| Parameter |
Value |
| Designation |
C/2010 F3 (Scotti) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2010-08-04T12:52:37.418880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
135 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-07-07.0000000 |
| e |
0.91326388 |
| q (au) |
5.446686 |
| a (au) |
62.796057 |
| i (deg) |
4.647569 |
| Ω (om, deg) |
157.410153 |
| ω (w, deg) |
31.256514 |
| M (ma, deg) |
359.943479 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.844 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.844 |
| n |
2.000 |
| gf |
0.901 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
9.053 |
| 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 |
21:43:27.68 |
-12:27:01.0 |
HIP 107127 |
24.47 |
| 2026-03-26 12:00 |
21:43:31.09 |
-12:26:43.3 |
HIP 107127 |
25.06 |
| 2026-03-27 00:00 |
21:43:34.47 |
-12:26:25.7 |
HIP 107127 |
25.66 |
| 2026-03-27 12:00 |
21:43:37.84 |
-12:26:08.3 |
HIP 107127 |
26.27 |
| 2026-03-28 00:00 |
21:43:41.18 |
-12:25:50.9 |
HIP 107127 |
26.89 |
| 2026-03-28 12:00 |
21:43:44.49 |
-12:25:33.6 |
HIP 107127 |
27.53 |
| 2026-03-29 00:00 |
21:43:47.79 |
-12:25:16.5 |
HIP 107127 |
28.16 |
| 2026-03-29 12:00 |
21:43:51.06 |
-12:24:59.4 |
HIP 107127 |
28.81 |
| 2026-03-30 00:00 |
21:43:54.31 |
-12:24:42.5 |
HIP 107182 |
29.15 |
| 2026-03-30 12:00 |
21:43:57.54 |
-12:24:25.6 |
HIP 107182 |
29.46 |
| 2026-03-31 00:00 |
21:44:00.74 |
-12:24:08.9 |
HIP 107182 |
29.79 |
| 2026-03-31 12:00 |
21:44:03.92 |
-12:23:52.2 |
HIP 107412 |
29.94 |
| 2026-04-01 00:00 |
21:44:07.08 |
-12:23:35.7 |
HIP 107412 |
29.68 |
| 2026-04-01 12:00 |
21:44:10.21 |
-12:23:19.3 |
HIP 107412 |
29.43 |
| 2026-04-02 00:00 |
21:44:13.32 |
-12:23:03.0 |
HIP 107412 |
29.21 |
| 2026-04-02 12:00 |
21:44:16.40 |
-12:22:46.9 |
HIP 107412 |
29.01 |
| 2026-04-03 00:00 |
21:44:19.46 |
-12:22:30.8 |
HIP 107412 |
28.83 |
| 2026-04-03 12:00 |
21:44:22.50 |
-12:22:14.9 |
HIP 107412 |
28.68 |
| 2026-04-04 00:00 |
21:44:25.51 |
-12:21:59.0 |
HIP 107412 |
28.55 |
| 2026-04-04 12:00 |
21:44:28.49 |
-12:21:43.3 |
HIP 107412 |
28.43 |
| 2026-04-05 00:00 |
21:44:31.45 |
-12:21:27.7 |
HIP 107412 |
28.35 |
| 2026-04-05 12:00 |
21:44:34.39 |
-12:21:12.2 |
HIP 107412 |
28.28 |
| 2026-04-06 00:00 |
21:44:37.30 |
-12:20:56.9 |
HIP 107412 |
28.23 |
| 2026-04-06 12:00 |
21:44:40.18 |
-12:20:41.6 |
HIP 107412 |
28.20 |
| 2026-04-07 00:00 |
21:44:43.04 |
-12:20:26.5 |
HIP 107491 |
27.87 |
| 2026-04-07 12:00 |
21:44:45.87 |
-12:20:11.5 |
HIP 107491 |
27.44 |
| 2026-04-08 00:00 |
21:44:48.68 |
-12:19:56.7 |
HIP 107491 |
27.03 |
| 2026-04-08 12:00 |
21:44:51.46 |
-12:19:41.9 |
HIP 107491 |
26.63 |
| 2026-04-09 00:00 |
21:44:54.22 |
-12:19:27.3 |
HIP 107491 |
26.26 |
| 2026-04-09 12:00 |
21:44:56.94 |
-12:19:12.8 |
HIP 107491 |
25.90 |
| 2026-04-10 00:00 |
21:44:59.65 |
-12:18:58.5 |
HIP 107491 |
25.55 |
| 2026-04-10 12:00 |
21:45:02.32 |
-12:18:44.3 |
HIP 107491 |
25.23 |
| 2026-04-11 00:00 |
21:45:04.97 |
-12:18:30.2 |
HIP 107491 |
24.92 |
| 2026-04-11 12:00 |
21:45:07.59 |
-12:18:16.2 |
HIP 107491 |
24.64 |
| 2026-04-12 00:00 |
21:45:10.18 |
-12:18:02.3 |
HIP 107491 |
24.37 |
| 2026-04-12 12:00 |
21:45:12.74 |
-12:17:48.6 |
HIP 107491 |
24.12 |
| 2026-04-13 00:00 |
21:45:15.28 |
-12:17:35.1 |
HIP 107491 |
23.89 |
| 2026-04-13 12:00 |
21:45:17.79 |
-12:17:21.6 |
HIP 107491 |
23.67 |
| 2026-04-14 00:00 |
21:45:20.27 |
-12:17:08.4 |
HIP 107491 |
23.48 |
| 2026-04-14 12:00 |
21:45:22.72 |
-12:16:55.2 |
HIP 107491 |
23.30 |
| 2026-04-15 00:00 |
21:45:25.15 |
-12:16:42.2 |
HIP 107491 |
23.15 |
| 2026-04-15 12:00 |
21:45:27.55 |
-12:16:29.3 |
HIP 107491 |
23.01 |
| 2026-04-16 00:00 |
21:45:29.91 |
-12:16:16.5 |
HIP 107491 |
22.88 |