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C/1970 B1

C/1970 B1 (Daido-Fujikawa)

CometClass Ecatalogued
Unknown

Not currently visible. Last report 20677 days ago at mag 33.3. Historic peak was mag -6.3. Typical backyard telescopes will not show it. HST, JWST, or an 8–10 m class telescope might recover it with a good ephemeris.

Active comet in COBS

Right ascension

J2000

Declination

J2000

Estimated magnitude

33.3

Professional survey · COBS consensus

Confidence

33

Class E · priority 60

Observations

4

Arc unknown

Last observation

20677d ago

Fri, 06 Feb 1970 06:14:23 GMT · COBS consensus

Perihelion

1970-01-31

0.077 au

Peak window

1970-01-28 → 1970-02-03

COBS peak mag -6.3 on 1970-01-31 · perihelion 1970-01-31. Window is those dates ±3 days — not a light-curve fit.

Historic peak

-6.3

COBS / analyzed peak 1970-01-31

Catalog ingest

13h 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

0.077 au

e

1.0000

i

99.80°

Ω

27.90°

ω

266.00°

a

MOID

H

H0 / n

NEO score

PHA score

RMS

Elongation

Reporting sources

  • COBS comet list

    down

    Comet Observation Database magnitudes and perihelion data for the full COBS list (active and inactive).

Name history

  • C/1970 B1 (Daido-Fujikawa)

    Informal: Daido-Fujikawa

    C/1970 B1 · 2026-09-14 18:27:57 UTC → current

Discoverers

  • Daido-Fujikawa

    Discoverer · parsed-name · 2026-09-14 18:27:57 UTC → current

Contributors

Pips are observation weight on this object (log of report count). Hover for catalog-wide weight.