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🌎 Location: Greenwich, United Kingdom [change]

Asteroid (NEO) 2021 AT5

Asteroid (NEO) 2021 AT5 is a Near Earth Object. If you've heard news about a potential impact of this asteroid with the Earth, please check out Will Asteroid Asteroid (NEO) 2021 AT5 Impact Earth?.

Asteroid (NEO) 2021 AT5 is currently in the constellation of Antlia. The current Right Ascension of Asteroid (NEO) 2021 AT5 is 10h 43m 27s and the Declination is -33° 06’ 40” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2021 AT5 is 22.38 (JPL).

Summary of key facts about Asteroid (NEO) 2021 AT5 [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]:

10h 43m 27s
-33° 06’ 40”

If you need to access this information frequently for your observations, you can create a simple customized Quick Access page, so that you can easily bookmark it in your browser favorites or add a shortcut to your mobile phones' home screen.

Additional information about Asteroid (NEO) 2021 AT5 available on TheSkyLive:

Available Resources

Asteroid (NEO) 2021 AT5 Position and Finder Charts

Below we provide Asteroid (NEO) 2021 AT5 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid (NEO) 2021 AT5 in Antlia on January, 21 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2021 AT5 in Antlia on January, 21 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Also check out Where is Asteroid (NEO) 2021 AT5?, a page that provides all the information needed to find Asteroid (NEO) 2021 AT5 in the sky and additional links to sky charts.

Asteroid (NEO) 2021 AT5 Distance from Earth

The distance of Asteroid (NEO) 2021 AT5 from Earth is currently 4,928,574 kilometers, equivalent to 0.032945 Astronomical Units. Light takes 16.4400 seconds to travel from Asteroid (NEO) 2021 AT5 and arrive to us.

16.4400 seconds

The following chart shows the distance of Asteroid (NEO) 2021 AT5 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.

Distance of Asteroid (NEO) 2021 AT5 from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth.

Closest approach of Asteroid (NEO) 2021 AT5 to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2021 AT5 to Earth happens on Wed Jan 13 2021 at a distance of 0.005021 Astronomical Units, or 751,066 kilometers:

Wed Jan 13 2021

Asteroid (NEO) 2021 AT5 brightness

The current visual magnitude of Asteroid (NEO) 2021 AT5 is 22.38.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2021 AT5, 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.

Predicted magnitude of Asteroid (NEO) 2021 AT5 between January 2013 and December 2100

Asteroid (NEO) 2021 AT5 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 (NEO) 2021 AT5 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 122.9°
Max altitude: 5.6°
Azimuth: 237.0°

The rise and set times are defined as the time at which the upper limb of Asteroid (NEO) 2021 AT5 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 (NEO) 2021 AT5 Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 AT5 at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.45903458
Orbit inclination i 7.62213022°
Perihelion distance q 0.98545197 AU
147,421,517 km
Aphelion distance Q 2.65785659 AU
397,609,688 km
Semi-major axis a 1.82165428 AU
272,515,603 km
Orbital period period 2.4600 years
898.0435 days
Date of perihelion transit Tp 2021-Jan-06 21:16:15
2,459,221.3863 JD
Next perihelion transit 2023-Jun-23 22:18
2,460,119.4298 JD
Argument of perihelion peri 171.2916654327°
Longitude of the ascending node node 293.80744779957°
Mean anomaly M 271.45298968835°
Mean motion n 0.40087146°/day

Visualization of Asteroid (NEO) 2021 AT5 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid (NEO) 2021 AT5 with respect of the Sun and the orbits of the major planets. The position of Asteroid (NEO) 2021 AT5 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!

Orbit Diagram of Asteroid (NEO) 2021 AT5
View Asteroid (NEO) 2021 AT5 in the 3D Solar System Simulator

Asteroid (NEO) 2021 AT5 15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 AT5 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid (NEO) 2021 AT5 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 14 07h 59m 21s +20° 39’ 20” 16.50 Gemini
2021 Jan 15 09h 17m 58s -07° 04’ 00” 18.42 Hydra
2021 Jan 16 09h 53m 31s -19° 15’ 02” 19.66 Hydra
2021 Jan 17 10h 12m 51s -25° 05’ 48” 20.51 Hydra
2021 Jan 18 10h 24m 47s -28° 23’ 04” 21.13 Hydra
2021 Jan 19 10h 32m 49s -30° 27’ 12” 21.61 Antlia
2021 Jan 20 10h 38m 35s -31° 51’ 32” 22.00 Antlia
2021 Jan 21 10h 42m 52s -32° 51’ 56” 22.32 Antlia
2021 Jan 22 10h 46m 10s -33° 36’ 54” 22.60 Antlia
2021 Jan 23 10h 48m 47s -34° 11’ 17” 22.84 Antlia
2021 Jan 24 10h 50m 51s -34° 38’ 07” 23.05 Antlia
2021 Jan 25 10h 52m 32s -34° 59’ 17” 23.24 Antlia
2021 Jan 26 10h 53m 53s -35° 16’ 09” 23.41 Antlia
2021 Jan 27 10h 55m 01s -35° 29’ 34” 23.57 Antlia