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Comet

ATLAS

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C/2025 R1 (ATLAS)

ATLAS is a comet in the Comet orbit class. Its orbit takes it from 1.98 AU to 329.41 AU from the Sun; one orbit takes 2,132.9 years. Orbit from the JPL solution of 6 July 2026.

Where is it now

Distance from Sun
4.192 AU
True anomaly
93.67°
Distance from Earth
5.055 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 ATLAS — 4.192 AU from the Sun ATLAS
Seen from above the ecliptic, north up, to scale. Grid: Earth's orbit in blue. ATLAS is 5.055 AU from Earth today (42.0 light-minutes).

In the sky

Right ascension
15h 47m 14s
Declination
-13° 01′ 17″
Constellation
Libra
Distance from Earth
5.07 AU
Elongation from the Sun
26.18° — 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
165.694 AU
Eccentricity
0.9881
Inclination
110.03°
Orbital period
2,132.9 years
Perihelion
1.975 AU
Aphelion
329.412 AU
Longitude of ascending node
60.4°
Argument of periapsis
77.55°
Epoch · J2000
2460980.5
Orbit class · COM
Comet
Earth MOID · 596.1 LD
1.5318 AU
Tisserand (Jupiter)
-0.564

Orbit quality

Observations used
386
Data arc
288 days
First observed
3 September 2025
Last observed
18 June 2026
Residual RMS
0.53 ″
Solution · Otto Matic
6 July 2026

Visual & observation

Absolute magnitude (H)
14.2
Total magnitude M₁ · K₁ 9
14.2

Discovery & classification

Also known as 2025 R1

Named

Sources