| 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) |
| 2026-03-26 00:00 |
11:14:17.75 |
-17:04:45.1 |
HIP 54876 |
11.70 |
| 2026-03-26 12:00 |
11:14:08.94 |
-17:03:31.6 |
HIP 54876 |
10.36 |
| 2026-03-27 00:00 |
11:14:00.15 |
-17:02:17.9 |
HIP 54876 |
9.46 |
| 2026-03-27 12:00 |
11:13:51.39 |
-17:01:03.8 |
HIP 54876 |
9.12 |
| 2026-03-28 00:00 |
11:13:42.66 |
-16:59:49.5 |
HIP 54876 |
9.42 |
| 2026-03-28 12:00 |
11:13:33.96 |
-16:58:34.9 |
HIP 54876 |
10.29 |
| 2026-03-29 00:00 |
11:13:25.28 |
-16:57:20.0 |
HIP 54876 |
11.60 |
| 2026-03-29 12:00 |
11:13:16.63 |
-16:56:04.8 |
HIP 54876 |
13.23 |
| 2026-03-30 00:00 |
11:13:08.01 |
-16:54:49.4 |
HIP 54876 |
15.06 |
| 2026-03-30 12:00 |
11:12:59.41 |
-16:53:33.7 |
HIP 54876 |
17.03 |
| 2026-03-31 00:00 |
11:12:50.85 |
-16:52:17.8 |
HIP 54876 |
19.09 |
| 2026-03-31 12:00 |
11:12:42.32 |
-16:51:01.6 |
HIP 54876 |
21.22 |
| 2026-04-01 00:00 |
11:12:33.82 |
-16:49:45.2 |
HIP 54876 |
23.40 |
| 2026-04-01 12:00 |
11:12:25.35 |
-16:48:28.6 |
HIP 54876 |
25.61 |
| 2026-04-02 00:00 |
11:12:16.92 |
-16:47:11.7 |
HIP 54649 |
26.42 |
| 2026-04-02 12:00 |
11:12:08.52 |
-16:45:54.6 |
HIP 54649 |
26.29 |
| 2026-04-03 00:00 |
11:12:00.15 |
-16:44:37.3 |
HIP 54649 |
26.39 |
| 2026-04-03 12:00 |
11:11:51.81 |
-16:43:19.8 |
HIP 54612 |
24.50 |
| 2026-04-04 00:00 |
11:11:43.52 |
-16:42:02.1 |
HIP 54612 |
22.16 |
| 2026-04-04 12:00 |
11:11:35.25 |
-16:40:44.2 |
HIP 54612 |
19.82 |
| 2026-04-05 00:00 |
11:11:27.03 |
-16:39:26.1 |
HIP 54612 |
17.50 |
| 2026-04-05 12:00 |
11:11:18.84 |
-16:38:07.8 |
HIP 54612 |
15.19 |
| 2026-04-06 00:00 |
11:11:10.69 |
-16:36:49.4 |
HIP 54612 |
12.90 |
| 2026-04-06 12:00 |
11:11:02.58 |
-16:35:30.7 |
HIP 54612 |
10.65 |
| 2026-04-07 00:00 |
11:10:54.50 |
-16:34:11.9 |
HIP 54612 |
8.44 |
| 2026-04-07 12:00 |
11:10:46.47 |
-16:32:53.0 |
HIP 54612 |
6.34 |
| 2026-04-08 00:00 |
11:10:38.48 |
-16:31:33.8 |
HIP 54612 |
4.46 |
| 2026-04-08 12:00 |
11:10:30.52 |
-16:30:14.6 |
HIP 54612 |
3.23 |
| 2026-04-09 00:00 |
11:10:22.61 |
-16:28:55.2 |
HIP 54612 |
3.41 |
| 2026-04-09 12:00 |
11:10:14.74 |
-16:27:35.6 |
HIP 54612 |
4.84 |
| 2026-04-10 00:00 |
11:10:06.92 |
-16:26:16.0 |
HIP 54612 |
6.77 |
| 2026-04-10 12:00 |
11:09:59.13 |
-16:24:56.2 |
HIP 54612 |
8.86 |
| 2026-04-11 00:00 |
11:09:51.39 |
-16:23:36.3 |
HIP 54612 |
11.03 |
| 2026-04-11 12:00 |
11:09:43.70 |
-16:22:16.3 |
HIP 54612 |
13.22 |
| 2026-04-12 00:00 |
11:09:36.05 |
-16:20:56.2 |
HIP 54612 |
15.43 |
| 2026-04-12 12:00 |
11:09:28.45 |
-16:19:35.9 |
HIP 54612 |
17.65 |
| 2026-04-13 00:00 |
11:09:20.89 |
-16:18:15.6 |
HIP 54612 |
19.87 |
| 2026-04-13 12:00 |
11:09:13.38 |
-16:16:55.3 |
HIP 54612 |
22.08 |
| 2026-04-14 00:00 |
11:09:05.91 |
-16:15:34.8 |
HIP 54434 |
21.35 |
| 2026-04-14 12:00 |
11:08:58.50 |
-16:14:14.3 |
HIP 54434 |
19.27 |
| 2026-04-15 00:00 |
11:08:51.13 |
-16:12:53.7 |
HIP 54434 |
17.23 |
| 2026-04-15 12:00 |
11:08:43.81 |
-16:11:33.0 |
HIP 54434 |
15.24 |
| 2026-04-16 00:00 |
11:08:36.55 |
-16:10:12.3 |
HIP 54434 |
13.33 |