Skip to content
Public Universe
Trans-Neptunian object

2016 UO273

Add to an observing list or journal →

(2016 UO273)

2016 UO273 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 38.36 AU to 57.78 AU from the Sun; one orbit takes 333.3 years. Orbit from the JPL solution of 22 December 2022.

Where is it now

Distance from Sun
43.735 AU
True anomaly
74.41°
Distance from Earth
42.77 AU
As of
25 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 2016 UO273 — 43.735 AU from the Sun 2016 UO273
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 UO273 is 42.77 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
02h 56m 17s
Declination
+09° 26′ 04″
Constellation
Cetus
Distance from Earth
42.77 AU
Elongation from the Sun
166.84° — near opposition — up most of the night

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
48.07 AU
Eccentricity
0.2019
Inclination
16.05°
Orbital period
333.3 years
Perihelion
38.362 AU
Aphelion
57.777 AU
Longitude of ascending node
68.99°
Argument of periapsis
259.9°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,550.8 LD
37.3892 AU
Tisserand (Jupiter)
5.83

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
15
Data arc
8.16 years
First observed
1 October 2014
Last observed
28 November 2022
Residual RMS
0.22 ″
Solution · Otto Matic
22 December 2022

Visual & observation

Absolute magnitude (H)
7.45

Discovery & classification

TNO

Sources