166P
166P/NEAT
Not currently visible. Last report 7985 days ago at mag 24.8. Historic peak was mag 19.2. 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
—
J2000
Declination
—
J2000
Estimated magnitude
24.8
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
10
Arc unknown
Last observation
7985d ago
Sat, 06 Nov 2004 16:04:47 GMT · COBS consensus
Perihelion
2002-05-22
8.580 au
Peak window
2002-05-19 → 2002-10-27
COBS peak mag 19.2 on 2002-10-24 · perihelion 2002-05-22. Window is those dates ±3 days — not a light-curve fit.
Historic peak
19.2
COBS / analyzed peak 2002-10-24
Catalog ingest
16h ago
Venator last wrote this row 2026-09-16 13:20:16 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
8.580 au
e
0.3810
i
15.40°
Ω
64.40°
ω
322.00°
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
166P/NEAT
166P · 2026-09-14 18:27:52 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-14 18:27:52 UTC → current
Contributors
CCD Observer · NAK01 · 10 reports · last 7985d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.