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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:45 
Transit: 13:02 
Sunset: 21:19
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Near Earth Objects (NEO) » 

Near Earth Object 99942 Apophis

Above the horizon.  Rise: 6:30 | Tran: 14:16 | Set: 22:02
Alt: 47.73°   Az: 235.02°   Direction: South
Please note: this information pertains to a Near-Earth Object (NEO). During close approaches, our current computational model is not able to provide a accurate data, due to the high speeds of these objects. We plan to refine our algorithms and improve accuracy in the future. To get precise data in these situations, it is recommended to use the JPL Horizons system.

Near Earth Object 99942 Apophis is in the constellation of Gemini, at a distance of 300,000,769.0 kilometers from Earth. The current Right Ascension is 07h 37m 00s and the Declination is +19° 48’ 11” (apparent coordinates). The magnitude of Near Earth Object 99942 Apophis is 21.56.

Finder Charts

The sky charts below show, at different resolutions, the position of Near Earth Object 99942 Apophis in the sky. Click on each chart to access the interactive star map tool.

Star map showing the position of Near Earth Object 99942 Apophis in the constellation of Gemini on F, d Y. Field of view: 50x30 degrees. View interactive star map.
Star map showing the position of Near Earth Object 99942 Apophis in the constellation of Gemini on F, d Y. Field of view: 15x9 degrees. View in interactive star map.

The following map uses photographic imagery from the Digitized Sky Survey (DSS) to realistically visualize the precise position of Near Earth Object 99942 Apophis against the stars in the background. The horizontal size of the map measures 60 arcminutes. Click on the image to access a more detailed full-screen view.

99942 Apophis
RA: 07h 35m 30s
Dec: +19° 51’ 39”
Simplified high-resolution deep sky chart showing the current position of Near Earth Object 99942 Apophis. Field of view: 60 x 40 arcminutes. Go to the dedicated page

Equatorial Coordinates

Apparent

07h 37m 00s
+19° 48’ 11”
02h 23m 25s
10h 00m 25s

J2000

07h 35m 30s
+19° 51’ 39”

Additional Information

Gemini
21.56

Rise and Set Times

The following table lists today's rise, transit and set times of Near Earth Object 99942 Apophis from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 70.1°
Max altitude: 58.3°
Azimuth: 289.8°

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Distance from Earth

The distance of Near Earth Object 99942 Apophis from Earth is currently 300,000,769.0 kilometers, equivalent to 2.0053812771 Astronomical Units. Light takes 16m 40.695s to travel from Near Earth Object 99942 Apophis and arrive to us.

300,000,769.0
2.0053812771
16m 40.695s

The following graph shows the distance of Near Earth Object 99942 Apophis from Earth as a function of time. In the chart the distance is measured in Astronomical Units and the data is sampled with an interval of 1 day.

Chart of the distance of Near Earth Object 99942 Apophis from Earth in Astronomical Units (au)
Note: The values in this chart may not be entirely accurate around the time of closest approach for objects passing very close to Earth at high speed (e.g., Near-Earth Objects).

Closest Approach to Earth

During the next 10 years, the closest approach of Near Earth Object 99942 Apophis to Earth will happen on Friday 13 April 2029 at a distance of 0.000254 Astronomical Units, or 38,011 kilometers:

Friday 13 April 2029
38,011
0.000254

Light Curve

The following chart shows the light curve of Near Earth Object 99942 Apophis, i.e., its apparent magnitude as a function of time. The curve is calculated using the latest ephemerides provided by JPL Horizons. The magnitude data is sampled with the interval of 2 days. Because of this sampling, inaccuracies may occur for objects that have large variations of brightness over a few days. For comets, large discrepancies can arise between the calculated brightness and the observations due to their highly dynamic, and not always precisely predictable, behavior.

Chart of the magnitude of Near Earth Object 99942 Apophis as a function of time

Orbital Elements

The following table lists the orbital elements of Near Earth Object 99942 Apophis at epoch March, 30 2024 00:00 UTC (JD: 2460400.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.19129073
Orbit inclination i 3.33973639°
Perihelion distance q 0.74607647 AU
111,611,452 km
Aphelion distance Q 1.09902781 AU
164,412,220 km
Semi-major axis a 0.92255214 AU
138,011,836 km
Orbital period period 0.8861 years
323.6569 days
Date of perihelion transit Tp March 26, 2024
2,460,395.8041 JD
Next perihelion transit February 12, 2025
2,460,719.4610 JD
Argument of perihelion peri 126.68323178996°
Longitude of the ascending node node 203.91537218109°
Mean anomaly M 5.2231884488416°
Mean motion n 1.11228913°/day

Orbit Visualization

The following chart is a 3D animated visualization of the orbit of Near Earth Object 99942 Apophis relative to the other major objects in the Solar System. You can access more advanced features using our 3D Solar System Viewer.

Physical Properties

The table below lists the known key physical properties of Near Earth Object 99942 Apophis. The source for this data is the JPL Small-Body Database.

Physical Parameter Value Relative to Earth
Diameter 0.325 km 0.0000
Sideral Rotation 30.4000 hours 1.2701
Absolute Magnitude 19.7
Geometric Albedo 0.23

15 Days Ephemeris

The following table lists the ephemerides of Near Earth Object 99942 Apophis computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
Jun 19 2025 07h 08m 15s +20° 43’ 18” 21.53 Gemini
Jun 20 2025 07h 12m 03s +20° 37’ 05” 21.54 Gemini
Jun 21 2025 07h 15m 50s +20° 30’ 33” 21.54 Gemini
Jun 22 2025 07h 19m 37s +20° 23’ 44” 21.54 Gemini
Jun 23 2025 07h 23m 22s +20° 16’ 37” 21.55 Gemini
Jun 24 2025 07h 27m 06s +20° 09’ 12” 21.55 Gemini
Jun 25 2025 07h 30m 51s +20° 01’ 30” 21.55 Gemini
Jun 26 2025 07h 34m 34s +19° 53’ 32” 21.55 Gemini
Jun 27 2025 07h 38m 17s +19° 45’ 17” 21.56 Gemini
Jun 28 2025 07h 41m 59s +19° 36’ 46” 21.56 Gemini
Jun 29 2025 07h 45m 40s +19° 27’ 57” 21.56 Gemini
Jun 30 2025 07h 49m 19s +19° 18’ 54” 21.56 Gemini
Jul 01 2025 07h 52m 59s +19° 09’ 34” 21.56 Gemini
Jul 02 2025 07h 56m 38s +18° 59’ 59” 21.57 Gemini

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