| Parameter |
Value |
| Designation |
C/2003 T2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-11-14T00:39:55.854720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:34Z |
| Obs used |
442 |
| NEO |
- |
| M1 |
10.400 |
| K1 |
24.750 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-11-29.0000000 |
| e |
0.99974064 |
| q (au) |
1.786356 |
| a (au) |
6887.427569 |
| i (deg) |
87.531639 |
| Ω (om, deg) |
238.532615 |
| ω (w, deg) |
152.233201 |
| M (ma, deg) |
0.000026 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.724 + 4.479\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.724 |
| n |
4.479 |
| gf |
1.000 |
| gb |
-0.505 |
| k |
1.000 |
| δ90 |
10.000 |
| 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 |
13:29:44.65 |
-67:32:43.3 |
HIP 66012 |
13.18 |
| 2026-06-01 12:00 |
13:29:40.21 |
-67:32:11.1 |
HIP 66012 |
13.67 |
| 2026-06-02 00:00 |
13:29:35.82 |
-67:31:38.8 |
HIP 65986 |
14.00 |
| 2026-06-02 12:00 |
13:29:31.46 |
-67:31:06.4 |
HIP 65986 |
14.13 |
| 2026-06-03 00:00 |
13:29:27.16 |
-67:30:33.8 |
HIP 65986 |
14.29 |
| 2026-06-03 12:00 |
13:29:22.90 |
-67:30:01.0 |
HIP 65986 |
14.47 |
| 2026-06-04 00:00 |
13:29:18.68 |
-67:29:28.1 |
HIP 65986 |
14.67 |
| 2026-06-04 12:00 |
13:29:14.51 |
-67:28:55.1 |
HIP 65986 |
14.90 |
| 2026-06-05 00:00 |
13:29:10.39 |
-67:28:21.9 |
HIP 65986 |
15.16 |
| 2026-06-05 12:00 |
13:29:06.32 |
-67:27:48.6 |
HIP 65986 |
15.43 |
| 2026-06-06 00:00 |
13:29:02.29 |
-67:27:15.1 |
HIP 65986 |
15.73 |
| 2026-06-06 12:00 |
13:28:58.31 |
-67:26:41.5 |
HIP 65986 |
16.04 |
| 2026-06-07 00:00 |
13:28:54.38 |
-67:26:07.7 |
HIP 65986 |
16.37 |
| 2026-06-07 12:00 |
13:28:50.49 |
-67:25:33.9 |
HIP 65986 |
16.72 |
| 2026-06-08 00:00 |
13:28:46.66 |
-67:24:59.9 |
HIP 65986 |
17.08 |
| 2026-06-08 12:00 |
13:28:42.87 |
-67:24:25.8 |
HIP 65986 |
17.46 |
| 2026-06-09 00:00 |
13:28:39.13 |
-67:23:51.5 |
HIP 65986 |
17.85 |
| 2026-06-09 12:00 |
13:28:35.44 |
-67:23:17.1 |
HIP 65986 |
18.25 |
| 2026-06-10 00:00 |
13:28:31.80 |
-67:22:42.7 |
HIP 65986 |
18.66 |
| 2026-06-10 12:00 |
13:28:28.21 |
-67:22:08.1 |
HIP 65986 |
19.09 |
| 2026-06-11 00:00 |
13:28:24.66 |
-67:21:33.3 |
HIP 65986 |
19.52 |
| 2026-06-11 12:00 |
13:28:21.17 |
-67:20:58.5 |
HIP 65986 |
19.97 |
| 2026-06-12 00:00 |
13:28:17.73 |
-67:20:23.6 |
HIP 65608 |
20.19 |
| 2026-06-12 12:00 |
13:28:14.34 |
-67:19:48.6 |
HIP 65608 |
19.53 |
| 2026-06-13 00:00 |
13:28:11.00 |
-67:19:13.4 |
HIP 65608 |
18.88 |
| 2026-06-13 12:00 |
13:28:07.71 |
-67:18:38.2 |
HIP 65608 |
18.22 |
| 2026-06-14 00:00 |
13:28:04.47 |
-67:18:02.9 |
HIP 65608 |
17.56 |
| 2026-06-14 12:00 |
13:28:01.28 |
-67:17:27.4 |
HIP 65608 |
16.90 |
| 2026-06-15 00:00 |
13:27:58.14 |
-67:16:51.9 |
HIP 65608 |
16.25 |
| 2026-06-15 12:00 |
13:27:55.06 |
-67:16:16.3 |
HIP 65608 |
15.59 |
| 2026-06-16 00:00 |
13:27:52.03 |
-67:15:40.6 |
HIP 65608 |
14.94 |
| 2026-06-16 12:00 |
13:27:49.05 |
-67:15:04.9 |
HIP 65608 |
14.29 |
| 2026-06-17 00:00 |
13:27:46.12 |
-67:14:29.0 |
HIP 65608 |
13.64 |
| 2026-06-17 12:00 |
13:27:43.24 |
-67:13:53.1 |
HIP 65608 |
12.98 |
| 2026-06-18 00:00 |
13:27:40.42 |
-67:13:17.1 |
HIP 65608 |
12.34 |
| 2026-06-18 12:00 |
13:27:37.65 |
-67:12:41.1 |
HIP 65608 |
11.69 |
| 2026-06-19 00:00 |
13:27:34.93 |
-67:12:04.9 |
HIP 65608 |
11.04 |
| 2026-06-19 12:00 |
13:27:32.27 |
-67:11:28.7 |
HIP 65608 |
10.39 |
| 2026-06-20 00:00 |
13:27:29.65 |
-67:10:52.5 |
HIP 65608 |
9.75 |
| 2026-06-20 12:00 |
13:27:27.10 |
-67:10:16.2 |
HIP 65608 |
9.11 |
| 2026-06-21 00:00 |
13:27:24.59 |
-67:09:39.8 |
HIP 65608 |
8.46 |
| 2026-06-21 12:00 |
13:27:22.14 |
-67:09:03.4 |
HIP 65608 |
7.83 |
| 2026-06-22 00:00 |
13:27:19.74 |
-67:08:26.9 |
HIP 65608 |
7.19 |