| Parameter |
Value |
| Designation |
430P/Scotti |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-06-14T14:13:40.632960Z |
| Orbit solution date (soln_date, UTC) |
2022-06-07T21:45:37Z |
| Obs used |
314 |
| NEO |
- |
| M1 |
16.900 |
| K1 |
5.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2014-05-22.0000000 |
| e |
0.49966940 |
| q (au) |
1.554418 |
| a (au) |
3.106781 |
| i (deg) |
4.474476 |
| Ω (om, deg) |
54.691887 |
| ω (w, deg) |
94.571829 |
| M (ma, deg) |
224.184036 |
Magnitude
Scatter + Global Linear
$$
M_a = (13.113 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
13.113 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
02:20:48.58 |
+12:16:12.9 |
HIP 11019 |
15.63 |
| 2026-06-01 12:00 |
02:21:27.28 |
+12:19:38.2 |
HIP 11019 |
7.39 |
| 2026-06-02 00:00 |
02:22:05.99 |
+12:23:03.1 |
HIP 11019 |
8.18 |
| 2026-06-02 12:00 |
02:22:44.71 |
+12:26:27.6 |
HIP 11082 |
7.16 |
| 2026-06-03 00:00 |
02:23:23.44 |
+12:29:51.7 |
HIP 11082 |
10.98 |
| 2026-06-03 12:00 |
02:24:02.18 |
+12:33:15.3 |
HIP 11082 |
19.79 |
| 2026-06-04 00:00 |
02:24:40.93 |
+12:36:38.5 |
HIP 11280 |
16.65 |
| 2026-06-04 12:00 |
02:25:19.70 |
+12:40:01.3 |
HIP 11280 |
10.84 |
| 2026-06-05 00:00 |
02:25:58.48 |
+12:43:23.6 |
HIP 11369 |
12.62 |
| 2026-06-05 12:00 |
02:26:37.26 |
+12:46:45.5 |
HIP 11369 |
7.60 |
| 2026-06-06 00:00 |
02:27:16.06 |
+12:50:06.9 |
HIP 11461 |
11.15 |
| 2026-06-06 12:00 |
02:27:54.86 |
+12:53:27.9 |
HIP 11461 |
4.13 |
| 2026-06-07 00:00 |
02:28:33.67 |
+12:56:48.4 |
HIP 11461 |
10.54 |
| 2026-06-07 12:00 |
02:29:12.50 |
+13:00:08.5 |
HIP 11518 |
17.81 |
| 2026-06-08 00:00 |
02:29:51.33 |
+13:03:28.1 |
HIP 11691 |
26.20 |
| 2026-06-08 12:00 |
02:30:30.16 |
+13:06:47.3 |
HIP 11691 |
19.48 |
| 2026-06-09 00:00 |
02:31:09.01 |
+13:10:06.0 |
HIP 11691 |
16.52 |
| 2026-06-09 12:00 |
02:31:47.86 |
+13:13:24.2 |
HIP 11691 |
19.17 |
| 2026-06-10 00:00 |
02:32:26.72 |
+13:16:42.0 |
HIP 11884 |
22.46 |
| 2026-06-10 12:00 |
02:33:05.58 |
+13:19:59.3 |
HIP 11884 |
15.90 |
| 2026-06-11 00:00 |
02:33:44.45 |
+13:23:16.0 |
HIP 11884 |
14.19 |
| 2026-06-11 12:00 |
02:34:23.32 |
+13:26:32.4 |
HIP 11884 |
18.72 |
| 2026-06-12 00:00 |
02:35:02.20 |
+13:29:48.2 |
HIP 12111 |
21.13 |
| 2026-06-12 12:00 |
02:35:41.08 |
+13:33:03.5 |
HIP 12137 |
11.73 |
| 2026-06-13 00:00 |
02:36:19.96 |
+13:36:18.4 |
HIP 12137 |
3.81 |
| 2026-06-13 12:00 |
02:36:58.84 |
+13:39:32.7 |
HIP 12137 |
9.54 |
| 2026-06-14 00:00 |
02:37:37.73 |
+13:42:46.5 |
HIP 12137 |
19.15 |
| 2026-06-14 12:00 |
02:38:16.61 |
+13:45:59.9 |
HIP 12258 |
24.00 |
| 2026-06-15 00:00 |
02:38:55.50 |
+13:49:12.7 |
HIP 12258 |
25.50 |
| 2026-06-15 12:00 |
02:39:34.38 |
+13:52:25.0 |
HIP 12461 |
24.41 |
| 2026-06-16 00:00 |
02:40:13.27 |
+13:55:36.8 |
HIP 12461 |
24.21 |
| 2026-06-16 12:00 |
02:40:52.15 |
+13:58:48.0 |
HIP 12461 |
27.84 |
| 2026-06-17 00:00 |
02:41:31.03 |
+14:01:58.8 |
HIP 12461 |
34.09 |
| 2026-06-17 12:00 |
02:42:09.91 |
+14:05:09.0 |
HIP 12616 |
30.97 |
| 2026-06-18 00:00 |
02:42:48.78 |
+14:08:18.7 |
HIP 12616 |
29.26 |
| 2026-06-18 12:00 |
02:43:27.65 |
+14:11:27.8 |
HIP 12838 |
23.14 |
| 2026-06-19 00:00 |
02:44:06.51 |
+14:14:36.4 |
HIP 12838 |
13.55 |
| 2026-06-19 12:00 |
02:44:45.37 |
+14:17:44.5 |
HIP 12838 |
5.40 |
| 2026-06-20 00:00 |
02:45:24.22 |
+14:20:52.0 |
HIP 12838 |
8.46 |
| 2026-06-20 12:00 |
02:46:03.07 |
+14:23:59.0 |
HIP 12838 |
17.62 |
| 2026-06-21 00:00 |
02:46:41.91 |
+14:27:05.5 |
HIP 12838 |
27.30 |
| 2026-06-21 12:00 |
02:47:20.74 |
+14:30:11.4 |
HIP 13122 |
21.85 |
| 2026-06-22 00:00 |
02:47:59.57 |
+14:33:16.8 |
HIP 13122 |
11.96 |