alcyone software


Alcyone Ephemeris Small Body Data Files

Home Contact Imprint

Comet 12P/Pons-Brooks


Named after Jean-Louis Pons, who discovered the comet on July 12,181 and William Robert Brooks who identified the comet in 1883.

If the download doesn't start automatically, click here.
When the download succeeded click 'Open' to install the data file.

ClassificationHalley-type Comet, NEO

Osculating Orbital Elements
Epoch2435000,5
Semi major axis17,1212 AU
Period [Julian yrs]70,845 Julian years
Inclination74,177 °
Eccentricity0,9548
Lon. of ascending node255,891 °
Argument of perihelion199,028 °
Passage of perihelion1954-May-22.880850
Aphelion distance33,4688 AU
Mean anomaly1,602 °

Physical Data
Total magnitude (M1)5
Total magnitude slope (k1)15
Nuclear magnitude (M2)11
Nuclear magnitude slope (k2)10

Discovery Circumstances
DiscovererJean-Louis Pons
Discovered1812-07-12

Data File
Data File Name12P_Pons_Brooks.aed
Data File Date2006-12-22
Data File Size2714 kB
Covered Period1800,00 - 2100,00