| Parameter |
Value |
| Designation |
352P/Skiff |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-06-21T01:08:15.377280Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:48Z |
| Obs used |
637 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
11.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2012-10-28.0000000 |
| e |
0.61766865 |
| q (au) |
2.522709 |
| a (au) |
6.598227 |
| i (deg) |
21.064633 |
| Ω (om, deg) |
28.143742 |
| ω (w, deg) |
309.351302 |
| M (ma, deg) |
261.313630 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.224 + 2.671\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.224 |
| n |
2.671 |
| gf |
0.965 |
| gb |
-0.545 |
| k |
0.800 |
| δ90 |
9.498 |
| 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) |
| 2026-09-20 00:00 |
11:26:16.37 |
+18:39:45.0 |
HIP 55711 |
38.38 |
| 2026-09-20 12:00 |
11:26:27.68 |
+18:38:34.3 |
HIP 55711 |
38.76 |
| 2026-09-21 00:00 |
11:26:38.99 |
+18:37:24.0 |
HIP 55711 |
39.36 |
| 2026-09-21 12:00 |
11:26:50.28 |
+18:36:14.1 |
HIP 55711 |
40.16 |
| 2026-09-22 00:00 |
11:27:01.57 |
+18:35:04.4 |
HIP 55711 |
41.17 |
| 2026-09-22 12:00 |
11:27:12.84 |
+18:33:55.1 |
HIP 55924 |
39.95 |
| 2026-09-23 00:00 |
11:27:24.11 |
+18:32:46.1 |
HIP 55924 |
38.44 |
| 2026-09-23 12:00 |
11:27:35.36 |
+18:31:37.5 |
HIP 55924 |
37.11 |
| 2026-09-24 00:00 |
11:27:46.61 |
+18:30:29.2 |
HIP 55924 |
35.96 |
| 2026-09-24 12:00 |
11:27:57.84 |
+18:29:21.2 |
HIP 55924 |
35.02 |
| 2026-09-25 00:00 |
11:28:09.06 |
+18:28:13.6 |
HIP 56146 |
33.41 |
| 2026-09-25 12:00 |
11:28:20.27 |
+18:27:06.3 |
HIP 56146 |
30.65 |
| 2026-09-26 00:00 |
11:28:31.46 |
+18:25:59.4 |
HIP 56146 |
27.93 |
| 2026-09-26 12:00 |
11:28:42.65 |
+18:24:52.8 |
HIP 56146 |
25.25 |
| 2026-09-27 00:00 |
11:28:53.81 |
+18:23:46.6 |
HIP 56146 |
22.61 |
| 2026-09-27 12:00 |
11:29:04.97 |
+18:22:40.8 |
HIP 56146 |
20.04 |
| 2026-09-28 00:00 |
11:29:16.11 |
+18:21:35.3 |
HIP 56146 |
17.57 |
| 2026-09-28 12:00 |
11:29:27.23 |
+18:20:30.2 |
HIP 56146 |
15.23 |
| 2026-09-29 00:00 |
11:29:38.34 |
+18:19:25.4 |
HIP 56146 |
13.10 |
| 2026-09-29 12:00 |
11:29:49.43 |
+18:18:21.0 |
HIP 56146 |
11.29 |
| 2026-09-30 00:00 |
11:30:00.51 |
+18:17:17.0 |
HIP 56146 |
9.96 |
| 2026-09-30 12:00 |
11:30:11.56 |
+18:16:13.3 |
HIP 56146 |
9.34 |
| 2026-10-01 00:00 |
11:30:22.60 |
+18:15:10.1 |
HIP 56146 |
9.54 |
| 2026-10-01 12:00 |
11:30:33.63 |
+18:14:07.2 |
HIP 56146 |
10.52 |
| 2026-10-02 00:00 |
11:30:44.63 |
+18:13:04.7 |
HIP 56146 |
12.08 |
| 2026-10-02 12:00 |
11:30:55.62 |
+18:12:02.6 |
HIP 56146 |
14.03 |
| 2026-10-03 00:00 |
11:31:06.58 |
+18:11:00.9 |
HIP 56267 |
13.65 |
| 2026-10-03 12:00 |
11:31:17.53 |
+18:09:59.6 |
HIP 56267 |
10.97 |
| 2026-10-04 00:00 |
11:31:28.45 |
+18:08:58.6 |
HIP 56267 |
8.36 |
| 2026-10-04 12:00 |
11:31:39.35 |
+18:07:58.1 |
HIP 56267 |
5.92 |
| 2026-10-05 00:00 |
11:31:50.24 |
+18:06:58.0 |
HIP 56267 |
3.95 |
| 2026-10-05 12:00 |
11:32:01.09 |
+18:05:58.3 |
HIP 56267 |
3.39 |
| 2026-10-06 00:00 |
11:32:11.93 |
+18:04:59.0 |
HIP 56267 |
4.76 |
| 2026-10-06 12:00 |
11:32:22.74 |
+18:04:00.1 |
HIP 56267 |
6.99 |
| 2026-10-07 00:00 |
11:32:33.53 |
+18:03:01.7 |
HIP 56321 |
4.84 |
| 2026-10-07 12:00 |
11:32:44.30 |
+18:02:03.6 |
HIP 56321 |
2.33 |
| 2026-10-08 00:00 |
11:32:55.04 |
+18:01:06.0 |
HIP 56321 |
1.56 |
| 2026-10-08 12:00 |
11:33:05.75 |
+18:00:08.8 |
HIP 56321 |
3.77 |
| 2026-10-09 00:00 |
11:33:16.44 |
+17:59:12.1 |
HIP 56321 |
6.39 |
| 2026-10-09 12:00 |
11:33:27.10 |
+17:58:15.8 |
HIP 56321 |
9.05 |
| 2026-10-10 00:00 |
11:33:37.73 |
+17:57:19.9 |
HIP 56321 |
11.72 |
| 2026-10-10 12:00 |
11:33:48.34 |
+17:56:24.5 |
HIP 56321 |
14.39 |
| 2026-10-11 00:00 |
11:33:58.92 |
+17:55:29.5 |
HIP 56321 |
17.06 |