| 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) |
| 2026-05-12 00:00 |
08:10:37.75 |
+28:40:43.9 |
HIP 40192 |
27.30 |
| 2026-05-12 12:00 |
08:10:38.72 |
+28:40:32.7 |
HIP 40192 |
27.16 |
| 2026-05-13 00:00 |
08:10:39.73 |
+28:40:21.5 |
HIP 40192 |
27.01 |
| 2026-05-13 12:00 |
08:10:40.77 |
+28:40:10.2 |
HIP 40192 |
26.86 |
| 2026-05-14 00:00 |
08:10:41.84 |
+28:39:58.8 |
HIP 40192 |
26.70 |
| 2026-05-14 12:00 |
08:10:42.95 |
+28:39:47.4 |
HIP 40192 |
26.54 |
| 2026-05-15 00:00 |
08:10:44.09 |
+28:39:35.9 |
HIP 40192 |
26.37 |
| 2026-05-15 12:00 |
08:10:45.27 |
+28:39:24.4 |
HIP 40192 |
26.21 |
| 2026-05-16 00:00 |
08:10:46.48 |
+28:39:12.8 |
HIP 40192 |
26.03 |
| 2026-05-16 12:00 |
08:10:47.72 |
+28:39:01.1 |
HIP 40192 |
25.86 |
| 2026-05-17 00:00 |
08:10:48.99 |
+28:38:49.4 |
HIP 40192 |
25.68 |
| 2026-05-17 12:00 |
08:10:50.30 |
+28:38:37.6 |
HIP 40192 |
25.50 |
| 2026-05-18 00:00 |
08:10:51.64 |
+28:38:25.7 |
HIP 40192 |
25.32 |
| 2026-05-18 12:00 |
08:10:53.02 |
+28:38:13.8 |
HIP 40192 |
25.13 |
| 2026-05-19 00:00 |
08:10:54.42 |
+28:38:01.9 |
HIP 40192 |
24.94 |
| 2026-05-19 12:00 |
08:10:55.86 |
+28:37:49.9 |
HIP 40192 |
24.75 |
| 2026-05-20 00:00 |
08:10:57.33 |
+28:37:37.8 |
HIP 40192 |
24.56 |
| 2026-05-20 12:00 |
08:10:58.83 |
+28:37:25.7 |
HIP 40192 |
24.37 |
| 2026-05-21 00:00 |
08:11:00.36 |
+28:37:13.5 |
HIP 40192 |
24.18 |
| 2026-05-21 12:00 |
08:11:01.93 |
+28:37:01.3 |
HIP 40192 |
23.98 |
| 2026-05-22 00:00 |
08:11:03.52 |
+28:36:49.1 |
HIP 40192 |
23.79 |
| 2026-05-22 12:00 |
08:11:05.15 |
+28:36:36.8 |
HIP 40192 |
23.59 |
| 2026-05-23 00:00 |
08:11:06.80 |
+28:36:24.4 |
HIP 40192 |
23.40 |
| 2026-05-23 12:00 |
08:11:08.49 |
+28:36:12.0 |
HIP 40192 |
23.21 |
| 2026-05-24 00:00 |
08:11:10.21 |
+28:35:59.6 |
HIP 40192 |
23.01 |
| 2026-05-24 12:00 |
08:11:11.96 |
+28:35:47.1 |
HIP 40192 |
22.82 |
| 2026-05-25 00:00 |
08:11:13.73 |
+28:35:34.5 |
HIP 40192 |
22.64 |
| 2026-05-25 12:00 |
08:11:15.54 |
+28:35:22.0 |
HIP 40192 |
22.45 |
| 2026-05-26 00:00 |
08:11:17.37 |
+28:35:09.4 |
HIP 40192 |
22.27 |
| 2026-05-26 12:00 |
08:11:19.24 |
+28:34:56.7 |
HIP 40192 |
22.09 |
| 2026-05-27 00:00 |
08:11:21.13 |
+28:34:44.0 |
HIP 40192 |
21.91 |
| 2026-05-27 12:00 |
08:11:23.06 |
+28:34:31.3 |
HIP 40192 |
21.74 |
| 2026-05-28 00:00 |
08:11:25.01 |
+28:34:18.5 |
HIP 40192 |
21.57 |
| 2026-05-28 12:00 |
08:11:26.99 |
+28:34:05.7 |
HIP 40192 |
21.41 |
| 2026-05-29 00:00 |
08:11:28.99 |
+28:33:52.9 |
HIP 40192 |
21.26 |
| 2026-05-29 12:00 |
08:11:31.03 |
+28:33:40.0 |
HIP 40192 |
21.11 |
| 2026-05-30 00:00 |
08:11:33.09 |
+28:33:27.1 |
HIP 40192 |
20.96 |
| 2026-05-30 12:00 |
08:11:35.18 |
+28:33:14.1 |
HIP 40192 |
20.83 |
| 2026-05-31 00:00 |
08:11:37.30 |
+28:33:01.2 |
HIP 40192 |
20.70 |
| 2026-05-31 12:00 |
08:11:39.44 |
+28:32:48.2 |
HIP 40192 |
20.59 |
| 2026-06-01 00:00 |
08:11:41.62 |
+28:32:35.1 |
HIP 40192 |
20.48 |
| 2026-06-01 12:00 |
08:11:43.81 |
+28:32:22.1 |
HIP 40192 |
20.38 |
| 2026-06-02 00:00 |
08:11:46.04 |
+28:32:09.0 |
HIP 40192 |
20.29 |