| Parameter |
Value |
| Designation |
C/2008 S3 (Boattini) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-06-07T00:27:12.735360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:23Z |
| Obs used |
1909 |
| NEO |
- |
| M1 |
8.300 |
| K1 |
6.000 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2011-04-19.0000000 |
| e |
1.00107749 |
| q (au) |
8.017919 |
| a (au) |
-7441.315951 |
| i (deg) |
162.702798 |
| Ω (om, deg) |
54.938054 |
| ω (w, deg) |
39.937767 |
| M (ma, deg) |
-0.000075 |
Magnitude
Scatter + Global Linear
$$
M_a = (5.795 + 3.046\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
5.795 |
| n |
3.046 |
| gf |
1.000 |
| gb |
-0.935 |
| 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) |
| 2026-07-29 00:00 |
17:04:07.79 |
-15:40:48.6 |
HIP 83479 |
13.02 |
| 2026-07-29 12:00 |
17:04:04.38 |
-15:40:52.3 |
HIP 83479 |
12.56 |
| 2026-07-30 00:00 |
17:04:00.99 |
-15:40:56.0 |
HIP 83479 |
12.14 |
| 2026-07-30 12:00 |
17:03:57.63 |
-15:40:59.8 |
HIP 83479 |
11.77 |
| 2026-07-31 00:00 |
17:03:54.31 |
-15:41:03.7 |
HIP 83479 |
11.44 |
| 2026-07-31 12:00 |
17:03:51.01 |
-15:41:07.7 |
HIP 83479 |
11.16 |
| 2026-08-01 00:00 |
17:03:47.74 |
-15:41:11.7 |
HIP 83479 |
10.93 |
| 2026-08-01 12:00 |
17:03:44.51 |
-15:41:15.8 |
HIP 83479 |
10.76 |
| 2026-08-02 00:00 |
17:03:41.30 |
-15:41:20.0 |
HIP 83479 |
10.63 |
| 2026-08-02 12:00 |
17:03:38.13 |
-15:41:24.3 |
HIP 83479 |
10.57 |
| 2026-08-03 00:00 |
17:03:34.98 |
-15:41:28.6 |
HIP 83479 |
10.55 |
| 2026-08-03 12:00 |
17:03:31.87 |
-15:41:33.1 |
HIP 83479 |
10.59 |
| 2026-08-04 00:00 |
17:03:28.79 |
-15:41:37.5 |
HIP 83479 |
10.68 |
| 2026-08-04 12:00 |
17:03:25.74 |
-15:41:42.1 |
HIP 83479 |
10.81 |
| 2026-08-05 00:00 |
17:03:22.72 |
-15:41:46.7 |
HIP 83479 |
10.99 |
| 2026-08-05 12:00 |
17:03:19.73 |
-15:41:51.5 |
HIP 83479 |
11.21 |
| 2026-08-06 00:00 |
17:03:16.78 |
-15:41:56.2 |
HIP 83479 |
11.46 |
| 2026-08-06 12:00 |
17:03:13.86 |
-15:42:01.1 |
HIP 83479 |
11.75 |
| 2026-08-07 00:00 |
17:03:10.97 |
-15:42:06.0 |
HIP 83479 |
12.07 |
| 2026-08-07 12:00 |
17:03:08.11 |
-15:42:11.1 |
HIP 83479 |
12.41 |
| 2026-08-08 00:00 |
17:03:05.28 |
-15:42:16.1 |
HIP 83479 |
12.78 |
| 2026-08-08 12:00 |
17:03:02.49 |
-15:42:21.3 |
HIP 83479 |
13.16 |
| 2026-08-09 00:00 |
17:02:59.73 |
-15:42:26.5 |
HIP 83479 |
13.56 |
| 2026-08-09 12:00 |
17:02:57.00 |
-15:42:31.8 |
HIP 83479 |
13.98 |
| 2026-08-10 00:00 |
17:02:54.31 |
-15:42:37.2 |
HIP 83479 |
14.41 |
| 2026-08-10 12:00 |
17:02:51.65 |
-15:42:42.6 |
HIP 83479 |
14.84 |
| 2026-08-11 00:00 |
17:02:49.02 |
-15:42:48.1 |
HIP 83479 |
15.29 |
| 2026-08-11 12:00 |
17:02:46.43 |
-15:42:53.7 |
HIP 83479 |
15.74 |
| 2026-08-12 00:00 |
17:02:43.87 |
-15:42:59.4 |
HIP 83479 |
16.19 |
| 2026-08-12 12:00 |
17:02:41.35 |
-15:43:05.1 |
HIP 83479 |
16.65 |
| 2026-08-13 00:00 |
17:02:38.86 |
-15:43:10.9 |
HIP 83479 |
17.11 |
| 2026-08-13 12:00 |
17:02:36.40 |
-15:43:16.8 |
HIP 83479 |
17.57 |
| 2026-08-14 00:00 |
17:02:33.98 |
-15:43:22.7 |
HIP 83479 |
18.03 |
| 2026-08-14 12:00 |
17:02:31.59 |
-15:43:28.8 |
HIP 83479 |
18.49 |
| 2026-08-15 00:00 |
17:02:29.24 |
-15:43:34.8 |
HIP 83479 |
18.95 |
| 2026-08-15 12:00 |
17:02:26.92 |
-15:43:41.0 |
HIP 83479 |
19.41 |
| 2026-08-16 00:00 |
17:02:24.64 |
-15:43:47.2 |
HIP 83479 |
19.86 |
| 2026-08-16 12:00 |
17:02:22.39 |
-15:43:53.5 |
HIP 83479 |
20.32 |
| 2026-08-17 00:00 |
17:02:20.18 |
-15:43:59.8 |
HIP 83479 |
20.76 |
| 2026-08-17 12:00 |
17:02:18.00 |
-15:44:06.2 |
HIP 83479 |
21.21 |
| 2026-08-18 00:00 |
17:02:15.86 |
-15:44:12.7 |
HIP 83479 |
21.65 |
| 2026-08-18 12:00 |
17:02:13.75 |
-15:44:19.3 |
HIP 83242 |
21.35 |
| 2026-08-19 00:00 |
17:02:11.68 |
-15:44:25.9 |
HIP 83242 |
20.88 |