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Trans-Neptunian object

2003 QF91

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(2003 QF91)

Where is it now

Distance from Sun
42.514 AU
True anomaly
71.41°
Distance from Earth
41.541 AU
As of
19 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 2003 QF91 — 42.514 AU from the Sun 2003 QF91
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2003 QF91 is 41.541 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
00h 53m 11s
Declination
+03° 57′ 09″
Constellation
Pisces
Distance from Earth
41.54 AU
Elongation from the Sun
167.03° — near opposition — up most of the night

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
42.994 AU
Eccentricity
0.0322
Inclination
2.18°
Orbital period
281.9 years
Perihelion
41.611 AU
Aphelion
44.377 AU
Longitude of ascending node
60.1°
Argument of periapsis
242.54°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,798.6 LD
40.5955 AU
Tisserand (Jupiter)
5.863

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
19
Data arc
18.11 years
First observed
23 August 2003
Last observed
3 October 2021
Residual RMS
0.19 ″
Solution · Otto Matic
15 October 2021

Visual & observation

Absolute magnitude (H)
7.39

Discovery & classification

TNO

Sources