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C/1939 B1 (Kozik–Peltier)

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For other comets discovered by Leslie C. Peltier, see Comet Peltier.
C/1939 B1 (Kozik–Peltier)
Comet Kozik–Peltier photographed by Ferdinand Quénisset on 8 February 1939.[1]
Discovery[2][3]
Discovered byStefan M. Kozik
Leslie C. Peltier
Discovery siteTashkent, Uzbek SSR
Delphos, Ohio, USA
Discovery date17–20 January 1939
Designations
  • 1939 I, 1939a[4]
  • Comet Cosik–Peltier
Orbital characteristics[5]
Observation arc30 days
Number of
observations		53
Aphelion~315 AU
Perihelion0.716 AU
Semi-major axis~160 AU
Eccentricity0.99545
Orbital period~1,980 years
Inclination63.526°
289.61°
Argument of
periapsis		169.02°
Mean anomaly0.0006°
Last perihelion6 February 1939
TJupiter0.500
Earth MOID0.259 AU
Jupiter MOID2.588 AU
Physical characteristics[6]
Comet total
magnitude (M1)		9.6
5.7
(1939 apparition)

Comet Kozik–Peltier, formally designated as C/1939 B1, is a non-periodic comet that became barely visible to the naked eye on February 1939. It is the second comet discovered by Stefan M. Kozik and the sixth overall by Leslie C. Peltier.

Observational history

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Discovery

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Stefan M. Kozik first discovered the comet on the night of 17 January 1939, where at the time it was a diffuse 8th-magnitude object within the constellation Cygnus.[a] Sergey Belyavsky later confirmed the existence of Kozik's comet on 19 January, and he later sent an official announcement two days later,[3] but not before Leslie C. Peltier independently discovered it on 20 January 1939.[2] Yrjö Väisälä made additional observations on the same day as Peltier.[3]

Follow-up observations

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Several observatories later made follow-up observations of the comet throughout the remainder of January 1939.[7] It made its closest approach to Earth at a distance of 0.551 AU (82.4 million km) on 11 February 1939.[6]

It was last seen within the constellation Pictor on 21 April 1939,[b] when Harry Edwin Wood obtained a 15-minute exposure photograph of the comet from the Union Observatory.[8]

See also

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References

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Notes

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  1. ^ Reported initial position upon discovery was: α = 21h 07.1m , δ = 28° 20′[6]
  2. ^ Positions upon final observation was: α = 5h 22.7m , δ = –47° 07′[6]

Citations

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  1. ^ F. Quénisset (1939). "Comète Cosik-Peltier (1939 a)". L'Astronomie (in French). 53: 55–57. Bibcode:1939LAstr..53...54Q.
  2. ^ a b L. C. Peltier (20 January 1939). E. Strömgren (ed.). "New Comet Peltier". IAU Circular. 736 (1).
  3. ^ a b c S. M. Kozik; S. I. Belyavsky; Y. Väisälä (21 January 1939). E. Strömgren (ed.). "Comet Cosik–Peltier". IAU Circular. 737 (1).
  4. ^ "Comet Names and Designations". International Comet Quarterly. Retrieved 16 July 2025.
  5. ^ "C/1939 B1 (Kozik–Peltier) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 16 July 2025.
  6. ^ a b c d G. W. Kronk (2009). Cometography: A Catalog of Comets. Vol. 4: 1933–1959. Cambridge: Cambridge University Press. pp. 84–88. ISBN 978-0-521-58507-1.
  7. ^ F. S. Hogg (1939). "Notes and Queries: A New Comet Cosik–Peltier". Journal of the Royal Astronomical Society of Canada. 33: 74. Bibcode:1939JRASC..33...72H.
  8. ^ E. L. Johnson; H. E. Wood (1940). "Photographic Observations of Comet 1939a (Kozik–Peltier)". Circular of the Union Observatory Johannesburg. 102: 29–30. Bibcode:1940CiUO..102...29.
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