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Trans-Neptunian object

2018 FX73

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(2018 FX73)

Where is it now

Distance from Sun
46.337 AU
True anomaly
163.02°
Distance from Earth
47.266 AU
As of
20 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 2018 FX73 — 46.337 AU from the Sun 2018 FX73
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2018 FX73 is 47.266 AU from Earth today (6.6 light-hours).

In the sky

Right ascension
12h 28m 54s
Declination
+00° 03′ 04″
Constellation
Virgo
Distance from Earth
47.26 AU
Elongation from the Sun
21.87° — 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
44.034 AU
Eccentricity
0.055
Inclination
3.17°
Orbital period
292.2 years
Perihelion
41.614 AU
Aphelion
46.455 AU
Longitude of ascending node
116.38°
Argument of periapsis
266.78°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 15,807.5 LD
40.6182 AU
Tisserand (Jupiter)
5.919

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
19
Data arc
366 days
First observed
10 March 2018
Last observed
11 March 2019
Residual RMS
0.09 ″
Solution · Otto Matic
12 October 2024

Visual & observation

Absolute magnitude (H)
6.93

Discovery & classification

TNO

Sources