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Trans-Neptunian object

2015 FQ490

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(2015 FQ490)

2015 FQ490 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 32.5 AU to 62.38 AU from the Sun; one orbit takes 326.7 years. Orbit from the JPL solution of 23 January 2025.

Where is it now

Distance from Sun
41.14 AU
True anomaly
277.07°
Distance from Earth
42.061 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 FQ490 — 41.14 AU from the Sun 2015 FQ490
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 FQ490 is 42.061 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
15h 21m 46s
Declination
-03° 39′ 44″
Constellation
Serpens
Distance from Earth
42.06 AU
Elongation from the Sun
21.73° — near the Sun — look low at dusk or dawn

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
47.438 AU
Eccentricity
0.3149
Inclination
14.77°
Orbital period
326.7 years
Perihelion
32.5 AU
Aphelion
62.376 AU
Longitude of ascending node
146.8°
Argument of periapsis
165.79°
Epoch · J2000
2456951.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 12,254.0 LD
31.4872 AU
Tisserand (Jupiter)
5.652

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
28
Data arc
369 days
First observed
25 March 2014
Last observed
29 March 2015
Residual RMS
0.1 ″
Solution · Otto Matic
23 January 2025

Visual & observation

Absolute magnitude (H)
7.37

Discovery & classification

TNO

Sources