376P
376P/LONEOS
Not currently visible. Last report 7802 days ago at mag 26.5. Historic peak was mag 18.6. 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
26.5
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
4
Arc unknown
Last observation
7802d ago
Sat, 07 May 2005 15:36:00 GMT · COBS consensus
Perihelion
2033-06-29
2.790 au
Peak window
2033-06-26 → 2033-07-02
COBS peak mag 18.6 on 2033-06-29 · perihelion 2033-06-29. Window is those dates ±3 days — not a light-curve fit.
Historic peak
18.6
COBS / analyzed peak 2033-06-29
Catalog ingest
13h ago
Venator last wrote this row 2026-09-16 13:20:18 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
0.5140
i
1.17°
Ω
313.00°
ω
285.00°
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
376P/LONEOS
376P · 2026-09-14 18:27:59 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-14 18:27:59 UTC → current
Contributors
CCD Observer · NAK01 · 3 reports · last 7806d ago
CCD Observer · TSU02 · 1 reports · last 7802d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.