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Asteroid Near-Earth

112985

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112985 (2002 RS28)

Where is it now

Distance from Sun
3.104 AU
True anomaly
158.53°
Distance from Earth
3.312 AU
As of
11 October 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.

Orbit of Mercury Orbit of Venus Orbit of Mars Sun Earth — 0.998 AU from the Sun Earth 112985 — 3.104 AU from the Sun 112985
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 112985 is 3.312 AU from Earth today (27.5 light-minutes).

In the sky

Right ascension
08h 26m 12s
Declination
-25° 26′ 12″
Constellation
Puppis
Distance from Earth
3.31 AU
Elongation from the Sun
69.7° — well clear of the Sun

Favours the southern hemisphere; low or below the horizon from far north.

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.

How do I find my coordinates?

Google Maps on a computer

  1. Right-click the spot where you'll be observing.
  2. The first line of the menu is the coordinates, e.g. 51.50722, -0.12758 — click it and they're copied.
  3. Paste them above.

Google Maps on a phone

  1. Press and hold the spot to drop a pin.
  2. The coordinates appear in the search bar (or on the pin's card) — tap to copy, then paste above.

A full Google Maps link works too, but the short maps.app.goo.gl share links don't carry coordinates — copy the numbers instead. We round to about a kilometre; that's all the sky calculation needs.

Know your what3words address? Paste it, e.g. ///filled.count.soap. This is optional — the three words are sent to what3words to convert them, and we don't store the address or the result.

Your location stays in your browser and is sent only for this calculation. Using a what3words address is optional; if you do, the three words go to what3words to be converted and we don't record them. Set a location first, then you can save an email alert for this object. See our privacy policy.

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
2.22 AU
Eccentricity
0.4921
Inclination
46.98°
Orbital period
3.31 years
Perihelion
1.128 AU
Aphelion
3.313 AU
Longitude of ascending node
211.96°
Argument of periapsis
105.3°
Epoch · J2000
2461200.5
Orbit class · AMO
Amor
Earth MOID · 161.0 LD
0.4137 AU
Tisserand (Jupiter)
3.119

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
3,031
Data arc
40.69 years
First observed
10 May 1985
Last observed
18 January 2026
Residual RMS
0.37 ″
Solution · Otto Matic
31 March 2026

Physical properties

Mean radius
1.81 km
Rotation period
4.79 hours

Visual & observation

Geometric albedo
0.033
Absolute magnitude (H)
15.77

Discovery & classification

Discovered by
LINEAR
Discovery date
6 September 2002
Discovery site
Socorro

Also known as 2002 RS28

Amor Near-Earth Object

Sources