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Trans-Neptunian object

2020 UX73

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(2020 UX73)

Where is it now

Distance from Sun
35.107 AU
True anomaly
328.53°
Distance from Earth
34.177 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 2020 UX73 — 35.107 AU from the Sun 2020 UX73
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2020 UX73 is 34.177 AU from Earth today (4.7 light-hours).

In the sky

Right ascension
00h 15m 50s
Declination
-04° 45′ 24″
Constellation
Pisces
Distance from Earth
34.18 AU
Elongation from the Sun
157.72° — 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
37.776 AU
Eccentricity
0.0809
Inclination
26.34°
Orbital period
232.2 years
Perihelion
34.721 AU
Aphelion
40.831 AU
Longitude of ascending node
170.54°
Argument of periapsis
224.58°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 13,143.8 LD
33.7736 AU
Tisserand (Jupiter)
4.951

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
12
Data arc
771 days
First observed
28 August 2019
Last observed
7 October 2021
Residual RMS
0.12 ″
Solution · Otto Matic
28 November 2023

Visual & observation

Absolute magnitude (H)
9.49

Discovery & classification

TNO

Sources