C/1925 G1 (Orkisz)

C/1925 G1 (Orkisz)
	Comet Orkisz photographed by Ferdinand Quénisset on 13 May 1925.
Discovery
Discovered by	Lucien Orkisz
Discovery site	Kraków, Poland
Discovery date	3 April 1925
Designations
Alternative designations	1925 I, 1925c
Orbital characteristics
Epoch	31 March 1925 (JD 2424240.5)
Observation arc	391 days (1.07 years)
Number of; observations	201
Perihelion	1.109 AU
Eccentricity	1.000605
Inclination	100.02°
Longitude of; ascending node	319.11°
Argument of; periapsis	36.181°
Last perihelion	1 April 1925
Physical characteristics
Mean radius	1.531 km (0.951 mi)
Comet total; magnitude (M1)	5.4
Comet nuclear; magnitude (M2)	10.0
Apparent magnitude	6.7; (1925 apparition)

Comet Orkisz, formally designated as C/1925 G1, is a non-periodic comet that was observed between April 1925 and May 1926.⁶ It is the only comet discovered by Polish astronomer, Lucien Orkisz, and the very first comet ever discovered from Poland.⁷

References

Notes

Calculated mean radius using the formula: $\log _{10}\,(\,R\,)\ =\;0.9+\;0.13(\,H\,)$ ⁵
Where $\,H\,$ is the comet's absolute total magnitude (M1)

Citations

F. Quénisset (1925). "Revue des Travaux Astronomiques". L'Astronomie (in French). 40: 228–238.
L. Orkisz; T. Banachiewicz (6 April 1925). E. Strömgren (ed.). "New Comet (1925c) Orkisz". IAU Circular. 63 (1).
"Comet Names and Designations". International Comet Quarterly. Retrieved 4 August 2025.
"C/1925 G1 (Orkisz) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 4 August 2025.
J. A. Fernández; A. Sosa (2012). "Magnitude and size distribution of long-period comets in Earth-crossing or approaching orbits". Monthly Notices of the Royal Astronomical Society. 423 (2): 1674–1690. arXiv:1204.2285. doi:10.1111/j.1365-2966.2012.20989.x.
G. W. Kronk (2007). Cometography: A Catalog of Comets. Vol. 3: 1900–1932. Cambridge University Press. pp. 426–431. ISBN 978-0-521-58506-4.
"Hundred years of the first Polish comet". Kraków, Poland: Jagiellonian University. Retrieved 4 August 2025.

External links

C/1925 G1 at the JPL Small-Body Database

[6] Calculated mean radius using the formula: $\log _{10}\,(\,R\,)\ =\;0.9+\;0.13(\,H\,)$ ⁵
Where $\,H\,$ is the comet's absolute total magnitude (M1)

[Quénisset_1925-1] F. Quénisset (1925). "Revue des Travaux Astronomiques". L'Astronomie (in French). 40: 228–238.

[IAUC_63-2] L. Orkisz; T. Banachiewicz (6 April 1925). E. Strömgren (ed.). "New Comet (1925c) Orkisz". IAU Circular. 63 (1).

[ICQ1-3] "Comet Names and Designations". International Comet Quarterly. Retrieved 4 August 2025.

[jpldata-4] "C/1925 G1 (Orkisz) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 4 August 2025.

[Fernández_2012-5] J. A. Fernández; A. Sosa (2012). "Magnitude and size distribution of long-period comets in Earth-crossing or approaching orbits". Monthly Notices of the Royal Astronomical Society. 423 (2): 1674–1690. arXiv:1204.2285. doi:10.1111/j.1365-2966.2012.20989.x.

[Kronk_2007-7] G. W. Kronk (2007). Cometography: A Catalog of Comets. Vol. 3: 1900–1932. Cambridge University Press. pp. 426–431. ISBN 978-0-521-58506-4.

[Jagiellonian_2025-8] "Hundred years of the first Polish comet". Kraków, Poland: Jagiellonian University. Retrieved 4 August 2025.

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Notes

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External links