C/2012 OP (SidingSpring) MPC194129
C/2012 OP (SidingSpring) MPC194129
Visibility unknown. No recent magnitude. Large facilities may still recover it if an ephemeris exists.
Right ascension
06h 05m 22s
J2000
Declination
+31° 11′ 52″
J2000
Estimated magnitude
—
Unknown
Confidence
41
Class D · priority 50
Observations
0
Arc unknown
Last observation
Not in feed
Feed does not publish an observer timestamp. Catalog ingested 53d ago.
Perihelion
2012-12-05
3.601 au
Peak window
2012-12-05
Using perihelion as a stand-in for peak. Dust comets often brighten a few days later.
Historic peak
—
No peak date yet
Catalog ingest
53d ago
Venator last wrote this row 2026-09-14 20:00:56 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
3.601 au
e
0.9955
i
114.64°
Ω
267.57°
ω
351.48°
a
808.920 au
MOID
—
H
1.0
H0 / n
1.0 / 0
NEO score
—
PHA score
—
RMS
—
Elongation
81°
Reporting sources
MPC AllCometEls
okFull MPC comet orbit catalog. Stored even when fainter than the UI default of mag 22.
Name history
C/2012 OP (SidingSpring) MPC194129
C/2012 OP (SidingSpring) MPC194129 · 2026-09-14 18:28:49 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-14 18:28:49 UTC → current
Contributors
- No recent COBS visual or CCD reports linked yet.
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.