354P
354P/LINEAR
Not currently visible. Last report 6047 days ago at mag 18.9. 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
18.9
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
9
Arc unknown
Last observation
6047d ago
Sat, 17 Apr 2010 19:40:48 GMT · COBS consensus
Perihelion
2027-04-02
2.000 au
Peak window
2024-01-24 → 2027-04-05
COBS peak mag 18.8 on 2024-01-27 · perihelion 2027-04-02. Window is those dates ±3 days — not a light-curve fit.
Historic peak
18.8
COBS / analyzed peak 2024-01-27
Catalog ingest
12m ago
Venator last wrote this row 2026-11-07 04:30:19 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
2.000 au
e
0.1240
i
5.25°
Ω
320.00°
ω
133.00°
a
—
MOID
—
H
—
H0 / n
—
NEO score
—
PHA score
—
RMS
—
Elongation
—
Reporting sources
COBS comet list
okComet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).
Name history
354P/LINEAR
354P · 2026-09-13 22:21:23 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-13 22:21:23 UTC → current
Contributors
CCD Observer · HAE · 7 reports · last 6047d ago
Visual Observer · HAE · 2 reports · last 6084d ago
CCD Observer · SHU · 1 reports · last 6131d ago
CCD Observer · YUS · 1 reports · last 6143d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.