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🌎 Location: Greenwich, United Kingdom [change]

Asteroid (NEO) 2021 AN1

Asteroid (NEO) 2021 AN1 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 AN1 Impact Earth?.

Asteroid (NEO) 2021 AN1 is currently in the constellation of Centaurus. The current Right Ascension of Asteroid (NEO) 2021 AN1 is 12h 58m 41s and the Declination is -50° 06’ 02” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2021 AN1 is 21.52 (JPL).

Summary of key facts about Asteroid (NEO) 2021 AN1 [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]:

12h 58m 41s
-50° 06’ 02”

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 AN1 available on TheSkyLive:

Available Resources

Asteroid (NEO) 2021 AN1 Position and Finder Charts

Below we provide Asteroid (NEO) 2021 AN1 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 AN1 in Centaurus on January, 21 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2021 AN1 in Centaurus 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 AN1?, a page that provides all the information needed to find Asteroid (NEO) 2021 AN1 in the sky and additional links to sky charts.

Asteroid (NEO) 2021 AN1 Distance from Earth

The distance of Asteroid (NEO) 2021 AN1 from Earth is currently 2,462,241 kilometers, equivalent to 0.016459 Astronomical Units. Light takes 8.2132 seconds to travel from Asteroid (NEO) 2021 AN1 and arrive to us.

8.2132 seconds

The following chart shows the distance of Asteroid (NEO) 2021 AN1 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 AN1 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 AN1 to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2021 AN1 to Earth happens on Mon Jan 18 2021 at a distance of 0.014267 Astronomical Units, or 2,134,303 kilometers:

Mon Jan 18 2021

Asteroid (NEO) 2021 AN1 brightness

The current visual magnitude of Asteroid (NEO) 2021 AN1 is 21.52.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2021 AN1, 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 AN1 between January 2013 and December 2100

Asteroid (NEO) 2021 AN1 rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Asteroid (NEO) 2021 AN1 is currently not visible from Greenwich, United Kingdom [change]

The rise and set times are defined as the time at which the upper limb of Asteroid (NEO) 2021 AN1 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 AN1 Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 AN1 at epoch 04 January 2021 00:00 UTC (JD: 2459219.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.23510034
Orbit inclination i 3.04226374°
Perihelion distance q 0.92754820 AU
138,759,236 km
Aphelion distance Q 1.49773253 AU
224,057,597 km
Semi-major axis a 1.21264036 AU
181,408,416 km
Orbital period period 1.3400 years
487.7491 days
Date of perihelion transit Tp 2021-Feb-28 17:28:37
2,459,274.2282 JD
Argument of perihelion peri 237.05215851145°
Longitude of the ascending node node 290.17308795686°
Mean anomaly M 319.6059612051°
Mean motion n 0.73808443°/day

Visualization of Asteroid (NEO) 2021 AN1 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid (NEO) 2021 AN1 with respect of the Sun and the orbits of the major planets. The position of Asteroid (NEO) 2021 AN1 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 AN1
View Asteroid (NEO) 2021 AN1 in the 3D Solar System Simulator

Asteroid (NEO) 2021 AN1 15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 AN1 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 AN1 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 14 08h 47m 06s +07° 51’ 29” 19.86 Cancer
2021 Jan 15 09h 02m 52s +02° 20’ 17” 19.77 Hydra
2021 Jan 16 09h 22m 41s -04° 39’ 36” 19.73 Hydra
2021 Jan 17 09h 47m 53s -13° 17’ 16” 19.78 Hydra
2021 Jan 18 10h 20m 07s -23° 14’ 43” 19.96 Hydra
2021 Jan 19 11h 00m 55s -33° 29’ 16” 20.30 Hydra
2021 Jan 20 11h 50m 35s -42° 27’ 28” 20.79 Centaurus
2021 Jan 21 12h 46m 27s -48° 56’ 53” 21.38 Centaurus
2021 Jan 22 13h 42m 45s -52° 44’ 08” 22.01 Centaurus
2021 Jan 23 14h 33m 23s -54° 23’ 39” 22.61 Lupus
2021 Jan 24 15h 15m 20s -54° 42’ 50” 23.16 Norma
2021 Jan 25 15h 48m 38s -54° 19’ 03” 23.66 Norma
2021 Jan 26 16h 14m 44s -53° 35’ 25” 24.10 Norma
2021 Jan 27 16h 35m 18s -52° 44’ 25” 24.00 Ara