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View Full Version here: : Comet Lemmon (C/2012 F6)


Shark Bait
10-01-2013, 09:42 AM
9th January 2013, 0116 hrs EST, Mt Mee Queensland

As with my last post, the only reason that I have uploaded this extremely grainy image is that it may be of some interest to those who are keeping an eye on this comet. My intentions were to observe visually. I ended up taking some images in the hope that I could extract some data and estimate the magnitude of the comet.

From the visual observers point of view, this was the easiest comet to locate out of the three that I hunted down (Lemmon, Linear and Panstarrs). Starry Night V6.3 lists it at apparent magnitude 12.46. It seemed a lot brighter than this to me.

Afocal Photography, 12" SW GoTo Dob, Panasonic DMC-FT1, 17mm EP, 30 Second Exposure.

Starry Night V6.3 Tab Data:
Universal Time: 8/01/2013 15:16:00
Local Time: 9/01/2013 1:16:00 AM
Latitude: 27° 03' 55.0" S
Longitude: 152° 46' 51.8" E
Constellation name: Centaurus, The Centaur, Centauri
Azimuth: 127.09
Altitude: 44.06
Elongation: 83.6° West
RA (JNow): 184.26
Dec (JNow): -44.86
RA (J2000): 184.09
Dec (J2000): -44.79
Distance from observer: 1.289172008 au
Distance from Sun: 1.551651855 au
Orbit size: 498.48 au
Angular size: 0.021 arcseconds
Length of year: 11129.44 years