C/2006 V1 (Catalina)
| Parameter |
Value |
| Designation |
C/2006 V1 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-11-26T12:34:51.493440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:01Z |
| Obs used |
684 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
9.500 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2007-04-27.0000000 |
| e |
0.98961648 |
| q (au) |
2.674903 |
| a (au) |
257.610414 |
| i (deg) |
31.119474 |
| Ω (om, deg) |
335.724230 |
| ω (w, deg) |
253.403550 |
| M (ma, deg) |
359.949101 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.399 + 2.907\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.399 |
| n |
2.907 |
| gf |
1.000 |
| gb |
-0.949 |
| 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) |
| 2026-02-03 00:00 |
00:12:15.99 |
+23:49:53.2 |
HIP 920 |
11.81 |
| 2026-02-03 12:00 |
00:12:18.32 |
+23:49:53.1 |
HIP 920 |
12.35 |
| 2026-02-04 00:00 |
00:12:20.68 |
+23:49:53.1 |
HIP 920 |
12.88 |
| 2026-02-04 12:00 |
00:12:23.05 |
+23:49:53.4 |
HIP 920 |
13.42 |
| 2026-02-05 00:00 |
00:12:25.44 |
+23:49:53.9 |
HIP 920 |
13.97 |
| 2026-02-05 12:00 |
00:12:27.85 |
+23:49:54.6 |
HIP 920 |
14.52 |
| 2026-02-06 00:00 |
00:12:30.29 |
+23:49:55.6 |
HIP 920 |
15.08 |
| 2026-02-06 12:00 |
00:12:32.74 |
+23:49:56.8 |
HIP 920 |
15.64 |
| 2026-02-07 00:00 |
00:12:35.21 |
+23:49:58.2 |
HIP 920 |
16.21 |
| 2026-02-07 12:00 |
00:12:37.71 |
+23:49:59.9 |
HIP 920 |
16.78 |
| 2026-02-08 00:00 |
00:12:40.22 |
+23:50:01.7 |
HIP 920 |
17.35 |
| 2026-02-08 12:00 |
00:12:42.75 |
+23:50:03.8 |
HIP 920 |
17.93 |
| 2026-02-09 00:00 |
00:12:45.30 |
+23:50:06.2 |
HIP 920 |
18.52 |
| 2026-02-09 12:00 |
00:12:47.87 |
+23:50:08.7 |
HIP 920 |
19.11 |
| 2026-02-10 00:00 |
00:12:50.46 |
+23:50:11.5 |
HIP 920 |
19.70 |
| 2026-02-10 12:00 |
00:12:53.07 |
+23:50:14.5 |
HIP 920 |
20.30 |
| 2026-02-11 00:00 |
00:12:55.70 |
+23:50:17.8 |
HIP 920 |
20.90 |
| 2026-02-11 12:00 |
00:12:58.34 |
+23:50:21.2 |
HIP 920 |
21.51 |
| 2026-02-12 00:00 |
00:13:01.00 |
+23:50:24.9 |
HIP 920 |
22.12 |
| 2026-02-12 12:00 |
00:13:03.68 |
+23:50:28.8 |
HIP 920 |
22.74 |
| 2026-02-13 00:00 |
00:13:06.38 |
+23:50:33.0 |
HIP 920 |
23.36 |
| 2026-02-13 12:00 |
00:13:09.10 |
+23:50:37.3 |
HIP 1188 |
23.27 |
| 2026-02-14 00:00 |
00:13:11.83 |
+23:50:41.9 |
HIP 1188 |
22.66 |
| 2026-02-14 12:00 |
00:13:14.58 |
+23:50:46.7 |
HIP 1188 |
22.05 |
| 2026-02-15 00:00 |
00:13:17.35 |
+23:50:51.8 |
HIP 1188 |
21.44 |
| 2026-02-15 12:00 |
00:13:20.13 |
+23:50:57.0 |
HIP 1188 |
20.82 |
| 2026-02-16 00:00 |
00:13:22.93 |
+23:51:02.5 |
HIP 1188 |
20.21 |
| 2026-02-16 12:00 |
00:13:25.75 |
+23:51:08.2 |
HIP 1188 |
19.59 |
| 2026-02-17 00:00 |
00:13:28.58 |
+23:51:14.2 |
HIP 1188 |
18.97 |
| 2026-02-17 12:00 |
00:13:31.43 |
+23:51:20.3 |
HIP 1188 |
18.35 |
| 2026-02-18 00:00 |
00:13:34.29 |
+23:51:26.7 |
HIP 1188 |
17.73 |
| 2026-02-18 12:00 |
00:13:37.17 |
+23:51:33.3 |
HIP 1188 |
17.12 |
| 2026-02-19 00:00 |
00:13:40.07 |
+23:51:40.1 |
HIP 1188 |
16.50 |
| 2026-02-19 12:00 |
00:13:42.98 |
+23:51:47.1 |
HIP 1188 |
15.89 |
| 2026-02-20 00:00 |
00:13:45.90 |
+23:51:54.4 |
HIP 1188 |
15.27 |
| 2026-02-20 12:00 |
00:13:48.84 |
+23:52:01.9 |
HIP 1188 |
14.67 |
| 2026-02-21 00:00 |
00:13:51.79 |
+23:52:09.6 |
HIP 1188 |
14.07 |
| 2026-02-21 12:00 |
00:13:54.76 |
+23:52:17.5 |
HIP 1188 |
13.47 |
| 2026-02-22 00:00 |
00:13:57.74 |
+23:52:25.6 |
HIP 1188 |
12.88 |
| 2026-02-22 12:00 |
00:14:00.74 |
+23:52:33.9 |
HIP 1188 |
12.31 |
| 2026-02-23 00:00 |
00:14:03.74 |
+23:52:42.5 |
HIP 1188 |
11.74 |
| 2026-02-23 12:00 |
00:14:06.77 |
+23:52:51.2 |
HIP 1188 |
11.19 |
| 2026-02-24 00:00 |
00:14:09.80 |
+23:53:00.2 |
HIP 1188 |
10.66 |