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public LocationGreenwich, UK
Sunrise: 5:01 
Transit: 13:04 
Sunset: 21:06
sunny   (Daytime)   What's Visible Now?
Near Earth Objects » 

Asteroid (NEO) 2021 RS5

Above the horizon.  Rise: 6:46 | Tran: 14:20 | Set: 21:54
Alt: 27.24°   Az: 95.42°   Direction: 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 RS5 is in the constellation of Cancer, at a distance of 299,132,118.0 kilometers from Earth. The current Right Ascension is 09h 00m 55s and the Declination is +17° 48’ 22” (apparent coordinates). The magnitude of Asteroid (NEO) 2021 RS5 is 30.93 (data provided by JPL Horizons).

Finder chart of 2021 RS5 in Cancer on July,16 2024
Map showing Asteroid (NEO) 2021 RS5 in Cancer on July, 16 2024. Field of view: 50x30 degrees
View interactive star map

Celestial Coordinates


09h 00m 55s
+17° 48’ 22”
19h 26m 26s
04h 27m 22s


08h 59m 32s
+17° 54’ 11”

Additional Information


Rise and Set Times

Today's rise, transit and set times of Asteroid (NEO) 2021 RS5 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 72.1°
Max altitude: 56.4°
Azimuth: 287.8°
  • 2021 RS5 is above the horizon from Greenwich, UK.
  • Right now it is placed in the East direction at an altitude of 27.24° above the horizon.
  • Given its current magnitude, 2021 RS5 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.

Finder Charts

Finder chart of 2021 RS5
Sky map showing Asteroid (NEO) 2021 RS5 in Cancer on July, 16 2024. Field of view: 10x6 degrees. View in interactive sky chart

Also check out Where is Asteroid (NEO) 2021 RS5?, a page that provides all the information needed to find Asteroid (NEO) 2021 RS5 in the sky and additional links to sky charts.

Distance from Earth

The distance of Asteroid (NEO) 2021 RS5 from Earth is currently 299,132,118.0 kilometers, equivalent to 1.9995747038 Astronomical Units. Light takes 16m 37.797s to travel from Asteroid (NEO) 2021 RS5 and arrive to us.

16m 37.797s

The following chart shows the distance of Asteroid (NEO) 2021 RS5 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 RS5 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 RS5 to Earth happens on Tue Mar 11 2031 at a distance of 0.008624 Astronomical Units, or 1,290,142 kilometers:

Tue Mar 11 2031

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2021 RS5, 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 RS5 as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 RS5 at epoch 12 September 2023 00:00 UTC (JD: 2460200.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.22736550
Orbit inclination i 5.13519108°
Perihelion distance q 0.82234328 AU
123,020,803 km
Aphelion distance Q 1.30633018 AU
195,424,214 km
Semi-major axis a 1.06433673 AU
159,222,509 km
Orbital period period 1.0981 years
401.0671 days
Date of perihelion transit Tp 2023-Sep-09 17:03:12
2,460,197.2106 JD
Next perihelion transit 2024-Oct-14 18:39
2,460,598.2776 JD
Argument of perihelion peri 270.46862204068°
Longitude of the ascending node node 345.89855898162°
Mean anomaly M 2.9526225697743°
Mean motion n 0.89760549°/day

Orbit Visualization

Orbit Diagram of Asteroid (NEO) 2021 RS5
View Asteroid (NEO) 2021 RS5 in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 RS5 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
2024 Jul 09 08h 35m 35s +19° 46’ 03” 31.01 Cancer
2024 Jul 10 08h 39m 01s +19° 30’ 59” 31.00 Cancer
2024 Jul 11 08h 42m 28s +19° 15’ 39” 30.99 Cancer
2024 Jul 12 08h 45m 54s +19° 00’ 00” 30.98 Cancer
2024 Jul 13 08h 49m 20s +18° 44’ 05” 30.97 Cancer
2024 Jul 14 08h 52m 46s +18° 27’ 52” 30.96 Cancer
2024 Jul 15 08h 56m 13s +18° 11’ 23” 30.95 Cancer
2024 Jul 16 08h 59m 40s +17° 54’ 36” 30.93 Cancer
2024 Jul 17 09h 03m 05s +17° 37’ 32” 30.92 Cancer
2024 Jul 18 09h 06m 32s +17° 20’ 12” 30.91 Cancer
2024 Jul 19 09h 09m 59s +17° 02’ 35” 30.90 Cancer
2024 Jul 20 09h 13m 26s +16° 44’ 41” 30.89 Cancer
2024 Jul 21 09h 16m 53s +16° 26’ 30” 30.88 Cancer
2024 Jul 22 09h 20m 19s +16° 08’ 03” 30.87 Cancer

Additional Resources