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Early warning for newly discovered comets and unconfirmed objects.

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C/1946 P1

C/1946 P1 (Jones)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 28964 days ago at mag 39.4. Historic peak was mag 7.0. 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

39.4

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

30

Arc unknown

Last observation

28964d ago

Sat, 31 May 1947 00:14:24 GMT · COBS consensus

Perihelion

1946-09-14

1.130 au

Peak window

1946-09-11 → 1946-09-17

COBS peak mag 7.0 on 1946-09-14 · perihelion 1946-09-14. Window is those dates ±3 days — not a light-curve fit.

Historic peak

7.0

COBS / analyzed peak 1946-09-14

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.

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

1.130 au

e

1.0000

i

56.20°

Ω

240.00°

ω

320.00°

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 P1 (Jones)

    Informal: Jones

    C/1946 P1 · 2026-09-14 18:27:57 UTC → current

Discoverers

  • Jones

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

Contributors

  • Max Beyer

    Visual Observer · BEY · 13 reports · last 28964d ago

  • Albert F. Jones

    Visual Observer · JON · 12 reports · last 29199d ago

  • D. J. Martynoff

    Visual Observer · MAR23 · 4 reports · last 28972d ago

  • B. N. Kadomskyi

    Visual Observer · KAD01 · 1 reports · last 28980d ago

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