Asteroid 99942 Apophis
Asteroid 99942 Apophis Position
Asteroid 99942 Apophis is currently in the constellation of Leo. The current Right Ascension is 09h 31m 32s and the Declination is +13° 51’ 03”.
Simplified sky chart showing where Asteroid 99942 Apophis is right now in the sky with respect to the brightest stars and constellations (see fuillscreen Online Planetarium)
Field of view: 60x30 degrees
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Hihgher 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 distance of Asteroid 99942 Apophis from Earth is currently 214,182,978 kilometers, equivalent to 1.431725 Astronomical Units. Light takes 11 minutes and 54.4375 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 0.00043719 Astronomical Units, or 65,403 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 22.13.
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
Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London
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, consideting the effect of the atmospheric refraction. As the atmoshpere conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.
Asteroid 99942 Apophis Orbital Elements
The following table lists the orbital elements of Asteroid 99942 Apophis at epoch 23 September 2008 00:00 UTC (JD: 2454733.5). Source: JPL Small-Body Database
| Element | Symbol | Value |
|---|---|---|
| Orbit eccentricity | e | 0.19119530 |
| Orbit inclination | i | 3.33136952° |
| Perihelion distance | q | 0.74607243 AU 111,610,847 km |
| Aphelion distance | Q |
1.09880417 AU 164,378,765 km |
| Semi-major axis | a |
0.92243830 AU 137,994,806 km |
| Orbital period | period |
0.8900 years 323.5969 days |
| Date of perihelion transit | Tp | 2009-Mar-04 09:54:01 2,454,894.9125 JD |
| Next perihelion transit | 2010-Jan-22 00:13 2,455,218.5095 JD |
|
| Argument of perihelion | peri | 126.40187952485° |
| Longitude of the ascending node | node | 204.44602891898° |
| Mean anomaly | M | 180.42937304564° |
| Mean motion | n | 1.11249504°/day |
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!
View Asteroid 99942 Apophis in the 3D Solar System Simulator
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 |
|---|---|---|
| Diameter | 0.325 km | 0.0000 |
| Sideral Rotation | 30.4000 hours | 1.2701 |
| Absolute Magnitude | 19.7 | |
| Geometric Albedo | 0.23 |
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 |
|---|---|---|---|---|
| 2019 Jun 18 | 09h 06m 32s | +15° 30’ 05” | 22.16 | Cancer |
| 2019 Jun 19 | 09h 09m 51s | +15° 17’ 33” | 22.16 | Cancer |
| 2019 Jun 20 | 09h 13m 12s | +15° 04’ 50” | 22.15 | Cancer |
| 2019 Jun 21 | 09h 16m 32s | +14° 51’ 55” | 22.15 | Cancer |
| 2019 Jun 22 | 09h 19m 50s | +14° 38’ 48” | 22.15 | Cancer |
| 2019 Jun 23 | 09h 23m 09s | +14° 25’ 30” | 22.14 | Leo |
| 2019 Jun 24 | 09h 26m 29s | +14° 12’ 02” | 22.14 | Leo |
| 2019 Jun 25 | 09h 29m 48s | +13° 58’ 22” | 22.14 | Leo |
| 2019 Jun 26 | 09h 33m 06s | +13° 44’ 30” | 22.13 | Leo |
| 2019 Jun 27 | 09h 36m 24s | +13° 30’ 29” | 22.13 | Leo |
| 2019 Jun 28 | 09h 39m 42s | +13° 16’ 17” | 22.12 | Leo |
| 2019 Jun 29 | 09h 43m 00s | +13° 01’ 54” | 22.12 | Leo |
| 2019 Jun 30 | 09h 46m 18s | +12° 47’ 21” | 22.11 | Leo |
| 2019 Jul 01 | 09h 49m 35s | +12° 32’ 36” | 22.11 | Leo |