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C/1946 C1

C/1946 C1 (Timmers)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 29186 days ago at mag 39.2. Historic peak was mag 7.8. 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

39.2

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

70

Arc unknown

Last observation

29187d ago

Sun, 20 Oct 1946 16:04:48 GMT · COBS consensus

Perihelion

1946-02-11

1.770 au

Peak window

1946-01-22 → 1946-02-14

COBS peak mag 7.8 on 1946-01-25 · perihelion 1946-02-11. Window is those dates ±3 days — not a light-curve fit.

Historic peak

7.8

COBS / analyzed peak 1946-01-25

Catalog ingest

2d ago

Venator last wrote this row 2026-09-14 20:00:18 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.

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

1.770 au

e

0.9990

i

72.00°

Ω

129.00°

ω

55.00°

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

  • C/1946 C1 (Timmers)

    Informal: Timmers

    C/1946 C1 · 2026-09-14 18:27:57 UTC → current

Discoverers

  • Timmers

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

Contributors

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