C/2012 Y3 (McNaught)
DEPARTED
Type: Periodic
Perihelion date: 25 August 2012
Perihelion distance (q): 1.8
Aphelion distance (Q) : 57.0
Period (years): 159
Eccentricity (e): 0.94
Inclination (i): 73.2
JPL orbit diagram
COBS lightcurve
Rob McNaught discovered a 15th magnitude comet on CCD images taken with the
0.5-m Uppsala Schmidt telescope at Siding Spring on 30 December 2012. The comet
was at perihelion at 1.8 AU in August, when it might have been around 13th
magnitude. This was the 100th comet discovered by the Siding Spring search
programme.
Observations (VEMag = visual equivalent magnitude)
Date
10x10 mag
Error
VEmag
Coma '
06-Jan-13
15.96
0.02
14.4
0.4
21-Jan-13
15.75
0.04
14.4
0.3
28-Jan-13
16.38
0.06
13.7
0.1
04-Feb-13
17.04
0.04
15.8
0.3
24-Feb-13
16.52
0.12
15.5
0.3
21-Mar-13
18.12
0.10
17.9
0.2