| Parameter |
Value |
| Designation |
P/2005 T3 (Read) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-01-12T10:35:40.450560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:53Z |
| Obs used |
42 |
| NEO |
- |
| M1 |
9.200 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2005-10-24.0000000 |
| e |
0.17378534 |
| q (au) |
6.202461 |
| a (au) |
7.507082 |
| i (deg) |
6.263090 |
| Ω (om, deg) |
27.995785 |
| ω (w, deg) |
8.164900 |
| M (ma, deg) |
356.145419 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.262 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.262 |
| n |
2.000 |
| gf |
0.955 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
8.888 |
| 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) |
| 2026-06-01 00:00 |
02:08:34.31 |
+13:08:16.5 |
HIP 10094 |
17.74 |
| 2026-06-01 12:00 |
02:08:54.02 |
+13:10:12.4 |
HIP 10094 |
12.79 |
| 2026-06-02 00:00 |
02:09:13.69 |
+13:12:07.9 |
HIP 10094 |
8.16 |
| 2026-06-02 12:00 |
02:09:33.31 |
+13:14:03.1 |
HIP 10094 |
4.76 |
| 2026-06-03 00:00 |
02:09:52.89 |
+13:15:57.9 |
HIP 10094 |
5.63 |
| 2026-06-03 12:00 |
02:10:12.41 |
+13:17:52.3 |
HIP 10094 |
9.65 |
| 2026-06-04 00:00 |
02:10:31.88 |
+13:19:46.4 |
HIP 10094 |
14.38 |
| 2026-06-04 12:00 |
02:10:51.30 |
+13:21:40.2 |
HIP 10094 |
19.28 |
| 2026-06-05 00:00 |
02:11:10.67 |
+13:23:33.6 |
HIP 10175 |
18.03 |
| 2026-06-05 12:00 |
02:11:29.98 |
+13:25:26.6 |
HIP 10175 |
18.09 |
| 2026-06-06 00:00 |
02:11:49.24 |
+13:27:19.2 |
HIP 10175 |
19.51 |
| 2026-06-06 12:00 |
02:12:08.45 |
+13:29:11.5 |
HIP 10175 |
22.01 |
| 2026-06-07 00:00 |
02:12:27.61 |
+13:31:03.4 |
HIP 10300 |
24.33 |
| 2026-06-07 12:00 |
02:12:46.71 |
+13:32:54.9 |
HIP 10300 |
22.22 |
| 2026-06-08 00:00 |
02:13:05.75 |
+13:34:46.1 |
HIP 10300 |
21.10 |
| 2026-06-08 12:00 |
02:13:24.74 |
+13:36:36.9 |
HIP 10300 |
21.13 |
| 2026-06-09 00:00 |
02:13:43.67 |
+13:38:27.3 |
HIP 10300 |
22.30 |
| 2026-06-09 12:00 |
02:14:02.54 |
+13:40:17.3 |
HIP 10300 |
24.42 |
| 2026-06-10 00:00 |
02:14:21.36 |
+13:42:06.9 |
HIP 10300 |
27.27 |
| 2026-06-10 12:00 |
02:14:40.11 |
+13:43:56.1 |
HIP 10300 |
30.63 |
| 2026-06-11 00:00 |
02:14:58.81 |
+13:45:44.9 |
HIP 10300 |
34.36 |
| 2026-06-11 12:00 |
02:15:17.44 |
+13:47:33.4 |
HIP 10300 |
38.33 |
| 2026-06-12 00:00 |
02:15:36.01 |
+13:49:21.4 |
HIP 10300 |
42.48 |
| 2026-06-12 12:00 |
02:15:54.52 |
+13:51:09.1 |
HIP 10766 |
39.15 |
| 2026-06-13 00:00 |
02:16:12.97 |
+13:52:56.3 |
HIP 10766 |
34.48 |
| 2026-06-13 12:00 |
02:16:31.36 |
+13:54:43.1 |
HIP 10766 |
29.86 |
| 2026-06-14 00:00 |
02:16:49.68 |
+13:56:29.5 |
HIP 10766 |
25.33 |
| 2026-06-14 12:00 |
02:17:07.93 |
+13:58:15.5 |
HIP 10766 |
20.93 |
| 2026-06-15 00:00 |
02:17:26.12 |
+14:00:01.1 |
HIP 10766 |
16.75 |
| 2026-06-15 12:00 |
02:17:44.24 |
+14:01:46.3 |
HIP 10766 |
12.98 |
| 2026-06-16 00:00 |
02:18:02.30 |
+14:03:31.0 |
HIP 10766 |
10.08 |
| 2026-06-16 12:00 |
02:18:20.28 |
+14:05:15.4 |
HIP 10766 |
8.89 |
| 2026-06-17 00:00 |
02:18:38.20 |
+14:06:59.3 |
HIP 10766 |
10.02 |
| 2026-06-17 12:00 |
02:18:56.05 |
+14:08:42.7 |
HIP 10766 |
12.85 |
| 2026-06-18 00:00 |
02:19:13.82 |
+14:10:25.8 |
HIP 10895 |
16.28 |
| 2026-06-18 12:00 |
02:19:31.53 |
+14:12:08.4 |
HIP 10895 |
11.69 |
| 2026-06-19 00:00 |
02:19:49.16 |
+14:13:50.6 |
HIP 10895 |
7.16 |
| 2026-06-19 12:00 |
02:20:06.73 |
+14:15:32.3 |
HIP 10895 |
2.86 |
| 2026-06-20 00:00 |
02:20:24.22 |
+14:17:13.6 |
HIP 10895 |
2.65 |
| 2026-06-20 12:00 |
02:20:41.63 |
+14:18:54.5 |
HIP 10895 |
6.87 |
| 2026-06-21 00:00 |
02:20:58.97 |
+14:20:34.9 |
HIP 10895 |
11.32 |
| 2026-06-21 12:00 |
02:21:16.24 |
+14:22:14.9 |
HIP 10895 |
15.79 |
| 2026-06-22 00:00 |
02:21:33.43 |
+14:23:54.5 |
HIP 10895 |
20.26 |