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public  Greenwich, UK Greenwich, UK  ⓘ
TimezoneEurope/London
Sunrise: 7:16 
Transit: 12:14 
Sunset: 17:12
wb_twilight   (Civil Twilight)  
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Near Earth Objects » 

Asteroid (NEO) 2021 RO16

Below the horizon.  Rise: 0:02 | Tran: 4:47 | Set: 9:36
Alt: -51.53°   Az: 11.86°   Direction: North-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 RO16 is in the constellation of Libra, at a distance of 71,932,965.0 kilometers from Earth. The current Right Ascension is 14h 27m 08s and the Declination is -13° 29’ 55” (apparent coordinates). The magnitude of Asteroid (NEO) 2021 RO16 is 27.26 (data provided by JPL Horizons).

Finder Charts

Map showing Asteroid (NEO) 2021 RO16 in Libra on February, 14 2025. Field of view: 50x30 degrees
View interactive star map
Sky map showing Asteroid (NEO) 2021 RO16 in Libra on February, 14 2025. Field of view: 15x9 degrees. View in interactive sky chart

Also check out Where is Asteroid (NEO) 2021 RO16?, a page that provides all the information needed to find Asteroid (NEO) 2021 RO16 in the sky and additional links to sky charts.

Celestial Coordinates

Apparent

14h 27m 08s
-13° 29’ 55”
12h 30m 12s
02h 57m 20s

J2000

14h 25m 46s
-13° 23’ 11”

Additional Information

Libra
27.26

Rise and Set Times

Today's rise, transit and set times of Asteroid (NEO) 2021 RO16 from Greenwich, UK (all times relative to the local timezone Europe/London):

Azimuth: 103.6°
Max altitude: 25.2°
Azimuth: 256.6°
  • 2021 RO16 is below the horizon from Greenwich, UK.
  • Given its current magnitude, 2021 RO16 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 RO16 from Earth is currently 71,932,965.0 kilometers, equivalent to 0.4808421715 Astronomical Units. Light takes 3m 59.943s to travel from Asteroid (NEO) 2021 RO16 and arrive to us.

71,932,965.0
0.4808421715
3m 59.943s

The following chart shows the distance of Asteroid (NEO) 2021 RO16 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 RO16 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 RO16 to Earth happens on Sat Apr 22 2034 at a distance of 0.004919 Astronomical Units, or 735,940 kilometers:

Sat Apr 22 2034
735,940
0.004919

Light Curve

The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid (NEO) 2021 RO16, 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 RO16 as a function of time

Orbital Elements

The following table lists the orbital elements of Asteroid (NEO) 2021 RO16 at epoch 30 March 2024 00:00 UTC (JD: 2460400.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.26387086
Orbit inclination i 0.41416703°
Perihelion distance q 0.87298393 AU
130,596,537 km
Aphelion distance Q 1.49883886 AU
224,223,102 km
Semi-major axis a 1.18591139 AU
177,409,820 km
Orbital period period 1.2915 years
471.7119 days
Date of perihelion transit Tp 2024-Feb-15 15:34:44
2,460,356.1491 JD
Next perihelion transit 2025-Jun-01 08:39
2,460,827.8610 JD
Argument of perihelion peri 219.3141357008°
Longitude of the ascending node node 60.084283658741°
Mean anomaly M 33.847597164567°
Mean motion n 0.76317777°/day

Orbit Visualization

Orbit Diagram of Asteroid (NEO) 2021 RO16
View Asteroid (NEO) 2021 RO16 in the 3D Solar System Simulator

15 Days Ephemeris

The following table lists the ephemerides of Asteroid (NEO) 2021 RO16 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 07 14h 01m 44s -11° 23’ 48” 27.54 Virgo
2025 Feb 08 14h 04m 52s -11° 39’ 55” 27.51 Virgo
2025 Feb 09 14h 08m 03s -11° 56’ 08” 27.47 Virgo
2025 Feb 10 14h 11m 16s -12° 12’ 23” 27.43 Virgo
2025 Feb 11 14h 14m 32s -12° 28’ 41” 27.40 Virgo
2025 Feb 12 14h 17m 50s -12° 45’ 04” 27.36 Virgo
2025 Feb 13 14h 21m 12s -13° 01’ 30” 27.32 Virgo
2025 Feb 14 14h 24m 38s -13° 18’ 00” 27.29 Libra
2025 Feb 15 14h 28m 07s -13° 34’ 33” 27.25 Libra
2025 Feb 16 14h 31m 39s -13° 51’ 09” 27.21 Libra
2025 Feb 17 14h 35m 15s -14° 07’ 48” 27.18 Libra
2025 Feb 18 14h 38m 55s -14° 24’ 30” 27.14 Libra
2025 Feb 19 14h 42m 39s -14° 41’ 14” 27.10 Libra
2025 Feb 20 14h 46m 27s -14° 58’ 01” 27.07 Libra

Additional Resources