Skip to content
Public Universe
Trans-Neptunian object

2026 HA17

Add to an observing list or journal →

(2026 HA17)

Where is it now

Distance from Sun
28.377 AU
True anomaly
335.7°
Distance from Earth
29.285 AU
As of
16 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 — 0.997 AU from the Sun Earth 2026 HA17 — 28.377 AU from the Sun 2026 HA17
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2026 HA17 is 29.285 AU from Earth today (4.1 light-hours).

In the sky

Right ascension
15h 03m 51s
Declination
-11° 00′ 07″
Constellation
Libra
Distance from Earth
29.29 AU
Elongation from the Sun
23.75° — 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
39.155 AU
Eccentricity
0.2897
Inclination
6.27°
Orbital period
245 years
Perihelion
27.812 AU
Aphelion
50.498 AU
Longitude of ascending node
133.8°
Argument of periapsis
117.94°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Tisserand (Jupiter)
5.353

Orbit quality

Orbit poorly determined (uncertainty code 7).

Observations used
49
Data arc
62 days
First observed
19 April 2026
Last observed
20 June 2026
Residual RMS
0.09 ″

Visual & observation

Absolute magnitude (H)
8.25

Discovery & classification

TNO

Sources