| Parameter |
Value |
| Designation |
C/2012 T6 (Kowalski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2012-08-26T09:14:54.784320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:24Z |
| Obs used |
142 |
| NEO |
- |
| M1 |
15.700 |
| K1 |
7.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-11-03.0000000 |
| e |
0.87633751 |
| q (au) |
1.775087 |
| a (au) |
14.354288 |
| i (deg) |
33.275501 |
| Ω (om, deg) |
186.220461 |
| ω (w, deg) |
198.098653 |
| M (ma, deg) |
1.243507 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.029 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.029 |
| n |
6.000 |
| gf |
0.999 |
| gb |
-0.536 |
| k |
0.800 |
| δ90 |
10.000 |
| 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) |
| 2026-03-26 00:00 |
12:40:25.98 |
-01:37:25.2 |
HIP 61726 |
19.80 |
| 2026-03-26 12:00 |
12:40:21.29 |
-01:36:50.7 |
HIP 61726 |
18.54 |
| 2026-03-27 00:00 |
12:40:16.60 |
-01:36:16.3 |
HIP 61726 |
17.27 |
| 2026-03-27 12:00 |
12:40:11.91 |
-01:35:41.8 |
HIP 61726 |
16.02 |
| 2026-03-28 00:00 |
12:40:07.21 |
-01:35:07.4 |
HIP 61726 |
14.77 |
| 2026-03-28 12:00 |
12:40:02.51 |
-01:34:33.0 |
HIP 61726 |
13.54 |
| 2026-03-29 00:00 |
12:39:57.80 |
-01:33:58.6 |
HIP 61726 |
12.32 |
| 2026-03-29 12:00 |
12:39:53.10 |
-01:33:24.3 |
HIP 61726 |
11.11 |
| 2026-03-30 00:00 |
12:39:48.39 |
-01:32:50.0 |
HIP 61726 |
9.94 |
| 2026-03-30 12:00 |
12:39:43.69 |
-01:32:15.7 |
HIP 61726 |
8.80 |
| 2026-03-31 00:00 |
12:39:38.98 |
-01:31:41.4 |
HIP 61726 |
7.71 |
| 2026-03-31 12:00 |
12:39:34.27 |
-01:31:07.1 |
HIP 61726 |
6.71 |
| 2026-04-01 00:00 |
12:39:29.57 |
-01:30:32.9 |
HIP 61726 |
5.82 |
| 2026-04-01 12:00 |
12:39:24.86 |
-01:29:58.8 |
HIP 61726 |
5.12 |
| 2026-04-02 00:00 |
12:39:20.15 |
-01:29:24.7 |
HIP 61726 |
4.69 |
| 2026-04-02 12:00 |
12:39:15.45 |
-01:28:50.6 |
HIP 61726 |
4.60 |
| 2026-04-03 00:00 |
12:39:10.75 |
-01:28:16.5 |
HIP 61726 |
4.86 |
| 2026-04-03 12:00 |
12:39:06.05 |
-01:27:42.6 |
HIP 61726 |
5.44 |
| 2026-04-04 00:00 |
12:39:01.35 |
-01:27:08.6 |
HIP 61726 |
6.24 |
| 2026-04-04 12:00 |
12:38:56.66 |
-01:26:34.7 |
HIP 61726 |
7.19 |
| 2026-04-05 00:00 |
12:38:51.97 |
-01:26:00.9 |
HIP 61726 |
8.23 |
| 2026-04-05 12:00 |
12:38:47.28 |
-01:25:27.1 |
HIP 61726 |
9.34 |
| 2026-04-06 00:00 |
12:38:42.60 |
-01:24:53.4 |
HIP 61726 |
10.49 |
| 2026-04-06 12:00 |
12:38:37.92 |
-01:24:19.8 |
HIP 61726 |
11.66 |
| 2026-04-07 00:00 |
12:38:33.25 |
-01:23:46.2 |
HIP 61726 |
12.86 |
| 2026-04-07 12:00 |
12:38:28.58 |
-01:23:12.7 |
HIP 61726 |
14.08 |
| 2026-04-08 00:00 |
12:38:23.92 |
-01:22:39.3 |
HIP 61726 |
15.31 |
| 2026-04-08 12:00 |
12:38:19.27 |
-01:22:05.9 |
HIP 61726 |
16.54 |
| 2026-04-09 00:00 |
12:38:14.62 |
-01:21:32.7 |
HIP 61726 |
17.78 |
| 2026-04-09 12:00 |
12:38:09.98 |
-01:20:59.5 |
HIP 61726 |
19.02 |
| 2026-04-10 00:00 |
12:38:05.35 |
-01:20:26.4 |
HIP 61726 |
20.27 |
| 2026-04-10 12:00 |
12:38:00.72 |
-01:19:53.3 |
HIP 61726 |
21.52 |
| 2026-04-11 00:00 |
12:37:56.11 |
-01:19:20.4 |
HIP 61726 |
22.77 |
| 2026-04-11 12:00 |
12:37:51.50 |
-01:18:47.5 |
HIP 61726 |
24.02 |
| 2026-04-12 00:00 |
12:37:46.90 |
-01:18:14.8 |
HIP 61726 |
25.26 |
| 2026-04-12 12:00 |
12:37:42.32 |
-01:17:42.1 |
HIP 61726 |
26.51 |
| 2026-04-13 00:00 |
12:37:37.74 |
-01:17:09.6 |
HIP 61491 |
26.55 |
| 2026-04-13 12:00 |
12:37:33.17 |
-01:16:37.1 |
HIP 61491 |
25.63 |
| 2026-04-14 00:00 |
12:37:28.62 |
-01:16:04.7 |
HIP 61491 |
24.74 |
| 2026-04-14 12:00 |
12:37:24.07 |
-01:15:32.5 |
HIP 61491 |
23.89 |
| 2026-04-15 00:00 |
12:37:19.54 |
-01:15:00.4 |
HIP 61491 |
23.08 |
| 2026-04-15 12:00 |
12:37:15.02 |
-01:14:28.3 |
HIP 61491 |
22.30 |
| 2026-04-16 00:00 |
12:37:10.51 |
-01:13:56.4 |
HIP 61491 |
21.58 |