C/2024 M1
Not currently visible. Last report 588 days ago at mag 25.0. Historic peak was mag 13.7. Typical backyard telescopes will not show it. HST, JWST, or an 8–10 m class telescope might recover it with a good ephemeris.
Right ascension
—
J2000
Declination
—
J2000
Estimated magnitude
25.0
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
134
Arc unknown
Last observation
588d ago
Sat, 29 Mar 2025 00:14:24 GMT · COBS consensus
Perihelion
2024-11-19
1.700 au
Peak window
2024-11-16 → 2024-12-08
COBS peak mag 13.7 on 2024-12-05 · perihelion 2024-11-19. Window is those dates ±3 days — not a light-curve fit.
Historic peak
13.7
COBS / analyzed peak 2024-12-05
Catalog ingest
14h ago
Venator last wrote this row 2026-11-06 14:20:24 UTC
Brightness over time (V mag)
Gold = reported observations. Steel dashed family = ensemble (nominal / outburst / fade / disruption).
Tail length
Converted to degrees from COBS (d / arcmin / arcsec). Empty until analysis has pulled the archive.
No tail measures stored yet for this object.
Ensemble is a first-pass H0/n photometric model plus observed samples — not a trained ML forecast yet. The background analyzer walks the catalog one object at a time so COBS is not flooded. Disruption track rises after perihelion to stand in for solar-wind stripping.
q
1.700 au
e
0.9430
i
73.70°
Ω
76.20°
ω
346.00°
a
—
MOID
—
H
—
H0 / n
—
NEO score
—
PHA score
—
RMS
—
Elongation
—
COBS comet list
okComet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).
C/2024 M1 (ATLAS)
Informal: ATLAS
C/2024 M1 · 2026-09-14 18:28:02 UTC → current
Discoverer · parsed-name · 2026-09-14 18:28:02 UTC → current
CCD Observer · FRI02 · 25 reports · last 589d ago
CCD Observer · PEA · 16 reports · last 690d ago
CCD Observer · DEK01 · 15 reports · last 610d ago
CCD Observer · LEH02 · 15 reports · last 599d ago
CCD Observer · YOS02 · 14 reports · last 656d ago
CCD Observer · HIL04 · 12 reports · last 631d ago
CCD Observer · CAR06 · 6 reports · last 679d ago
Visual Observer · HAR11 · 5 reports · last 656d ago
CCD Observer · SHU · 3 reports · last 588d ago
CCD Observer · VIO · 2 reports · last 686d ago
CCD Observer · HEG · 2 reports · last 687d ago
CCD Observer · PAR03 · 2 reports · last 655d ago
CCD Observer · YUS · 2 reports · last 706d ago
CCD Observer · YAM03 · 2 reports · last 706d ago
CCD Observer · BAL09 · 1 reports · last 736d ago
Visual Observer · DIJ · 1 reports · last 683d ago
CCD Observer · BRY04 · 1 reports · last 612d ago
CCD Observer · BUI01 · 1 reports · last 708d ago
CCD Observer · PAP04 · 1 reports · last 704d ago
CCD Observer · CHA03 · 1 reports · last 700d ago
Visual Observer · GON05 · 1 reports · last 680d ago
CCD Observer · MAS01 · 1 reports · last 853d ago
CCD Observer · PAL05 · 1 reports · last 673d ago
CCD Observer · PAU02 · 1 reports · last 700d ago
CCD Observer · BAD01 · 1 reports · last 735d ago
Visual Observer · KAR02 · 1 reports · last 703d ago
CCD Observer · KUT · 1 reports · last 707d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.