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Trans-Neptunian object

2021 LZ56

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(2021 LZ56)

Where is it now

Distance from Sun
42.144 AU
True anomaly
237.46°
Distance from Earth
42.853 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 2021 LZ56 — 42.144 AU from the Sun 2021 LZ56
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2021 LZ56 is 42.853 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
16h 28m 09s
Declination
-05° 58′ 40″
Constellation
Ophiuchus
Distance from Earth
42.86 AU
Elongation from the Sun
43.83° — 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
40.098 AU
Eccentricity
0.1128
Inclination
16.27°
Orbital period
253.9 years
Perihelion
35.577 AU
Aphelion
44.619 AU
Longitude of ascending node
143.9°
Argument of periapsis
225.3°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Tisserand (Jupiter)
5.425

Orbit quality

Orbit reasonably well determined (uncertainty code 4).

Observations used
40
First observed
2020-??-??
Last observed
19 June 2023
Residual RMS
0.28 ″

Visual & observation

Absolute magnitude (H)
8.71

Discovery & classification

TNO

Sources