C/2006 CK10 (Catalina)
| 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) |
| 2026-02-03 00:00 |
20:39:54.46 |
-49:13:21.5 |
HIP 101905 |
10.68 |
| 2026-02-03 12:00 |
20:39:58.75 |
-49:13:14.0 |
HIP 101905 |
11.31 |
| 2026-02-04 00:00 |
20:40:03.03 |
-49:13:06.7 |
HIP 101905 |
11.95 |
| 2026-02-04 12:00 |
20:40:07.30 |
-49:12:59.5 |
HIP 101905 |
12.60 |
| 2026-02-05 00:00 |
20:40:11.57 |
-49:12:52.6 |
HIP 101905 |
13.25 |
| 2026-02-05 12:00 |
20:40:15.83 |
-49:12:45.9 |
HIP 101905 |
13.90 |
| 2026-02-06 00:00 |
20:40:20.09 |
-49:12:39.4 |
HIP 101913 |
14.49 |
| 2026-02-06 12:00 |
20:40:24.34 |
-49:12:33.1 |
HIP 101913 |
15.01 |
| 2026-02-07 00:00 |
20:40:28.58 |
-49:12:27.0 |
HIP 101913 |
15.55 |
| 2026-02-07 12:00 |
20:40:32.82 |
-49:12:21.1 |
HIP 101913 |
16.11 |
| 2026-02-08 00:00 |
20:40:37.05 |
-49:12:15.4 |
HIP 101913 |
16.67 |
| 2026-02-08 12:00 |
20:40:41.27 |
-49:12:10.0 |
HIP 101913 |
17.25 |
| 2026-02-09 00:00 |
20:40:45.49 |
-49:12:04.7 |
HIP 101913 |
17.83 |
| 2026-02-09 12:00 |
20:40:49.69 |
-49:11:59.6 |
HIP 101913 |
18.42 |
| 2026-02-10 00:00 |
20:40:53.89 |
-49:11:54.8 |
HIP 101913 |
19.02 |
| 2026-02-10 12:00 |
20:40:58.08 |
-49:11:50.2 |
HIP 101913 |
19.63 |
| 2026-02-11 00:00 |
20:41:02.26 |
-49:11:45.7 |
HIP 101913 |
20.24 |
| 2026-02-11 12:00 |
20:41:06.43 |
-49:11:41.5 |
HIP 101913 |
20.85 |
| 2026-02-12 00:00 |
20:41:10.59 |
-49:11:37.5 |
HIP 101913 |
21.47 |
| 2026-02-12 12:00 |
20:41:14.74 |
-49:11:33.7 |
HIP 101913 |
22.09 |
| 2026-02-13 00:00 |
20:41:18.88 |
-49:11:30.1 |
HIP 101913 |
22.72 |
| 2026-02-13 12:00 |
20:41:23.01 |
-49:11:26.8 |
HIP 101913 |
23.35 |
| 2026-02-14 00:00 |
20:41:27.13 |
-49:11:23.6 |
HIP 101913 |
23.98 |
| 2026-02-14 12:00 |
20:41:31.24 |
-49:11:20.7 |
HIP 101913 |
24.61 |
| 2026-02-15 00:00 |
20:41:35.33 |
-49:11:18.0 |
HIP 102163 |
24.72 |
| 2026-02-15 12:00 |
20:41:39.42 |
-49:11:15.5 |
HIP 102163 |
24.56 |
| 2026-02-16 00:00 |
20:41:43.49 |
-49:11:13.2 |
HIP 102163 |
24.43 |
| 2026-02-16 12:00 |
20:41:47.55 |
-49:11:11.1 |
HIP 102163 |
24.31 |
| 2026-02-17 00:00 |
20:41:51.59 |
-49:11:09.2 |
HIP 102349 |
24.13 |
| 2026-02-17 12:00 |
20:41:55.63 |
-49:11:07.6 |
HIP 102349 |
23.48 |
| 2026-02-18 00:00 |
20:41:59.65 |
-49:11:06.2 |
HIP 102349 |
22.84 |
| 2026-02-18 12:00 |
20:42:03.65 |
-49:11:04.9 |
HIP 102349 |
22.20 |
| 2026-02-19 00:00 |
20:42:07.64 |
-49:11:03.9 |
HIP 102349 |
21.57 |
| 2026-02-19 12:00 |
20:42:11.62 |
-49:11:03.2 |
HIP 102349 |
20.94 |
| 2026-02-20 00:00 |
20:42:15.58 |
-49:11:02.6 |
HIP 102349 |
20.32 |
| 2026-02-20 12:00 |
20:42:19.53 |
-49:11:02.2 |
HIP 102349 |
19.70 |
| 2026-02-21 00:00 |
20:42:23.46 |
-49:11:02.1 |
HIP 102349 |
19.09 |
| 2026-02-21 12:00 |
20:42:27.38 |
-49:11:02.2 |
HIP 102349 |
18.48 |
| 2026-02-22 00:00 |
20:42:31.28 |
-49:11:02.5 |
HIP 102349 |
17.87 |
| 2026-02-22 12:00 |
20:42:35.16 |
-49:11:03.0 |
HIP 102349 |
17.28 |
| 2026-02-23 00:00 |
20:42:39.03 |
-49:11:03.7 |
HIP 102349 |
16.69 |
| 2026-02-23 12:00 |
20:42:42.88 |
-49:11:04.7 |
HIP 102349 |
16.11 |
| 2026-02-24 00:00 |
20:42:46.71 |
-49:11:05.9 |
HIP 102349 |
15.53 |