| 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 |
1.000 |
| gb |
-0.689 |
| k |
0.800 |
| δ90 |
10.000 |
| 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 |
08:03:42.11 |
+35:30:40.0 |
HIP 39456 |
5.92 |
| 2026-03-26 12:00 |
08:03:41.31 |
+35:29:33.8 |
HIP 39456 |
5.01 |
| 2026-03-27 00:00 |
08:03:40.68 |
+35:28:27.1 |
HIP 39456 |
4.16 |
| 2026-03-27 12:00 |
08:03:40.24 |
+35:27:19.8 |
HIP 39456 |
3.45 |
| 2026-03-28 00:00 |
08:03:39.97 |
+35:26:12.0 |
HIP 39456 |
2.95 |
| 2026-03-28 12:00 |
08:03:39.89 |
+35:25:03.7 |
HIP 39456 |
2.82 |
| 2026-03-29 00:00 |
08:03:39.98 |
+35:23:54.8 |
HIP 39456 |
3.09 |
| 2026-03-29 12:00 |
08:03:40.25 |
+35:22:45.5 |
HIP 39456 |
3.69 |
| 2026-03-30 00:00 |
08:03:40.70 |
+35:21:35.6 |
HIP 39456 |
4.50 |
| 2026-03-30 12:00 |
08:03:41.32 |
+35:20:25.3 |
HIP 39456 |
5.44 |
| 2026-03-31 00:00 |
08:03:42.12 |
+35:19:14.4 |
HIP 39456 |
6.44 |
| 2026-03-31 12:00 |
08:03:43.10 |
+35:18:03.1 |
HIP 39456 |
7.50 |
| 2026-04-01 00:00 |
08:03:44.26 |
+35:16:51.3 |
HIP 39456 |
8.60 |
| 2026-04-01 12:00 |
08:03:45.59 |
+35:15:39.0 |
HIP 39456 |
9.73 |
| 2026-04-02 00:00 |
08:03:47.10 |
+35:14:26.3 |
HIP 39456 |
10.88 |
| 2026-04-02 12:00 |
08:03:48.79 |
+35:13:13.1 |
HIP 39456 |
12.06 |
| 2026-04-03 00:00 |
08:03:50.65 |
+35:11:59.5 |
HIP 39456 |
13.26 |
| 2026-04-03 12:00 |
08:03:52.68 |
+35:10:45.4 |
HIP 39456 |
14.48 |
| 2026-04-04 00:00 |
08:03:54.89 |
+35:09:30.8 |
HIP 39456 |
15.73 |
| 2026-04-04 12:00 |
08:03:57.27 |
+35:08:15.8 |
HIP 39456 |
16.99 |
| 2026-04-05 00:00 |
08:03:59.83 |
+35:07:00.4 |
HIP 39456 |
18.27 |
| 2026-04-05 12:00 |
08:04:02.56 |
+35:05:44.5 |
HIP 39456 |
19.58 |
| 2026-04-06 00:00 |
08:04:05.47 |
+35:04:28.2 |
HIP 39456 |
20.91 |
| 2026-04-06 12:00 |
08:04:08.54 |
+35:03:11.5 |
HIP 39456 |
22.25 |
| 2026-04-07 00:00 |
08:04:11.79 |
+35:01:54.4 |
HIP 39456 |
23.62 |
| 2026-04-07 12:00 |
08:04:15.21 |
+35:00:36.9 |
HIP 39456 |
25.01 |
| 2026-04-08 00:00 |
08:04:18.81 |
+34:59:19.0 |
HIP 39456 |
26.42 |
| 2026-04-08 12:00 |
08:04:22.57 |
+34:58:00.6 |
HIP 39667 |
27.06 |
| 2026-04-09 00:00 |
08:04:26.51 |
+34:56:41.9 |
HIP 39667 |
25.78 |
| 2026-04-09 12:00 |
08:04:30.61 |
+34:55:22.8 |
HIP 39667 |
24.49 |
| 2026-04-10 00:00 |
08:04:34.89 |
+34:54:03.3 |
HIP 39667 |
23.21 |
| 2026-04-10 12:00 |
08:04:39.34 |
+34:52:43.4 |
HIP 39667 |
21.93 |
| 2026-04-11 00:00 |
08:04:43.95 |
+34:51:23.1 |
HIP 39667 |
20.66 |
| 2026-04-11 12:00 |
08:04:48.73 |
+34:50:02.5 |
HIP 39667 |
19.41 |
| 2026-04-12 00:00 |
08:04:53.68 |
+34:48:41.5 |
HIP 39649 |
17.87 |
| 2026-04-12 12:00 |
08:04:58.80 |
+34:47:20.1 |
HIP 39649 |
16.30 |
| 2026-04-13 00:00 |
08:05:04.09 |
+34:45:58.3 |
HIP 39649 |
14.72 |
| 2026-04-13 12:00 |
08:05:09.54 |
+34:44:36.2 |
HIP 39649 |
13.15 |
| 2026-04-14 00:00 |
08:05:15.16 |
+34:43:13.8 |
HIP 39649 |
11.60 |
| 2026-04-14 12:00 |
08:05:20.95 |
+34:41:51.0 |
HIP 39649 |
10.10 |
| 2026-04-15 00:00 |
08:05:26.90 |
+34:40:27.9 |
HIP 39649 |
8.69 |
| 2026-04-15 12:00 |
08:05:33.01 |
+34:39:04.4 |
HIP 39649 |
7.43 |
| 2026-04-16 00:00 |
08:05:39.29 |
+34:37:40.5 |
HIP 39649 |
6.45 |