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Trans-Neptunian object

2016 AX401

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(2016 AX401)

Where is it now

Distance from Sun
41.379 AU
True anomaly
269.28°
Distance from Earth
41.935 AU
As of
17 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 2016 AX401 — 41.379 AU from the Sun 2016 AX401
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2016 AX401 is 41.935 AU from Earth today (5.8 light-hours).

In the sky

Right ascension
09h 50m 27s
Declination
-00° 01′ 58″
Constellation
Sextans
Distance from Earth
41.92 AU
Elongation from the Sun
56.41° — 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
41.547 AU
Eccentricity
0.0703
Inclination
13.38°
Orbital period
267.8 years
Perihelion
38.627 AU
Aphelion
44.467 AU
Longitude of ascending node
217.31°
Argument of periapsis
21.53°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,640.4 LD
37.6193 AU
Tisserand (Jupiter)
5.61

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
20
Data arc
11.03 years
First observed
30 December 2014
Last observed
11 January 2026
Residual RMS
0.17 ″
Solution · Otto Matic
5 June 2026

Visual & observation

Absolute magnitude (H)
7.03

Discovery & classification

TNO

Sources