| 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
$$
M_a = (11.833 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.833 |
| n |
2.000 |
| gf |
0.958 |
| gb |
-0.983 |
| k |
1.000 |
| δ90 |
9.614 |
| 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) |
| 2026-09-20 00:00 |
21:36:37.73 |
-13:00:50.8 |
HIP 106698 |
26.74 |
| 2026-09-20 12:00 |
21:36:34.94 |
-13:01:06.1 |
HIP 106698 |
26.53 |
| 2026-09-21 00:00 |
21:36:32.17 |
-13:01:21.3 |
HIP 106698 |
26.34 |
| 2026-09-21 12:00 |
21:36:29.41 |
-13:01:36.4 |
HIP 106698 |
26.17 |
| 2026-09-22 00:00 |
21:36:26.69 |
-13:01:51.3 |
HIP 106698 |
26.02 |
| 2026-09-22 12:00 |
21:36:23.98 |
-13:02:06.2 |
HIP 106698 |
25.89 |
| 2026-09-23 00:00 |
21:36:21.29 |
-13:02:20.9 |
HIP 106698 |
25.77 |
| 2026-09-23 12:00 |
21:36:18.63 |
-13:02:35.6 |
HIP 106698 |
25.68 |
| 2026-09-24 00:00 |
21:36:15.99 |
-13:02:50.1 |
HIP 106698 |
25.60 |
| 2026-09-24 12:00 |
21:36:13.38 |
-13:03:04.6 |
HIP 106698 |
25.54 |
| 2026-09-25 00:00 |
21:36:10.79 |
-13:03:18.9 |
HIP 106698 |
25.50 |
| 2026-09-25 12:00 |
21:36:08.22 |
-13:03:33.1 |
HIP 106698 |
25.48 |
| 2026-09-26 00:00 |
21:36:05.67 |
-13:03:47.2 |
HIP 106698 |
25.48 |
| 2026-09-26 12:00 |
21:36:03.15 |
-13:04:01.2 |
HIP 106698 |
25.49 |
| 2026-09-27 00:00 |
21:36:00.65 |
-13:04:15.1 |
HIP 106698 |
25.52 |
| 2026-09-27 12:00 |
21:35:58.18 |
-13:04:28.8 |
HIP 106698 |
25.56 |
| 2026-09-28 00:00 |
21:35:55.73 |
-13:04:42.5 |
HIP 106698 |
25.62 |
| 2026-09-28 12:00 |
21:35:53.30 |
-13:04:56.0 |
HIP 106698 |
25.69 |
| 2026-09-29 00:00 |
21:35:50.90 |
-13:05:09.4 |
HIP 106698 |
25.78 |
| 2026-09-29 12:00 |
21:35:48.53 |
-13:05:22.7 |
HIP 106698 |
25.88 |
| 2026-09-30 00:00 |
21:35:46.18 |
-13:05:35.9 |
HIP 106698 |
25.99 |
| 2026-09-30 12:00 |
21:35:43.86 |
-13:05:49.0 |
HIP 106698 |
26.12 |
| 2026-10-01 00:00 |
21:35:41.56 |
-13:06:01.9 |
HIP 106698 |
26.25 |
| 2026-10-01 12:00 |
21:35:39.29 |
-13:06:14.7 |
HIP 106698 |
26.40 |
| 2026-10-02 00:00 |
21:35:37.04 |
-13:06:27.4 |
HIP 106698 |
26.56 |
| 2026-10-02 12:00 |
21:35:34.82 |
-13:06:40.0 |
HIP 106698 |
26.73 |
| 2026-10-03 00:00 |
21:35:32.63 |
-13:06:52.4 |
HIP 106698 |
26.90 |
| 2026-10-03 12:00 |
21:35:30.46 |
-13:07:04.7 |
HIP 106698 |
27.09 |
| 2026-10-04 00:00 |
21:35:28.32 |
-13:07:16.9 |
HIP 106698 |
27.28 |
| 2026-10-04 12:00 |
21:35:26.21 |
-13:07:28.9 |
HIP 106497 |
27.41 |
| 2026-10-05 00:00 |
21:35:24.13 |
-13:07:40.9 |
HIP 106497 |
26.94 |
| 2026-10-05 12:00 |
21:35:22.07 |
-13:07:52.6 |
HIP 106497 |
26.48 |
| 2026-10-06 00:00 |
21:35:20.04 |
-13:08:04.3 |
HIP 106497 |
26.03 |
| 2026-10-06 12:00 |
21:35:18.04 |
-13:08:15.8 |
HIP 106497 |
25.59 |
| 2026-10-07 00:00 |
21:35:16.07 |
-13:08:27.2 |
HIP 106497 |
25.16 |
| 2026-10-07 12:00 |
21:35:14.13 |
-13:08:38.5 |
HIP 106497 |
24.73 |
| 2026-10-08 00:00 |
21:35:12.21 |
-13:08:49.6 |
HIP 106497 |
24.32 |
| 2026-10-08 12:00 |
21:35:10.32 |
-13:09:00.5 |
HIP 106497 |
23.91 |
| 2026-10-09 00:00 |
21:35:08.47 |
-13:09:11.4 |
HIP 106497 |
23.51 |
| 2026-10-09 12:00 |
21:35:06.64 |
-13:09:22.1 |
HIP 106497 |
23.13 |
| 2026-10-10 00:00 |
21:35:04.84 |
-13:09:32.6 |
HIP 106497 |
22.75 |
| 2026-10-10 12:00 |
21:35:03.07 |
-13:09:43.0 |
HIP 106497 |
22.38 |
| 2026-10-11 00:00 |
21:35:01.33 |
-13:09:53.3 |
HIP 106497 |
22.02 |