| 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) |
| 2026-07-29 00:00 |
11:07:14.00 |
+21:04:18.4 |
HIP 54352 |
2.67 |
| 2026-07-29 12:00 |
11:07:23.34 |
+21:02:51.5 |
HIP 54352 |
4.92 |
| 2026-07-30 00:00 |
11:07:32.73 |
+21:01:24.5 |
HIP 54352 |
7.43 |
| 2026-07-30 12:00 |
11:07:42.16 |
+20:59:57.5 |
HIP 54377 |
9.48 |
| 2026-07-31 00:00 |
11:07:51.63 |
+20:58:30.6 |
HIP 54443 |
8.23 |
| 2026-07-31 12:00 |
11:08:01.14 |
+20:57:03.6 |
HIP 54443 |
7.33 |
| 2026-08-01 00:00 |
11:08:10.70 |
+20:55:36.6 |
HIP 54443 |
7.33 |
| 2026-08-01 12:00 |
11:08:20.30 |
+20:54:09.6 |
HIP 54443 |
8.24 |
| 2026-08-02 00:00 |
11:08:29.94 |
+20:52:42.7 |
HIP 54443 |
9.81 |
| 2026-08-02 12:00 |
11:08:39.62 |
+20:51:15.7 |
HIP 54443 |
11.79 |
| 2026-08-03 00:00 |
11:08:49.34 |
+20:49:48.8 |
HIP 54443 |
14.02 |
| 2026-08-03 12:00 |
11:08:59.10 |
+20:48:21.8 |
HIP 54443 |
16.38 |
| 2026-08-04 00:00 |
11:09:08.90 |
+20:46:54.9 |
HIP 54443 |
18.85 |
| 2026-08-04 12:00 |
11:09:18.74 |
+20:45:28.0 |
HIP 54443 |
21.38 |
| 2026-08-05 00:00 |
11:09:28.62 |
+20:44:01.2 |
HIP 54443 |
23.95 |
| 2026-08-05 12:00 |
11:09:38.53 |
+20:42:34.3 |
HIP 54443 |
26.56 |
| 2026-08-06 00:00 |
11:09:48.48 |
+20:41:07.5 |
HIP 54620 |
26.75 |
| 2026-08-06 12:00 |
11:09:58.47 |
+20:39:40.7 |
HIP 54620 |
24.38 |
| 2026-08-07 00:00 |
11:10:08.50 |
+20:38:14.0 |
HIP 54620 |
22.09 |
| 2026-08-07 12:00 |
11:10:18.56 |
+20:36:47.3 |
HIP 54620 |
19.92 |
| 2026-08-08 00:00 |
11:10:28.66 |
+20:35:20.6 |
HIP 54620 |
17.92 |
| 2026-08-08 12:00 |
11:10:38.80 |
+20:33:54.0 |
HIP 54620 |
16.14 |
| 2026-08-09 00:00 |
11:10:48.96 |
+20:32:27.4 |
HIP 54620 |
14.68 |
| 2026-08-09 12:00 |
11:10:59.17 |
+20:31:00.9 |
HIP 54620 |
13.64 |
| 2026-08-10 00:00 |
11:11:09.41 |
+20:29:34.5 |
HIP 54620 |
13.12 |
| 2026-08-10 12:00 |
11:11:19.68 |
+20:28:08.1 |
HIP 54620 |
13.20 |
| 2026-08-11 00:00 |
11:11:29.98 |
+20:26:41.7 |
HIP 54620 |
13.87 |
| 2026-08-11 12:00 |
11:11:40.32 |
+20:25:15.4 |
HIP 54620 |
15.04 |
| 2026-08-12 00:00 |
11:11:50.69 |
+20:23:49.2 |
HIP 54620 |
16.63 |
| 2026-08-12 12:00 |
11:12:01.08 |
+20:22:23.1 |
HIP 54620 |
18.52 |
| 2026-08-13 00:00 |
11:12:11.52 |
+20:20:57.1 |
HIP 54620 |
20.63 |
| 2026-08-13 12:00 |
11:12:21.98 |
+20:19:31.1 |
HIP 54844 |
22.00 |
| 2026-08-14 00:00 |
11:12:32.47 |
+20:18:05.2 |
HIP 54844 |
19.16 |
| 2026-08-14 12:00 |
11:12:42.99 |
+20:16:39.4 |
HIP 54844 |
16.31 |
| 2026-08-15 00:00 |
11:12:53.53 |
+20:15:13.7 |
HIP 54844 |
13.46 |
| 2026-08-15 12:00 |
11:13:04.11 |
+20:13:48.1 |
HIP 54844 |
10.61 |
| 2026-08-16 00:00 |
11:13:14.71 |
+20:12:22.6 |
HIP 54844 |
7.75 |
| 2026-08-16 12:00 |
11:13:25.34 |
+20:10:57.2 |
HIP 54844 |
4.91 |
| 2026-08-17 00:00 |
11:13:36.00 |
+20:09:31.9 |
HIP 54844 |
2.16 |
| 2026-08-17 12:00 |
11:13:46.69 |
+20:08:06.7 |
HIP 54844 |
1.33 |
| 2026-08-18 00:00 |
11:13:57.39 |
+20:06:41.7 |
HIP 54844 |
3.94 |
| 2026-08-18 12:00 |
11:14:08.13 |
+20:05:16.7 |
HIP 54895 |
5.14 |
| 2026-08-19 00:00 |
11:14:18.89 |
+20:03:51.8 |
HIP 54895 |
2.40 |