| 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) |
| 2026-05-12 00:00 |
01:32:28.94 |
+11:25:17.1 |
HIP 7184 |
27.69 |
| 2026-05-12 12:00 |
01:33:08.23 |
+11:29:09.5 |
HIP 7184 |
25.29 |
| 2026-05-13 00:00 |
01:33:47.49 |
+11:33:01.3 |
HIP 7397 |
24.08 |
| 2026-05-13 12:00 |
01:34:26.70 |
+11:36:52.5 |
HIP 7397 |
17.25 |
| 2026-05-14 00:00 |
01:35:05.87 |
+11:40:43.1 |
HIP 7397 |
15.15 |
| 2026-05-14 12:00 |
01:35:45.00 |
+11:44:33.2 |
HIP 7397 |
19.36 |
| 2026-05-15 00:00 |
01:36:24.08 |
+11:48:22.6 |
HIP 7575 |
20.12 |
| 2026-05-15 12:00 |
01:37:03.12 |
+11:52:11.5 |
HIP 7575 |
10.14 |
| 2026-05-16 00:00 |
01:37:42.12 |
+11:55:59.8 |
HIP 7575 |
3.53 |
| 2026-05-16 12:00 |
01:38:21.06 |
+11:59:47.5 |
HIP 7585 |
11.00 |
| 2026-05-17 00:00 |
01:38:59.97 |
+12:03:34.5 |
HIP 7585 |
19.38 |
| 2026-05-17 12:00 |
01:39:38.82 |
+12:07:21.0 |
HIP 7797 |
17.74 |
| 2026-05-18 00:00 |
01:40:17.63 |
+12:11:06.8 |
HIP 7797 |
18.42 |
| 2026-05-18 12:00 |
01:40:56.38 |
+12:14:52.1 |
HIP 7935 |
23.66 |
| 2026-05-19 00:00 |
01:41:35.09 |
+12:18:36.7 |
HIP 7935 |
22.35 |
| 2026-05-19 12:00 |
01:42:13.75 |
+12:22:20.7 |
HIP 8026 |
16.72 |
| 2026-05-20 00:00 |
01:42:52.36 |
+12:26:04.0 |
HIP 8026 |
8.38 |
| 2026-05-20 12:00 |
01:43:30.92 |
+12:29:46.7 |
HIP 8026 |
8.12 |
| 2026-05-21 00:00 |
01:44:09.43 |
+12:33:28.8 |
HIP 8026 |
16.31 |
| 2026-05-21 12:00 |
01:44:47.88 |
+12:37:10.3 |
HIP 8026 |
25.87 |
| 2026-05-22 00:00 |
01:45:26.28 |
+12:40:51.1 |
HIP 8275 |
23.93 |
| 2026-05-22 12:00 |
01:46:04.63 |
+12:44:31.2 |
HIP 8275 |
21.48 |
| 2026-05-23 00:00 |
01:46:42.92 |
+12:48:10.7 |
HIP 8335 |
15.43 |
| 2026-05-23 12:00 |
01:47:21.16 |
+12:51:49.6 |
HIP 8335 |
7.02 |
| 2026-05-24 00:00 |
01:47:59.35 |
+12:55:27.8 |
HIP 8335 |
7.80 |
| 2026-05-24 12:00 |
01:48:37.48 |
+12:59:05.4 |
HIP 8335 |
16.47 |
| 2026-05-25 00:00 |
01:49:15.56 |
+13:02:42.3 |
HIP 8342 |
25.71 |
| 2026-05-25 12:00 |
01:49:53.58 |
+13:06:18.5 |
HIP 8342 |
33.83 |
| 2026-05-26 00:00 |
01:50:31.54 |
+13:09:54.1 |
HIP 8703 |
26.19 |
| 2026-05-26 12:00 |
01:51:09.44 |
+13:13:29.0 |
HIP 8703 |
16.88 |
| 2026-05-27 00:00 |
01:51:47.29 |
+13:17:03.2 |
HIP 8703 |
8.94 |
| 2026-05-27 12:00 |
01:52:25.08 |
+13:20:36.8 |
HIP 8703 |
8.36 |
| 2026-05-28 00:00 |
01:53:02.82 |
+13:24:09.7 |
HIP 8703 |
15.93 |
| 2026-05-28 12:00 |
01:53:40.49 |
+13:27:42.0 |
HIP 8858 |
22.17 |
| 2026-05-29 00:00 |
01:54:18.10 |
+13:31:13.5 |
HIP 8916 |
15.86 |
| 2026-05-29 12:00 |
01:54:55.66 |
+13:34:44.4 |
HIP 8916 |
10.88 |
| 2026-05-30 00:00 |
01:55:33.15 |
+13:38:14.6 |
HIP 8916 |
13.27 |
| 2026-05-30 12:00 |
01:56:10.58 |
+13:41:44.2 |
HIP 9074 |
10.71 |
| 2026-05-31 00:00 |
01:56:47.95 |
+13:45:13.0 |
HIP 9074 |
8.84 |
| 2026-05-31 12:00 |
01:57:25.26 |
+13:48:41.2 |
HIP 9074 |
15.17 |
| 2026-06-01 00:00 |
01:58:02.51 |
+13:52:08.7 |
HIP 9180 |
15.35 |
| 2026-06-01 12:00 |
01:58:39.69 |
+13:55:35.4 |
HIP 9180 |
20.14 |
| 2026-06-02 00:00 |
01:59:16.81 |
+13:59:01.5 |
HIP 9180 |
27.59 |