| Parameter |
Value |
| Designation |
P/2010 H5 (Scotti) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-04-17T17:01:04.771200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:42Z |
| Obs used |
67 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-05-23.0000000 |
| e |
0.15644880 |
| q (au) |
6.025951 |
| a (au) |
7.143551 |
| i (deg) |
14.087184 |
| Ω (om, deg) |
24.899476 |
| ω (w, deg) |
175.129940 |
| M (ma, deg) |
1.821779 |
Magnitude
Scatter + Global Linear
$$
M_a = (8.141 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
8.141 |
| n |
6.000 |
| gf |
0.975 |
| gb |
-0.689 |
| k |
0.800 |
| δ90 |
9.999 |
| 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 |
09:06:23.73 |
+28:48:56.5 |
HIP 44627 |
11.62 |
| 2026-07-29 12:00 |
09:06:46.88 |
+28:47:11.6 |
HIP 44627 |
15.60 |
| 2026-07-30 00:00 |
09:07:10.03 |
+28:45:26.7 |
HIP 44627 |
20.24 |
| 2026-07-30 12:00 |
09:07:33.19 |
+28:43:42.0 |
HIP 44627 |
25.18 |
| 2026-07-31 00:00 |
09:07:56.36 |
+28:41:57.4 |
HIP 44627 |
30.26 |
| 2026-07-31 12:00 |
09:08:19.53 |
+28:40:12.8 |
HIP 44763 |
35.21 |
| 2026-08-01 00:00 |
09:08:42.71 |
+28:38:28.3 |
HIP 45049 |
35.22 |
| 2026-08-01 12:00 |
09:09:05.89 |
+28:36:44.0 |
HIP 45049 |
33.39 |
| 2026-08-02 00:00 |
09:09:29.08 |
+28:34:59.7 |
HIP 45049 |
32.36 |
| 2026-08-02 12:00 |
09:09:52.26 |
+28:33:15.5 |
HIP 45049 |
32.19 |
| 2026-08-03 00:00 |
09:10:15.45 |
+28:31:31.4 |
HIP 45157 |
30.52 |
| 2026-08-03 12:00 |
09:10:38.64 |
+28:29:47.4 |
HIP 45157 |
28.37 |
| 2026-08-04 00:00 |
09:11:01.84 |
+28:28:03.6 |
HIP 45157 |
27.13 |
| 2026-08-04 12:00 |
09:11:25.03 |
+28:26:19.8 |
HIP 45157 |
26.92 |
| 2026-08-05 00:00 |
09:11:48.22 |
+28:24:36.1 |
HIP 45157 |
27.77 |
| 2026-08-05 12:00 |
09:12:11.42 |
+28:22:52.6 |
HIP 45157 |
29.58 |
| 2026-08-06 00:00 |
09:12:34.61 |
+28:21:09.2 |
HIP 45157 |
32.19 |
| 2026-08-06 12:00 |
09:12:57.80 |
+28:19:25.9 |
HIP 45157 |
35.44 |
| 2026-08-07 00:00 |
09:13:20.99 |
+28:17:42.7 |
HIP 45359 |
34.85 |
| 2026-08-07 12:00 |
09:13:44.18 |
+28:15:59.6 |
HIP 45359 |
31.13 |
| 2026-08-08 00:00 |
09:14:07.36 |
+28:14:16.6 |
HIP 45433 |
26.80 |
| 2026-08-08 12:00 |
09:14:30.54 |
+28:12:33.8 |
HIP 45433 |
22.11 |
| 2026-08-09 00:00 |
09:14:53.72 |
+28:10:51.2 |
HIP 45433 |
17.81 |
| 2026-08-09 12:00 |
09:15:16.89 |
+28:09:08.6 |
HIP 45433 |
14.28 |
| 2026-08-10 00:00 |
09:15:40.05 |
+28:07:26.2 |
HIP 45433 |
12.20 |
| 2026-08-10 12:00 |
09:16:03.21 |
+28:05:43.9 |
HIP 45433 |
12.32 |
| 2026-08-11 00:00 |
09:16:26.36 |
+28:04:01.8 |
HIP 45569 |
14.39 |
| 2026-08-11 12:00 |
09:16:49.51 |
+28:02:19.9 |
HIP 45569 |
9.61 |
| 2026-08-12 00:00 |
09:17:12.64 |
+28:00:38.1 |
HIP 45569 |
5.97 |
| 2026-08-12 12:00 |
09:17:35.77 |
+27:58:56.4 |
HIP 45569 |
6.08 |
| 2026-08-13 00:00 |
09:17:58.89 |
+27:57:14.9 |
HIP 45569 |
9.81 |
| 2026-08-13 12:00 |
09:18:21.99 |
+27:55:33.6 |
HIP 45569 |
14.60 |
| 2026-08-14 00:00 |
09:18:45.09 |
+27:53:52.4 |
HIP 45569 |
19.70 |
| 2026-08-14 12:00 |
09:19:08.17 |
+27:52:11.4 |
HIP 45569 |
24.91 |
| 2026-08-15 00:00 |
09:19:31.24 |
+27:50:30.6 |
HIP 45767 |
27.67 |
| 2026-08-15 12:00 |
09:19:54.30 |
+27:48:50.0 |
HIP 45767 |
28.73 |
| 2026-08-16 00:00 |
09:20:17.35 |
+27:47:09.5 |
HIP 45767 |
30.69 |
| 2026-08-16 12:00 |
09:20:40.38 |
+27:45:29.3 |
HIP 45988 |
28.35 |
| 2026-08-17 00:00 |
09:21:03.39 |
+27:43:49.2 |
HIP 45988 |
23.00 |
| 2026-08-17 12:00 |
09:21:26.39 |
+27:42:09.3 |
HIP 45988 |
17.66 |
| 2026-08-18 00:00 |
09:21:49.38 |
+27:40:29.6 |
HIP 45988 |
12.33 |
| 2026-08-18 12:00 |
09:22:12.35 |
+27:38:50.1 |
HIP 45988 |
7.03 |
| 2026-08-19 00:00 |
09:22:35.30 |
+27:37:10.8 |
HIP 45988 |
2.03 |