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C/2024 T5

C/2024 T5 (ATLAS)

CometClass Ecatalogued
Southern hemisphere

Visible to modest telescopes (mag 13.4). Last report 0 days ago.

Active comet in COBS

Right ascension

17h 48m 28s

J2000

Declination

−20° 35′ 59″

J2000

Estimated magnitude

13.4

Small telescope · COBS consensus

Confidence

33

Class E · priority 76

Observations

192

80.00 d arc

Last observation

9h ago

Fri, 06 Nov 2026 18:32:59 GMT · COBS consensus

Perihelion

2027-05-06

3.840 au

Peak window

2027-01-03 → 2027-05-09

COBS peak mag 13.1 on 2027-01-06 · perihelion 2027-05-06. Window is those dates ±3 days — not a light-curve fit.

Historic peak

13.1

COBS / analyzed peak 2027-01-06

Catalog ingest

15m ago

Venator last wrote this row 2026-11-07 03:00:09 UTC

Light curve

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.

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.

Orbital elements

q

3.840 au

e

1.0000

i

52.40°

Ω

101.00°

ω

352.00°

a

-1670.000 au

MOID

—

H

—

H0 / n

9.1 / 1

NEO score

—

PHA score

—

RMS

—

Elongation

43°

Reporting sources

  • COBS comet list

    ok

    Comet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).

  • COBS orbits

    ok

    Osculating elements and photometric parameters (H0, n) for active comets.

Name history

  • C/2024 T5 (ATLAS)

    Informal: ATLAS

    C/2024 T5 · 2026-09-08 02:09:56 UTC → current

Discoverers

  • ATLAS

    Discoverer · parsed-name · 2026-09-08 17:27:23 UTC → current

Contributors

Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.