C/2011 L6 (Boattini)
| Parameter |
Value |
| Designation |
C/2011 L6 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-01-22T18:57:09.518400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:52Z |
| Obs used |
56 |
| NEO |
- |
| M1 |
13.200 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-08-20.0000000 |
| e |
1.00373776 |
| q (au) |
6.787629 |
| a (au) |
-1815.962524 |
| i (deg) |
171.456247 |
| Ω (om, deg) |
214.482658 |
| ω (w, deg) |
331.598726 |
| M (ma, deg) |
0.002665 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.044 + 3.303\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.044 |
| n |
3.303 |
| gf |
1.000 |
| gb |
-0.951 |
| 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) |
| 2026-02-03 00:00 |
08:18:58.86 |
+28:40:13.6 |
HIP 40676 |
26.37 |
| 2026-02-03 12:00 |
08:18:53.61 |
+28:40:27.4 |
HIP 40676 |
25.75 |
| 2026-02-04 00:00 |
08:18:48.38 |
+28:40:41.1 |
HIP 40676 |
25.17 |
| 2026-02-04 12:00 |
08:18:43.15 |
+28:40:54.6 |
HIP 40676 |
24.64 |
| 2026-02-05 00:00 |
08:18:37.93 |
+28:41:08.0 |
HIP 40676 |
24.16 |
| 2026-02-05 12:00 |
08:18:32.73 |
+28:41:21.3 |
HIP 40676 |
23.73 |
| 2026-02-06 00:00 |
08:18:27.53 |
+28:41:34.4 |
HIP 40676 |
23.35 |
| 2026-02-06 12:00 |
08:18:22.35 |
+28:41:47.5 |
HIP 40676 |
23.02 |
| 2026-02-07 00:00 |
08:18:17.18 |
+28:42:00.3 |
HIP 40676 |
22.75 |
| 2026-02-07 12:00 |
08:18:12.02 |
+28:42:13.1 |
HIP 40676 |
22.54 |
| 2026-02-08 00:00 |
08:18:06.87 |
+28:42:25.7 |
HIP 40676 |
22.38 |
| 2026-02-08 12:00 |
08:18:01.74 |
+28:42:38.2 |
HIP 40676 |
22.29 |
| 2026-02-09 00:00 |
08:17:56.62 |
+28:42:50.5 |
HIP 40676 |
22.25 |
| 2026-02-09 12:00 |
08:17:51.51 |
+28:43:02.7 |
HIP 40676 |
22.28 |
| 2026-02-10 00:00 |
08:17:46.42 |
+28:43:14.8 |
HIP 40676 |
22.36 |
| 2026-02-10 12:00 |
08:17:41.34 |
+28:43:26.7 |
HIP 40676 |
22.51 |
| 2026-02-11 00:00 |
08:17:36.28 |
+28:43:38.5 |
HIP 40676 |
22.71 |
| 2026-02-11 12:00 |
08:17:31.23 |
+28:43:50.2 |
HIP 40676 |
22.96 |
| 2026-02-12 00:00 |
08:17:26.20 |
+28:44:01.7 |
HIP 40676 |
23.27 |
| 2026-02-12 12:00 |
08:17:21.18 |
+28:44:13.1 |
HIP 40676 |
23.62 |
| 2026-02-13 00:00 |
08:17:16.18 |
+28:44:24.3 |
HIP 40676 |
24.02 |
| 2026-02-13 12:00 |
08:17:11.20 |
+28:44:35.4 |
HIP 40676 |
24.47 |
| 2026-02-14 00:00 |
08:17:06.23 |
+28:44:46.3 |
HIP 40432 |
23.61 |
| 2026-02-14 12:00 |
08:17:01.29 |
+28:44:57.1 |
HIP 40432 |
22.51 |
| 2026-02-15 00:00 |
08:16:56.36 |
+28:45:07.8 |
HIP 40432 |
21.42 |
| 2026-02-15 12:00 |
08:16:51.45 |
+28:45:18.3 |
HIP 40432 |
20.33 |
| 2026-02-16 00:00 |
08:16:46.55 |
+28:45:28.7 |
HIP 40432 |
19.25 |
| 2026-02-16 12:00 |
08:16:41.68 |
+28:45:38.9 |
HIP 40432 |
18.17 |
| 2026-02-17 00:00 |
08:16:36.83 |
+28:45:48.9 |
HIP 40432 |
17.10 |
| 2026-02-17 12:00 |
08:16:31.99 |
+28:45:58.9 |
HIP 40432 |
16.03 |
| 2026-02-18 00:00 |
08:16:27.18 |
+28:46:08.6 |
HIP 40432 |
14.97 |
| 2026-02-18 12:00 |
08:16:22.39 |
+28:46:18.3 |
HIP 40432 |
13.92 |
| 2026-02-19 00:00 |
08:16:17.62 |
+28:46:27.7 |
HIP 40432 |
12.87 |
| 2026-02-19 12:00 |
08:16:12.86 |
+28:46:37.1 |
HIP 40432 |
11.83 |
| 2026-02-20 00:00 |
08:16:08.14 |
+28:46:46.3 |
HIP 40432 |
10.79 |
| 2026-02-20 12:00 |
08:16:03.43 |
+28:46:55.3 |
HIP 40432 |
9.77 |
| 2026-02-21 00:00 |
08:15:58.75 |
+28:47:04.2 |
HIP 40432 |
8.75 |
| 2026-02-21 12:00 |
08:15:54.08 |
+28:47:12.9 |
HIP 40432 |
7.74 |
| 2026-02-22 00:00 |
08:15:49.45 |
+28:47:21.5 |
HIP 40432 |
6.75 |
| 2026-02-22 12:00 |
08:15:44.83 |
+28:47:29.9 |
HIP 40432 |
5.78 |
| 2026-02-23 00:00 |
08:15:40.24 |
+28:47:38.2 |
HIP 40432 |
4.83 |
| 2026-02-23 12:00 |
08:15:35.67 |
+28:47:46.3 |
HIP 40432 |
3.92 |
| 2026-02-24 00:00 |
08:15:31.13 |
+28:47:54.2 |
HIP 40432 |
3.07 |