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Trans-Neptunian object

2025 MZ396

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(2025 MZ396)

Where is it now

Distance from Sun
42.3 AU
True anomaly
98.75°
Distance from Earth
42.919 AU
As of
19 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 2025 MZ396 — 42.3 AU from the Sun 2025 MZ396
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. 2025 MZ396 is 42.919 AU from Earth today (5.9 light-hours).

In the sky

Right ascension
17h 06m 34s
Declination
-17° 38′ 07″
Constellation
Ophiuchus
Distance from Earth
42.92 AU
Elongation from the Sun
50.98° — 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
42.855 AU
Eccentricity
0.2114
Inclination
23.45°
Orbital period
280.6 years
Perihelion
33.796 AU
Aphelion
51.915 AU
Longitude of ascending node
90.6°
Argument of periapsis
67.85°
Epoch · J2000
2461200.5
Orbit class · TNO
Trans-Neptunian object
Tisserand (Jupiter)
5.268

Orbit quality

Orbit very uncertain — the object may be effectively lost (uncertainty code 9).

Observations used
10
Data arc
27 days
First observed
21 June 2025
Last observed
18 July 2025
Residual RMS
0.12 ″

Visual & observation

Absolute magnitude (H)
6.39

Discovery & classification

TNO

Sources