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Early warning for newly discovered comets and unconfirmed objects.

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C/1992 J1

C/1992 J1 (Spacewatch)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 11197 days ago at mag 36.2. Historic peak was mag 17.7. 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

36.2

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

50

Arc unknown

Last observation

11197d ago

Sun, 21 Jan 1996 02:52:48 GMT · COBS consensus

Perihelion

1993-08-12

3.050 au

Peak window

1993-08-09 → 1993-09-09

COBS peak mag 17.7 on 1993-09-06 · perihelion 1993-08-12. Window is those dates ±3 days — not a light-curve fit.

Historic peak

17.7

COBS / analyzed peak 1993-09-06

Catalog ingest

10h ago

Venator last wrote this row 2026-09-16 13:20:18 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

3.050 au

e

0.9980

i

124.00°

Ω

203.00°

ω

83.40°

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

  • C/1992 J1 (Spacewatch)

    Informal: Spacewatch

    C/1992 J1 · 2026-09-14 18:27:58 UTC → current

Discoverers

  • Spacewatch

    Discoverer · parsed-name · 2026-09-14 18:27:58 UTC → current

Contributors

  • Akimasa Nakamura

    Visual Observer · NAK01 · 17 reports · last 11585d ago

  • Alan Hale

    Visual Observer · HAL · 9 reports · last 11938d ago

  • James V. Scotti

    Visual Observer · SCO01 · 7 reports · last 12226d ago

  • Herbert Raab

    Visual Observer · RAA01 · 5 reports · last 11932d ago

  • Robert J. Modic

    Visual Observer · MOD · 5 reports · last 11966d ago

  • Syuichi Nakano

    Visual Observer · NAK07 · 4 reports · last 12167d ago

  • Kazuyuki Ito

    Visual Observer · ITO02 · 2 reports · last 11609d ago

  • Carl Hergenrother

    Visual Observer · HER02 · 1 reports · last 11197d ago

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