241P
Not currently visible. Last report 1859 days ago at mag 27.2. Historic peak was mag 18.2. 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
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J2000
Declination
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J2000
Estimated magnitude
27.2
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
36
Arc unknown
Last observation
1859d ago
Tue, 05 Oct 2021 02:52:48 GMT · COBS consensus
Perihelion
2021-07-25
1.930 au
Peak window
2021-07-22 → 2021-11-20
COBS peak mag 18.2 on 2021-11-17 · perihelion 2021-07-25. Window is those dates ±3 days — not a light-curve fit.
Historic peak
18.2
COBS / analyzed peak 2021-11-17
Catalog ingest
14h ago
Venator last wrote this row 2026-11-06 14:20:18 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
1.930 au
e
0.6090
i
21.10°
Ω
305.00°
ω
112.00°
a
—
MOID
—
H
—
H0 / n
—
NEO score
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PHA score
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RMS
—
Elongation
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COBS comet list
okComet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).
241P/LINEAR
241P · 2026-09-14 18:27:54 UTC → current
Discoverer · parsed-name · 2026-09-14 18:27:54 UTC → current
CCD Observer · NAK01 · 9 reports · last 9748d ago
CCD Observer · NOV01 · 8 reports · last 5707d ago
CCD Observer · YOS04 · 7 reports · last 9765d ago
Seiichi Yoshida and KenIchi Kadota
CCD Observer · YOS05 · 7 reports · last 9765d ago
Visual Observer · GIL01 · 4 reports · last 10128d ago
Visual Observer · COM · 3 reports · last 10129d ago
Visual Observer · HAE · 2 reports · last 5726d ago
CCD Observer · PAP04 · 1 reports · last 1859d ago
CCD Observer · HIL04 · 1 reports · last 1883d ago
CCD Observer · SHU · 1 reports · last 5760d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.