Home
Search Objects
Major Solar System Objects
Comets
Asteroids
Spacecrafts
Star Maps
Orbits
public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 5:02 
Transit: 12:56 
Sunset: 20:51
warning Set your observing location to get relevant data
Search  close
Near Earth Objects » 

Asteroid (NEO) 2021 RS5

Above the horizon.  Rise: 5:34 | Tran: 13:59 | Set: 22:25
Alt: 12.62°   Az: 64.77°   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 RS5 is in the constellation of Taurus, at a distance of 336,177,551.0 kilometers from Earth. The current Right Ascension is 04h 52m 21s and the Declination is +25° 28’ 05” (apparent coordinates). The magnitude of Asteroid (NEO) 2021 RS5 is 31.41 (data provided by JPL Horizons).

Finder Charts

Map showing Asteroid (NEO) 2021 RS5 in Taurus on May, 20 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid (NEO) 2021 RS5 in Taurus on May, 20 2025. Field of view: 15x9 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.

Celestial Coordinates

Apparent

04h 52m 21s
+25° 28’ 05”
17h 11m 34s
22h 03m 56s

J2000

04h 50m 47s
+25° 25’ 35”

Additional Information

Taurus
31.41

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: 64.5°
Max altitude: 64.0°
Azimuth: 295.5°
  • 2021 RS5 is above the horizon from Greenwich, UK.
  • Right now it is placed in the East-North-East direction at an altitude of 12.62° 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.

Distance from Earth

The distance of Asteroid (NEO) 2021 RS5 from Earth is currently 336,177,551.0 kilometers, equivalent to 2.2472081282 Astronomical Units. Light takes 18m 41.368s to travel from Asteroid (NEO) 2021 RS5 and arrive to us.

336,177,551.0
2.2472081282
18m 41.368s

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
1,290,142
0.008624

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 16 October 2024 00:00 UTC (JD: 2460600.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.22747675
Orbit inclination i 5.13472461°
Perihelion distance q 0.82224659 AU
123,006,339 km
Aphelion distance Q 1.30648310 AU
195,447,090 km
Semi-major axis a 1.06436484 AU
159,226,715 km
Orbital period period 1.0981 years
401.0830 days
Date of perihelion transit Tp 2024-Oct-14 19:00:55
2,460,598.2923 JD
Next perihelion transit 2025-Nov-19 21:00
2,460,999.3753 JD
Argument of perihelion peri 270.49380231948°
Longitude of the ascending node node 345.88792599735°
Mean anomaly M 1.9815575003951°
Mean motion n 0.89756993°/day
2h1>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
2025 May 13 04h 28m 40s +24° 47’ 29” 31.44 Taurus
2025 May 14 04h 31m 55s +24° 53’ 52” 31.44 Taurus
2025 May 15 04h 35m 10s +25° 00’ 00” 31.43 Taurus
2025 May 16 04h 38m 26s +25° 05’ 53” 31.43 Taurus
2025 May 17 04h 41m 42s +25° 11’ 31” 31.42 Taurus
2025 May 18 04h 44m 58s +25° 16’ 54” 31.42 Taurus
2025 May 19 04h 48m 14s +25° 22’ 00” 31.41 Taurus
2025 May 20 04h 51m 30s +25° 26’ 52” 31.41 Taurus
2025 May 21 04h 54m 47s +25° 31’ 28” 31.40 Taurus
2025 May 22 04h 58m 04s +25° 35’ 48” 31.40 Taurus
2025 May 23 05h 01m 22s +25° 39’ 53” 31.39 Taurus
2025 May 24 05h 04m 41s +25° 43’ 41” 31.38 Taurus
2025 May 25 05h 07m 59s +25° 47’ 14” 31.38 Taurus
2025 May 26 05h 11m 17s +25° 50’ 30” 31.37 Taurus

Additional Resources on TheSkyLive