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Trans-Neptunian object

2014 UX228

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(2014 UX228)

Where is it now

Distance from Sun
39.628 AU
True anomaly
129.76°
Distance from Earth
38.725 AU
As of
15 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 — 0.997 AU from the Sun Earth 2014 UX228 — 39.628 AU from the Sun 2014 UX228
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2014 UX228 is 38.725 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
02h 44m 10s
Declination
+24° 56′ 18″
Constellation
Aries
Distance from Earth
38.72 AU
Elongation from the Sun
155.31° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
36.466 AU
Eccentricity
0.163
Inclination
20.66°
Orbital period
220.2 years
Perihelion
30.521 AU
Aphelion
42.41 AU
Longitude of ascending node
22.52°
Argument of periapsis
254.79°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 11,506.6 LD
29.5669 AU
Tisserand (Jupiter)
5.03

Orbit quality

Orbit reasonably well determined (uncertainty code 3).

Observations used
46
Data arc
12.37 years
First observed
9 August 2013
Last observed
21 December 2025
Residual RMS
0.12 ″
Solution · Otto Matic
5 June 2026

Visual & observation

Absolute magnitude (H)
7.55

Discovery & classification

TNO

Sources