| Parameter |
Value |
| Designation |
P/2010 H4 (Scotti) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-07-03T04:12:20.969280Z |
| Orbit solution date (soln_date, UTC) |
2024-04-13T16:42:57Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-05-03.0000000 |
| e |
0.27215157 |
| q (au) |
4.820821 |
| a (au) |
6.623386 |
| i (deg) |
2.314372 |
| Ω (om, deg) |
44.846591 |
| ω (w, deg) |
181.161990 |
| M (ma, deg) |
356.462799 |
Magnitude
Scatter + Global Linear
$$
M_a = (6.615 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
6.615 |
| n |
6.000 |
| gf |
0.992 |
| gb |
-0.974 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
11:44:24.54 |
+03:22:30.0 |
HIP 57302 |
20.16 |
| 2026-06-01 12:00 |
11:44:28.92 |
+03:21:45.9 |
HIP 57302 |
19.04 |
| 2026-06-02 00:00 |
11:44:33.47 |
+03:21:00.7 |
HIP 57302 |
17.92 |
| 2026-06-02 12:00 |
11:44:38.19 |
+03:20:14.5 |
HIP 57302 |
16.80 |
| 2026-06-03 00:00 |
11:44:43.08 |
+03:19:27.2 |
HIP 57302 |
15.69 |
| 2026-06-03 12:00 |
11:44:48.14 |
+03:18:38.8 |
HIP 57302 |
14.63 |
| 2026-06-04 00:00 |
11:44:53.36 |
+03:17:49.4 |
HIP 57302 |
13.62 |
| 2026-06-04 12:00 |
11:44:58.76 |
+03:16:58.8 |
HIP 57302 |
12.70 |
| 2026-06-05 00:00 |
11:45:04.32 |
+03:16:07.3 |
HIP 57302 |
11.91 |
| 2026-06-05 12:00 |
11:45:10.05 |
+03:15:14.6 |
HIP 57302 |
11.29 |
| 2026-06-06 00:00 |
11:45:15.94 |
+03:14:21.0 |
HIP 57302 |
10.90 |
| 2026-06-06 12:00 |
11:45:22.01 |
+03:13:26.2 |
HIP 57302 |
10.78 |
| 2026-06-07 00:00 |
11:45:28.24 |
+03:12:30.4 |
HIP 57302 |
10.96 |
| 2026-06-07 12:00 |
11:45:34.63 |
+03:11:33.6 |
HIP 57302 |
11.46 |
| 2026-06-08 00:00 |
11:45:41.19 |
+03:10:35.7 |
HIP 57302 |
12.24 |
| 2026-06-08 12:00 |
11:45:47.91 |
+03:09:36.8 |
HIP 57302 |
13.28 |
| 2026-06-09 00:00 |
11:45:54.80 |
+03:08:36.8 |
HIP 57302 |
14.54 |
| 2026-06-09 12:00 |
11:46:01.85 |
+03:07:35.8 |
HIP 57302 |
15.99 |
| 2026-06-10 00:00 |
11:46:09.07 |
+03:06:33.8 |
HIP 57302 |
17.59 |
| 2026-06-10 12:00 |
11:46:16.45 |
+03:05:30.7 |
HIP 57370 |
18.30 |
| 2026-06-11 00:00 |
11:46:23.99 |
+03:04:26.6 |
HIP 57370 |
18.36 |
| 2026-06-11 12:00 |
11:46:31.69 |
+03:03:21.5 |
HIP 57370 |
18.68 |
| 2026-06-12 00:00 |
11:46:39.56 |
+03:02:15.4 |
HIP 57370 |
19.27 |
| 2026-06-12 12:00 |
11:46:47.58 |
+03:01:08.3 |
HIP 57370 |
20.12 |
| 2026-06-13 00:00 |
11:46:55.77 |
+03:00:00.1 |
HIP 57370 |
21.21 |
| 2026-06-13 12:00 |
11:47:04.12 |
+02:58:51.0 |
HIP 57370 |
22.52 |
| 2026-06-14 00:00 |
11:47:12.62 |
+02:57:40.8 |
HIP 57370 |
24.03 |
| 2026-06-14 12:00 |
11:47:21.29 |
+02:56:29.6 |
HIP 57370 |
25.72 |
| 2026-06-15 00:00 |
11:47:30.11 |
+02:55:17.5 |
HIP 57370 |
27.55 |
| 2026-06-15 12:00 |
11:47:39.09 |
+02:54:04.3 |
HIP 57370 |
29.52 |
| 2026-06-16 00:00 |
11:47:48.23 |
+02:52:50.2 |
HIP 57370 |
31.62 |
| 2026-06-16 12:00 |
11:47:57.53 |
+02:51:35.1 |
HIP 57370 |
33.82 |
| 2026-06-17 00:00 |
11:48:06.98 |
+02:50:19.0 |
HIP 57370 |
36.11 |
| 2026-06-17 12:00 |
11:48:16.58 |
+02:49:01.9 |
HIP 57370 |
38.50 |
| 2026-06-18 00:00 |
11:48:26.34 |
+02:47:43.9 |
HIP 57681 |
39.33 |
| 2026-06-18 12:00 |
11:48:36.26 |
+02:46:24.8 |
HIP 57681 |
36.96 |
| 2026-06-19 00:00 |
11:48:46.32 |
+02:45:04.9 |
HIP 57681 |
34.63 |
| 2026-06-19 12:00 |
11:48:56.54 |
+02:43:44.0 |
HIP 57681 |
32.35 |
| 2026-06-20 00:00 |
11:49:06.91 |
+02:42:22.1 |
HIP 57681 |
30.15 |
| 2026-06-20 12:00 |
11:49:17.43 |
+02:40:59.3 |
HIP 57681 |
28.05 |
| 2026-06-21 00:00 |
11:49:28.10 |
+02:39:35.6 |
HIP 57681 |
26.10 |
| 2026-06-21 12:00 |
11:49:38.92 |
+02:38:10.9 |
HIP 57681 |
24.35 |
| 2026-06-22 00:00 |
11:49:49.89 |
+02:36:45.4 |
HIP 57681 |
22.86 |