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Venator

Early warning for newly discovered comets and unconfirmed objects.

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10P

10P/Tempel

CometClass Ecatalogued
Southern hemisphere

Visible to modest telescopes (mag 9.1). Last report 1 days ago.

Active comet in COBS

JSONCSV

Right ascension

22h 26m 48s

J2000

Declination

−35° 13′ 26″

J2000

Estimated magnitude

9.1

Binoculars · COBS consensus

Confidence

33

Class E · priority 88

Observations

42

80.00 d arc

Last observation

31h ago

Tue, 15 Sep 2026 14:15:22 GMT · COBS consensus

Perihelion

2026-08-02

1.420 au

Peak window

2026-07-30 → 2026-08-06

COBS peak mag 8.4 on 2026-08-03 · perihelion 2026-08-02. Window is those dates ±3 days — not a light-curve fit.

Historic peak

8.4

COBS / analyzed peak 2026-08-03

Catalog ingest

2m ago

Venator last wrote this row 2026-09-16 21:25:45 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

1.420 au

e

0.5370

i

12.00°

Ω

118.00°

ω

195.00°

a

3.060 au

MOID

—

H

—

H0 / n

9.9 / 1

NEO score

—

PHA score

—

RMS

—

Elongation

143°

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

  • 10P/Tempel

    10P · 2026-09-08 02:09:56 UTC → current

Discoverers

  • Tempel

    Discoverer · parsed-name · 2026-09-08 17:27:23 UTC → current

Contributors

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