| Parameter |
Value |
| Designation |
C/2002 B2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-04-06T19:53:33.659520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:13Z |
| Obs used |
52 |
| NEO |
- |
| M1 |
10.100 |
| K1 |
10.000 |
| PC |
0.030 |
Osculating Elements
| Parameter |
Value |
| Epoch (epoch_cal, TDB) |
2002-02-21.0000000 |
| e |
0.99722476 |
| q (au) |
3.842167 |
| a (au) |
1384.445431 |
| i (deg) |
152.872587 |
| Ω (om, deg) |
54.316972 |
| ω (w, deg) |
257.070080 |
| M (ma, deg) |
359.999142 |
Magnitude
Scatter + Global Linear
$$
M_a = (12.373 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
Model Parameters
| Parameter |
Value |
| H0 |
12.373 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
2.176 |
| 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 |
00:30:15.77 |
+22:41:41.4 |
HIP 2397 |
5.67 |
| 2026-06-01 12:00 |
00:30:16.83 |
+22:42:00.0 |
HIP 2397 |
5.28 |
| 2026-06-02 00:00 |
00:30:17.87 |
+22:42:18.4 |
HIP 2397 |
4.89 |
| 2026-06-02 12:00 |
00:30:18.89 |
+22:42:36.8 |
HIP 2397 |
4.50 |
| 2026-06-03 00:00 |
00:30:19.89 |
+22:42:55.1 |
HIP 2397 |
4.12 |
| 2026-06-03 12:00 |
00:30:20.87 |
+22:43:13.4 |
HIP 2397 |
3.74 |
| 2026-06-04 00:00 |
00:30:21.83 |
+22:43:31.7 |
HIP 2397 |
3.37 |
| 2026-06-04 12:00 |
00:30:22.77 |
+22:43:49.8 |
HIP 2397 |
2.99 |
| 2026-06-05 00:00 |
00:30:23.69 |
+22:44:07.9 |
HIP 2397 |
2.63 |
| 2026-06-05 12:00 |
00:30:24.59 |
+22:44:26.0 |
HIP 2397 |
2.26 |
| 2026-06-06 00:00 |
00:30:25.47 |
+22:44:44.0 |
HIP 2397 |
1.90 |
| 2026-06-06 12:00 |
00:30:26.33 |
+22:45:01.9 |
HIP 2397 |
1.55 |
| 2026-06-07 00:00 |
00:30:27.17 |
+22:45:19.7 |
HIP 2397 |
1.20 |
| 2026-06-07 12:00 |
00:30:27.99 |
+22:45:37.5 |
HIP 2397 |
0.86 |
| 2026-06-08 00:00 |
00:30:28.79 |
+22:45:55.2 |
HIP 2397 |
0.54 |
| 2026-06-08 12:00 |
00:30:29.57 |
+22:46:12.9 |
HIP 2397 |
0.31 |
| 2026-06-09 00:00 |
00:30:30.33 |
+22:46:30.4 |
HIP 2397 |
0.37 |
| 2026-06-09 12:00 |
00:30:31.06 |
+22:46:47.9 |
HIP 2397 |
0.64 |
| 2026-06-10 00:00 |
00:30:31.78 |
+22:47:05.3 |
HIP 2397 |
0.95 |
| 2026-06-10 12:00 |
00:30:32.47 |
+22:47:22.7 |
HIP 2397 |
1.27 |
| 2026-06-11 00:00 |
00:30:33.15 |
+22:47:40.0 |
HIP 2397 |
1.59 |
| 2026-06-11 12:00 |
00:30:33.80 |
+22:47:57.1 |
HIP 2397 |
1.91 |
| 2026-06-12 00:00 |
00:30:34.43 |
+22:48:14.3 |
HIP 2397 |
2.23 |
| 2026-06-12 12:00 |
00:30:35.04 |
+22:48:31.3 |
HIP 2397 |
2.54 |
| 2026-06-13 00:00 |
00:30:35.63 |
+22:48:48.2 |
HIP 2397 |
2.86 |
| 2026-06-13 12:00 |
00:30:36.20 |
+22:49:05.1 |
HIP 2397 |
3.17 |
| 2026-06-14 00:00 |
00:30:36.75 |
+22:49:21.9 |
HIP 2397 |
3.47 |
| 2026-06-14 12:00 |
00:30:37.27 |
+22:49:38.5 |
HIP 2397 |
3.77 |
| 2026-06-15 00:00 |
00:30:37.77 |
+22:49:55.1 |
HIP 2397 |
4.07 |
| 2026-06-15 12:00 |
00:30:38.25 |
+22:50:11.7 |
HIP 2397 |
4.37 |
| 2026-06-16 00:00 |
00:30:38.71 |
+22:50:28.1 |
HIP 2397 |
4.66 |
| 2026-06-16 12:00 |
00:30:39.15 |
+22:50:44.4 |
HIP 2397 |
4.95 |
| 2026-06-17 00:00 |
00:30:39.57 |
+22:51:00.6 |
HIP 2397 |
5.24 |
| 2026-06-17 12:00 |
00:30:39.96 |
+22:51:16.8 |
HIP 2397 |
5.52 |
| 2026-06-18 00:00 |
00:30:40.33 |
+22:51:32.8 |
HIP 2397 |
5.80 |
| 2026-06-18 12:00 |
00:30:40.68 |
+22:51:48.8 |
HIP 2397 |
6.08 |
| 2026-06-19 00:00 |
00:30:41.01 |
+22:52:04.6 |
HIP 2397 |
6.35 |
| 2026-06-19 12:00 |
00:30:41.31 |
+22:52:20.4 |
HIP 2397 |
6.62 |
| 2026-06-20 00:00 |
00:30:41.60 |
+22:52:36.0 |
HIP 2397 |
6.89 |
| 2026-06-20 12:00 |
00:30:41.86 |
+22:52:51.6 |
HIP 2397 |
7.16 |
| 2026-06-21 00:00 |
00:30:42.10 |
+22:53:07.0 |
HIP 2397 |
7.42 |
| 2026-06-21 12:00 |
00:30:42.31 |
+22:53:22.4 |
HIP 2397 |
7.67 |
| 2026-06-22 00:00 |
00:30:42.51 |
+22:53:37.6 |
HIP 2397 |
7.93 |