| 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) |
| 2026-06-01 00:00 |
00:23:39.38 |
+25:05:26.3 |
HIP 1759 |
30.94 |
| 2026-06-01 12:00 |
00:23:40.97 |
+25:05:53.0 |
HIP 1759 |
31.51 |
| 2026-06-02 00:00 |
00:23:42.53 |
+25:06:19.5 |
HIP 1759 |
32.08 |
| 2026-06-02 12:00 |
00:23:44.07 |
+25:06:46.0 |
HIP 1759 |
32.64 |
| 2026-06-03 00:00 |
00:23:45.58 |
+25:07:12.5 |
HIP 1759 |
33.20 |
| 2026-06-03 12:00 |
00:23:47.07 |
+25:07:38.8 |
HIP 1759 |
33.75 |
| 2026-06-04 00:00 |
00:23:48.54 |
+25:08:05.2 |
HIP 1759 |
34.30 |
| 2026-06-04 12:00 |
00:23:49.98 |
+25:08:31.4 |
HIP 1759 |
34.85 |
| 2026-06-05 00:00 |
00:23:51.40 |
+25:08:57.6 |
HIP 1759 |
35.39 |
| 2026-06-05 12:00 |
00:23:52.79 |
+25:09:23.7 |
HIP 1759 |
35.93 |
| 2026-06-06 00:00 |
00:23:54.15 |
+25:09:49.7 |
HIP 1759 |
36.46 |
| 2026-06-06 12:00 |
00:23:55.50 |
+25:10:15.7 |
HIP 1759 |
36.99 |
| 2026-06-07 00:00 |
00:23:56.81 |
+25:10:41.5 |
HIP 1759 |
37.51 |
| 2026-06-07 12:00 |
00:23:58.10 |
+25:11:07.4 |
HIP 1759 |
38.03 |
| 2026-06-08 00:00 |
00:23:59.37 |
+25:11:33.1 |
HIP 1759 |
38.55 |
| 2026-06-08 12:00 |
00:24:00.61 |
+25:11:58.7 |
HIP 1759 |
39.06 |
| 2026-06-09 00:00 |
00:24:01.82 |
+25:12:24.3 |
HIP 1759 |
39.56 |
| 2026-06-09 12:00 |
00:24:03.01 |
+25:12:49.8 |
HIP 1689 |
39.82 |
| 2026-06-10 00:00 |
00:24:04.18 |
+25:13:15.2 |
HIP 1689 |
40.00 |
| 2026-06-10 12:00 |
00:24:05.31 |
+25:13:40.5 |
HIP 1689 |
40.18 |
| 2026-06-11 00:00 |
00:24:06.43 |
+25:14:05.7 |
HIP 1689 |
40.36 |
| 2026-06-11 12:00 |
00:24:07.51 |
+25:14:30.8 |
HIP 1689 |
40.54 |
| 2026-06-12 00:00 |
00:24:08.57 |
+25:14:55.9 |
HIP 1689 |
40.72 |
| 2026-06-12 12:00 |
00:24:09.61 |
+25:15:20.8 |
HIP 1689 |
40.90 |
| 2026-06-13 00:00 |
00:24:10.61 |
+25:15:45.7 |
HIP 1689 |
41.07 |
| 2026-06-13 12:00 |
00:24:11.59 |
+25:16:10.4 |
HIP 1689 |
41.25 |
| 2026-06-14 00:00 |
00:24:12.55 |
+25:16:35.1 |
HIP 2135 |
41.37 |
| 2026-06-14 12:00 |
00:24:13.47 |
+25:16:59.7 |
HIP 2135 |
41.32 |
| 2026-06-15 00:00 |
00:24:14.38 |
+25:17:24.1 |
HIP 2135 |
41.27 |
| 2026-06-15 12:00 |
00:24:15.25 |
+25:17:48.5 |
HIP 2135 |
41.23 |
| 2026-06-16 00:00 |
00:24:16.10 |
+25:18:12.7 |
HIP 2135 |
41.21 |
| 2026-06-16 12:00 |
00:24:16.92 |
+25:18:36.9 |
HIP 2135 |
41.19 |
| 2026-06-17 00:00 |
00:24:17.71 |
+25:19:00.9 |
HIP 2135 |
41.18 |
| 2026-06-17 12:00 |
00:24:18.48 |
+25:19:24.8 |
HIP 2135 |
41.18 |
| 2026-06-18 00:00 |
00:24:19.22 |
+25:19:48.6 |
HIP 2135 |
41.20 |
| 2026-06-18 12:00 |
00:24:19.93 |
+25:20:12.3 |
HIP 2077 |
41.11 |
| 2026-06-19 00:00 |
00:24:20.62 |
+25:20:35.9 |
HIP 2077 |
40.71 |
| 2026-06-19 12:00 |
00:24:21.27 |
+25:20:59.4 |
HIP 2077 |
40.31 |
| 2026-06-20 00:00 |
00:24:21.91 |
+25:21:22.7 |
HIP 2077 |
39.92 |
| 2026-06-20 12:00 |
00:24:22.51 |
+25:21:46.0 |
HIP 2077 |
39.53 |
| 2026-06-21 00:00 |
00:24:23.09 |
+25:22:09.1 |
HIP 2077 |
39.15 |
| 2026-06-21 12:00 |
00:24:23.64 |
+25:22:32.1 |
HIP 2077 |
38.78 |
| 2026-06-22 00:00 |
00:24:24.16 |
+25:22:54.9 |
HIP 2077 |
38.41 |