メタデータ
| 項目 |
値 |
| 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 |
オスキュレーティング軌道要素
| 項目 |
値 |
| 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 |
等級
散乱 + 全体線形
$$
M_a = (9.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.865 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
10.000 |
| パラメータ |
記号 |
範囲 |
説明 |
| 太陽・地球距離が1 AUのときの絶対等級 |
H0 |
-5 to 20 |
彗星の固有の明るさ |
| 測光スロープパラメータ |
n |
2 to 6 |
太陽距離に対する明るさ変化率 |
| 前方散乱非対称係数 |
gf |
0.8 to 1 |
前方散乱の強さ |
| 後方散乱非対称係数 |
gb |
-1 to -0.5 |
後方散乱の強さ |
| 分配係数 |
k |
0.8 to 1 |
前方/後方散乱の寄与比 |
| ダスト/ガス明るさ比 |
δ90 |
1 to 10 |
ダスト散乱とガス放射の相対寄与 |
参考: EPSC-DPS2025-160
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
01:19:25.58 |
-50:13:56.0 |
HIP 6063 |
30.39 |
| 2026-07-29 12:00 |
01:19:23.66 |
-50:15:38.0 |
HIP 6063 |
31.72 |
| 2026-07-30 00:00 |
01:19:21.63 |
-50:17:20.0 |
HIP 6063 |
33.07 |
| 2026-07-30 12:00 |
01:19:19.49 |
-50:19:02.1 |
HIP 6063 |
34.45 |
| 2026-07-31 00:00 |
01:19:17.24 |
-50:20:44.2 |
HIP 6063 |
35.86 |
| 2026-07-31 12:00 |
01:19:14.87 |
-50:22:26.3 |
HIP 6063 |
37.28 |
| 2026-08-01 00:00 |
01:19:12.40 |
-50:24:08.4 |
HIP 6336 |
38.31 |
| 2026-08-01 12:00 |
01:19:09.81 |
-50:25:50.5 |
HIP 6336 |
37.13 |
| 2026-08-02 00:00 |
01:19:07.11 |
-50:27:32.6 |
HIP 6336 |
36.00 |
| 2026-08-02 12:00 |
01:19:04.30 |
-50:29:14.7 |
HIP 6336 |
34.94 |
| 2026-08-03 00:00 |
01:19:01.38 |
-50:30:56.8 |
HIP 6046 |
33.60 |
| 2026-08-03 12:00 |
01:18:58.35 |
-50:32:38.8 |
HIP 6046 |
31.84 |
| 2026-08-04 00:00 |
01:18:55.20 |
-50:34:20.7 |
HIP 6046 |
30.08 |
| 2026-08-04 12:00 |
01:18:51.95 |
-50:36:02.7 |
HIP 6046 |
28.32 |
| 2026-08-05 00:00 |
01:18:48.58 |
-50:37:44.5 |
HIP 6046 |
26.55 |
| 2026-08-05 12:00 |
01:18:45.10 |
-50:39:26.3 |
HIP 6046 |
24.77 |
| 2026-08-06 00:00 |
01:18:41.50 |
-50:41:08.0 |
HIP 6046 |
22.99 |
| 2026-08-06 12:00 |
01:18:37.80 |
-50:42:49.6 |
HIP 6046 |
21.21 |
| 2026-08-07 00:00 |
01:18:33.98 |
-50:44:31.1 |
HIP 6046 |
19.42 |
| 2026-08-07 12:00 |
01:18:30.05 |
-50:46:12.5 |
HIP 6046 |
17.63 |
| 2026-08-08 00:00 |
01:18:26.01 |
-50:47:53.7 |
HIP 6046 |
15.83 |
| 2026-08-08 12:00 |
01:18:21.86 |
-50:49:34.9 |
HIP 6046 |
14.03 |
| 2026-08-09 00:00 |
01:18:17.60 |
-50:51:15.8 |
HIP 6046 |
12.23 |
| 2026-08-09 12:00 |
01:18:13.22 |
-50:52:56.6 |
HIP 6046 |
10.42 |
| 2026-08-10 00:00 |
01:18:08.74 |
-50:54:37.3 |
HIP 6046 |
8.61 |
| 2026-08-10 12:00 |
01:18:04.14 |
-50:56:17.8 |
HIP 6046 |
6.80 |
| 2026-08-11 00:00 |
01:17:59.43 |
-50:57:58.0 |
HIP 6046 |
5.00 |
| 2026-08-11 12:00 |
01:17:54.60 |
-50:59:38.1 |
HIP 6046 |
3.21 |
| 2026-08-12 00:00 |
01:17:49.67 |
-51:01:18.0 |
HIP 6046 |
1.52 |
| 2026-08-12 12:00 |
01:17:44.63 |
-51:02:57.6 |
HIP 6046 |
1.02 |
| 2026-08-13 00:00 |
01:17:39.47 |
-51:04:37.0 |
HIP 6046 |
2.56 |
| 2026-08-13 12:00 |
01:17:34.21 |
-51:06:16.2 |
HIP 6046 |
4.34 |
| 2026-08-14 00:00 |
01:17:28.83 |
-51:07:55.1 |
HIP 6046 |
6.17 |
| 2026-08-14 12:00 |
01:17:23.35 |
-51:09:33.7 |
HIP 6046 |
8.00 |
| 2026-08-15 00:00 |
01:17:17.76 |
-51:11:12.1 |
HIP 6020 |
8.34 |
| 2026-08-15 12:00 |
01:17:12.05 |
-51:12:50.1 |
HIP 6020 |
6.83 |
| 2026-08-16 00:00 |
01:17:06.24 |
-51:14:27.9 |
HIP 6020 |
5.54 |
| 2026-08-16 12:00 |
01:17:00.32 |
-51:16:05.3 |
HIP 6020 |
4.68 |
| 2026-08-17 00:00 |
01:16:54.30 |
-51:17:42.4 |
HIP 6020 |
4.50 |
| 2026-08-17 12:00 |
01:16:48.16 |
-51:19:19.2 |
HIP 6020 |
5.07 |
| 2026-08-18 00:00 |
01:16:41.92 |
-51:20:55.7 |
HIP 6020 |
6.20 |
| 2026-08-18 12:00 |
01:16:35.57 |
-51:22:31.8 |
HIP 6020 |
7.64 |
| 2026-08-19 00:00 |
01:16:29.11 |
-51:24:07.5 |
HIP 6020 |
9.26 |