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🌎 Location: Greenwich, United Kingdom [change]

Asteroid 2010 RF12

Asteroid 2010 RF12 is currently in the constellation of Ophiucus. The current Right Ascension of Asteroid 2010 RF12 is 16h 42m 11s and the Declination is -21° 42’ 28” (topocentric coordinates computed for the selected location: Greenwich, United Kingdom [change]). The current magnitude of Asteroid 2010 RF12 is 31.19 (JPL).

Summary of key facts about Asteroid 2010 RF12 [tip: you can also create a Quick Access page for this data if you access it frequently and would like to have a simpler view]:

16h 42m 11s
-21° 42’ 28”
  • 2010 RF12 is above the horizon from Greenwich, United Kingdom [change].
  • It is visible looking in the South-East direction at an altitude of 6° above the horizon.
  • Given its current magnitude, 2010 RF12 is visible only through long exposure photography.
  • See also 2010 RF12 rise and set times.
  • 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.

Additional information about Asteroid 2010 RF12 available on TheSkyLive:

Available Resources

Asteroid 2010 RF12 Position and Finder Charts

Below we provide Asteroid 2010 RF12 finder charts showing where the object is right now in the sky with respect to the brightest stars. The first finder chart has a field of view of 50 degrees, while the second one has a field of view of 10 degrees. Click on each finder chart to access a full screen interactive Online Planetarium.

Map showing Asteroid 2010 RF12 in Ophiucus on January, 28 2021
Field of view: 50x30 degrees
View fullscreen
Map showing Asteroid 2010 RF12 in Ophiucus on January, 28 2021
Field of view: 10x6 degrees
View fullscreen
 = visible to the naked eye
 = binocular, brighter than 10th magnitude
= current altitude ≥ 30°   = current altitude < 30°   = below the horizon
Location: Greenwich, United Kingdom [change]

Higher precision deep sky finder chart, 60 arcmin wide, showing where Asteroid 2010 RF12 is right now. Click on the image to see a more detailed fullscreen tracker view.

2010 RF12
RA: 16h 42m 11s
Dec: -21° 42’ 28”
Deep sky finder chart for Asteroid 2010 RF12
Field of view: 60x40 arcmins
View fullscreen

Also check out Where is Asteroid 2010 RF12?, a page that provides all the information needed to find Asteroid 2010 RF12 in the sky and additional links to sky charts.

Asteroid 2010 RF12 Distance from Earth

The distance of Asteroid 2010 RF12 from Earth is currently 210,206,815 kilometers, equivalent to 1.405146 Astronomical Units. Light takes 11 minutes and 41.1745 seconds to travel from Asteroid 2010 RF12 and arrive to us.

11 minutes and 41.1745 seconds

The following chart shows the distance of Asteroid 2010 RF12 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.

Distance of Asteroid 2010 RF12 from Earth between January 2013 and December 2100

The value of the reported distance might be somewhat inaccurate around the times of closest approach for objects passing extremely close to Earth. The value of the distance of 2010 RF12 from Earth is also available as a real time updated value in the Live Position and Data Tracker.

Closest approach of Asteroid 2010 RF12 to Earth

Between January 2013 and December 2100, the closest approach of Asteroid 2010 RF12 to Earth happens on Tue Sep 6 2095 at a distance of 0.000262 Astronomical Units, or 39,156 kilometers:

Tue Sep 6 2095

NOTE: values for the closest approach are computed with a sampling interval of 1 day.

Asteroid 2010 RF12 brightness

The current visual magnitude of Asteroid 2010 RF12 is 31.19.


The following chart is the predicted light curve (visual magnitude as a function of time) of Asteroid 2010 RF12, 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.

Predicted magnitude of Asteroid 2010 RF12 between January 2013 and December 2100

Asteroid 2010 RF12 rise and set times

Location: Greenwich, United Kingdom [change]
Latitude: 51° 28’ 47” N
Longitude: 0° 00’ 00” E
Timezone: Europe/London

Today's Asteroid 2010 RF12 rise, transit and set times from Greenwich, United Kingdom [change] are the following (all times relative to the local timezone Europe/London):

Azimuth: 111.7°
Max altitude: 16.8°
Azimuth: 248.3°

The rise and set times are defined as the time at which the upper limb of Asteroid 2010 RF12 touches the horizon, considering the effect of the atmospheric refraction. As the atmospheric conditions cannot be modeled precisely the times reported here should be considered correct with an approximation of few minutes.

Asteroid 2010 RF12 Orbital Elements

The following table lists the orbital elements of Asteroid 2010 RF12 at epoch 30 May 2020 00:00 UTC (JD: 2459000.5). Source: JPL Small-Body Database

Element Symbol Value
Orbit eccentricity e 0.18822317
Orbit inclination i 0.88281939°
Perihelion distance q 0.86091420 AU
128,790,932 km
Aphelion distance Q 1.26014708 AU
188,515,320 km
Semi-major axis a 1.06053064 AU
158,653,126 km
Orbital period period 1.0900 years
398.9177 days
Date of perihelion transit Tp 2020-Sep-16 16:39:41
2,459,109.1942 JD
Next perihelion transit 2021-Oct-20 14:41
2,459,508.1119 JD
Argument of perihelion peri 267.60035973225°
Longitude of the ascending node node 163.83055992786°
Mean anomaly M 261.90977702438°
Mean motion n 0.90244188°/day

Visualization of Asteroid 2010 RF12 Orbit

This 3d orbit diagram is a feature of our 3D Solar System Simulator and shows the orbit of Asteroid 2010 RF12 with respect of the Sun and the orbits of the major planets. The position of Asteroid 2010 RF12 and the planets along their orbits in this diagram accurately represents the current configuration of the objects in the Solar System. This is an experimental feature and it requires a WebGL enabled browser. Please provide us feedback!

Orbit Diagram of Asteroid 2010 RF12
View Asteroid 2010 RF12 in the 3D Solar System Simulator

Asteroid 2010 RF12 15 Days Ephemeris

The following table lists the ephemerides of Asteroid 2010 RF12 computed for the past and next 7 days, with a 24 hours interval. Click on each row of the table to locate Asteroid 2010 RF12 in our Online Planetarium at the chosen date.

Date Right AscensionR.A. DeclinationDec. MagnitudeMag Constellation
2021 Jan 21 16h 18m 24s -20° 55’ 09” 31.18 Scorpius
2021 Jan 22 16h 21m 42s -21° 02’ 31” 31.18 Scorpius
2021 Jan 23 16h 25m 00s -21° 09’ 37” 31.18 Ophiucus
2021 Jan 24 16h 28m 18s -21° 16’ 27” 31.19 Ophiucus
2021 Jan 25 16h 31m 36s -21° 23’ 02” 31.19 Ophiucus
2021 Jan 26 16h 34m 54s -21° 29’ 21” 31.19 Ophiucus
2021 Jan 27 16h 38m 12s -21° 35’ 25” 31.19 Ophiucus
2021 Jan 28 16h 41m 30s -21° 41’ 12” 31.19 Ophiucus
2021 Jan 29 16h 44m 48s -21° 46’ 45” 31.19 Ophiucus
2021 Jan 30 16h 48m 06s -21° 52’ 02” 31.20 Ophiucus
2021 Jan 31 16h 51m 23s -21° 57’ 05” 31.20 Ophiucus
2021 Feb 01 16h 54m 39s -22° 01’ 50” 31.20 Ophiucus
2021 Feb 02 16h 57m 57s -22° 06’ 21” 31.20 Ophiucus
2021 Feb 03 17h 01m 14s -22° 10’ 36” 31.20 Ophiucus