apophis with respect to the major Solar System objects.
• Physical data. Detailed information about physical properties of Asteroid 99942 Apophis, such as mass and geometric properties.
• 15 days ephemerides. Table showing celestial coordinates and magnitude of Asteroid 99942 Apophis for the past and next 7 days.
• Interactive sky chart. An online planetarium application that shows where to locate Asteroid 99942 Apophis in the sky from your location.
• Live position tracker. A high precision sky chart that uses real deep sky imagery to help locate Asteroid 99942 Apophis with your telescope or on your astrophotographies.

Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 99942 Apophis is right now. Click on the image to see a more detailed fullscreen tracker view.

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 from Earth

The distance of Asteroid 99942 Apophis from Earth is currently 29,689,187 kilometers, equivalent to 0.198460 Astronomical Units. Light takes 1 minutes and 39.0325 seconds to travel from Asteroid 99942 Apophis and arrive to us.

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 Sat Apr 14 2029 at a distance of 0.000437 Astronomical Units, or 65,410 kilometers:

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Asteroid 99942 Apophis brightness

The current visual magnitude of Asteroid 99942 Apophis is 18.21.

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

Today's Asteroid 99942 Apophis rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

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.

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 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.

Date	Right AscensionR.A.	DeclinationDec.	MagnitudeMag	Constellation
2021 Jan 11	11h 44m 00s	-16° 18’ 08”	18.52	Crater
2021 Jan 12	11h 44m 05s	-16° 31’ 00”	18.48	Crater
2021 Jan 13	11h 44m 08s	-16° 43’ 37”	18.44	Crater
2021 Jan 14	11h 44m 07s	-16° 55’ 59”	18.39	Crater
2021 Jan 15	11h 44m 00s	-17° 08’ 06”	18.35	Crater
2021 Jan 16	11h 43m 50s	-17° 19’ 53”	18.31	Crater
2021 Jan 17	11h 43m 36s	-17° 31’ 22”	18.26	Crater
2021 Jan 18	11h 43m 18s	-17° 42’ 30”	18.22	Crater
2021 Jan 19	11h 42m 53s	-17° 53’ 17”	18.17	Crater
2021 Jan 20	11h 42m 25s	-18° 03’ 42”	18.13	Crater
2021 Jan 21	11h 41m 52s	-18° 13’ 42”	18.08	Crater
2021 Jan 22	11h 41m 13s	-18° 23’ 17”	18.03	Crater
2021 Jan 23	11h 40m 30s	-18° 32’ 25”	17.98	Crater
2021 Jan 24	11h 39m 39s	-18° 41’ 03”	17.93	Crater