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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 4:44 
Transit: 13:00 
Sunset: 21:16
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Near Earth Objects » 

Asteroid (NEO) 2021 DG

Above the horizon.  Rise: 5:49 | Tran: 14:19 | Set: 22:49
Alt: 22.04°   Az: 75.40°   Direction: East-North-East
Please note: this information pertains to a Near-Earth Object (NEO). During close approaches, our current computational model is not able to provide an accurate position, due to the high speeds of these objects. We plan to refine our algorithms to improve accuracy in the future. JPL Horizons can compute precise positions in these situations.

Asteroid (NEO) 2021 DG is in the constellation of Gemini, at a distance of 327,348,736.0 kilometers from Earth. The current Right Ascension is 06h 47m 28s and the Declination is +26° 02’ 53” (apparent coordinates). The magnitude of Asteroid (NEO) 2021 DG is 33.46.

Finder Charts

Map showing Asteroid (NEO) 2021 DG in Gemini on June, 13 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid (NEO) 2021 DG in Gemini on June, 13 2025. Field of view: 15x9 degrees. View in interactive sky chart

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

Celestial Coordinates

Apparent

06h 47m 28s
+26° 02’ 53”
18h 12m 59s
01h 00m 27s

J2000

06h 45m 54s
+26° 04’ 36”

Additional Information

Gemini
33.46

Rise and Set Times

Today's rise, transit and set times of Asteroid (NEO) 2021 DG from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 63.9°
Max altitude: 64.5°
Azimuth: 296.0°
  • 2021 DG is above the horizon from Greenwich, UK.
  • Right now it is placed in the East-North-East direction at an altitude of 22.04° above the horizon.
  • Given its current magnitude, 2021 DG 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.

Distance from Earth

The distance of Asteroid (NEO) 2021 DG from Earth is currently 327,348,736.0 kilometers, equivalent to 2.1881911452 Astronomical Units. Light takes 18m 11.918s to travel from Asteroid (NEO) 2021 DG and arrive to us.

327,348,736.0
2.1881911452
18m 11.918s

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

During the next 10 years, the closest approach of Asteroid (NEO) 2021 DG to Earth happens on Wed Feb 19 2031 at a distance of 0.007366 Astronomical Units, or 1,101,887 kilometers:

Wed Feb 19 2031
1,101,887
0.007366

Light Curve

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

Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 DG at epoch 12 September 2023 00:00 UTC (JD: 2460200.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.38031452
Orbit inclination i 9.09575900°
Perihelion distance q 0.66487987 AU
99,464,614 km
Aphelion distance Q 1.48098248 AU
221,551,825 km
Semi-major axis a 1.07293117 AU
160,508,219 km
Orbital period period 1.1114 years
405.9347 days
Date of perihelion transit Tp 2023-Jul-13 21:35:05
2,460,139.3994 JD
Next perihelion transit 2024-Aug-22 20:01
2,460,545.3341 JD
Argument of perihelion peri 280.53315408096°
Longitude of the ascending node node 330.15644643522°
Mean anomaly M 54.186605049782°
Mean motion n 0.88684205°/day
2h1>Orbit Visualization
Orbit Diagram of Asteroid (NEO) 2021 DG
View Asteroid (NEO) 2021 DG in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 DG computed for the past and next 7 days, with a 24 hours interval. Apparent celestial coordinates are provided.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2025 Jun 06 06h 24m 28s +26° 44’ 22” 33.57 Gemini
2025 Jun 07 06h 27m 36s +26° 39’ 31” 33.55 Gemini
2025 Jun 08 06h 30m 44s +26° 34’ 24” 33.54 Gemini
2025 Jun 09 06h 33m 52s +26° 29’ 02” 33.53 Gemini
2025 Jun 10 06h 37m 01s +26° 23’ 25” 33.51 Gemini
2025 Jun 11 06h 40m 10s +26° 17’ 32” 33.50 Gemini
2025 Jun 12 06h 43m 18s +26° 11’ 23” 33.48 Gemini
2025 Jun 13 06h 46m 28s +26° 04’ 58” 33.47 Gemini
2025 Jun 14 06h 49m 39s +25° 58’ 16” 33.45 Gemini
2025 Jun 15 06h 52m 49s +25° 51’ 19” 33.44 Gemini
2025 Jun 16 06h 56m 00s +25° 44’ 05” 33.42 Gemini
2025 Jun 17 06h 59m 11s +25° 36’ 35” 33.41 Gemini
2025 Jun 18 07h 02m 23s +25° 28’ 49” 33.39 Gemini
2025 Jun 19 07h 05m 34s +25° 20’ 46” 33.37 Gemini

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