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Trans-Neptunian object

2026 HA18

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(2026 HA18)

Where is it now

Distance from Sun
37.796 AU
True anomaly
299.03°
Distance from Earth
38.708 AU
As of
18 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 2026 HA18 — 37.796 AU from the Sun 2026 HA18
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2026 HA18 is 38.708 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
14h 10m 52s
Declination
-31° 39′ 59″
Constellation
Centaurus
Distance from Earth
38.71 AU
Elongation from the Sun
22.98° — near the Sun — look low at dusk or dawn

Favours the southern hemisphere; low or below the horizon from far north.

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
42.593 AU
Eccentricity
0.1834
Inclination
22.09°
Orbital period
278 years
Perihelion
34.78 AU
Aphelion
50.406 AU
Longitude of ascending node
274.15°
Argument of periapsis
6.53°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Tisserand (Jupiter)
5.334

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 8).

Observations used
11
Data arc
35 days
First observed
21 April 2026
Last observed
26 May 2026
Residual RMS
0.14 ″

Visual & observation

Absolute magnitude (H)
7.59

Discovery & classification

TNO

Sources