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Trans-Neptunian object

2015 FR561

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(2015 FR561)

Where is it now

Distance from Sun
46.825 AU
True anomaly
228.42°
Distance from Earth
47.626 AU
As of
22 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 — 0.995 AU from the Sun Earth 2015 FR561 — 46.825 AU from the Sun 2015 FR561
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2015 FR561 is 47.626 AU from Earth today (6.6 light-hours).

In the sky

Right ascension
11h 34m 13s
Declination
+01° 47′ 19″
Constellation
Leo
Distance from Earth
47.62 AU
Elongation from the Sun
36.85° — 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
46.068 AU
Eccentricity
0.6493
Inclination
174.35°
Orbital period
312.7 years
Perihelion
16.154 AU
Aphelion
75.982 AU
Longitude of ascending node
2.11°
Argument of periapsis
321.1°
Epoch · J2000
2457104.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 5,900.9 LD
15.1628 AU
Tisserand (Jupiter)
-4.391

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
15
Data arc
11 days
First observed
18 March 2015
Last observed
29 March 2015
Residual RMS
0.14 ″
Solution · Otto Matic
2 July 2025

Visual & observation

Absolute magnitude (H)
7.36

Discovery & classification

TNO

Sources