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Centaur

2010 JO142

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(2010 JO142)

Where is it now

Distance from Sun
6.159 AU
True anomaly
125.2°
Distance from Earth
5.274 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 JO142 — 6.159 AU from the Sun 2010 JO142
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2010 JO142 is 5.274 AU from Earth today (43.9 light-minutes).

In the sky

Right ascension
03h 08m 03s
Declination
+12° 01′ 54″
Constellation
Aries
Distance from Earth
5.27 AU
Elongation from the Sun
150.64° — 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
5.77 AU
Eccentricity
0.473
Inclination
12.89°
Orbital period
13.86 years
Perihelion
3.041 AU
Aphelion
8.499 AU
Longitude of ascending node
202.96°
Argument of periapsis
75.73°
Epoch · J2000
2461200.5
Orbit class · CEN
Centaur
Earth MOID · 801.7 LD
2.06 AU
Tisserand (Jupiter)
2.711

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
67
Data arc
14.37 years
First observed
15 May 2010
Last observed
27 September 2024
Residual RMS
0.63 ″
Solution · Otto Matic
12 October 2024

Physical properties

Mean radius
1.28 km

Visual & observation

Geometric albedo
0.09
Absolute magnitude (H)
16.14

Discovery & classification

Centaur

Close approaches 11 on record

When (UTC) Body Distance Lunar distances Relative speed
2063-09-07 22:02:00 Juptr 0.8235 AU 320.5 LD 8 km/s
2094-06-26 06:15:00 Jupiter 0.1997 AU 77.7 LD 8.2 km/s
2094-06-26 06:15:00 Juptr 0.1997 AU 77.7 LD 8.2 km/s
2183-05-12 16:33:00 Juptr 0.3106 AU 120.9 LD 8.2 km/s
2183-05-12 16:33:00 Jupiter 0.3106 AU 120.9 LD 8.2 km/s

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

Sources