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Trans-Neptunian object

455502

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455502 (2003 UZ413)

Where is it now

Distance from Sun
45.242 AU
True anomaly
141.49°
Distance from Earth
44.505 AU
As of
16 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 455502 — 45.242 AU from the Sun 455502
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 455502 is 44.505 AU from Earth today (6.2 light-hours).

In the sky

Right ascension
04h 19m 48s
Declination
+09° 36′ 04″
Constellation
Taurus
Distance from Earth
44.5 AU
Elongation from the Sun
137.91° — 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
39.384 AU
Eccentricity
0.2187
Inclination
12.04°
Orbital period
247.2 years
Perihelion
30.773 AU
Aphelion
47.996 AU
Longitude of ascending node
136.15°
Argument of periapsis
145.92°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 11,582.9 LD
29.763 AU
Tisserand (Jupiter)
5.383

Orbit quality

Orbit very well determined (uncertainty code 1).

Observations used
566
Data arc
71.59 years
First observed
29 July 1954
Last observed
28 February 2026
Residual RMS
0.44 ″
Solution · Otto Matic
7 June 2026

Physical properties

Rotation period
4.13 hours

Visual & observation

Absolute magnitude (H)
4.26

Discovery & classification

Discovered by
Palomar
Discovery date
21 October 2003
Discovery site
Palomar

Also known as 2003 UZ413

TNO

Sources