| 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) |
| 2026-05-12 00:00 |
10:56:33.61 |
+24:11:08.4 |
HIP 53545 |
9.82 |
| 2026-05-12 12:00 |
10:56:31.16 |
+24:10:26.4 |
HIP 53545 |
10.21 |
| 2026-05-13 00:00 |
10:56:28.81 |
+24:09:43.8 |
HIP 53545 |
10.64 |
| 2026-05-13 12:00 |
10:56:26.55 |
+24:09:00.7 |
HIP 53545 |
11.10 |
| 2026-05-14 00:00 |
10:56:24.38 |
+24:08:16.9 |
HIP 53545 |
11.59 |
| 2026-05-14 12:00 |
10:56:22.31 |
+24:07:32.6 |
HIP 53545 |
12.10 |
| 2026-05-15 00:00 |
10:56:20.33 |
+24:06:47.7 |
HIP 53545 |
12.63 |
| 2026-05-15 12:00 |
10:56:18.45 |
+24:06:02.3 |
HIP 53545 |
13.18 |
| 2026-05-16 00:00 |
10:56:16.66 |
+24:05:16.3 |
HIP 53545 |
13.75 |
| 2026-05-16 12:00 |
10:56:14.97 |
+24:04:29.7 |
HIP 53545 |
14.32 |
| 2026-05-17 00:00 |
10:56:13.37 |
+24:03:42.6 |
HIP 53545 |
14.91 |
| 2026-05-17 12:00 |
10:56:11.87 |
+24:02:54.9 |
HIP 53545 |
15.51 |
| 2026-05-18 00:00 |
10:56:10.46 |
+24:02:06.7 |
HIP 53545 |
16.11 |
| 2026-05-18 12:00 |
10:56:09.14 |
+24:01:17.9 |
HIP 53545 |
16.73 |
| 2026-05-19 00:00 |
10:56:07.92 |
+24:00:28.6 |
HIP 53545 |
17.35 |
| 2026-05-19 12:00 |
10:56:06.80 |
+23:59:38.7 |
HIP 53545 |
17.97 |
| 2026-05-20 00:00 |
10:56:05.76 |
+23:58:48.4 |
HIP 53545 |
18.60 |
| 2026-05-20 12:00 |
10:56:04.83 |
+23:57:57.4 |
HIP 53545 |
19.24 |
| 2026-05-21 00:00 |
10:56:03.98 |
+23:57:06.0 |
HIP 53545 |
19.88 |
| 2026-05-21 12:00 |
10:56:03.24 |
+23:56:14.1 |
HIP 53370 |
20.03 |
| 2026-05-22 00:00 |
10:56:02.58 |
+23:55:21.6 |
HIP 53370 |
19.44 |
| 2026-05-22 12:00 |
10:56:02.02 |
+23:54:28.6 |
HIP 53370 |
18.89 |
| 2026-05-23 00:00 |
10:56:01.55 |
+23:53:35.1 |
HIP 53370 |
18.38 |
| 2026-05-23 12:00 |
10:56:01.18 |
+23:52:41.2 |
HIP 53370 |
17.91 |
| 2026-05-24 00:00 |
10:56:00.90 |
+23:51:46.7 |
HIP 53370 |
17.50 |
| 2026-05-24 12:00 |
10:56:00.71 |
+23:50:51.7 |
HIP 53370 |
17.15 |
| 2026-05-25 00:00 |
10:56:00.62 |
+23:49:56.3 |
HIP 53370 |
16.85 |
| 2026-05-25 12:00 |
10:56:00.61 |
+23:49:00.3 |
HIP 53370 |
16.62 |
| 2026-05-26 00:00 |
10:56:00.71 |
+23:48:03.9 |
HIP 53370 |
16.46 |
| 2026-05-26 12:00 |
10:56:00.89 |
+23:47:07.0 |
HIP 53370 |
16.38 |
| 2026-05-27 00:00 |
10:56:01.16 |
+23:46:09.7 |
HIP 53370 |
16.36 |
| 2026-05-27 12:00 |
10:56:01.53 |
+23:45:11.8 |
HIP 53370 |
16.43 |
| 2026-05-28 00:00 |
10:56:01.99 |
+23:44:13.5 |
HIP 53370 |
16.57 |
| 2026-05-28 12:00 |
10:56:02.54 |
+23:43:14.8 |
HIP 53370 |
16.79 |
| 2026-05-29 00:00 |
10:56:03.19 |
+23:42:15.6 |
HIP 53370 |
17.09 |
| 2026-05-29 12:00 |
10:56:03.92 |
+23:41:15.9 |
HIP 53370 |
17.46 |
| 2026-05-30 00:00 |
10:56:04.74 |
+23:40:15.8 |
HIP 53370 |
17.90 |
| 2026-05-30 12:00 |
10:56:05.66 |
+23:39:15.3 |
HIP 53370 |
18.41 |
| 2026-05-31 00:00 |
10:56:06.67 |
+23:38:14.3 |
HIP 53370 |
18.99 |
| 2026-05-31 12:00 |
10:56:07.76 |
+23:37:12.9 |
HIP 53370 |
19.62 |
| 2026-06-01 00:00 |
10:56:08.95 |
+23:36:11.0 |
HIP 53370 |
20.32 |
| 2026-06-01 12:00 |
10:56:10.23 |
+23:35:08.7 |
HIP 53476 |
20.27 |
| 2026-06-02 00:00 |
10:56:11.59 |
+23:34:06.0 |
HIP 53476 |
19.19 |