| 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 |
0.998 |
| gb |
-0.664 |
| k |
0.800 |
| δ90 |
9.998 |
| 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 |
15:07:13.87 |
-23:13:51.7 |
HIP 73900 |
15.35 |
| 2026-07-29 12:00 |
15:07:12.61 |
-23:13:48.7 |
HIP 73900 |
15.10 |
| 2026-07-30 00:00 |
15:07:11.44 |
-23:13:46.1 |
HIP 73900 |
14.87 |
| 2026-07-30 12:00 |
15:07:10.38 |
-23:13:43.8 |
HIP 73900 |
14.66 |
| 2026-07-31 00:00 |
15:07:09.41 |
-23:13:41.8 |
HIP 73900 |
14.47 |
| 2026-07-31 12:00 |
15:07:08.54 |
-23:13:40.2 |
HIP 73900 |
14.29 |
| 2026-08-01 00:00 |
15:07:07.76 |
-23:13:38.9 |
HIP 73900 |
14.14 |
| 2026-08-01 12:00 |
15:07:07.08 |
-23:13:37.9 |
HIP 73900 |
14.00 |
| 2026-08-02 00:00 |
15:07:06.50 |
-23:13:37.3 |
HIP 73900 |
13.88 |
| 2026-08-02 12:00 |
15:07:06.01 |
-23:13:37.1 |
HIP 73900 |
13.78 |
| 2026-08-03 00:00 |
15:07:05.62 |
-23:13:37.2 |
HIP 73900 |
13.70 |
| 2026-08-03 12:00 |
15:07:05.32 |
-23:13:37.6 |
HIP 73900 |
13.64 |
| 2026-08-04 00:00 |
15:07:05.12 |
-23:13:38.5 |
HIP 73900 |
13.59 |
| 2026-08-04 12:00 |
15:07:05.02 |
-23:13:39.6 |
HIP 73900 |
13.56 |
| 2026-08-05 00:00 |
15:07:05.01 |
-23:13:41.1 |
HIP 73900 |
13.55 |
| 2026-08-05 12:00 |
15:07:05.10 |
-23:13:43.0 |
HIP 73900 |
13.55 |
| 2026-08-06 00:00 |
15:07:05.29 |
-23:13:45.2 |
HIP 73900 |
13.58 |
| 2026-08-06 12:00 |
15:07:05.57 |
-23:13:47.8 |
HIP 73900 |
13.62 |
| 2026-08-07 00:00 |
15:07:05.95 |
-23:13:50.7 |
HIP 73900 |
13.68 |
| 2026-08-07 12:00 |
15:07:06.42 |
-23:13:54.0 |
HIP 73900 |
13.76 |
| 2026-08-08 00:00 |
15:07:06.99 |
-23:13:57.7 |
HIP 73900 |
13.85 |
| 2026-08-08 12:00 |
15:07:07.66 |
-23:14:01.7 |
HIP 73900 |
13.97 |
| 2026-08-09 00:00 |
15:07:08.42 |
-23:14:06.1 |
HIP 73900 |
14.10 |
| 2026-08-09 12:00 |
15:07:09.28 |
-23:14:10.8 |
HIP 73900 |
14.26 |
| 2026-08-10 00:00 |
15:07:10.24 |
-23:14:15.9 |
HIP 73900 |
14.43 |
| 2026-08-10 12:00 |
15:07:11.29 |
-23:14:21.4 |
HIP 73900 |
14.63 |
| 2026-08-11 00:00 |
15:07:12.43 |
-23:14:27.2 |
HIP 73900 |
14.84 |
| 2026-08-11 12:00 |
15:07:13.68 |
-23:14:33.4 |
HIP 73900 |
15.08 |
| 2026-08-12 00:00 |
15:07:15.01 |
-23:14:40.0 |
HIP 73900 |
15.33 |
| 2026-08-12 12:00 |
15:07:16.45 |
-23:14:46.9 |
HIP 73900 |
15.61 |
| 2026-08-13 00:00 |
15:07:17.98 |
-23:14:54.2 |
HIP 73900 |
15.91 |
| 2026-08-13 12:00 |
15:07:19.60 |
-23:15:01.9 |
HIP 73900 |
16.24 |
| 2026-08-14 00:00 |
15:07:21.32 |
-23:15:09.9 |
HIP 73900 |
16.58 |
| 2026-08-14 12:00 |
15:07:23.13 |
-23:15:18.4 |
HIP 73900 |
16.95 |
| 2026-08-15 00:00 |
15:07:25.04 |
-23:15:27.1 |
HIP 73900 |
17.34 |
| 2026-08-15 12:00 |
15:07:27.04 |
-23:15:36.3 |
HIP 73900 |
17.76 |
| 2026-08-16 00:00 |
15:07:29.14 |
-23:15:45.8 |
HIP 73900 |
18.20 |
| 2026-08-16 12:00 |
15:07:31.33 |
-23:15:55.7 |
HIP 73900 |
18.66 |
| 2026-08-17 00:00 |
15:07:33.61 |
-23:16:05.9 |
HIP 73900 |
19.14 |
| 2026-08-17 12:00 |
15:07:35.99 |
-23:16:16.5 |
HIP 73900 |
19.65 |
| 2026-08-18 00:00 |
15:07:38.46 |
-23:16:27.5 |
HIP 73900 |
20.19 |
| 2026-08-18 12:00 |
15:07:41.02 |
-23:16:38.8 |
HIP 73900 |
20.74 |
| 2026-08-19 00:00 |
15:07:43.67 |
-23:16:50.6 |
HIP 74119 |
20.48 |