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Venator

Early warning for newly discovered comets and unconfirmed objects.

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73P-B

73P-B/Schwassmann-Wachmann

CometClass Ecatalogued
Unknown

Visibility unknown. No recent magnitude. Large facilities may still recover it if an ephemeris exists.

JSONCSV

Right ascension

—

J2000

Declination

—

J2000

Estimated magnitude

—

Unknown · COBS consensus

Confidence

33

Class E · priority 56

Observations

631

Arc unknown

Last observation

3328d ago

Wed, 27 Sep 2017 05:02:24 GMT · COBS consensus

Perihelion

1995-09-22

0.933 au

Peak window

1995-09-19 → 1995-09-25

COBS peak mag 4.0 on 1995-09-22 · perihelion 1995-09-22. Window is those dates ±3 days — not a light-curve fit.

Historic peak

4.0

COBS / analyzed peak 1995-09-22

Catalog ingest

13h ago

Venator last wrote this row 2026-11-06 14:20:17 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

0.933 au

e

0.6950

i

11.40°

Ω

69.90°

ω

199.00°

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

  • 73P-B/Schwassmann-Wachmann

    73P-B · 2026-09-14 18:27:52 UTC → current

Discoverers

Contributors

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