229P
Not currently visible. Last report 687 days ago at mag 22.4. Historic peak was mag 18.5. 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
22.4
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
12
Arc unknown
Last observation
687d ago
Tue, 29 Oct 2024 21:21:36 GMT · COBS consensus
Perihelion
2025-03-06
2.440 au
Peak window
2024-09-11 → 2025-03-09
COBS peak mag 18.5 on 2024-09-14 · perihelion 2025-03-06. Window is those dates ±3 days — not a light-curve fit.
Historic peak
18.5
COBS / analyzed peak 2024-09-14
Catalog ingest
13h ago
Venator last wrote this row 2026-09-16 13:20:16 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.
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.
q
2.440 au
e
0.3800
i
26.20°
Ω
158.00°
ω
224.00°
a
—
MOID
—
H
—
H0 / n
—
NEO score
—
PHA score
—
RMS
—
Elongation
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COBS comet list
okComet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).
229P/Gibbs
229P · 2026-09-14 18:27:53 UTC → current
Discoverer · parsed-name · 2026-09-14 18:27:53 UTC → current
CCD Observer · HIL04 · 9 reports · last 687d ago
CCD Observer · MAI01 · 2 reports · last 767d ago
CCD Observer · PAP04 · 1 reports · last 699d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.