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Venator

Early warning for newly discovered comets and unconfirmed objects.

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303P

303P/NEAT

CometClass Ecatalogued
Unknown

Not currently visible. Last report 390 days ago at mag 20.1. 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

20.1

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

16

Arc unknown

Last observation

390d ago

Sat, 23 Aug 2025 02:27:00 GMT · COBS consensus

Perihelion

2026-02-19

2.470 au

Peak window

2025-08-18 → 2026-02-22

COBS peak mag 19.6 on 2025-08-21 · perihelion 2026-02-19. Window is those dates ±3 days — not a light-curve fit.

Historic peak

19.6

COBS / analyzed peak 2025-08-21

Catalog ingest

7m ago

Venator last wrote this row 2026-09-16 23:00:05 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

2.470 au

e

0.5100

i

7.02°

Ω

348.00°

ω

357.00°

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

  • 303P/NEAT

    303P · 2026-09-14 18:27:56 UTC → current

Discoverers

  • NEAT

    Discoverer · parsed-name · 2026-09-14 18:27:56 UTC → current

Contributors

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