65P/Gunn (0065P)
Type: Periodic
Perihelion date: 16 June 2025
Perihelion distance (q): 2.9
Aphelion distance (Q) : 4.9
Period (years): 7.7
Eccentricity (e): 0.25
Inclination (i): 9.2
JPL orbit diagram
COBS lightcurve
Atlas
The comet was discovered on 11 October 1970 by Professor James E. Gunn of
Princeton University using the 122-cm Schmidt telescope at the Palomar Observatory.
It had a low brightness of magnitude 16 plus which improves to 12 under favourable
conditions. The comet orbits the Sun inside the main asteroid belt between the orbits
of the planets Mars and Jupiter. On 4 February 1970 the comet passed 0.015 AU
(2,200,000 km) from Ceres.
Observations (VEMag = visual equivalent magnitude)
Date
10x10 mag
Error
VEmag
Coma '
24-Dec-15
17.56
0.08
16.7
0.2
04-Feb-16
16.86
0.02
16.2
0.2
05-Mar-16
16.43
0.02
15.5
0.3
29-Mar-16
16.35
0.01
15.5
0.4
12-Apr-16
16.41
0.01
15.6
0.5
01-May-16
16.45
0.03
15.1
0.6
28-May-16
16.73
0.03
15.7
0.5
07-Jun-16
16.81
0.02
15.6
0.3
26-Feb-17
16.19
0.05
13.1
0.5
05-Mar-17
16.47
0.04
15.3
0.5
29-Mar-17
16.37
0.02
14.6
0.5
21-Apr-17
16.07
0.02
14.5
0.7
03-May-17
15.82
0.01
14.1
0.4
18-May-17
15.50
0.01
13.2
0.7
28-May-17
15.52
0.01
13.8
0.7
28-Jun-17
15.89
0.01
13.7
0.9
11-Jul-17
15.40
0.02
13.0
0.7
20-Jul-17
16.02
0.02
13.2
0.8
24-Aug-17
16.62
0.04
15.1
0.3
08-Jul-18
17.51
0.01
16.3
0.4
15-Jul-18
17.65
0.14
16.4
0.4
06-Aug-18
17.43
0.07
16.6
0.3
02-Sep-18
17.33
0.06
16.5
0.4
01-Oct-18
17.48
0.04
16.7
0.3
28-Oct-18
18.18
0.21
17.5
0.3
20-Feb-23
18.6
0.4
28-Feb-23
18.8
0.4
12-Mar-23
18.7
0.4
26-Mar-23
19.1
0.4
09-Apr-23
18.5
0.4
08-Feb-24
17.9
0.4
15-Feb-24
17.7
0.4
06-Mar-24
17.7
0.4
14-Mar-24
17.3
0.4
01-Apr-24
17.0
0.4
02-May-24
17.3
0.4
11-May-24
17.3
0.4
25-May-24
17.5
0.4
01-Jun-24
17.2
0.4
09-Jun-24
17.3
0.4
23-Jun-24
17.6
0.4
01-Jul-24
17.4
0.4
08-Jul-24
17.4
0.4