| 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
$$
M_a = (11.410 + 2.155\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.410 |
| n |
2.155 |
| gf |
0.999 |
| gb |
-0.859 |
| 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) |
| 2026-09-25 00:00 |
08:23:32.95 |
+27:58:47.1 |
HIP 41071 |
29.09 |
| 2026-09-25 12:00 |
08:23:34.58 |
+27:58:49.4 |
HIP 41071 |
29.25 |
| 2026-09-26 00:00 |
08:23:36.18 |
+27:58:52.0 |
HIP 41071 |
29.41 |
| 2026-09-26 12:00 |
08:23:37.75 |
+27:58:54.6 |
HIP 41071 |
29.58 |
| 2026-09-27 00:00 |
08:23:39.30 |
+27:58:57.4 |
HIP 41071 |
29.75 |
| 2026-09-27 12:00 |
08:23:40.81 |
+27:59:00.4 |
HIP 41071 |
29.93 |
| 2026-09-28 00:00 |
08:23:42.28 |
+27:59:03.4 |
HIP 41071 |
30.10 |
| 2026-09-28 12:00 |
08:23:43.73 |
+27:59:06.6 |
HIP 41071 |
30.28 |
| 2026-09-29 00:00 |
08:23:45.15 |
+27:59:10.0 |
HIP 41071 |
30.46 |
| 2026-09-29 12:00 |
08:23:46.53 |
+27:59:13.5 |
HIP 41071 |
30.64 |
| 2026-09-30 00:00 |
08:23:47.88 |
+27:59:17.1 |
HIP 41071 |
30.82 |
| 2026-09-30 12:00 |
08:23:49.20 |
+27:59:20.8 |
HIP 41071 |
31.00 |
| 2026-10-01 00:00 |
08:23:50.49 |
+27:59:24.7 |
HIP 41071 |
31.19 |
| 2026-10-01 12:00 |
08:23:51.75 |
+27:59:28.8 |
HIP 41071 |
31.37 |
| 2026-10-02 00:00 |
08:23:52.97 |
+27:59:32.9 |
HIP 41071 |
31.55 |
| 2026-10-02 12:00 |
08:23:54.16 |
+27:59:37.2 |
HIP 41071 |
31.74 |
| 2026-10-03 00:00 |
08:23:55.32 |
+27:59:41.7 |
HIP 41071 |
31.92 |
| 2026-10-03 12:00 |
08:23:56.44 |
+27:59:46.3 |
HIP 41071 |
32.11 |
| 2026-10-04 00:00 |
08:23:57.54 |
+27:59:51.0 |
HIP 41071 |
32.29 |
| 2026-10-04 12:00 |
08:23:58.59 |
+27:59:55.8 |
HIP 41071 |
32.47 |
| 2026-10-05 00:00 |
08:23:59.62 |
+28:00:00.8 |
HIP 41071 |
32.65 |
| 2026-10-05 12:00 |
08:24:00.61 |
+28:00:06.0 |
HIP 41071 |
32.84 |
| 2026-10-06 00:00 |
08:24:01.56 |
+28:00:11.2 |
HIP 41377 |
32.94 |
| 2026-10-06 12:00 |
08:24:02.49 |
+28:00:16.7 |
HIP 41377 |
32.76 |
| 2026-10-07 00:00 |
08:24:03.38 |
+28:00:22.2 |
HIP 41377 |
32.58 |
| 2026-10-07 12:00 |
08:24:04.23 |
+28:00:27.9 |
HIP 41377 |
32.42 |
| 2026-10-08 00:00 |
08:24:05.05 |
+28:00:33.7 |
HIP 41377 |
32.26 |
| 2026-10-08 12:00 |
08:24:05.83 |
+28:00:39.7 |
HIP 41377 |
32.11 |
| 2026-10-09 00:00 |
08:24:06.58 |
+28:00:45.8 |
HIP 41377 |
31.98 |
| 2026-10-09 12:00 |
08:24:07.30 |
+28:00:52.0 |
HIP 41377 |
31.84 |
| 2026-10-10 00:00 |
08:24:07.98 |
+28:00:58.4 |
HIP 41377 |
31.72 |
| 2026-10-10 12:00 |
08:24:08.62 |
+28:01:04.9 |
HIP 41377 |
31.61 |
| 2026-10-11 00:00 |
08:24:09.23 |
+28:01:11.6 |
HIP 41377 |
31.51 |
| 2026-10-11 12:00 |
08:24:09.80 |
+28:01:18.4 |
HIP 41377 |
31.41 |
| 2026-10-12 00:00 |
08:24:10.34 |
+28:01:25.3 |
HIP 41377 |
31.32 |
| 2026-10-12 12:00 |
08:24:10.84 |
+28:01:32.4 |
HIP 41377 |
31.25 |
| 2026-10-13 00:00 |
08:24:11.30 |
+28:01:39.6 |
HIP 41377 |
31.18 |
| 2026-10-13 12:00 |
08:24:11.73 |
+28:01:46.9 |
HIP 41377 |
31.12 |
| 2026-10-14 00:00 |
08:24:12.13 |
+28:01:54.4 |
HIP 41377 |
31.07 |
| 2026-10-14 12:00 |
08:24:12.48 |
+28:02:02.0 |
HIP 41377 |
31.02 |
| 2026-10-15 00:00 |
08:24:12.80 |
+28:02:09.8 |
HIP 41377 |
30.99 |
| 2026-10-15 12:00 |
08:24:13.09 |
+28:02:17.7 |
HIP 41377 |
30.97 |
| 2026-10-16 00:00 |
08:24:13.33 |
+28:02:25.7 |
HIP 41377 |
30.95 |