| Parameter |
Value |
| Designation |
C/2002 CE10 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-06-22T02:22:09.416640Z |
| Orbit solution date (soln_date, UTC) |
2025-09-09T12:42:31Z |
| Obs used |
821 |
| NEO |
- |
| M1 |
13.500 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-06-22.0000000 |
| e |
0.79148441 |
| q (au) |
2.046759 |
| a (au) |
9.815858 |
| i (deg) |
145.458691 |
| Ω (om, deg) |
147.443946 |
| ω (w, deg) |
126.188143 |
| M (ma, deg) |
359.996836 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.514 + 4.943\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.514 |
| n |
4.943 |
| gf |
1.000 |
| gb |
-0.532 |
| k |
0.800 |
| 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) |
| 2026-09-20 00:00 |
11:17:04.62 |
-13:41:49.3 |
HIP 55365 |
47.07 |
| 2026-09-20 12:00 |
11:17:11.32 |
-13:42:25.1 |
HIP 55365 |
45.34 |
| 2026-09-21 00:00 |
11:17:18.01 |
-13:43:01.2 |
HIP 55365 |
43.62 |
| 2026-09-21 12:00 |
11:17:24.69 |
-13:43:37.5 |
HIP 55365 |
41.90 |
| 2026-09-22 00:00 |
11:17:31.37 |
-13:44:14.0 |
HIP 55365 |
40.19 |
| 2026-09-22 12:00 |
11:17:38.03 |
-13:44:50.8 |
HIP 55365 |
38.47 |
| 2026-09-23 00:00 |
11:17:44.69 |
-13:45:27.8 |
HIP 55365 |
36.76 |
| 2026-09-23 12:00 |
11:17:51.33 |
-13:46:05.1 |
HIP 55365 |
35.06 |
| 2026-09-24 00:00 |
11:17:57.97 |
-13:46:42.6 |
HIP 55365 |
33.35 |
| 2026-09-24 12:00 |
11:18:04.59 |
-13:47:20.3 |
HIP 55365 |
31.66 |
| 2026-09-25 00:00 |
11:18:11.20 |
-13:47:58.3 |
HIP 55365 |
29.97 |
| 2026-09-25 12:00 |
11:18:17.80 |
-13:48:36.4 |
HIP 55365 |
28.28 |
| 2026-09-26 00:00 |
11:18:24.39 |
-13:49:14.8 |
HIP 55365 |
26.60 |
| 2026-09-26 12:00 |
11:18:30.97 |
-13:49:53.4 |
HIP 55365 |
24.93 |
| 2026-09-27 00:00 |
11:18:37.53 |
-13:50:32.3 |
HIP 55365 |
23.27 |
| 2026-09-27 12:00 |
11:18:44.08 |
-13:51:11.3 |
HIP 55365 |
21.63 |
| 2026-09-28 00:00 |
11:18:50.61 |
-13:51:50.5 |
HIP 55365 |
20.00 |
| 2026-09-28 12:00 |
11:18:57.13 |
-13:52:30.0 |
HIP 55365 |
18.38 |
| 2026-09-29 00:00 |
11:19:03.64 |
-13:53:09.7 |
HIP 55365 |
16.80 |
| 2026-09-29 12:00 |
11:19:10.13 |
-13:53:49.5 |
HIP 55365 |
15.24 |
| 2026-09-30 00:00 |
11:19:16.60 |
-13:54:29.6 |
HIP 55365 |
13.72 |
| 2026-09-30 12:00 |
11:19:23.06 |
-13:55:09.8 |
HIP 55365 |
12.26 |
| 2026-10-01 00:00 |
11:19:29.51 |
-13:55:50.3 |
HIP 55365 |
10.87 |
| 2026-10-01 12:00 |
11:19:35.93 |
-13:56:30.9 |
HIP 55365 |
9.60 |
| 2026-10-02 00:00 |
11:19:42.34 |
-13:57:11.8 |
HIP 55365 |
8.47 |
| 2026-10-02 12:00 |
11:19:48.73 |
-13:57:52.8 |
HIP 55365 |
7.57 |
| 2026-10-03 00:00 |
11:19:55.10 |
-13:58:34.0 |
HIP 55365 |
6.98 |
| 2026-10-03 12:00 |
11:20:01.46 |
-13:59:15.3 |
HIP 55365 |
6.77 |
| 2026-10-04 00:00 |
11:20:07.79 |
-13:59:56.9 |
HIP 55365 |
6.98 |
| 2026-10-04 12:00 |
11:20:14.11 |
-14:00:38.6 |
HIP 55365 |
7.57 |
| 2026-10-05 00:00 |
11:20:20.40 |
-14:01:20.5 |
HIP 55365 |
8.47 |
| 2026-10-05 12:00 |
11:20:26.68 |
-14:02:02.6 |
HIP 55365 |
9.57 |
| 2026-10-06 00:00 |
11:20:32.93 |
-14:02:44.8 |
HIP 55437 |
8.96 |
| 2026-10-06 12:00 |
11:20:39.16 |
-14:03:27.2 |
HIP 55437 |
7.33 |
| 2026-10-07 00:00 |
11:20:45.37 |
-14:04:09.7 |
HIP 55437 |
5.73 |
| 2026-10-07 12:00 |
11:20:51.56 |
-14:04:52.4 |
HIP 55437 |
4.19 |
| 2026-10-08 00:00 |
11:20:57.73 |
-14:05:35.2 |
HIP 55437 |
2.78 |
| 2026-10-08 12:00 |
11:21:03.87 |
-14:06:18.2 |
HIP 55437 |
1.86 |
| 2026-10-09 00:00 |
11:21:09.98 |
-14:07:01.3 |
HIP 55437 |
2.16 |
| 2026-10-09 12:00 |
11:21:16.08 |
-14:07:44.6 |
HIP 55437 |
3.36 |
| 2026-10-10 00:00 |
11:21:22.15 |
-14:08:28.0 |
HIP 55437 |
4.82 |
| 2026-10-10 12:00 |
11:21:28.19 |
-14:09:11.5 |
HIP 55437 |
6.37 |
| 2026-10-11 00:00 |
11:21:34.20 |
-14:09:55.2 |
HIP 55437 |
7.95 |