340P/Boattini
| Parameter |
Value |
| Designation |
340P/Boattini |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-02-27T00:31:11.251200Z |
| Orbit solution date (soln_date, UTC) |
2021-07-06T16:00:11Z |
| Obs used |
289 |
| NEO |
- |
| M1 |
15.200 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-11-10.0000000 |
| e |
0.28087305 |
| q (au) |
3.047158 |
| a (au) |
4.237302 |
| i (deg) |
2.082087 |
| Ω (om, deg) |
291.827550 |
| ω (w, deg) |
36.019217 |
| M (ma, deg) |
111.526354 |
Magnitude
Scatter + Global Linear
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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
Finding Chart
Ephemeris
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
23:18:37.48 |
-02:45:12.7 |
HIP 115037 |
19.30 |
| 2026-02-03 12:00 |
23:19:17.86 |
-02:40:57.3 |
HIP 115294 |
28.25 |
| 2026-02-04 00:00 |
23:19:58.28 |
-02:36:41.6 |
HIP 115294 |
17.31 |
| 2026-02-04 12:00 |
23:20:38.73 |
-02:32:25.4 |
HIP 115294 |
6.44 |
| 2026-02-05 00:00 |
23:21:19.21 |
-02:28:08.8 |
HIP 115294 |
4.88 |
| 2026-02-05 12:00 |
23:21:59.72 |
-02:23:51.8 |
HIP 115294 |
15.73 |
| 2026-02-06 00:00 |
23:22:40.26 |
-02:19:34.4 |
HIP 115294 |
26.71 |
| 2026-02-06 12:00 |
23:23:20.83 |
-02:15:16.6 |
HIP 115595 |
27.47 |
| 2026-02-07 00:00 |
23:24:01.43 |
-02:10:58.5 |
HIP 115595 |
16.63 |
| 2026-02-07 12:00 |
23:24:42.06 |
-02:06:39.9 |
HIP 115595 |
6.43 |
| 2026-02-08 00:00 |
23:25:22.72 |
-02:02:21.0 |
HIP 115595 |
7.03 |
| 2026-02-08 12:00 |
23:26:03.41 |
-01:58:01.7 |
HIP 115595 |
17.37 |
| 2026-02-09 00:00 |
23:26:44.13 |
-01:53:42.0 |
HIP 115595 |
28.25 |
| 2026-02-09 12:00 |
23:27:24.87 |
-01:49:22.0 |
HIP 115945 |
30.57 |
| 2026-02-10 00:00 |
23:28:05.64 |
-01:45:01.6 |
HIP 115945 |
20.47 |
| 2026-02-10 12:00 |
23:28:46.44 |
-01:40:40.9 |
HIP 115945 |
12.20 |
| 2026-02-11 00:00 |
23:29:27.27 |
-01:36:19.8 |
HIP 115909 |
10.26 |
| 2026-02-11 12:00 |
23:30:08.12 |
-01:31:58.4 |
HIP 115909 |
16.92 |
| 2026-02-12 00:00 |
23:30:48.99 |
-01:27:36.6 |
HIP 115909 |
26.72 |
| 2026-02-12 12:00 |
23:31:29.89 |
-01:23:14.6 |
HIP 116146 |
19.36 |
| 2026-02-13 00:00 |
23:32:10.82 |
-01:18:52.2 |
HIP 116146 |
14.11 |
| 2026-02-13 12:00 |
23:32:51.77 |
-01:14:29.5 |
HIP 116146 |
16.45 |
| 2026-02-14 00:00 |
23:33:32.74 |
-01:10:06.5 |
HIP 116323 |
10.22 |
| 2026-02-14 12:00 |
23:34:13.74 |
-01:05:43.2 |
HIP 116323 |
9.21 |
| 2026-02-15 00:00 |
23:34:54.75 |
-01:01:19.5 |
HIP 116323 |
17.72 |
| 2026-02-15 12:00 |
23:35:35.79 |
-00:56:55.6 |
HIP 116323 |
28.15 |
| 2026-02-16 00:00 |
23:36:16.86 |
-00:52:31.5 |
HIP 116643 |
29.75 |
| 2026-02-16 12:00 |
23:36:57.94 |
-00:48:07.0 |
HIP 116643 |
19.89 |
| 2026-02-17 00:00 |
23:37:39.04 |
-00:43:42.3 |
HIP 116643 |
12.47 |
| 2026-02-17 12:00 |
23:38:20.16 |
-00:39:17.3 |
HIP 116643 |
12.87 |
| 2026-02-18 00:00 |
23:39:01.30 |
-00:34:52.1 |
HIP 116756 |
14.49 |
| 2026-02-18 12:00 |
23:39:42.46 |
-00:30:26.6 |
HIP 116756 |
14.01 |
| 2026-02-19 00:00 |
23:40:23.64 |
-00:26:00.8 |
HIP 116826 |
5.62 |
| 2026-02-19 12:00 |
23:41:04.84 |
-00:21:34.9 |
HIP 116826 |
5.74 |
| 2026-02-20 00:00 |
23:41:46.05 |
-00:17:08.7 |
HIP 116826 |
16.91 |
| 2026-02-20 12:00 |
23:42:27.28 |
-00:12:42.2 |
HIP 117016 |
13.08 |
| 2026-02-21 00:00 |
23:43:08.52 |
-00:08:15.6 |
HIP 117016 |
2.56 |
| 2026-02-21 12:00 |
23:43:49.79 |
-00:03:48.8 |
HIP 117016 |
9.71 |
| 2026-02-22 00:00 |
23:44:31.06 |
+00:00:38.3 |
HIP 117016 |
20.85 |
| 2026-02-22 12:00 |
23:45:12.35 |
+00:05:05.5 |
HIP 117215 |
15.99 |
| 2026-02-23 00:00 |
23:45:53.65 |
+00:09:32.9 |
HIP 117215 |
6.38 |
| 2026-02-23 12:00 |
23:46:34.97 |
+00:14:00.5 |
HIP 117215 |
8.88 |
| 2026-02-24 00:00 |
23:47:16.30 |
+00:18:28.2 |
HIP 117260 |
16.92 |