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🌎 Location: Greenwich, United Kingdom [change]

Asteroid (NEO) 2021 AD

Asteroid (NEO) 2021 AD 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 AD Impact Earth?.

Asteroid (NEO) 2021 AD is currently in the constellation of Microscopium. The current Right Ascension of Asteroid (NEO) 2021 AD is 20h 48m 19s and the Declination is -34° 34’ 50” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2021 AD is 29.00 (JPL).

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

20h 48m 19s
-34° 34’ 50”

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 AD available on TheSkyLive:

Available Resources

Asteroid (NEO) 2021 AD Position and Finder Charts

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

Asteroid (NEO) 2021 AD Distance from Earth

The distance of Asteroid (NEO) 2021 AD from Earth is currently 5,872,844 kilometers, equivalent to 0.039258 Astronomical Units. Light takes 19.5897 seconds to travel from Asteroid (NEO) 2021 AD and arrive to us.

19.5897 seconds

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

During the next 10 years, the closest approach of Asteroid (NEO) 2021 AD to Earth happens on Sat Jan 16 2021 at a distance of 0.031938 Astronomical Units, or 4,777,921 kilometers:

Sat Jan 16 2021

Asteroid (NEO) 2021 AD brightness

The current visual magnitude of Asteroid (NEO) 2021 AD is 29.00.


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

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

Azimuth: 125.4°
Max altitude: 2.7°
Azimuth: 233.9°

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

The following table lists the orbital elements of Asteroid (NEO) 2021 AD at epoch 02 January 2021 00:00 UTC (JD: 2459217.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.41476826
Orbit inclination i 8.55974600°
Perihelion distance q 0.92656290 AU
138,611,837 km
Aphelion distance Q 2.23991915 AU
335,087,135 km
Semi-major axis a 1.58324102 AU
236,849,486 km
Orbital period period 1.9900 years
727.6440 days
Date of perihelion transit Tp 2021-Feb-07 02:42:20
2,459,252.6127 JD
Argument of perihelion peri 206.27167945489°
Longitude of the ascending node node 296.59808093502°
Mean anomaly M 342.62806302614°
Mean motion n 0.49474740°/day

Visualization of Asteroid (NEO) 2021 AD Orbit

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

Asteroid (NEO) 2021 AD 15 Days Ephemeris

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

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 14 22h 56m 52s +14° 13’ 13” 21.68 Pegasus
2021 Jan 15 22h 40m 31s +07° 25’ 51” 22.00 Pegasus
2021 Jan 16 22h 23m 21s +00° 04’ 20” 23.00 Aquarius
2021 Jan 17 22h 05m 35s -07° 31’ 50” 24.00 Aquarius
2021 Jan 18 21h 47m 23s -14° 58’ 50” 26.00 Capricornus
2021 Jan 19 21h 28m 59s -21° 54’ 34” 28.00 Capricornus
2021 Jan 20 21h 10m 37s -28° 03’ 57” 29.00 Microscopium
2021 Jan 21 20h 52m 36s -33° 20’ 34” 29.00 Microscopium
2021 Jan 22 20h 35m 08s -37° 45’ 00” 29.00 Microscopium
2021 Jan 23 20h 18m 25s -41° 22’ 08” 28.00 Sagittarius
2021 Jan 24 20h 02m 39s -44° 18’ 33” 27.00 Sagittarius
2021 Jan 25 19h 47m 56s -46° 41’ 03” 26.00 Telescopium
2021 Jan 26 19h 34m 18s -48° 35’ 57” 26.00 Telescopium
2021 Jan 27 19h 21m 47s -50° 08’ 30” 25.00 Telescopium