ATLAS
C/2020 M3 (ATLAS)
Where is it now
- Distance from Sun
- 15.848 AU
- True anomaly
- 152.33°
- As of
- 17 September 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.
In the sky
- Right ascension
- 13h 17m 47s
- Declination
- +12° 14′ 01″
- Constellation
- Virgo
- Distance from Earth
- 16.75 AU
- Elongation from the Sun
- 25.54° — near the Sun — look low at dusk or dawn
Visible from both hemispheres.
From your location
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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
- 26.817 AU
- Eccentricity
- 0.9527
- Inclination
- 23.47°
- Orbital period
- 138.9 years
- Perihelion
- 1.268 AU
- Aphelion
- 52.366 AU
- Longitude of ascending node
- 71.25°
- Argument of periapsis
- 328.45°
- Epoch · J2000
- 2459179.5
- Orbit class · HTC
- Halley-type comet
- Earth MOID · 127.4 LD
- 0.3274 AU
- Tisserand (Jupiter)
- 1.46
Orbit quality
Orbit reasonably well determined (uncertainty code 3).
- Observations used
- 2,344
- Data arc
- 348 days
- First observed
- 27 June 2020
- Last observed
- 10 June 2021
- Residual RMS
- 0.47 ″
- Solution · Otto Matic
- 23 April 2022
Visual & observation
- Absolute magnitude (H)
- 14.6
- Total magnitude M₁ · K₁ 6
- 14.6
Discovery & classification
Also known as 2020 M3
Sources
- orbital elements: JPL SBDB