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Trans-Neptunian object

2015 TQ363

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(2015 TQ363)

2015 TQ363 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 38.31 AU to 56.19 AU from the Sun; one orbit takes 324.8 years. Orbit from the JPL solution of 14 May 2025.

Where is it now

Distance from Sun
38.902 AU
True anomaly
334.67°
Distance from Earth
37.995 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 2015 TQ363 — 38.902 AU from the Sun 2015 TQ363
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 TQ363 is 37.995 AU from Earth today (5.3 light-hours).

In the sky

Right ascension
03h 13m 35s
Declination
-04° 11′ 14″
Constellation
Eridanus
Distance from Earth
37.99 AU
Elongation from the Sun
155.52° — 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
47.251 AU
Eccentricity
0.1893
Inclination
27.27°
Orbital period
324.8 years
Perihelion
38.306 AU
Aphelion
56.195 AU
Longitude of ascending node
176.89°
Argument of periapsis
256.14°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,564.9 LD
37.4254 AU
Tisserand (Jupiter)
5.37

Orbit quality

Orbit poorly determined (uncertainty code 6).

Observations used
39
Data arc
4.2 years
First observed
10 October 2015
Last observed
22 December 2019
Residual RMS
0.1 ″
Solution · Otto Matic
14 May 2025

Visual & observation

Absolute magnitude (H)
8.88

Discovery & classification

TNO

Sources