| 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) |
| 2026-03-26 00:00 |
13:00:05.11 |
+01:03:40.9 |
HIP 63560 |
34.83 |
| 2026-03-26 12:00 |
13:00:02.66 |
+01:03:56.2 |
HIP 63560 |
35.01 |
| 2026-03-27 00:00 |
13:00:00.20 |
+01:04:11.5 |
HIP 63560 |
35.20 |
| 2026-03-27 12:00 |
12:59:57.74 |
+01:04:26.9 |
HIP 63560 |
35.40 |
| 2026-03-28 00:00 |
12:59:55.27 |
+01:04:42.1 |
HIP 63560 |
35.62 |
| 2026-03-28 12:00 |
12:59:52.80 |
+01:04:57.4 |
HIP 63560 |
35.85 |
| 2026-03-29 00:00 |
12:59:50.33 |
+01:05:12.6 |
HIP 63560 |
36.09 |
| 2026-03-29 12:00 |
12:59:47.86 |
+01:05:27.8 |
HIP 63560 |
36.34 |
| 2026-03-30 00:00 |
12:59:45.38 |
+01:05:43.0 |
HIP 63560 |
36.60 |
| 2026-03-30 12:00 |
12:59:42.90 |
+01:05:58.1 |
HIP 63560 |
36.88 |
| 2026-03-31 00:00 |
12:59:40.41 |
+01:06:13.3 |
HIP 63560 |
37.16 |
| 2026-03-31 12:00 |
12:59:37.93 |
+01:06:28.3 |
HIP 63560 |
37.46 |
| 2026-04-01 00:00 |
12:59:35.44 |
+01:06:43.4 |
HIP 63235 |
37.43 |
| 2026-04-01 12:00 |
12:59:32.95 |
+01:06:58.4 |
HIP 63235 |
36.77 |
| 2026-04-02 00:00 |
12:59:30.46 |
+01:07:13.4 |
HIP 63235 |
36.10 |
| 2026-04-02 12:00 |
12:59:27.97 |
+01:07:28.3 |
HIP 63235 |
35.44 |
| 2026-04-03 00:00 |
12:59:25.48 |
+01:07:43.2 |
HIP 63235 |
34.78 |
| 2026-04-03 12:00 |
12:59:22.98 |
+01:07:58.0 |
HIP 63235 |
34.12 |
| 2026-04-04 00:00 |
12:59:20.49 |
+01:08:12.9 |
HIP 63235 |
33.46 |
| 2026-04-04 12:00 |
12:59:17.99 |
+01:08:27.6 |
HIP 63235 |
32.80 |
| 2026-04-05 00:00 |
12:59:15.49 |
+01:08:42.4 |
HIP 63235 |
32.14 |
| 2026-04-05 12:00 |
12:59:13.00 |
+01:08:57.1 |
HIP 63235 |
31.48 |
| 2026-04-06 00:00 |
12:59:10.50 |
+01:09:11.7 |
HIP 63235 |
30.82 |
| 2026-04-06 12:00 |
12:59:08.00 |
+01:09:26.3 |
HIP 63235 |
30.16 |
| 2026-04-07 00:00 |
12:59:05.51 |
+01:09:40.8 |
HIP 63235 |
29.51 |
| 2026-04-07 12:00 |
12:59:03.01 |
+01:09:55.3 |
HIP 63235 |
28.85 |
| 2026-04-08 00:00 |
12:59:00.51 |
+01:10:09.8 |
HIP 63235 |
28.20 |
| 2026-04-08 12:00 |
12:58:58.02 |
+01:10:24.2 |
HIP 63235 |
27.54 |
| 2026-04-09 00:00 |
12:58:55.52 |
+01:10:38.5 |
HIP 63235 |
26.89 |
| 2026-04-09 12:00 |
12:58:53.03 |
+01:10:52.8 |
HIP 63235 |
26.24 |
| 2026-04-10 00:00 |
12:58:50.54 |
+01:11:07.0 |
HIP 63235 |
25.60 |
| 2026-04-10 12:00 |
12:58:48.05 |
+01:11:21.2 |
HIP 63235 |
24.95 |
| 2026-04-11 00:00 |
12:58:45.56 |
+01:11:35.3 |
HIP 63235 |
24.31 |
| 2026-04-11 12:00 |
12:58:43.08 |
+01:11:49.4 |
HIP 63235 |
23.67 |
| 2026-04-12 00:00 |
12:58:40.60 |
+01:12:03.4 |
HIP 63235 |
23.03 |
| 2026-04-12 12:00 |
12:58:38.11 |
+01:12:17.3 |
HIP 63235 |
22.39 |
| 2026-04-13 00:00 |
12:58:35.64 |
+01:12:31.2 |
HIP 63235 |
21.76 |
| 2026-04-13 12:00 |
12:58:33.16 |
+01:12:45.0 |
HIP 63235 |
21.13 |
| 2026-04-14 00:00 |
12:58:30.69 |
+01:12:58.7 |
HIP 63235 |
20.50 |
| 2026-04-14 12:00 |
12:58:28.22 |
+01:13:12.4 |
HIP 63235 |
19.87 |
| 2026-04-15 00:00 |
12:58:25.75 |
+01:13:26.0 |
HIP 63235 |
19.25 |
| 2026-04-15 12:00 |
12:58:23.29 |
+01:13:39.6 |
HIP 63235 |
18.64 |
| 2026-04-16 00:00 |
12:58:20.84 |
+01:13:53.0 |
HIP 63235 |
18.02 |