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Trans-Neptunian object

2023 FM61

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(2023 FM61)

2023 FM61 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 41.8 AU to 51.67 AU from the Sun; one orbit takes 319.5 years. Orbit from the JPL solution of 3 July 2025.

Where is it now

Distance from Sun
44.063 AU
True anomaly
62.49°
Distance from Earth
44.724 AU
As of
24 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 2023 FM61 — 44.063 AU from the Sun 2023 FM61
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 FM61 is 44.724 AU from Earth today (6.2 light-hours).

In the sky

Right ascension
11h 06m 59s
Declination
+10° 35′ 54″
Constellation
Leo
Distance from Earth
44.72 AU
Elongation from the Sun
48.5° — 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
46.732 AU
Eccentricity
0.1056
Inclination
18.2°
Orbital period
319.5 years
Perihelion
41.799 AU
Aphelion
51.666 AU
Longitude of ascending node
148.54°
Argument of periapsis
312.4°
Epoch · J2000
2460036.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,894.7 LD
40.8424 AU
Tisserand (Jupiter)
5.774

Orbit quality

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

Observations used
4
Data arc
58 days
First observed
21 March 2023
Last observed
18 May 2023
Residual RMS
0.14 ″
Solution · Otto Matic
3 July 2025

Visual & observation

Absolute magnitude (H)
7.32

Discovery & classification

TNO

Sources