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Trans-Neptunian object

669535

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669535 (2012 XR157)

669535 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 37.04 AU to 59.35 AU from the Sun; one orbit takes 334.5 years. Discovered 11 December 2012 by Trujillo, C., Sheppard, S. S.. Orbit from the JPL solution of 14 March 2026.

Where is it now

Distance from Sun
39.276 AU
True anomaly
314.15°
Distance from Earth
38.763 AU
As of
26 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 669535 — 39.276 AU from the Sun 669535
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 669535 is 38.763 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
06h 00m 12s
Declination
+00° 53′ 13″
Constellation
Orion
Distance from Earth
38.76 AU
Elongation from the Sun
120.48° — 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
48.191 AU
Eccentricity
0.2315
Inclination
29.95°
Orbital period
334.5 years
Perihelion
37.036 AU
Aphelion
59.346 AU
Longitude of ascending node
223.52°
Argument of periapsis
275.16°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,081.6 LD
36.1834 AU
Tisserand (Jupiter)
5.239

Orbit quality

Orbit very well determined (uncertainty code 2).

Observations used
104
Data arc
19.82 years
First observed
31 January 2006
Last observed
28 November 2025
Residual RMS
0.54 ″
Solution · Otto Matic
14 March 2026

Visual & observation

Absolute magnitude (H)
6.27

Discovery & classification

Discovered by
Trujillo, C., Sheppard, S. S.
Discovery date
11 December 2012
Discovery site
Cerro Tololo

Also known as 2012 XR157

TNO

Sources