C/1905 X1 (Giacobini)
 Giacobini's Comet photographed by Edward E. Barnard on 29 December 1905[1] | |
| Discovery | |
|---|---|
| Discovered by | Michel Giacobini |
| Discovery site | Nice, France |
| Discovery date | 7 December 1905 |
| Designations | |
| 1905c[2] 1906 I | |
| Orbital characteristics[3] | |
| Epoch | 13 January 1906 (JD 2417223.5) |
| Observation arc | 81 days |
| Number of observations | 41 |
| Perihelion | 0.216 AU |
| Eccentricity | ~1.000 |
| Inclination | 43.65° |
| 93.37° | |
| Argument of periapsis | 199.22° |
| Last perihelion | 22 December 1906 |
| Earth MOID | 0.413 AU |
| Jupiter MOID | 0.253 AU |
| Physical characteristics[4] | |
| Comet nuclear magnitude (M2) | 8.3 |
| 0.7 (1906 apparition) | |
Giacobini's Comet, also known as C/1905 X1, is a bright parabolic comet that became visible to the naked eye in January 1906. It is one of 12 comets discovered by French astronomer, Michel Giacobini.
Observational history
While observing at the Nice Observatory in France, Michel Giacobini discovered the comet as an 8th-magnitude object within the constellation Boötes.[a] Throughout December 1905, the comet continued to brighten as it slowly approached both the Earth and the Sun, allowing follow-up observations to be conducted.
References
Notes
Citations
- ^ E. E. Barnard (1906). "Photographic Observations of Giacobini's Comet (1905 c)". Astrophysical Journal. 24: 255–258. Bibcode:1906ApJ....24..255B. doi:10.1086/141388.
- ^ "Comet Names and Designations". International Comet Quarterly. Retrieved 5 January 2025.
- ^ "C/1905 X1 – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 5 January 2025.
- ^ a b G. W. Kronk (2007). Cometography: A Catalog of Comets. Vol. 3: 1900–1932. Cambridge University Press. pp. 71–75. ISBN 978-0-521-58506-4.
External links
- C/1905 X1 at the JPL Small-Body Database
