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Trans-Neptunian object

2023 FO61

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(2023 FO61)

Where is it now

Distance from Sun
42.892 AU
True anomaly
305.42°
Distance from Earth
43.58 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 2023 FO61 — 42.892 AU from the Sun 2023 FO61
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2023 FO61 is 43.58 AU from Earth today (6.0 light-hours).

In the sky

Right ascension
10h 58m 11s
Declination
+05° 52′ 16″
Constellation
Leo
Distance from Earth
43.57 AU
Elongation from the Sun
46.63° — 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
45.88 AU
Eccentricity
0.1013
Inclination
5.17°
Orbital period
310.8 years
Perihelion
41.234 AU
Aphelion
50.526 AU
Longitude of ascending node
170.02°
Argument of periapsis
47.07°
Epoch · J2000
2460030.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,656.3 LD
40.2297 AU
Tisserand (Jupiter)
5.998

Orbit quality

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

Observations used
4
Data arc
32 days
First observed
21 March 2023
Last observed
22 April 2023
Residual RMS
0.1 ″
Solution · Otto Matic
3 July 2025

Visual & observation

Absolute magnitude (H)
6.88

Discovery & classification

TNO

Sources