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Trans-Neptunian object

2013 RG156

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(2013 RG156)

Where is it now

Distance from Sun
46.142 AU
True anomaly
184.76°
Distance from Earth
45.224 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 2013 RG156 — 46.142 AU from the Sun 2013 RG156
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2013 RG156 is 45.224 AU from Earth today (6.3 light-hours).

In the sky

Right ascension
23h 57m 53s
Declination
+02° 16′ 10″
Constellation
Pisces
Distance from Earth
45.23 AU
Elongation from the Sun
156.36° — 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
39.34 AU
Eccentricity
0.1738
Inclination
5.37°
Orbital period
246.7 years
Perihelion
32.503 AU
Aphelion
46.176 AU
Longitude of ascending node
205.6°
Argument of periapsis
330.46°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,262.6 LD
31.5095 AU
Tisserand (Jupiter)
5.524

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
34
Data arc
6.15 years
First observed
8 September 2013
Last observed
2 November 2019
Residual RMS
0.15 ″
Solution · Otto Matic
2 July 2025

Visual & observation

Absolute magnitude (H)
7.68

Discovery & classification

TNO

Sources