| Parameter |
Value |
| Designation |
P/2008 O3 (Boattini) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-06-03T01:59:52.333440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:21Z |
| Obs used |
54 |
| NEO |
- |
| M1 |
5.500 |
| K1 |
28.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2008-08-28.0000000 |
| e |
0.69495599 |
| q (au) |
2.497269 |
| a (au) |
8.186587 |
| i (deg) |
32.269872 |
| Ω (om, deg) |
47.572666 |
| ω (w, deg) |
340.983593 |
| M (ma, deg) |
3.615161 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.607 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.607 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.664 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
15:40:05.72 |
-24:08:17.2 |
HIP 76812 |
16.58 |
| 2026-03-26 12:00 |
15:40:00.23 |
-24:08:27.2 |
HIP 76812 |
17.43 |
| 2026-03-27 00:00 |
15:39:54.65 |
-24:08:37.0 |
HIP 76812 |
18.34 |
| 2026-03-27 12:00 |
15:39:48.98 |
-24:08:46.4 |
HIP 76812 |
19.32 |
| 2026-03-28 00:00 |
15:39:43.22 |
-24:08:55.4 |
HIP 76812 |
20.36 |
| 2026-03-28 12:00 |
15:39:37.38 |
-24:09:04.2 |
HIP 76689 |
21.03 |
| 2026-03-29 00:00 |
15:39:31.45 |
-24:09:12.6 |
HIP 76689 |
21.19 |
| 2026-03-29 12:00 |
15:39:25.43 |
-24:09:20.7 |
HIP 76689 |
21.43 |
| 2026-03-30 00:00 |
15:39:19.32 |
-24:09:28.4 |
HIP 76689 |
21.76 |
| 2026-03-30 12:00 |
15:39:13.13 |
-24:09:35.9 |
HIP 76689 |
22.17 |
| 2026-03-31 00:00 |
15:39:06.85 |
-24:09:43.0 |
HIP 76689 |
22.66 |
| 2026-03-31 12:00 |
15:39:00.49 |
-24:09:49.7 |
HIP 76689 |
23.24 |
| 2026-04-01 00:00 |
15:38:54.04 |
-24:09:56.2 |
HIP 76689 |
23.89 |
| 2026-04-01 12:00 |
15:38:47.51 |
-24:10:02.3 |
HIP 76689 |
24.61 |
| 2026-04-02 00:00 |
15:38:40.90 |
-24:10:08.1 |
HIP 76689 |
25.41 |
| 2026-04-02 12:00 |
15:38:34.20 |
-24:10:13.5 |
HIP 76689 |
26.28 |
| 2026-04-03 00:00 |
15:38:27.42 |
-24:10:18.6 |
HIP 76689 |
27.21 |
| 2026-04-03 12:00 |
15:38:20.56 |
-24:10:23.4 |
HIP 76430 |
26.29 |
| 2026-04-04 00:00 |
15:38:13.62 |
-24:10:27.9 |
HIP 76430 |
24.88 |
| 2026-04-04 12:00 |
15:38:06.59 |
-24:10:32.0 |
HIP 76430 |
23.48 |
| 2026-04-05 00:00 |
15:37:59.49 |
-24:10:35.8 |
HIP 76430 |
22.08 |
| 2026-04-05 12:00 |
15:37:52.31 |
-24:10:39.3 |
HIP 76430 |
20.70 |
| 2026-04-06 00:00 |
15:37:45.05 |
-24:10:42.4 |
HIP 76430 |
19.34 |
| 2026-04-06 12:00 |
15:37:37.71 |
-24:10:45.2 |
HIP 76430 |
18.01 |
| 2026-04-07 00:00 |
15:37:30.29 |
-24:10:47.7 |
HIP 76430 |
16.73 |
| 2026-04-07 12:00 |
15:37:22.80 |
-24:10:49.9 |
HIP 76430 |
15.52 |
| 2026-04-08 00:00 |
15:37:15.23 |
-24:10:51.7 |
HIP 76430 |
14.38 |
| 2026-04-08 12:00 |
15:37:07.59 |
-24:10:53.2 |
HIP 76430 |
13.36 |
| 2026-04-09 00:00 |
15:36:59.86 |
-24:10:54.3 |
HIP 76430 |
12.49 |
| 2026-04-09 12:00 |
15:36:52.07 |
-24:10:55.2 |
HIP 76430 |
11.81 |
| 2026-04-10 00:00 |
15:36:44.20 |
-24:10:55.7 |
HIP 76430 |
11.37 |
| 2026-04-10 12:00 |
15:36:36.26 |
-24:10:55.8 |
HIP 76430 |
11.18 |
| 2026-04-11 00:00 |
15:36:28.25 |
-24:10:55.7 |
HIP 76354 |
11.01 |
| 2026-04-11 12:00 |
15:36:20.16 |
-24:10:55.2 |
HIP 76354 |
9.23 |
| 2026-04-12 00:00 |
15:36:12.01 |
-24:10:54.4 |
HIP 76354 |
7.47 |
| 2026-04-12 12:00 |
15:36:03.78 |
-24:10:53.2 |
HIP 76354 |
5.75 |
| 2026-04-13 00:00 |
15:35:55.49 |
-24:10:51.8 |
HIP 76354 |
4.15 |
| 2026-04-13 12:00 |
15:35:47.12 |
-24:10:50.0 |
HIP 76354 |
2.92 |
| 2026-04-14 00:00 |
15:35:38.69 |
-24:10:47.8 |
HIP 76354 |
2.66 |
| 2026-04-14 12:00 |
15:35:30.19 |
-24:10:45.4 |
HIP 76354 |
3.62 |
| 2026-04-15 00:00 |
15:35:21.63 |
-24:10:42.6 |
HIP 76354 |
5.17 |
| 2026-04-15 12:00 |
15:35:13.00 |
-24:10:39.5 |
HIP 76354 |
6.94 |
| 2026-04-16 00:00 |
15:35:04.31 |
-24:10:36.1 |
HIP 76354 |
8.81 |