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Early warning for newly discovered comets and unconfirmed objects.

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90P

90P/Gehrels

CometClass Ecatalogued
Unknown

Not currently visible. Last report 3137 days ago at mag 27.5. Historic peak was mag 17.8. 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

27.5

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

31

Arc unknown

Last observation

3137d ago

Tue, 13 Feb 2018 21:50:24 GMT · COBS consensus

Perihelion

2032-05-19

2.970 au

Peak window

2017-11-10 → 2032-05-22

COBS peak mag 17.8 on 2017-11-13 · perihelion 2032-05-19. Window is those dates ±3 days — not a light-curve fit.

Historic peak

17.8

COBS / analyzed peak 2017-11-13

Catalog ingest

12h ago

Venator last wrote this row 2026-09-16 13:20:16 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

2.970 au

e

0.5100

i

9.63°

Ω

13.10°

ω

29.20°

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

  • 90P/Gehrels

    90P · 2026-09-14 18:27:54 UTC → current

Discoverers

  • Gehrels

    Discoverer · parsed-name · 2026-09-14 18:27:54 UTC → current

Contributors

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