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Trans-Neptunian object

2001 OJ108

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(2001 OJ108)

Where is it now

Distance from Sun
41.474 AU
True anomaly
36.04°
Distance from Earth
40.826 AU
As of
21 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 — 0.995 AU from the Sun Earth 2001 OJ108 — 41.474 AU from the Sun 2001 OJ108
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2001 OJ108 is 40.826 AU from Earth today (5.7 light-hours).

In the sky

Right ascension
22h 50m 54s
Declination
-13° 57′ 45″
Constellation
Aquarius
Distance from Earth
40.84 AU
Elongation from the Sun
129.18° — 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
44.905 AU
Eccentricity
0.0912
Inclination
9.1°
Orbital period
300.9 years
Perihelion
40.811 AU
Aphelion
48.999 AU
Longitude of ascending node
118.5°
Argument of periapsis
185.63°
Epoch · J2000
2452115.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,487.4 LD
39.7956 AU
Tisserand (Jupiter)
5.893

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
4
Data arc
24 hours
First observed
24 July 2001
Last observed
25 July 2001
Residual RMS
0.04 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
7.82

Discovery & classification

TNO

Sources