| 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
$$
M_a = (14.074 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
14.074 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.744 |
| k |
0.800 |
| δ90 |
9.977 |
| 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) |
| 2026-09-25 00:00 |
19:29:54.11 |
-08:20:58.0 |
HIP 95944 |
15.35 |
| 2026-09-25 12:00 |
19:29:52.94 |
-08:21:10.4 |
HIP 95944 |
15.71 |
| 2026-09-26 00:00 |
19:29:51.79 |
-08:21:22.8 |
HIP 95944 |
16.06 |
| 2026-09-26 12:00 |
19:29:50.66 |
-08:21:35.2 |
HIP 95944 |
16.40 |
| 2026-09-27 00:00 |
19:29:49.56 |
-08:21:47.6 |
HIP 95944 |
16.74 |
| 2026-09-27 12:00 |
19:29:48.49 |
-08:22:00.0 |
HIP 95944 |
17.08 |
| 2026-09-28 00:00 |
19:29:47.43 |
-08:22:12.2 |
HIP 95944 |
17.41 |
| 2026-09-28 12:00 |
19:29:46.41 |
-08:22:24.5 |
HIP 95944 |
17.74 |
| 2026-09-29 00:00 |
19:29:45.41 |
-08:22:36.7 |
HIP 95944 |
18.06 |
| 2026-09-29 12:00 |
19:29:44.43 |
-08:22:48.9 |
HIP 95944 |
18.37 |
| 2026-09-30 00:00 |
19:29:43.48 |
-08:23:01.1 |
HIP 95944 |
18.69 |
| 2026-09-30 12:00 |
19:29:42.55 |
-08:23:13.2 |
HIP 95944 |
18.99 |
| 2026-10-01 00:00 |
19:29:41.65 |
-08:23:25.3 |
HIP 95944 |
19.29 |
| 2026-10-01 12:00 |
19:29:40.77 |
-08:23:37.3 |
HIP 95944 |
19.59 |
| 2026-10-02 00:00 |
19:29:39.92 |
-08:23:49.3 |
HIP 95944 |
19.88 |
| 2026-10-02 12:00 |
19:29:39.09 |
-08:24:01.2 |
HIP 95944 |
20.16 |
| 2026-10-03 00:00 |
19:29:38.29 |
-08:24:13.2 |
HIP 95944 |
20.44 |
| 2026-10-03 12:00 |
19:29:37.51 |
-08:24:25.0 |
HIP 95944 |
20.71 |
| 2026-10-04 00:00 |
19:29:36.76 |
-08:24:36.8 |
HIP 95944 |
20.98 |
| 2026-10-04 12:00 |
19:29:36.03 |
-08:24:48.6 |
HIP 95944 |
21.25 |
| 2026-10-05 00:00 |
19:29:35.33 |
-08:25:00.4 |
HIP 95944 |
21.51 |
| 2026-10-05 12:00 |
19:29:34.65 |
-08:25:12.1 |
HIP 95944 |
21.76 |
| 2026-10-06 00:00 |
19:29:34.00 |
-08:25:23.7 |
HIP 95944 |
22.01 |
| 2026-10-06 12:00 |
19:29:33.38 |
-08:25:35.3 |
HIP 95944 |
22.25 |
| 2026-10-07 00:00 |
19:29:32.78 |
-08:25:46.8 |
HIP 95944 |
22.49 |
| 2026-10-07 12:00 |
19:29:32.21 |
-08:25:58.3 |
HIP 95944 |
22.72 |
| 2026-10-08 00:00 |
19:29:31.66 |
-08:26:09.8 |
HIP 95944 |
22.95 |
| 2026-10-08 12:00 |
19:29:31.14 |
-08:26:21.2 |
HIP 95944 |
23.17 |
| 2026-10-09 00:00 |
19:29:30.64 |
-08:26:32.5 |
HIP 95944 |
23.38 |
| 2026-10-09 12:00 |
19:29:30.17 |
-08:26:43.8 |
HIP 95944 |
23.60 |
| 2026-10-10 00:00 |
19:29:29.73 |
-08:26:55.0 |
HIP 95944 |
23.80 |
| 2026-10-10 12:00 |
19:29:29.31 |
-08:27:06.2 |
HIP 95944 |
24.00 |
| 2026-10-11 00:00 |
19:29:28.91 |
-08:27:17.3 |
HIP 95944 |
24.20 |
| 2026-10-11 12:00 |
19:29:28.54 |
-08:27:28.4 |
HIP 95944 |
24.39 |
| 2026-10-12 00:00 |
19:29:28.20 |
-08:27:39.4 |
HIP 95944 |
24.57 |
| 2026-10-12 12:00 |
19:29:27.89 |
-08:27:50.3 |
HIP 95944 |
24.76 |
| 2026-10-13 00:00 |
19:29:27.59 |
-08:28:01.2 |
HIP 95944 |
24.93 |
| 2026-10-13 12:00 |
19:29:27.33 |
-08:28:12.0 |
HIP 95944 |
25.10 |
| 2026-10-14 00:00 |
19:29:27.09 |
-08:28:22.8 |
HIP 95944 |
25.27 |
| 2026-10-14 12:00 |
19:29:26.88 |
-08:28:33.5 |
HIP 95944 |
25.43 |
| 2026-10-15 00:00 |
19:29:26.69 |
-08:28:44.1 |
HIP 95944 |
25.58 |
| 2026-10-15 12:00 |
19:29:26.52 |
-08:28:54.7 |
HIP 95944 |
25.73 |
| 2026-10-16 00:00 |
19:29:26.39 |
-08:29:05.2 |
HIP 95944 |
25.88 |