343P
343P/NEAT-LONEOS
Not currently visible. Last report 3523 days ago at mag 26.7. Historic peak was mag 18.1. 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
26.7
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
7
Arc unknown
Last observation
3523d ago
Mon, 23 Jan 2017 20:09:35 GMT · COBS consensus
Perihelion
2029-11-05
2.270 au
Peak window
2029-10-24 → 2029-11-08
COBS peak mag 18.1 on 2029-10-27 · perihelion 2029-11-05. Window is those dates ±3 days — not a light-curve fit.
Historic peak
18.1
COBS / analyzed peak 2029-10-27
Catalog ingest
11h 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
2.270 au
e
0.5840
i
5.60°
Ω
257.00°
ω
138.00°
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
343P/NEAT-LONEOS
343P · 2026-09-14 18:27:58 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-16 13:20:18 UTC → current
Discoverer · parsed-name · 2026-09-16 13:20:18 UTC → current
Discoverer · parsed-name · 2026-09-16 13:20:18 UTC → current
Discoverer · parsed-name · 2026-09-14 18:27:58 UTC → 2026-09-16 13:20:18 UTC
Contributors
CCD Observer · HIL04 · 6 reports · last 3523d ago
CCD Observer · TSU02 · 1 reports · last 3606d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.