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Trans-Neptunian object

523750

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523750 (2014 US224)

523750 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 41.42 AU to 52.6 AU from the Sun; one orbit takes 322.3 years. Discovered 28 October 2014 by Pan-STARRS 1. Orbit from the JPL solution of 14 March 2026.

Where is it now

Distance from Sun
45.246 AU
True anomaly
281.8°
Distance from Earth
44.353 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 523750 — 45.246 AU from the Sun 523750
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 523750 is 44.353 AU from Earth today (6.1 light-hours).

In the sky

Right ascension
03h 19m 57s
Declination
+29° 56′ 46″
Constellation
Aries
Distance from Earth
44.35 AU
Elongation from the Sun
154.42° — 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
47.012 AU
Eccentricity
0.1189
Inclination
11.03°
Orbital period
322.3 years
Perihelion
41.42 AU
Aphelion
52.604 AU
Longitude of ascending node
318.24°
Argument of periapsis
174.73°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,736.0 LD
40.4346 AU
Tisserand (Jupiter)
5.969

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
185
Data arc
15.2 years
First observed
14 October 2010
Last observed
25 December 2025
Residual RMS
0.54 ″
Solution · Otto Matic
14 March 2026

Visual & observation

Absolute magnitude (H)
4.78

Discovery & classification

Discovered by
Pan-STARRS 1
Discovery date
28 October 2014
Discovery site
Haleakala

Also known as 2014 US224

TNO

Sources