| Parameter |
Value |
| Designation |
C/2006 CK10 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-07-03T06:42:20.756160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:56Z |
| Obs used |
321 |
| NEO |
- |
| M1 |
15.100 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2006-05-25.0000000 |
| e |
0.99190031 |
| q (au) |
1.752169 |
| a (au) |
216.325607 |
| i (deg) |
144.262762 |
| Ω (om, deg) |
243.809967 |
| ω (w, deg) |
143.456329 |
| M (ma, deg) |
359.987832 |
Magnitude
Scatter + Global Linear
$$
M_a = (H_0 + n\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
- |
| n |
- |
| gf |
- |
| gb |
- |
| k |
- |
| δ90 |
- |
| 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 |
20:45:56.07 |
-49:18:41.7 |
HIP 102467 |
1.76 |
| 2026-03-26 12:00 |
20:45:58.39 |
-49:18:55.4 |
HIP 102467 |
1.85 |
| 2026-03-27 00:00 |
20:46:00.69 |
-49:19:09.4 |
HIP 102467 |
2.02 |
| 2026-03-27 12:00 |
20:46:02.95 |
-49:19:23.5 |
HIP 102467 |
2.26 |
| 2026-03-28 00:00 |
20:46:05.18 |
-49:19:37.8 |
HIP 102467 |
2.54 |
| 2026-03-28 12:00 |
20:46:07.38 |
-49:19:52.4 |
HIP 102467 |
2.86 |
| 2026-03-29 00:00 |
20:46:09.55 |
-49:20:07.1 |
HIP 102467 |
3.20 |
| 2026-03-29 12:00 |
20:46:11.68 |
-49:20:21.9 |
HIP 102467 |
3.56 |
| 2026-03-30 00:00 |
20:46:13.78 |
-49:20:37.0 |
HIP 102467 |
3.92 |
| 2026-03-30 12:00 |
20:46:15.85 |
-49:20:52.2 |
HIP 102467 |
4.29 |
| 2026-03-31 00:00 |
20:46:17.89 |
-49:21:07.7 |
HIP 102467 |
4.67 |
| 2026-03-31 12:00 |
20:46:19.89 |
-49:21:23.3 |
HIP 102467 |
5.04 |
| 2026-04-01 00:00 |
20:46:21.86 |
-49:21:39.0 |
HIP 102467 |
5.42 |
| 2026-04-01 12:00 |
20:46:23.80 |
-49:21:55.0 |
HIP 102467 |
5.80 |
| 2026-04-02 00:00 |
20:46:25.71 |
-49:22:11.1 |
HIP 102467 |
6.18 |
| 2026-04-02 12:00 |
20:46:27.58 |
-49:22:27.4 |
HIP 102467 |
6.56 |
| 2026-04-03 00:00 |
20:46:29.41 |
-49:22:43.9 |
HIP 102467 |
6.94 |
| 2026-04-03 12:00 |
20:46:31.22 |
-49:23:00.6 |
HIP 102467 |
7.32 |
| 2026-04-04 00:00 |
20:46:32.98 |
-49:23:17.4 |
HIP 102467 |
7.69 |
| 2026-04-04 12:00 |
20:46:34.72 |
-49:23:34.4 |
HIP 102467 |
8.07 |
| 2026-04-05 00:00 |
20:46:36.42 |
-49:23:51.5 |
HIP 102467 |
8.44 |
| 2026-04-05 12:00 |
20:46:38.08 |
-49:24:08.9 |
HIP 102467 |
8.81 |
| 2026-04-06 00:00 |
20:46:39.72 |
-49:24:26.4 |
HIP 102467 |
9.18 |
| 2026-04-06 12:00 |
20:46:41.31 |
-49:24:44.0 |
HIP 102467 |
9.55 |
| 2026-04-07 00:00 |
20:46:42.87 |
-49:25:01.8 |
HIP 102467 |
9.92 |
| 2026-04-07 12:00 |
20:46:44.40 |
-49:25:19.8 |
HIP 102467 |
10.28 |
| 2026-04-08 00:00 |
20:46:45.89 |
-49:25:38.0 |
HIP 102467 |
10.64 |
| 2026-04-08 12:00 |
20:46:47.35 |
-49:25:56.3 |
HIP 102467 |
11.00 |
| 2026-04-09 00:00 |
20:46:48.77 |
-49:26:14.8 |
HIP 102467 |
11.36 |
| 2026-04-09 12:00 |
20:46:50.15 |
-49:26:33.4 |
HIP 102467 |
11.72 |
| 2026-04-10 00:00 |
20:46:51.50 |
-49:26:52.2 |
HIP 102467 |
12.08 |
| 2026-04-10 12:00 |
20:46:52.81 |
-49:27:11.2 |
HIP 102467 |
12.43 |
| 2026-04-11 00:00 |
20:46:54.09 |
-49:27:30.3 |
HIP 102467 |
12.78 |
| 2026-04-11 12:00 |
20:46:55.33 |
-49:27:49.6 |
HIP 102467 |
13.13 |
| 2026-04-12 00:00 |
20:46:56.54 |
-49:28:09.0 |
HIP 102467 |
13.48 |
| 2026-04-12 12:00 |
20:46:57.70 |
-49:28:28.5 |
HIP 102467 |
13.83 |
| 2026-04-13 00:00 |
20:46:58.83 |
-49:28:48.3 |
HIP 102467 |
14.17 |
| 2026-04-13 12:00 |
20:46:59.93 |
-49:29:08.1 |
HIP 102467 |
14.52 |
| 2026-04-14 00:00 |
20:47:00.99 |
-49:29:28.2 |
HIP 102467 |
14.86 |
| 2026-04-14 12:00 |
20:47:02.01 |
-49:29:48.3 |
HIP 102467 |
15.20 |
| 2026-04-15 00:00 |
20:47:02.99 |
-49:30:08.6 |
HIP 102467 |
15.54 |
| 2026-04-15 12:00 |
20:47:03.94 |
-49:30:29.1 |
HIP 102467 |
15.88 |
| 2026-04-16 00:00 |
20:47:04.85 |
-49:30:49.7 |
HIP 102467 |
16.21 |