C/2002 V2 (LINEAR)
| Parameter |
Value |
| Designation |
C/2002 V2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-05-13T16:33:06.503040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:22Z |
| Obs used |
317 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
4.500 |
| PC |
- |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2003-08-14.0000000 |
| e |
0.99864267 |
| q (au) |
6.812027 |
| a (au) |
5018.714542 |
| i (deg) |
166.776236 |
| Ω (om, deg) |
20.234100 |
| ω (w, deg) |
314.679306 |
| M (ma, deg) |
0.000256 |
Magnitude
Scatter + Global Linear
$$
M_a = (14.142 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.142 |
| n |
2.000 |
| gf |
0.994 |
| gb |
-0.749 |
| k |
0.800 |
| δ90 |
9.924 |
| 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 |
19:39:29.22 |
-08:23:49.6 |
HIP 96654 |
6.65 |
| 2026-02-03 12:00 |
19:39:31.72 |
-08:23:39.8 |
HIP 96654 |
7.28 |
| 2026-02-04 00:00 |
19:39:34.21 |
-08:23:30.0 |
HIP 96654 |
7.91 |
| 2026-02-04 12:00 |
19:39:36.69 |
-08:23:20.1 |
HIP 96654 |
8.54 |
| 2026-02-05 00:00 |
19:39:39.16 |
-08:23:10.1 |
HIP 96654 |
9.16 |
| 2026-02-05 12:00 |
19:39:41.62 |
-08:23:00.1 |
HIP 96654 |
9.79 |
| 2026-02-06 00:00 |
19:39:44.07 |
-08:22:50.1 |
HIP 96654 |
10.42 |
| 2026-02-06 12:00 |
19:39:46.51 |
-08:22:39.9 |
HIP 96654 |
11.04 |
| 2026-02-07 00:00 |
19:39:48.94 |
-08:22:29.8 |
HIP 96654 |
11.66 |
| 2026-02-07 12:00 |
19:39:51.36 |
-08:22:19.5 |
HIP 96654 |
12.28 |
| 2026-02-08 00:00 |
19:39:53.77 |
-08:22:09.3 |
HIP 96654 |
12.90 |
| 2026-02-08 12:00 |
19:39:56.17 |
-08:21:58.9 |
HIP 96654 |
13.52 |
| 2026-02-09 00:00 |
19:39:58.56 |
-08:21:48.5 |
HIP 96654 |
14.13 |
| 2026-02-09 12:00 |
19:40:00.94 |
-08:21:38.1 |
HIP 96654 |
14.75 |
| 2026-02-10 00:00 |
19:40:03.30 |
-08:21:27.6 |
HIP 96654 |
15.36 |
| 2026-02-10 12:00 |
19:40:05.65 |
-08:21:17.0 |
HIP 96654 |
15.96 |
| 2026-02-11 00:00 |
19:40:07.99 |
-08:21:06.4 |
HIP 96654 |
16.57 |
| 2026-02-11 12:00 |
19:40:10.32 |
-08:20:55.8 |
HIP 96654 |
17.17 |
| 2026-02-12 00:00 |
19:40:12.64 |
-08:20:45.1 |
HIP 96654 |
17.77 |
| 2026-02-12 12:00 |
19:40:14.94 |
-08:20:34.3 |
HIP 96654 |
18.37 |
| 2026-02-13 00:00 |
19:40:17.23 |
-08:20:23.6 |
HIP 96654 |
18.96 |
| 2026-02-13 12:00 |
19:40:19.51 |
-08:20:12.7 |
HIP 96654 |
19.55 |
| 2026-02-14 00:00 |
19:40:21.78 |
-08:20:01.8 |
HIP 96654 |
20.14 |
| 2026-02-14 12:00 |
19:40:24.03 |
-08:19:50.9 |
HIP 96654 |
20.73 |
| 2026-02-15 00:00 |
19:40:26.26 |
-08:19:39.9 |
HIP 96654 |
21.31 |
| 2026-02-15 12:00 |
19:40:28.49 |
-08:19:28.9 |
HIP 96754 |
21.50 |
| 2026-02-16 00:00 |
19:40:30.70 |
-08:19:17.9 |
HIP 96754 |
21.48 |
| 2026-02-16 12:00 |
19:40:32.90 |
-08:19:06.8 |
HIP 96754 |
21.47 |
| 2026-02-17 00:00 |
19:40:35.08 |
-08:18:55.6 |
HIP 96754 |
21.47 |
| 2026-02-17 12:00 |
19:40:37.25 |
-08:18:44.5 |
HIP 96754 |
21.49 |
| 2026-02-18 00:00 |
19:40:39.40 |
-08:18:33.3 |
HIP 96754 |
21.52 |
| 2026-02-18 12:00 |
19:40:41.54 |
-08:18:22.0 |
HIP 96754 |
21.56 |
| 2026-02-19 00:00 |
19:40:43.66 |
-08:18:10.7 |
HIP 96754 |
21.61 |
| 2026-02-19 12:00 |
19:40:45.77 |
-08:17:59.4 |
HIP 96754 |
21.68 |
| 2026-02-20 00:00 |
19:40:47.86 |
-08:17:48.1 |
HIP 96754 |
21.76 |
| 2026-02-20 12:00 |
19:40:49.94 |
-08:17:36.7 |
HIP 96754 |
21.85 |
| 2026-02-21 00:00 |
19:40:52.00 |
-08:17:25.3 |
HIP 96754 |
21.95 |
| 2026-02-21 12:00 |
19:40:54.04 |
-08:17:13.8 |
HIP 96754 |
22.06 |
| 2026-02-22 00:00 |
19:40:56.07 |
-08:17:02.4 |
HIP 96754 |
22.18 |
| 2026-02-22 12:00 |
19:40:58.08 |
-08:16:50.8 |
HIP 96754 |
22.31 |
| 2026-02-23 00:00 |
19:41:00.08 |
-08:16:39.3 |
HIP 96754 |
22.45 |
| 2026-02-23 12:00 |
19:41:02.06 |
-08:16:27.8 |
HIP 96754 |
22.59 |
| 2026-02-24 00:00 |
19:41:04.02 |
-08:16:16.2 |
HIP 96754 |
22.75 |