メタデータ
| 項目 |
値 |
| Designation |
C/2001 B1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-09-19T09:58:55.704000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:08Z |
| Obs used |
167 |
| NEO |
- |
| M1 |
12.500 |
| K1 |
4.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-07-30.0000000 |
| e |
1.00122950 |
| q (au) |
2.928437 |
| a (au) |
-2381.818640 |
| i (deg) |
104.111145 |
| Ω (om, deg) |
49.841263 |
| ω (w, deg) |
284.848753 |
| M (ma, deg) |
0.002659 |
等級
散乱 + 全体線形
$$
M_a = (13.343 + 2.688\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.343 |
| n |
2.688 |
| gf |
1.000 |
| gb |
-0.669 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
21:09:02.40 |
+60:34:36.2 |
HIP 104247 |
13.43 |
| 2026-03-26 12:00 |
21:09:05.34 |
+60:35:06.1 |
HIP 104247 |
13.88 |
| 2026-03-27 00:00 |
21:09:08.26 |
+60:35:36.1 |
HIP 104247 |
14.33 |
| 2026-03-27 12:00 |
21:09:11.14 |
+60:36:06.3 |
HIP 104247 |
14.79 |
| 2026-03-28 00:00 |
21:09:13.99 |
+60:36:36.7 |
HIP 104247 |
15.26 |
| 2026-03-28 12:00 |
21:09:16.80 |
+60:37:07.2 |
HIP 104247 |
15.74 |
| 2026-03-29 00:00 |
21:09:19.58 |
+60:37:38.0 |
HIP 104422 |
16.08 |
| 2026-03-29 12:00 |
21:09:22.33 |
+60:38:08.9 |
HIP 104422 |
15.59 |
| 2026-03-30 00:00 |
21:09:25.05 |
+60:38:39.9 |
HIP 104422 |
15.11 |
| 2026-03-30 12:00 |
21:09:27.73 |
+60:39:11.2 |
HIP 104422 |
14.63 |
| 2026-03-31 00:00 |
21:09:30.38 |
+60:39:42.6 |
HIP 104422 |
14.17 |
| 2026-03-31 12:00 |
21:09:33.00 |
+60:40:14.1 |
HIP 104422 |
13.71 |
| 2026-04-01 00:00 |
21:09:35.58 |
+60:40:45.8 |
HIP 104422 |
13.26 |
| 2026-04-01 12:00 |
21:09:38.13 |
+60:41:17.7 |
HIP 104422 |
12.82 |
| 2026-04-02 00:00 |
21:09:40.64 |
+60:41:49.7 |
HIP 104422 |
12.40 |
| 2026-04-02 12:00 |
21:09:43.12 |
+60:42:21.9 |
HIP 104422 |
11.98 |
| 2026-04-03 00:00 |
21:09:45.57 |
+60:42:54.2 |
HIP 104422 |
11.58 |
| 2026-04-03 12:00 |
21:09:47.97 |
+60:43:26.6 |
HIP 104422 |
11.19 |
| 2026-04-04 00:00 |
21:09:50.35 |
+60:43:59.2 |
HIP 104422 |
10.83 |
| 2026-04-04 12:00 |
21:09:52.69 |
+60:44:32.0 |
HIP 104422 |
10.48 |
| 2026-04-05 00:00 |
21:09:54.99 |
+60:45:04.9 |
HIP 104422 |
10.15 |
| 2026-04-05 12:00 |
21:09:57.26 |
+60:45:37.9 |
HIP 104422 |
9.84 |
| 2026-04-06 00:00 |
21:09:59.49 |
+60:46:11.1 |
HIP 104422 |
9.56 |
| 2026-04-06 12:00 |
21:10:01.68 |
+60:46:44.4 |
HIP 104422 |
9.31 |
| 2026-04-07 00:00 |
21:10:03.84 |
+60:47:17.8 |
HIP 104422 |
9.09 |
| 2026-04-07 12:00 |
21:10:05.97 |
+60:47:51.4 |
HIP 104422 |
8.90 |
| 2026-04-08 00:00 |
21:10:08.05 |
+60:48:25.1 |
HIP 104422 |
8.74 |
| 2026-04-08 12:00 |
21:10:10.10 |
+60:48:58.9 |
HIP 104422 |
8.63 |
| 2026-04-09 00:00 |
21:10:12.11 |
+60:49:32.8 |
HIP 104422 |
8.54 |
| 2026-04-09 12:00 |
21:10:14.09 |
+60:50:06.9 |
HIP 104422 |
8.50 |
| 2026-04-10 00:00 |
21:10:16.03 |
+60:50:41.0 |
HIP 104422 |
8.50 |
| 2026-04-10 12:00 |
21:10:17.93 |
+60:51:15.3 |
HIP 104422 |
8.54 |
| 2026-04-11 00:00 |
21:10:19.79 |
+60:51:49.7 |
HIP 104422 |
8.61 |
| 2026-04-11 12:00 |
21:10:21.61 |
+60:52:24.2 |
HIP 104422 |
8.73 |
| 2026-04-12 00:00 |
21:10:23.40 |
+60:52:58.8 |
HIP 104422 |
8.88 |
| 2026-04-12 12:00 |
21:10:25.15 |
+60:53:33.6 |
HIP 104422 |
9.06 |
| 2026-04-13 00:00 |
21:10:26.86 |
+60:54:08.4 |
HIP 104422 |
9.28 |
| 2026-04-13 12:00 |
21:10:28.53 |
+60:54:43.3 |
HIP 104422 |
9.53 |
| 2026-04-14 00:00 |
21:10:30.16 |
+60:55:18.4 |
HIP 104422 |
9.80 |
| 2026-04-14 12:00 |
21:10:31.75 |
+60:55:53.5 |
HIP 104422 |
10.10 |
| 2026-04-15 00:00 |
21:10:33.31 |
+60:56:28.7 |
HIP 104422 |
10.43 |
| 2026-04-15 12:00 |
21:10:34.82 |
+60:57:04.0 |
HIP 104422 |
10.78 |
| 2026-04-16 00:00 |
21:10:36.29 |
+60:57:39.4 |
HIP 104422 |
11.14 |