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🌎  Observing from: Greenwich, United Kingdom [change]
🌅 Sunrise: 6:50  ☀️ Transit: 13:04  🌅 Sunset: 19:19

Asteroid (NEO) 2021 CD

Asteroid (NEO) 2021 CD is currently in the constellation of Aquarius. The current Right Ascension of Asteroid (NEO) 2021 CD is 20h 52m 07s and the Declination is -02° 12’ 18” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid (NEO) 2021 CD is 28.43 (JPL).

20h 52m 07s
-02° 12’ 18”

Today's rise, transit and set times of Asteroid (NEO) 2021 CD from Greenwich, United Kingdom [change] (all times relative to the local timezone Europe/London):

Azimuth: 92.2°
Max altitude: 36.4°
Azimuth: 268.0°
  • 2021 CD is above the horizon from Greenwich, United Kingdom [change].
  • Right now it is placed in the East direction at an altitude of 3° above the horizon.
  • Given its current magnitude, 2021 CD is visible only through long exposure photography.
  • Go to interactive sky chart

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.

Available Resources

Asteroid (NEO) 2021 CD Position and Finder Charts

Below we provide Asteroid (NEO) 2021 CD 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 CD in Aquarius on March, 26 2023
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid (NEO) 2021 CD in Aquarius on March, 26 2023
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 CD?, a page that provides all the information needed to find Asteroid (NEO) 2021 CD in the sky and additional links to sky charts.

Asteroid (NEO) 2021 CD Distance from Earth

The distance of Asteroid (NEO) 2021 CD from Earth is currently 38,563,724 kilometers, equivalent to 0.257783 Astronomical Units. Light takes 2 minutes and 8.6347 seconds to travel from Asteroid (NEO) 2021 CD and arrive to us.

2 minutes and 8.6347 seconds

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

Chart of the distance of Asteroid (NEO) 2021 CD from Earth in Astronomical Units (au)

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 CD to Earth

During the next 10 years, the closest approach of Asteroid (NEO) 2021 CD to Earth happens on Sat Jan 29 2028 at a distance of 0.010620 Astronomical Units, or 1,588,731 kilometers:

Sat Jan 29 2028

Asteroid (NEO) 2021 CD Brightness

The current visual magnitude of Asteroid (NEO) 2021 CD is 28.43.


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

Chart of the magnitude of Asteroid (NEO) 2021 CD as a function of time

Asteroid (NEO) 2021 CD Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 CD at epoch 24 February 2023 00:00 UTC (JD: 2460000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.42147381
Orbit inclination i 4.71004550°
Perihelion distance q 0.42807532 AU
64,039,157 km
Aphelion distance Q 1.05180695 AU
157,348,080 km
Semi-major axis a 0.73994114 AU
110,693,619 km
Orbital period period 0.6365 years
232.4846 days
Date of perihelion transit Tp 2023-May-23 16:03:58
2,460,088.1694 JD
Argument of perihelion peri 202.72226355181°
Longitude of the ascending node node 129.21323994488°
Mean anomaly M 224.2447948516°
Mean motion n 1.54848968°/day

Visualization of Asteroid (NEO) 2021 CD Orbit

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

Asteroid (NEO) 2021 CD 15 Days Ephemeris

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

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2023 Mar 19 19h 45m 42s -05° 12’ 55” 27.80 Aquila
2023 Mar 20 19h 55m 14s -04° 47’ 44” 27.88 Aquila
2023 Mar 21 20h 04m 44s -04° 22’ 15” 27.96 Aquila
2023 Mar 22 20h 14m 09s -03° 56’ 39” 28.05 Aquila
2023 Mar 23 20h 23m 31s -03° 31’ 01” 28.14 Aquila
2023 Mar 24 20h 32m 48s -03° 05’ 29” 28.23 Aquila
2023 Mar 25 20h 41m 56s -02° 40’ 08” 28.33 Aquarius
2023 Mar 26 20h 50m 57s -02° 15’ 05” 28.42 Aquarius
2023 Mar 27 20h 59m 48s -01° 50’ 25” 28.52 Aquarius
2023 Mar 28 21h 08m 31s -01° 26’ 13” 28.62 Aquarius
2023 Mar 29 21h 17m 03s -01° 02’ 34” 28.72 Aquarius
2023 Mar 30 21h 25m 24s -00° 39’ 29” 28.83 Aquarius
2023 Mar 31 21h 33m 34s -00° 17’ 03” 29.00 Aquarius
2023 Apr 01 21h 41m 34s +00° 04’ 41” 29.00 Aquarius