259P/Garradd
Sign in to save259P/Garradd is a Jupiter-family comet and active asteroid with an orbital period of 4.5 years. It was discovered in images obtained on 2 September 2008 as part of the Siding Spring Survey by Gordon J. Garradd.
Wikidata facts
- Parent body
- Sun
- Orbital period
- 1645.248329498213
- Image
- Comet 259P Garradd - Psjabe59df2 hr.jpg
Show 14 more facts
- discoverer or inventor
- Gordon J. Garradd
- time of discovery or invention
- 2008-09-02
- provisional designation
- 259P/2008 R1
- absolute magnitude
- 13.7
- orbital eccentricity
- 0.34152970302507
- semi-major axis of an orbit
- 2.727440935461766
- periapsis
- 1.79593884275509
- apoapsis
- 3.658943028168442
- orbital inclination
- 15.89853730255651
- longitude of ascending node
- 51.9696957134415
- argument of periapsis
- 256.5909059738796
- mean anomaly
- 206.9965918832171
- time of periapsis
- 2456317.746115588
- epoch
- February 26, 2011
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Encyclopedic overview
4 sectionsContents
- Physical characteristics
- Orbit
- References
- External links
259P/Garradd is a Jupiter-family comet and active asteroid with an orbital period of 4.5 years. It was discovered in images obtained on 2 September 2008 as part of the Siding Spring Survey by Gordon J. Garradd.
== Physical characteristics == The comet upon discovery had an apparent magnitude of 18.5 and a coma about 15 arcseconds across. The comet dimmed by 1.5 magnitudes until mid November 2008. The spectrum of the comet during that period indicated a lack of gaseous emission lines and the mass loss rate was estimated to be less than 1.5 kg/s. The comet was observed in 2011-12, when it was inactive, with the observations indicating an effective radius of about 0.3 kilometers assuming a geometric albedo of 0.05.
Excerpted from Wikipedia’s “259P/Garradd” article, available under the CC BY-SA 4.0 licence.