C/1993 Q1
Not currently visible. Last report 11765 days ago at mag 35.3. Historic peak was mag 9.6. Typical backyard telescopes will not show it. HST, JWST, or an 8–10 m class telescope might recover it with a good ephemeris.
Right ascension
—
J2000
Declination
—
J2000
Estimated magnitude
35.3
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
356
Arc unknown
Last observation
11765d ago
Sat, 02 Jul 1994 04:48:00 GMT · COBS consensus
Perihelion
1994-03-23
0.980 au
Peak window
1994-03-20 → 1994-04-09
COBS peak mag 9.6 on 1994-04-06 · perihelion 1994-03-23. Window is those dates ±3 days — not a light-curve fit.
Historic peak
9.6
COBS / analyzed peak 1994-04-06
Catalog ingest
11h ago
Venator last wrote this row 2026-09-16 13:20:17 UTC
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.
q
0.980 au
e
1.0000
i
106.00°
Ω
195.00°
ω
261.00°
a
—
MOID
—
H
—
H0 / n
—
NEO score
—
PHA score
—
RMS
—
Elongation
—
COBS comet list
okComet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).
C/1993 Q1 (Mueller)
Informal: Mueller
C/1993 Q1 · 2026-09-14 18:27:55 UTC → current
Discoverer · parsed-name · 2026-09-14 18:27:55 UTC → current
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1–40 of 62
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.