| 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) |
| 2026-05-12 00:00 |
00:22:17.39 |
+24:47:10.1 |
HIP 1759 |
6.40 |
| 2026-05-12 12:00 |
00:22:19.85 |
+24:47:37.8 |
HIP 1759 |
6.89 |
| 2026-05-13 00:00 |
00:22:22.28 |
+24:48:05.5 |
HIP 1759 |
7.42 |
| 2026-05-13 12:00 |
00:22:24.70 |
+24:48:33.3 |
HIP 1759 |
7.98 |
| 2026-05-14 00:00 |
00:22:27.10 |
+24:49:01.0 |
HIP 1759 |
8.56 |
| 2026-05-14 12:00 |
00:22:29.48 |
+24:49:28.7 |
HIP 1759 |
9.16 |
| 2026-05-15 00:00 |
00:22:31.84 |
+24:49:56.5 |
HIP 1759 |
9.77 |
| 2026-05-15 12:00 |
00:22:34.18 |
+24:50:24.2 |
HIP 1759 |
10.39 |
| 2026-05-16 00:00 |
00:22:36.50 |
+24:50:51.9 |
HIP 1759 |
11.02 |
| 2026-05-16 12:00 |
00:22:38.80 |
+24:51:19.7 |
HIP 1759 |
11.66 |
| 2026-05-17 00:00 |
00:22:41.08 |
+24:51:47.4 |
HIP 1759 |
12.30 |
| 2026-05-17 12:00 |
00:22:43.34 |
+24:52:15.1 |
HIP 1759 |
12.94 |
| 2026-05-18 00:00 |
00:22:45.58 |
+24:52:42.8 |
HIP 1759 |
13.59 |
| 2026-05-18 12:00 |
00:22:47.80 |
+24:53:10.4 |
HIP 1759 |
14.24 |
| 2026-05-19 00:00 |
00:22:50.00 |
+24:53:38.1 |
HIP 1759 |
14.88 |
| 2026-05-19 12:00 |
00:22:52.17 |
+24:54:05.7 |
HIP 1759 |
15.53 |
| 2026-05-20 00:00 |
00:22:54.33 |
+24:54:33.4 |
HIP 1759 |
16.18 |
| 2026-05-20 12:00 |
00:22:56.46 |
+24:55:01.0 |
HIP 1759 |
16.83 |
| 2026-05-21 00:00 |
00:22:58.58 |
+24:55:28.6 |
HIP 1759 |
17.47 |
| 2026-05-21 12:00 |
00:23:00.67 |
+24:55:56.1 |
HIP 1759 |
18.11 |
| 2026-05-22 00:00 |
00:23:02.74 |
+24:56:23.6 |
HIP 1759 |
18.75 |
| 2026-05-22 12:00 |
00:23:04.78 |
+24:56:51.1 |
HIP 1759 |
19.39 |
| 2026-05-23 00:00 |
00:23:06.81 |
+24:57:18.6 |
HIP 1759 |
20.03 |
| 2026-05-23 12:00 |
00:23:08.81 |
+24:57:46.1 |
HIP 1759 |
20.66 |
| 2026-05-24 00:00 |
00:23:10.79 |
+24:58:13.5 |
HIP 1759 |
21.30 |
| 2026-05-24 12:00 |
00:23:12.75 |
+24:58:40.8 |
HIP 1759 |
21.92 |
| 2026-05-25 00:00 |
00:23:14.69 |
+24:59:08.2 |
HIP 1759 |
22.55 |
| 2026-05-25 12:00 |
00:23:16.60 |
+24:59:35.5 |
HIP 1759 |
23.17 |
| 2026-05-26 00:00 |
00:23:18.49 |
+25:00:02.7 |
HIP 1759 |
23.79 |
| 2026-05-26 12:00 |
00:23:20.36 |
+25:00:30.0 |
HIP 1759 |
24.41 |
| 2026-05-27 00:00 |
00:23:22.21 |
+25:00:57.2 |
HIP 1759 |
25.02 |
| 2026-05-27 12:00 |
00:23:24.03 |
+25:01:24.3 |
HIP 1759 |
25.63 |
| 2026-05-28 00:00 |
00:23:25.83 |
+25:01:51.4 |
HIP 1759 |
26.23 |
| 2026-05-28 12:00 |
00:23:27.60 |
+25:02:18.4 |
HIP 1759 |
26.84 |
| 2026-05-29 00:00 |
00:23:29.36 |
+25:02:45.4 |
HIP 1759 |
27.43 |
| 2026-05-29 12:00 |
00:23:31.09 |
+25:03:12.4 |
HIP 1759 |
28.03 |
| 2026-05-30 00:00 |
00:23:32.79 |
+25:03:39.3 |
HIP 1759 |
28.62 |
| 2026-05-30 12:00 |
00:23:34.48 |
+25:04:06.1 |
HIP 1759 |
29.21 |
| 2026-05-31 00:00 |
00:23:36.13 |
+25:04:32.9 |
HIP 1759 |
29.79 |
| 2026-05-31 12:00 |
00:23:37.77 |
+25:04:59.7 |
HIP 1759 |
30.37 |
| 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 |