| Parameter |
Value |
| Designation |
344P/Read |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-01-10T17:39:03.035520Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:48Z |
| Obs used |
535 |
| NEO |
- |
| M1 |
5.300 |
| K1 |
25.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2010-12-08.0000000 |
| e |
0.42197889 |
| q (au) |
2.824924 |
| a (au) |
4.887234 |
| i (deg) |
3.483249 |
| Ω (om, deg) |
273.290163 |
| ω (w, deg) |
140.373304 |
| M (ma, deg) |
163.497658 |
Magnitude
Scatter + Global Linear
$$
M_a = (15.246 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
15.246 |
| n |
2.000 |
| gf |
0.984 |
| gb |
-0.500 |
| k |
0.800 |
| δ90 |
1.997 |
| 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 |
22:03:14.48 |
-09:36:05.2 |
HIP 108780 |
25.29 |
| 2026-03-26 12:00 |
22:03:45.42 |
-09:33:00.7 |
HIP 108780 |
29.01 |
| 2026-03-27 00:00 |
22:04:16.31 |
-09:29:56.2 |
HIP 109058 |
30.80 |
| 2026-03-27 12:00 |
22:04:47.15 |
-09:26:51.6 |
HIP 109058 |
29.45 |
| 2026-03-28 00:00 |
22:05:17.94 |
-09:23:46.9 |
HIP 109058 |
30.35 |
| 2026-03-28 12:00 |
22:05:48.68 |
-09:20:42.1 |
HIP 109058 |
33.30 |
| 2026-03-29 00:00 |
22:06:19.37 |
-09:17:37.3 |
HIP 109142 |
33.88 |
| 2026-03-29 12:00 |
22:06:50.00 |
-09:14:32.4 |
HIP 109142 |
31.10 |
| 2026-03-30 00:00 |
22:07:20.59 |
-09:11:27.4 |
HIP 109142 |
30.32 |
| 2026-03-30 12:00 |
22:07:51.12 |
-09:08:22.4 |
HIP 109142 |
31.68 |
| 2026-03-31 00:00 |
22:08:21.59 |
-09:05:17.3 |
HIP 109380 |
24.23 |
| 2026-03-31 12:00 |
22:08:52.01 |
-09:02:12.2 |
HIP 109380 |
17.06 |
| 2026-04-01 00:00 |
22:09:22.38 |
-08:59:07.0 |
HIP 109380 |
11.26 |
| 2026-04-01 12:00 |
22:09:52.69 |
-08:56:01.8 |
HIP 109380 |
9.70 |
| 2026-04-02 00:00 |
22:10:22.94 |
-08:52:56.5 |
HIP 109380 |
13.86 |
| 2026-04-02 12:00 |
22:10:53.14 |
-08:49:51.2 |
HIP 109380 |
20.50 |
| 2026-04-03 00:00 |
22:11:23.28 |
-08:46:45.9 |
HIP 109380 |
27.90 |
| 2026-04-03 12:00 |
22:11:53.37 |
-08:43:40.6 |
HIP 109380 |
35.57 |
| 2026-04-04 00:00 |
22:12:23.39 |
-08:40:35.3 |
HIP 109801 |
30.09 |
| 2026-04-04 12:00 |
22:12:53.36 |
-08:37:29.9 |
HIP 109801 |
23.52 |
| 2026-04-05 00:00 |
22:13:23.27 |
-08:34:24.5 |
HIP 109801 |
18.16 |
| 2026-04-05 12:00 |
22:13:53.12 |
-08:31:19.2 |
HIP 109801 |
15.34 |
| 2026-04-06 00:00 |
22:14:22.91 |
-08:28:13.8 |
HIP 109801 |
16.39 |
| 2026-04-06 12:00 |
22:14:52.64 |
-08:25:08.5 |
HIP 109899 |
10.32 |
| 2026-04-07 00:00 |
22:15:22.31 |
-08:22:03.1 |
HIP 109899 |
3.42 |
| 2026-04-07 12:00 |
22:15:51.92 |
-08:18:57.8 |
HIP 109899 |
6.60 |
| 2026-04-08 00:00 |
22:16:21.46 |
-08:15:52.5 |
HIP 109899 |
14.19 |
| 2026-04-08 12:00 |
22:16:50.94 |
-08:12:47.2 |
HIP 109899 |
22.01 |
| 2026-04-09 00:00 |
22:17:20.36 |
-08:09:42.0 |
HIP 110003 |
23.92 |
| 2026-04-09 12:00 |
22:17:49.71 |
-08:06:36.7 |
HIP 110003 |
24.57 |
| 2026-04-10 00:00 |
22:18:19.00 |
-08:03:31.6 |
HIP 110003 |
27.56 |
| 2026-04-10 12:00 |
22:18:48.22 |
-08:00:26.5 |
HIP 110273 |
23.54 |
| 2026-04-11 00:00 |
22:19:17.38 |
-07:57:21.4 |
HIP 110273 |
15.74 |
| 2026-04-11 12:00 |
22:19:46.47 |
-07:54:16.4 |
HIP 110273 |
8.05 |
| 2026-04-12 00:00 |
22:20:15.49 |
-07:51:11.5 |
HIP 110273 |
2.12 |
| 2026-04-12 12:00 |
22:20:44.44 |
-07:48:06.7 |
HIP 110273 |
8.14 |
| 2026-04-13 00:00 |
22:21:13.32 |
-07:45:01.9 |
HIP 110396 |
11.07 |
| 2026-04-13 12:00 |
22:21:42.14 |
-07:41:57.2 |
HIP 110396 |
5.45 |
| 2026-04-14 00:00 |
22:22:10.88 |
-07:38:52.6 |
HIP 110396 |
7.58 |
| 2026-04-14 12:00 |
22:22:39.55 |
-07:35:48.2 |
HIP 110396 |
14.32 |
| 2026-04-15 00:00 |
22:23:08.15 |
-07:32:43.8 |
HIP 110396 |
21.72 |
| 2026-04-15 12:00 |
22:23:36.67 |
-07:29:39.5 |
HIP 110532 |
18.03 |
| 2026-04-16 00:00 |
22:24:05.12 |
-07:26:35.4 |
HIP 110532 |
17.02 |