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Venator

Early warning for newly discovered comets and unconfirmed objects.

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329P

329P/LINEAR-Catalina

CometClass Ecatalogued
Unknown

Not currently visible. Last report 3911 days ago at mag 21.8. Historic peak was mag 16.5. 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

JSONCSV

Right ascension

—

J2000

Declination

—

J2000

Estimated magnitude

21.8

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

12

Arc unknown

Last observation

3911d ago

Fri, 01 Jan 2016 19:55:12 GMT · COBS consensus

Perihelion

2027-09-25

1.660 au

Peak window

2027-09-22 → 2027-11-22

COBS peak mag 16.5 on 2027-11-19 · perihelion 2027-09-25. Window is those dates ±3 days — not a light-curve fit.

Historic peak

16.5

COBS / analyzed peak 2027-11-19

Catalog ingest

1m ago

Venator last wrote this row 2026-09-17 01:55:25 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.

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.

Orbital elements

q

1.660 au

e

0.6790

i

21.70°

Ω

87.60°

ω

344.00°

a

—

MOID

—

H

—

H0 / n

—

NEO score

—

PHA score

—

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

  • 329P/LINEAR-Catalina

    329P · 2026-09-14 18:27:57 UTC → current

Discoverers

  • Catalina

    Discoverer · parsed-name · 2026-09-15 18:25:25 UTC → current

  • LINEAR

    Discoverer · parsed-name · 2026-09-15 18:25:25 UTC → current

  • LINEAR-Catalina

    Discoverer · parsed-name · 2026-09-15 18:25:25 UTC → current

  • LINEAR-Catalina

    Discoverer · parsed-name · 2026-09-14 18:27:57 UTC → 2026-09-15 18:25:25 UTC

Contributors

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