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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:19 
Transit: 12:14 
Sunset: 17:09
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Near Earth Objects » 

Asteroid (NEO) 2021 DG

Above the horizon.  Rise: 8:17 | Tran: 15:39 | Set: 23:03
Alt: 52.75°   Az: 203.01°   Direction: South-South-West
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 Pisces, at a distance of 254,701,402.0 kilometers from Earth. The current Right Ascension is 01h 11m 46s and the Declination is +16° 00’ 45” (apparent coordinates). The magnitude of Asteroid (NEO) 2021 DG is 33.86 (data provided by JPL Horizons).

Finder Charts

Map showing Asteroid (NEO) 2021 DG in Pisces on February, 12 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid (NEO) 2021 DG in Pisces on February, 12 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

01h 11m 46s
+16° 00’ 45”
00h 56m 59s
02h 08m 46s

J2000

01h 10m 26s
+15° 52’ 45”

Additional Information

Pisces
33.86

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: 74.1°
Max altitude: 54.5°
Azimuth: 286.1°
  • 2021 DG is above the horizon from Greenwich, UK.
  • Right now it is placed in the South-South-West direction at an altitude of 52.75° 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 254,701,402.0 kilometers, equivalent to 1.7025737118 Astronomical Units. Light takes 14m 9.592s to travel from Asteroid (NEO) 2021 DG and arrive to us.

254,701,402.0
1.7025737118
14m 9.592s

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

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 Feb 05 00h 52m 26s +14° 19’ 46” 33.78 Pisces
2025 Feb 06 00h 54m 57s +14° 33’ 11” 33.79 Pisces
2025 Feb 07 00h 57m 28s +14° 46’ 30” 33.80 Pisces
2025 Feb 08 00h 59m 59s +14° 59’ 45” 33.81 Pisces
2025 Feb 09 01h 02m 29s +15° 12’ 55” 33.82 Pisces
2025 Feb 10 01h 05m 00s +15° 25’ 59” 33.83 Pisces
2025 Feb 11 01h 07m 31s +15° 38’ 58” 33.84 Pisces
2025 Feb 12 01h 10m 02s +15° 51’ 52” 33.85 Pisces
2025 Feb 13 01h 12m 33s +16° 04’ 40” 33.86 Pisces
2025 Feb 14 01h 15m 03s +16° 17’ 23” 33.87 Pisces
2025 Feb 15 01h 17m 34s +16° 30’ 01” 33.88 Pisces
2025 Feb 16 01h 20m 04s +16° 42’ 33” 33.89 Pisces
2025 Feb 17 01h 22m 34s +16° 55’ 01” 33.89 Pisces
2025 Feb 18 01h 25m 05s +17° 07’ 22” 33.90 Pisces

Additional Resources