C/2008 T2 (Cardinal)

C/2008 T2 (Cardinal)

Discovery [1]
Discovered by	Rob D. Cardinal
Discovery site	Rothney Astrophysical Observatory
Discovery date	1 October 2008
Orbital characteristics [2]
Epoch	8 February 2009 (JD 2454870.5
Perihelion	1.202 AU
Eccentricity	1.00011
Inclination	56.304°
Longitude of ascending node	309.68°
Argument of periapsis	215.87°
Last perihelion	13 June 2009
TJupiter	0.754
Earth MOID	0.318 AU
Jupiter MOID	1.527 AU
Physical characteristics [3]
Mean radius	1.21 km (0.75 mi) [a]
Comet total magnitude (M1)	6.3
Comet nuclear magnitude (M2)	13.2±0.8
Apparent magnitude	8.5–9.0 (2009 apparition)

C/2008 T2 (Cardinal), is a non-periodic comet. It was discovered by Rob. D. Cardinal from the University of Calgary. ^{[1] [4] [5]} It was visible as a telescopic and binocular object during 2009. ^{[5] [6]} It passed near the Perseus star clusters NGC 1528 on 15 March and NGC 1545 on 17 March 2009. ^[7] It also passed near the Auriga star clusters M38 on 14 April, M36 on 17 April, and M37 in on 21 April 2009, and passed near Comet Lulin on 12 May 2009, for observers on Earth. ^{[5] [6] [8]} It peaked in brightness in June–July 2009 at 8.5-9^m. ^{[5] [7]}

References

Notes

1. Calculated mean radius using the formula: ${\displaystyle \log _{10}\,(\,R\,)\ =\;0.9+\;0.13(\,H\,)}$ ^[3]
   Where ${\displaystyle \,H\,}$ is the comet's absolute total magnitude (M1)

Citations

1. B. M. Shaw (14 October 2008). "Canadian Comet Discovery: C/2008 T2 (Cardinal)". Royal Astronomical Society of Canada. Retrieved 25 December 2008.
2. "C/2008 T2 (Cardinal) – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory . Retrieved 2 January 2009.
3. 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. doi: 10.1111/j.1365-2966.2012.20989.x .
4. "Comet discovered". University of Calgary. 14 October 2008. Archived from the original on 3 February 2009. Retrieved 2 January 2009.
5. Yoshida, Seiichi (14 December 2008). "C/2008 T2 (Cardinal)". aerith.net. Retrieved 25 December 2008.
6. Dyer, Alan (2009). "The Top 10 Celestial Sights of 2009 (pg. 14)". In Dickinson, Terence (ed.). SkyNews: The Canadian Magazine of Astronomy & Stargazing. Vol. XIV, Issue 5 (January/February 2009 ed.). Yarker, Ontario: SkyNews Inc. p. 38.
7. Dyer, Alan (2009). "The Planets at Their Best (pg. 23)". In Dickinson, Terence (ed.). SkyNews: The Canadian Magazine of Astronomy and Stargazing. Vol. XIV, Issue 6 (March/April 2009 ed.). Yarker, Ontario: SkyNews Inc. p. 38.
8. RASC, Oberver's Handbook; Cooke, Roberta; Bishop, Roy (2009). "Star Chart: Celestial Calendar (pg. 20)". In Dickinson, Terence (ed.). SkyNews: The Canadian Magazine of Astronomy & Stargazing. Vol. XIV, Issue 6 (March/April 2009 ed.). Yarker, Ontario: SkyNews Inc. p. 38.

External links

• C/2008 T2 at the JPL Small-Body Database
  • Close approach  · Discovery  · Ephemeris  · Orbit viewer  · Orbit parameters  · Physical parameters