| Parameter |
Value |
| Designation |
C/2003 V1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-03-11T04:18:31.763520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:35Z |
| Obs used |
530 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
8.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2004-01-14.0000000 |
| e |
0.99703579 |
| q (au) |
1.783148 |
| a (au) |
601.560248 |
| i (deg) |
28.675166 |
| Ω (om, deg) |
25.832809 |
| ω (w, deg) |
8.631585 |
| M (ma, deg) |
0.020630 |
Magnitude
Scatter + Global Linear
$$
M_a = (11.839 + 2.858\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
11.839 |
| n |
2.858 |
| gf |
1.000 |
| gb |
-0.632 |
| k |
0.800 |
| 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 |
12:56:23.16 |
+01:23:31.2 |
HIP 63235 |
15.93 |
| 2026-05-12 12:00 |
12:56:21.17 |
+01:23:39.5 |
HIP 63235 |
16.40 |
| 2026-05-13 00:00 |
12:56:19.20 |
+01:23:47.8 |
HIP 63235 |
16.88 |
| 2026-05-13 12:00 |
12:56:17.24 |
+01:23:55.9 |
HIP 63235 |
17.35 |
| 2026-05-14 00:00 |
12:56:15.29 |
+01:24:03.9 |
HIP 63052 |
17.27 |
| 2026-05-14 12:00 |
12:56:13.36 |
+01:24:11.8 |
HIP 63052 |
16.77 |
| 2026-05-15 00:00 |
12:56:11.44 |
+01:24:19.5 |
HIP 63052 |
16.27 |
| 2026-05-15 12:00 |
12:56:09.54 |
+01:24:27.2 |
HIP 63052 |
15.78 |
| 2026-05-16 00:00 |
12:56:07.65 |
+01:24:34.7 |
HIP 63052 |
15.29 |
| 2026-05-16 12:00 |
12:56:05.77 |
+01:24:42.1 |
HIP 63052 |
14.81 |
| 2026-05-17 00:00 |
12:56:03.91 |
+01:24:49.3 |
HIP 63052 |
14.33 |
| 2026-05-17 12:00 |
12:56:02.06 |
+01:24:56.5 |
HIP 63052 |
13.85 |
| 2026-05-18 00:00 |
12:56:00.23 |
+01:25:03.5 |
HIP 63052 |
13.38 |
| 2026-05-18 12:00 |
12:55:58.41 |
+01:25:10.4 |
HIP 63052 |
12.91 |
| 2026-05-19 00:00 |
12:55:56.61 |
+01:25:17.1 |
HIP 63052 |
12.45 |
| 2026-05-19 12:00 |
12:55:54.82 |
+01:25:23.8 |
HIP 63052 |
11.99 |
| 2026-05-20 00:00 |
12:55:53.05 |
+01:25:30.3 |
HIP 63052 |
11.54 |
| 2026-05-20 12:00 |
12:55:51.29 |
+01:25:36.7 |
HIP 63052 |
11.09 |
| 2026-05-21 00:00 |
12:55:49.55 |
+01:25:42.9 |
HIP 63052 |
10.64 |
| 2026-05-21 12:00 |
12:55:47.83 |
+01:25:49.1 |
HIP 63052 |
10.20 |
| 2026-05-22 00:00 |
12:55:46.12 |
+01:25:55.1 |
HIP 63052 |
9.76 |
| 2026-05-22 12:00 |
12:55:44.43 |
+01:26:00.9 |
HIP 63052 |
9.33 |
| 2026-05-23 00:00 |
12:55:42.75 |
+01:26:06.7 |
HIP 63052 |
8.90 |
| 2026-05-23 12:00 |
12:55:41.09 |
+01:26:12.3 |
HIP 63052 |
8.48 |
| 2026-05-24 00:00 |
12:55:39.45 |
+01:26:17.8 |
HIP 63052 |
8.06 |
| 2026-05-24 12:00 |
12:55:37.82 |
+01:26:23.1 |
HIP 63052 |
7.65 |
| 2026-05-25 00:00 |
12:55:36.21 |
+01:26:28.3 |
HIP 63052 |
7.25 |
| 2026-05-25 12:00 |
12:55:34.61 |
+01:26:33.4 |
HIP 63052 |
6.84 |
| 2026-05-26 00:00 |
12:55:33.03 |
+01:26:38.4 |
HIP 63052 |
6.45 |
| 2026-05-26 12:00 |
12:55:31.47 |
+01:26:43.2 |
HIP 63052 |
6.06 |
| 2026-05-27 00:00 |
12:55:29.93 |
+01:26:47.9 |
HIP 63052 |
5.67 |
| 2026-05-27 12:00 |
12:55:28.40 |
+01:26:52.5 |
HIP 63052 |
5.29 |
| 2026-05-28 00:00 |
12:55:26.89 |
+01:26:56.9 |
HIP 63052 |
4.92 |
| 2026-05-28 12:00 |
12:55:25.40 |
+01:27:01.2 |
HIP 63052 |
4.56 |
| 2026-05-29 00:00 |
12:55:23.92 |
+01:27:05.4 |
HIP 63052 |
4.20 |
| 2026-05-29 12:00 |
12:55:22.46 |
+01:27:09.4 |
HIP 63052 |
3.85 |
| 2026-05-30 00:00 |
12:55:21.02 |
+01:27:13.3 |
HIP 63052 |
3.51 |
| 2026-05-30 12:00 |
12:55:19.60 |
+01:27:17.1 |
HIP 63052 |
3.18 |
| 2026-05-31 00:00 |
12:55:18.19 |
+01:27:20.7 |
HIP 63052 |
2.86 |
| 2026-05-31 12:00 |
12:55:16.80 |
+01:27:24.2 |
HIP 63052 |
2.56 |
| 2026-06-01 00:00 |
12:55:15.43 |
+01:27:27.6 |
HIP 63052 |
2.27 |
| 2026-06-01 12:00 |
12:55:14.08 |
+01:27:30.8 |
HIP 63052 |
2.01 |
| 2026-06-02 00:00 |
12:55:12.75 |
+01:27:33.9 |
HIP 63052 |
1.78 |