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Early warning for newly discovered comets and unconfirmed objects.

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107P

107P/Wilson-Harrington

CometClass Ecatalogued
Southern hemisphere

Visible to modest telescopes (mag 9.1). Last report 59 days ago.

Active comet in COBS

JSONCSV

Right ascension

18h 50m 46s

J2000

Declination

−20° 26′ 07″

J2000

Estimated magnitude

9.1

Binoculars · COBS consensus

Confidence

33

Class E · priority 88

Observations

65

80.00 d arc

Last observation

59d ago

Tue, 08 Sep 2026 19:57:21 GMT · COBS consensus

Perihelion

2022-08-24

0.967 au

Peak window

2022-07-31 → 2022-08-27

COBS peak mag 7.2 on 2022-08-03 · perihelion 2022-08-24. Window is those dates ±3 days — not a light-curve fit.

Historic peak

7.2

COBS / analyzed peak 2022-08-03

Catalog ingest

3m ago

Venator last wrote this row 2026-11-07 03:00:09 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

0.967 au

e

0.6320

i

2.80°

Ω

267.00°

ω

95.40°

a

2.620 au

MOID

—

H

—

H0 / n

9.0 / 4

NEO score

—

PHA score

—

RMS

—

Elongation

58°

Reporting sources

  • COBS comet list

    ok

    Comet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).

  • COBS orbits

    ok

    Osculating elements and photometric parameters (H0, n) for active comets.

Name history

  • 107P/Wilson-Harrington

    107P · 2026-09-08 02:09:56 UTC → current

Discoverers

Contributors

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