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C/2000 CT54

C/2000 CT54 (LINEAR)

CometClass Ecatalogued

Unknown

Not currently visible. Last report 8737 days ago at mag 27.5. Historic peak was mag 15.6. Typical backyard telescopes will not show it. HST, JWST, or an 8–10 m class telescope might recover it with a good ephemeris.

Active comet in COBS

JSON CSV

Right ascension

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J2000

Declination

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J2000

Estimated magnitude

27.5

Professional survey · COBS consensus

Confidence

Class E · priority 60

Observations

Arc unknown

Last observation

8737d ago

Thu, 05 Dec 2002 21:36:00 GMT · COBS consensus

Perihelion

2001-06-22

3.170 au

Peak window

2001-06-19 → 2001-07-24

COBS peak mag 15.6 on 2001-07-21 · perihelion 2001-06-22. Window is those dates ±3 days — not a light-curve fit.

Historic peak

15.6

COBS / analyzed peak 2001-07-21

Catalog ingest

14h ago

Venator last wrote this row 2026-11-06 14:20:20 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

3.170 au

0.9990

48.90°

18.50°

273.00°

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MOID

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H0 / n

—

NEO score

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PHA score

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RMS

—

Elongation

—

Reporting sources

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

Name history

C/2000 CT54 (LINEAR)
Informal: LINEAR
C/2000 CT54 · 2026-09-14 18:27:56 UTC → current

Discoverers

LINEAR
Discoverer · parsed-name · 2026-09-14 18:27:56 UTC → current

Contributors

Akimasa Nakamura
CCD Observer · NAK01 · 8 reports · last 8767d ago
Reinder J. Bouma
Visual Observer · BOU · 5 reports · last 9276d ago
John Broughton
CCD Observer · BRO08 · 4 reports · last 9075d ago
Michael Mattiazzo
Visual Observer · MAT08 · 3 reports · last 9239d ago
Andrew Pearce
Visual Observer · PEA · 1 reports · last 9690d ago
Ramon Naves
CCD Observer · NAV01 · 1 reports · last 8737d ago
Takaaki Oribe
CCD Observer · ORI · 1 reports · last 9694d ago

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