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Early warning for newly discovered comets and unconfirmed objects.

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149P

149P/Mueller

CometClass Ecatalogued
Unknown

Not currently visible. Last report 2714 days ago at mag 19.6. 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

19.6

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

22

Arc unknown

Last observation

2714d ago

Sun, 02 Jun 2019 22:33:36 GMT · COBS consensus

Perihelion

2026-12-15

2.790 au

Peak window

2026-12-12 → 2027-03-17

COBS peak mag 18.6 on 2027-03-14 · perihelion 2026-12-15. Window is those dates ±3 days — not a light-curve fit.

Historic peak

18.6

COBS / analyzed peak 2027-03-14

Catalog ingest

20m ago

Venator last wrote this row 2026-11-07 03:30:20 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

2.790 au

e

0.3240

i

34.30°

Ω

144.00°

ω

30.00°

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

  • 149P/Mueller

    149P · 2026-09-13 22:21:22 UTC → current

Discoverers

  • Mueller

    Discoverer · parsed-name · 2026-09-13 22:21:22 UTC → current

Contributors

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