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Centaur

2010 KG12

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(2010 KG12)

Where is it now

Distance from Sun
4.813 AU
True anomaly
50.63°
Distance from Earth
4.009 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 2010 KG12 — 4.813 AU from the Sun 2010 KG12
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 KG12 is 4.009 AU from Earth today (33.3 light-minutes).

In the sky

Right ascension
22h 43m 23s
Declination
-11° 15′ 43″
Constellation
Aquarius
Distance from Earth
4.02 AU
Elongation from the Sun
138.82° — 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.

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
6.214 AU
Eccentricity
0.289
Inclination
23.06°
Orbital period
15.49 years
Perihelion
4.418 AU
Aphelion
8.01 AU
Longitude of ascending node
160.15°
Argument of periapsis
135.56°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 1,341.6 LD
3.4474 AU
Tisserand (Jupiter)
2.763

Orbit quality

Orbit very well determined (uncertainty code 0).

Observations used
79
Data arc
15.11 years
First observed
19 May 2010
Last observed
29 June 2025
Residual RMS
0.47 ″
Solution · Otto Matic
2 August 2025

Visual & observation

Absolute magnitude (H)
14.2

Discovery & classification

Centaur

Close approaches 4 on record

When (UTC) Body Distance Lunar distances Relative speed
2057-10-15 15:38:00 Juptr 0.1861 AU 72.4 LD 7.3 km/s
2057-10-15 15:38:00 Jupiter 0.1861 AU 72.4 LD 7.3 km/s
2078-09-16 02:35:00 Juptr 1.73 AU 673.2 LD 4.8 km/s

Next ten from today. 1 lunar distance = 384,400 km. Source: JPL close-approach data.

Sources