2012 RJ15 is an asteroid in the Apollo orbit class. Its orbit takes it from 0.88 AU to 1.13 AU from the Sun; one orbit takes 370 days. Orbit from the JPL solution of 15 April 2021.
Where is it now
- Distance from Sun
- 1.123 AU
- True anomaly
- 201.21°
- Distance from Earth
- 1.107 AU
- As of
- 3 November 2026
Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.
In the sky
- Right ascension
- 19h 04m 12s
- Declination
- -14° 50′ 33″
- Constellation
- Sagittarius
- Distance from Earth
- 1.11 AU
- Elongation from the Sun
- 64.41° — well clear of the Sun
Visible from both hemispheres.
From your location
See how high it is right now, whether it is up after civil twilight, and when it rises and sets where you are.
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Two-body approximation, good to about a degree for the planets — enough to find the constellation and know whether it is up.
Orbital elements
- Semi-major axis
- 1.009 AU
- Eccentricity
- 0.124
- Inclination
- 24.76°
- Orbital period
- 370 days
- Perihelion
- 0.884 AU
- Aphelion
- 1.134 AU
- Longitude of ascending node
- 175.83°
- Argument of periapsis
- 320.21°
- Epoch · J2000
- 2461200.5
- Orbit class · APO
- Apollo
- Earth MOID · 33.9 LD
- 0.0871 AU
- Tisserand (Jupiter)
- 5.952
Orbit quality
Orbit poorly determined (uncertainty code 7).
- Observations used
- 41
- Data arc
- 8 days
- First observed
- 14 September 2012
- Last observed
- 22 September 2012
- Residual RMS
- 0.55 ″
- Solution · Otto Matic
- 15 April 2021
Visual & observation
- Absolute magnitude (H)
- 23.6
Discovery & classification
Sources
- visual properties: JPL SBDB (lookup)
- orbital elements: JPL SBDB