Skip to content
Public Universe
Trans-Neptunian object

2025 WQ21

Add to an observing list or journal →

(2025 WQ21)

Where is it now

Distance from Sun
6.809 AU
True anomaly
51.26°
Distance from Earth
6.413 AU
As of
17 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 — 0.996 AU from the Sun Earth 2025 WQ21 — 6.809 AU from the Sun 2025 WQ21
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 WQ21 is 6.413 AU from Earth today (53.3 light-minutes).

In the sky

Right ascension
06h 19m 49s
Declination
+16° 02′ 22″
Constellation
Orion
Distance from Earth
6.4 AU
Elongation from the Sun
110.1° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
40.955 AU
Eccentricity
0.8626
Inclination
19.07°
Orbital period
262.1 years
Perihelion
5.629 AU
Aphelion
76.28 AU
Longitude of ascending node
107.28°
Argument of periapsis
287.19°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 1,827.0 LD
4.6946 AU
Tisserand (Jupiter)
2.81

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
24
Data arc
74 days
First observed
28 September 2025
Last observed
11 December 2025
Residual RMS
0.55 ″
Solution · Otto Matic
11 December 2025

Visual & observation

Absolute magnitude (H)
14.93

Discovery & classification

TNO

Sources