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Trans-Neptunian object

2013 UT22

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(2013 UT22)

Where is it now

Distance from Sun
39.791 AU
True anomaly
84.71°
Distance from Earth
38.981 AU
As of
18 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 — 0.996 AU from the Sun Earth 2013 UT22 — 39.791 AU from the Sun 2013 UT22
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2013 UT22 is 38.981 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
03h 52m 13s
Declination
-00° 49′ 37″
Constellation
Eridanus
Distance from Earth
38.98 AU
Elongation from the Sun
144.53° — 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
42.472 AU
Eccentricity
0.2117
Inclination
29.34°
Orbital period
276.8 years
Perihelion
33.48 AU
Aphelion
51.463 AU
Longitude of ascending node
194.24°
Argument of periapsis
139.81°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,656.7 LD
32.5221 AU
Tisserand (Jupiter)
4.991

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
65
Data arc
5.04 years
First observed
7 December 2012
Last observed
21 December 2017
Residual RMS
0.2 ″
Solution · Otto Matic
8 September 2021

Visual & observation

Absolute magnitude (H)
7.19

Discovery & classification

TNO

Sources