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C/1992 U1

C/1992 U1 (Shoemaker)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 11812 days ago at mag 37.4. 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

37.4

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

50

Arc unknown

Last observation

11812d ago

Wed, 06 Jul 1994 06:14:23 GMT · COBS consensus

Perihelion

1993-04-04

2.290 au

Peak window

1992-12-14 → 1993-04-07

COBS peak mag 16.5 on 1992-12-17 · perihelion 1993-04-04. Window is those dates ±3 days — not a light-curve fit.

Historic peak

16.5

COBS / analyzed peak 1992-12-17

Catalog ingest

15h 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

q

2.290 au

e

0.9990

i

66.40°

Ω

55.50°

ω

54.80°

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 U1 (Shoemaker)

    Informal: Shoemaker

    C/1992 U1 · 2026-09-14 18:27:57 UTC → current

Discoverers

  • Shoemaker

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

Contributors

  • Akimasa Nakamura

    Visual Observer · NAK01 · 12 reports · last 12284d ago

  • Georg Comello

    Visual Observer · COM · 9 reports · last 12364d ago

  • Reinder J. Bouma

    Visual Observer · BOU · 6 reports · last 12347d ago

  • Robert J. Modic

    Visual Observer · MOD · 6 reports · last 12306d ago

  • James V. Scotti

    Visual Observer · SCO01 · 5 reports · last 11812d ago

  • Alan Hale

    Visual Observer · HAL · 4 reports · last 12288d ago

  • Stephane Garro

    Visual Observer · GAR02 · 4 reports · last 12286d ago

  • Herbert Raab

    Visual Observer · RAA01 · 3 reports · last 12184d ago

  • Henk Feijth

    Visual Observer · FEI · 2 reports · last 12366d ago

  • Herman Mikuz

    Visual Observer · MIK · 2 reports · last 12375d ago

  • Maura Tombelli

    Visual Observer · TOM01 · 1 reports · last 12358d ago

  • Richard A. Keen

    Visual Observer · KEE · 1 reports · last 12373d ago

  • Werner Hasubick

    Visual Observer · HAS02 · 1 reports · last 12379d ago

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