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Comet

ATLAS

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C/2025 K1-C (ATLAS)

ATLAS is a comet in the Comet orbit class. Its orbit takes it from 0.33 AU to 113,052.58 AU from the Sun; one orbit takes 13,439,585.3 years. Orbit from the JPL solution of 27 February 2026.

Where is it now

Distance from Sun
5.474 AU
True anomaly
151.4°
Distance from Earth
4.628 AU
As of
25 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 ATLAS — 5.474 AU from the Sun ATLAS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. ATLAS is 4.628 AU from Earth today (38.5 light-minutes).

In the sky

Right ascension
01h 34m 59s
Declination
+46° 40′ 52″
Constellation
Andromeda
Distance from Earth
4.63 AU
Elongation from the Sun
145.33° — well clear of the Sun

Favours the northern hemisphere; low or below the horizon from far south.

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
56,526.459 AU
Eccentricity
1
Inclination
147.85°
Orbital period
13,439,585.3 years
Perihelion
0.334 AU
Aphelion
113,052.583 AU
Longitude of ascending node
97.54°
Argument of periapsis
270.96°
Epoch · J2000
2461026.5
Orbit class · COM
Comet
Earth MOID · 62.6 LD
0.1608 AU
Tisserand (Jupiter)
-0.607

Orbit quality

Observations used
158
Data arc
46 days
First observed
25 November 2025
Last observed
10 January 2026
Residual RMS
0.44 ″
Solution · Davide Farnocchia
27 February 2026

Visual & observation

Absolute magnitude (H)
15
Total magnitude M₁ · K₁ 10.3
15

Discovery & classification

Also known as 2025 K1-C

Named

Sources