| Parameter |
Value |
| Designation |
32P/Comas Sola |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-05-01T13:45:17.645760Z |
| Orbit solution date (soln_date, UTC) |
2025-07-07T14:18:22Z |
| Obs used |
2867 |
| NEO |
- |
| M1 |
10.300 |
| K1 |
12.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2019-12-14.0000000 |
| e |
0.55667903 |
| q (au) |
1.994458 |
| a (au) |
4.498903 |
| i (deg) |
9.944091 |
| Ω (om, deg) |
57.665791 |
| ω (w, deg) |
53.300686 |
| M (ma, deg) |
194.682189 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.509 + 5.372\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.509 |
| n |
5.372 |
| gf |
0.800 |
| gb |
-0.881 |
| k |
0.999 |
| δ90 |
1.000 |
| Parameter |
Symbol |
Range |
Description |
| Absolute magnitude at 1 AU from Sun and Earth |
H0 |
-5 to 20 |
Intrinsic brightness of the comet |
| Photometric slope parameter |
n |
2 to 6 |
Rate of brightness change with heliocentric distance |
| Forward scattering asymmetry factor |
gf |
0.8 to 1 |
Degree of forward scattering |
| Backward scattering asymmetry factor |
gb |
-1 to -0.5 |
Degree of backward scattering |
| Partitioning coefficient |
k |
0.8 to 1 |
Ratio between forward/backward scattering contributions |
| Dust-to-gas brightness ratio |
δ90 |
1 to 10 |
Relative contribution of dust scattering to gas emission |
Reference: EPSC-DPS2025-160
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
16:14:58.40 |
-23:55:54.2 |
HIP 79643 |
10.62 |
| 2026-06-01 12:00 |
16:14:38.96 |
-23:55:27.6 |
HIP 79643 |
12.07 |
| 2026-06-02 00:00 |
16:14:19.56 |
-23:55:00.8 |
HIP 79557 |
9.46 |
| 2026-06-02 12:00 |
16:14:00.21 |
-23:54:33.8 |
HIP 79557 |
8.13 |
| 2026-06-03 00:00 |
16:13:40.91 |
-23:54:06.6 |
HIP 79557 |
9.06 |
| 2026-06-03 12:00 |
16:13:21.67 |
-23:53:39.2 |
HIP 79557 |
11.72 |
| 2026-06-04 00:00 |
16:13:02.48 |
-23:53:11.6 |
HIP 79392 |
12.20 |
| 2026-06-04 12:00 |
16:12:43.35 |
-23:52:43.7 |
HIP 79392 |
8.06 |
| 2026-06-05 00:00 |
16:12:24.28 |
-23:52:15.7 |
HIP 79392 |
4.47 |
| 2026-06-05 12:00 |
16:12:05.27 |
-23:51:47.5 |
HIP 79392 |
3.65 |
| 2026-06-06 00:00 |
16:11:46.33 |
-23:51:19.2 |
HIP 79392 |
6.69 |
| 2026-06-06 12:00 |
16:11:27.47 |
-23:50:50.7 |
HIP 79392 |
10.67 |
| 2026-06-07 00:00 |
16:11:08.67 |
-23:50:22.0 |
HIP 79392 |
14.84 |
| 2026-06-07 12:00 |
16:10:49.95 |
-23:49:53.2 |
HIP 79392 |
19.06 |
| 2026-06-08 00:00 |
16:10:31.31 |
-23:49:24.3 |
HIP 79392 |
23.29 |
| 2026-06-08 12:00 |
16:10:12.74 |
-23:48:55.2 |
HIP 79098 |
21.81 |
| 2026-06-09 00:00 |
16:09:54.27 |
-23:48:26.0 |
HIP 79098 |
17.72 |
| 2026-06-09 12:00 |
16:09:35.87 |
-23:47:56.7 |
HIP 79098 |
13.75 |
| 2026-06-10 00:00 |
16:09:17.57 |
-23:47:27.3 |
HIP 79098 |
10.01 |
| 2026-06-10 12:00 |
16:08:59.35 |
-23:46:57.9 |
HIP 79098 |
6.85 |
| 2026-06-11 00:00 |
16:08:41.24 |
-23:46:28.3 |
HIP 79098 |
5.38 |
| 2026-06-11 12:00 |
16:08:23.21 |
-23:45:58.7 |
HIP 79054 |
5.83 |
| 2026-06-12 00:00 |
16:08:05.29 |
-23:45:28.9 |
HIP 79054 |
5.68 |
| 2026-06-12 12:00 |
16:07:47.47 |
-23:44:59.2 |
HIP 79054 |
8.02 |
| 2026-06-13 00:00 |
16:07:29.75 |
-23:44:29.4 |
HIP 79054 |
11.39 |
| 2026-06-13 12:00 |
16:07:12.14 |
-23:43:59.5 |
HIP 78996 |
13.66 |
| 2026-06-14 00:00 |
16:06:54.64 |
-23:43:29.7 |
HIP 78877 |
13.15 |
| 2026-06-14 12:00 |
16:06:37.26 |
-23:42:59.8 |
HIP 78877 |
9.69 |
| 2026-06-15 00:00 |
16:06:19.98 |
-23:42:29.9 |
HIP 78877 |
6.87 |
| 2026-06-15 12:00 |
16:06:02.83 |
-23:42:00.0 |
HIP 78877 |
5.68 |
| 2026-06-16 00:00 |
16:05:45.79 |
-23:41:30.1 |
HIP 78809 |
6.25 |
| 2026-06-16 12:00 |
16:05:28.88 |
-23:41:00.3 |
HIP 78809 |
2.39 |
| 2026-06-17 00:00 |
16:05:12.09 |
-23:40:30.4 |
HIP 78809 |
1.66 |
| 2026-06-17 12:00 |
16:04:55.43 |
-23:40:00.7 |
HIP 78809 |
5.43 |
| 2026-06-18 00:00 |
16:04:38.90 |
-23:39:30.9 |
HIP 78809 |
9.24 |
| 2026-06-18 12:00 |
16:04:22.50 |
-23:39:01.2 |
HIP 78809 |
13.02 |
| 2026-06-19 00:00 |
16:04:06.24 |
-23:38:31.6 |
HIP 78809 |
16.78 |
| 2026-06-19 12:00 |
16:03:50.11 |
-23:38:02.1 |
HIP 78809 |
20.50 |
| 2026-06-20 00:00 |
16:03:34.11 |
-23:37:32.6 |
HIP 78809 |
24.20 |
| 2026-06-20 12:00 |
16:03:18.26 |
-23:37:03.2 |
HIP 78586 |
27.25 |
| 2026-06-21 00:00 |
16:03:02.55 |
-23:36:33.9 |
HIP 78586 |
26.00 |
| 2026-06-21 12:00 |
16:02:46.98 |
-23:36:04.8 |
HIP 78586 |
25.21 |
| 2026-06-22 00:00 |
16:02:31.56 |
-23:35:35.7 |
HIP 78586 |
24.93 |