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P/2010 JC81 (WISE)

Where is it now

Distance from Sun
13.314 AU
True anomaly
192.72°
Distance from Earth
14.223 AU
As of
24 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.

Sun Earth — 0.994 AU from the Sun Earth WISE — 13.314 AU from the Sun WISE
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. WISE is 14.223 AU from Earth today (2.0 light-hours).

In the sky

Right ascension
14h 50m 34s
Declination
-31° 31′ 29″
Constellation
Centaurus
Distance from Earth
14.22 AU
Elongation from the Sun
23.03° — near the Sun — look low at dusk or dawn

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
8.133 AU
Eccentricity
0.7774
Inclination
38.69°
Orbital period
23.19 years
Perihelion
1.811 AU
Aphelion
14.455 AU
Longitude of ascending node
30.77°
Argument of periapsis
12.57°
Epoch · J2000
2455908.5
Orbit class · HTC
Halley-type comet
Earth MOID · 322.1 LD
0.8276 AU
Tisserand (Jupiter)
1.868

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
619
Data arc
3.09 years
First observed
10 May 2010
Last observed
12 June 2013
Residual RMS
0.67 ″
Solution · Otto Matic
15 April 2021

Visual & observation

Absolute magnitude (H)
10.3
Total magnitude M₁ · K₁ 10
10.3

Discovery & classification

Also known as 2010 JC81

Named

Close approaches 2 on record

When (UTC) Body Distance Lunar distances Relative speed
2158-07-30 12:28:00 Satrn 1.6933 AU 659.0 LD 8.1 km/s

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

Sources