| Parameter |
Value |
| Designation |
C/2002 B1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-20T00:07:40.019520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:13Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
24.250 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2002-02-09.0000000 |
| e |
0.77101055 |
| q (au) |
2.271129 |
| a (au) |
9.918053 |
| i (deg) |
51.021341 |
| Ω (om, deg) |
58.185425 |
| ω (w, deg) |
76.158399 |
| M (ma, deg) |
357.791001 |
Magnitude
Scatter + Global Linear
$$
M_a = (9.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
9.865 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
01:11:48.27 |
-47:36:50.7 |
HIP 5545 |
7.51 |
| 2026-06-01 12:00 |
01:11:57.04 |
-47:37:38.0 |
HIP 5545 |
9.18 |
| 2026-06-02 00:00 |
01:12:05.74 |
-47:38:26.1 |
HIP 5545 |
10.85 |
| 2026-06-02 12:00 |
01:12:14.38 |
-47:39:14.9 |
HIP 5545 |
12.52 |
| 2026-06-03 00:00 |
01:12:22.95 |
-47:40:04.5 |
HIP 5545 |
14.18 |
| 2026-06-03 12:00 |
01:12:31.46 |
-47:40:54.8 |
HIP 5545 |
15.83 |
| 2026-06-04 00:00 |
01:12:39.90 |
-47:41:45.8 |
HIP 5545 |
17.48 |
| 2026-06-04 12:00 |
01:12:48.27 |
-47:42:37.6 |
HIP 5545 |
19.13 |
| 2026-06-05 00:00 |
01:12:56.57 |
-47:43:30.1 |
HIP 5545 |
20.78 |
| 2026-06-05 12:00 |
01:13:04.81 |
-47:44:23.4 |
HIP 5545 |
22.42 |
| 2026-06-06 00:00 |
01:13:12.98 |
-47:45:17.4 |
HIP 5545 |
24.05 |
| 2026-06-06 12:00 |
01:13:21.08 |
-47:46:12.1 |
HIP 5545 |
25.68 |
| 2026-06-07 00:00 |
01:13:29.11 |
-47:47:07.5 |
HIP 5545 |
27.31 |
| 2026-06-07 12:00 |
01:13:37.07 |
-47:48:03.6 |
HIP 5809 |
28.60 |
| 2026-06-08 00:00 |
01:13:44.95 |
-47:49:00.5 |
HIP 5809 |
27.29 |
| 2026-06-08 12:00 |
01:13:52.77 |
-47:49:58.1 |
HIP 5809 |
26.01 |
| 2026-06-09 00:00 |
01:14:00.51 |
-47:50:56.4 |
HIP 5809 |
24.76 |
| 2026-06-09 12:00 |
01:14:08.18 |
-47:51:55.4 |
HIP 5809 |
23.55 |
| 2026-06-10 00:00 |
01:14:15.78 |
-47:52:55.2 |
HIP 5809 |
22.38 |
| 2026-06-10 12:00 |
01:14:23.31 |
-47:53:55.6 |
HIP 5809 |
21.25 |
| 2026-06-11 00:00 |
01:14:30.76 |
-47:54:56.7 |
HIP 5809 |
20.18 |
| 2026-06-11 12:00 |
01:14:38.13 |
-47:55:58.6 |
HIP 5809 |
19.17 |
| 2026-06-12 00:00 |
01:14:45.43 |
-47:57:01.1 |
HIP 5809 |
18.23 |
| 2026-06-12 12:00 |
01:14:52.65 |
-47:58:04.3 |
HIP 5809 |
17.38 |
| 2026-06-13 00:00 |
01:14:59.80 |
-47:59:08.2 |
HIP 5809 |
16.63 |
| 2026-06-13 12:00 |
01:15:06.86 |
-48:00:12.8 |
HIP 5809 |
15.98 |
| 2026-06-14 00:00 |
01:15:13.85 |
-48:01:18.1 |
HIP 5809 |
15.45 |
| 2026-06-14 12:00 |
01:15:20.77 |
-48:02:24.0 |
HIP 5809 |
15.06 |
| 2026-06-15 00:00 |
01:15:27.60 |
-48:03:30.6 |
HIP 5809 |
14.82 |
| 2026-06-15 12:00 |
01:15:34.35 |
-48:04:37.9 |
HIP 5809 |
14.72 |
| 2026-06-16 00:00 |
01:15:41.02 |
-48:05:45.9 |
HIP 5809 |
14.78 |
| 2026-06-16 12:00 |
01:15:47.61 |
-48:06:54.5 |
HIP 5809 |
14.99 |
| 2026-06-17 00:00 |
01:15:54.12 |
-48:08:03.7 |
HIP 5809 |
15.34 |
| 2026-06-17 12:00 |
01:16:00.55 |
-48:09:13.6 |
HIP 5809 |
15.83 |
| 2026-06-18 00:00 |
01:16:06.89 |
-48:10:24.2 |
HIP 5809 |
16.43 |
| 2026-06-18 12:00 |
01:16:13.16 |
-48:11:35.4 |
HIP 5809 |
17.15 |
| 2026-06-19 00:00 |
01:16:19.33 |
-48:12:47.2 |
HIP 6075 |
17.06 |
| 2026-06-19 12:00 |
01:16:25.43 |
-48:13:59.6 |
HIP 6075 |
16.39 |
| 2026-06-20 00:00 |
01:16:31.44 |
-48:15:12.7 |
HIP 6075 |
15.87 |
| 2026-06-20 12:00 |
01:16:37.36 |
-48:16:26.3 |
HIP 6075 |
15.51 |
| 2026-06-21 00:00 |
01:16:43.20 |
-48:17:40.6 |
HIP 6075 |
15.33 |
| 2026-06-21 12:00 |
01:16:48.96 |
-48:18:55.5 |
HIP 6075 |
15.32 |
| 2026-06-22 00:00 |
01:16:54.63 |
-48:20:11.0 |
HIP 6075 |
15.49 |