C/1953 X1
C/1953 X1 (Pajdusakova)
Not currently visible. Last report 26562 days ago at mag 37.5. Historic peak was mag -1.7. 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
37.5
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
1
Arc unknown
Last observation
26562d ago
Sun, 27 Dec 1953 10:47:59 GMT · COBS consensus
Perihelion
1953-11-23
0.084 au
Peak window
1953-11-20 → 1953-11-26
COBS peak mag -1.7 on 1953-11-23 · perihelion 1953-11-23. Window is those dates ±3 days — not a light-curve fit.
Historic peak
-1.7
COBS / analyzed peak 1953-11-23
Catalog ingest
14h 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
0.084 au
e
0.9990
i
13.50°
Ω
119.00°
ω
89.90°
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
C/1953 X1 (Pajdusakova)
Informal: Pajdusakova
C/1953 X1 · 2026-09-14 18:27:57 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-14 18:27:57 UTC → current
Contributors
Visual Observer · JON · 1 reports · last 26562d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.