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Trans-Neptunian object

2006 HZ122

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(2006 HZ122)

2006 HZ122 is a trans-Neptunian object in the Trans-Neptunian object orbit class. Its orbit takes it from 38.28 AU to 55.43 AU from the Sun; one orbit takes 320.7 years. Orbit from the JPL solution of 14 April 2021.

Where is it now

Distance from Sun
38.457 AU
True anomaly
345.88°
Distance from Earth
38.998 AU
As of
24 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 — 0.994 AU from the Sun Earth 2006 HZ122 — 38.457 AU from the Sun 2006 HZ122
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2006 HZ122 is 38.998 AU from Earth today (5.4 light-hours).

In the sky

Right ascension
17h 46m 49s
Declination
-09° 38′ 42″
Constellation
Ophiuchus
Distance from Earth
39.01 AU
Elongation from the Sun
55.66° — 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
46.855 AU
Eccentricity
0.1831
Inclination
30.14°
Orbital period
320.7 years
Perihelion
38.278 AU
Aphelion
55.433 AU
Longitude of ascending node
242.56°
Argument of periapsis
42.82°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Earth MOID · 14,524.6 LD
37.3218 AU
Tisserand (Jupiter)
5.213

Orbit quality

Orbit reasonably well determined (uncertainty code 5).

Observations used
12
Data arc
8.17 years
First observed
27 April 2006
Last observed
28 June 2014
Residual RMS
0.19 ″
Solution · Otto Matic
14 April 2021

Visual & observation

Absolute magnitude (H)
7.6

Discovery & classification

TNO

Sources