C/1957 U1
C/1957 U1 (Latyshev-Wild-Burnham)
Not currently visible. Last report 25165 days ago at mag 38.6. Historic peak was mag 5.0. 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
38.6
Professional survey · COBS consensus
Confidence
33
Class E · priority 60
Observations
11
Arc unknown
Last observation
25165d ago
Wed, 23 Oct 1957 16:19:11 GMT · COBS consensus
Perihelion
1957-12-05
—
Peak window
1957-10-18 → 1957-12-08
COBS peak mag 5.0 on 1957-10-21 · perihelion 1957-12-05. Window is those dates ±3 days — not a light-curve fit.
Historic peak
5.0
COBS / analyzed peak 1957-10-21
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.
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
—
e
—
i
—
Ω
—
ω
—
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/1957 U1 (Latyshev-Wild-Burnham)
Informal: Latyshev-Wild-Burnham
C/1957 U1 · 2026-09-14 18:27:57 UTC → current
Discoverers
Discoverer · parsed-name · 2026-09-14 18:27:57 UTC → current
Contributors
Visual Observer · LAT · 11 reports · last 25165d ago
Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.