| 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 |
0.980 |
| gb |
-0.545 |
| k |
0.800 |
| δ90 |
9.527 |
| 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 |
11:06:38.21 |
+24:26:58.3 |
HIP 54269 |
15.06 |
| 2026-03-26 12:00 |
11:06:28.69 |
+24:27:21.6 |
HIP 54269 |
14.55 |
| 2026-03-27 00:00 |
11:06:19.21 |
+24:27:44.2 |
HIP 54269 |
14.35 |
| 2026-03-27 12:00 |
11:06:09.78 |
+24:28:06.1 |
HIP 54269 |
14.48 |
| 2026-03-28 00:00 |
11:06:00.39 |
+24:28:27.2 |
HIP 54269 |
14.91 |
| 2026-03-28 12:00 |
11:05:51.05 |
+24:28:47.7 |
HIP 54269 |
15.62 |
| 2026-03-29 00:00 |
11:05:41.75 |
+24:29:07.4 |
HIP 54154 |
16.38 |
| 2026-03-29 12:00 |
11:05:32.50 |
+24:29:26.4 |
HIP 54154 |
14.86 |
| 2026-03-30 00:00 |
11:05:23.30 |
+24:29:44.6 |
HIP 54154 |
13.49 |
| 2026-03-30 12:00 |
11:05:14.14 |
+24:30:02.2 |
HIP 54154 |
12.34 |
| 2026-03-31 00:00 |
11:05:05.04 |
+24:30:19.0 |
HIP 54154 |
11.46 |
| 2026-03-31 12:00 |
11:04:55.99 |
+24:30:35.1 |
HIP 54154 |
10.90 |
| 2026-04-01 00:00 |
11:04:46.98 |
+24:30:50.4 |
HIP 54154 |
10.71 |
| 2026-04-01 12:00 |
11:04:38.03 |
+24:31:05.0 |
HIP 54154 |
10.91 |
| 2026-04-02 00:00 |
11:04:29.14 |
+24:31:18.9 |
HIP 54154 |
11.46 |
| 2026-04-02 12:00 |
11:04:20.29 |
+24:31:32.1 |
HIP 54154 |
12.31 |
| 2026-04-03 00:00 |
11:04:11.51 |
+24:31:44.5 |
HIP 54154 |
13.40 |
| 2026-04-03 12:00 |
11:04:02.77 |
+24:31:56.2 |
HIP 54154 |
14.66 |
| 2026-04-04 00:00 |
11:03:54.10 |
+24:32:07.2 |
HIP 54154 |
16.06 |
| 2026-04-04 12:00 |
11:03:45.48 |
+24:32:17.4 |
HIP 54154 |
17.55 |
| 2026-04-05 00:00 |
11:03:36.92 |
+24:32:26.9 |
HIP 54154 |
19.11 |
| 2026-04-05 12:00 |
11:03:28.42 |
+24:32:35.7 |
HIP 54154 |
20.72 |
| 2026-04-06 00:00 |
11:03:19.98 |
+24:32:43.7 |
HIP 54154 |
22.36 |
| 2026-04-06 12:00 |
11:03:11.60 |
+24:32:51.0 |
HIP 53887 |
23.87 |
| 2026-04-07 00:00 |
11:03:03.29 |
+24:32:57.5 |
HIP 53887 |
22.06 |
| 2026-04-07 12:00 |
11:02:55.03 |
+24:33:03.4 |
HIP 53887 |
20.27 |
| 2026-04-08 00:00 |
11:02:46.84 |
+24:33:08.4 |
HIP 53887 |
18.51 |
| 2026-04-08 12:00 |
11:02:38.71 |
+24:33:12.8 |
HIP 53887 |
16.79 |
| 2026-04-09 00:00 |
11:02:30.65 |
+24:33:16.4 |
HIP 53887 |
15.10 |
| 2026-04-09 12:00 |
11:02:22.66 |
+24:33:19.3 |
HIP 53887 |
13.46 |
| 2026-04-10 00:00 |
11:02:14.73 |
+24:33:21.4 |
HIP 53887 |
11.88 |
| 2026-04-10 12:00 |
11:02:06.86 |
+24:33:22.8 |
HIP 53887 |
10.38 |
| 2026-04-11 00:00 |
11:01:59.07 |
+24:33:23.5 |
HIP 53887 |
8.99 |
| 2026-04-11 12:00 |
11:01:51.34 |
+24:33:23.4 |
HIP 53887 |
7.76 |
| 2026-04-12 00:00 |
11:01:43.69 |
+24:33:22.6 |
HIP 53887 |
6.76 |
| 2026-04-12 12:00 |
11:01:36.10 |
+24:33:21.0 |
HIP 53887 |
6.10 |
| 2026-04-13 00:00 |
11:01:28.59 |
+24:33:18.7 |
HIP 53887 |
5.87 |
| 2026-04-13 12:00 |
11:01:21.15 |
+24:33:15.7 |
HIP 53887 |
6.11 |
| 2026-04-14 00:00 |
11:01:13.78 |
+24:33:11.9 |
HIP 53887 |
6.76 |
| 2026-04-14 12:00 |
11:01:06.48 |
+24:33:07.5 |
HIP 53887 |
7.71 |
| 2026-04-15 00:00 |
11:00:59.26 |
+24:33:02.2 |
HIP 53887 |
8.85 |
| 2026-04-15 12:00 |
11:00:52.11 |
+24:32:56.3 |
HIP 53887 |
10.11 |
| 2026-04-16 00:00 |
11:00:45.04 |
+24:32:49.6 |
HIP 53887 |
11.44 |