C/1970 B1 (Daido-Fujikawa)
メタデータ
| 項目 |
値 |
| Designation |
C/1970 B1 (Daido-Fujikawa) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1970-02-15T19:19:12.423360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
32 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
12.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1970-02-04.0000000 |
| e |
1.00001913 |
| q (au) |
0.065746 |
| a (au) |
-3436.434080 |
| i (deg) |
100.182807 |
| Ω (om, deg) |
30.596034 |
| ω (w, deg) |
266.648729 |
| M (ma, deg) |
-0.000058 |
等級
散乱 + 全体線形
$$
M_a = (10.070 + 5.369\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.070 |
| n |
5.369 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-02-03 00:00 |
19:28:37.07 |
+58:45:36.4 |
HIP 95995 |
22.26 |
| 2026-02-03 12:00 |
19:28:39.61 |
+58:45:45.4 |
HIP 95995 |
22.04 |
| 2026-02-04 00:00 |
19:28:42.14 |
+58:45:54.5 |
HIP 95995 |
21.83 |
| 2026-02-04 12:00 |
19:28:44.66 |
+58:46:03.8 |
HIP 95995 |
21.62 |
| 2026-02-05 00:00 |
19:28:47.17 |
+58:46:13.3 |
HIP 95995 |
21.41 |
| 2026-02-05 12:00 |
19:28:49.68 |
+58:46:22.9 |
HIP 95995 |
21.22 |
| 2026-02-06 00:00 |
19:28:52.17 |
+58:46:32.7 |
HIP 95995 |
21.03 |
| 2026-02-06 12:00 |
19:28:54.65 |
+58:46:42.6 |
HIP 95995 |
20.85 |
| 2026-02-07 00:00 |
19:28:57.12 |
+58:46:52.7 |
HIP 95995 |
20.68 |
| 2026-02-07 12:00 |
19:28:59.58 |
+58:47:03.0 |
HIP 95995 |
20.51 |
| 2026-02-08 00:00 |
19:29:02.03 |
+58:47:13.4 |
HIP 95995 |
20.36 |
| 2026-02-08 12:00 |
19:29:04.47 |
+58:47:24.0 |
HIP 95995 |
20.21 |
| 2026-02-09 00:00 |
19:29:06.89 |
+58:47:34.8 |
HIP 95995 |
20.06 |
| 2026-02-09 12:00 |
19:29:09.31 |
+58:47:45.7 |
HIP 95995 |
19.93 |
| 2026-02-10 00:00 |
19:29:11.71 |
+58:47:56.7 |
HIP 95995 |
19.81 |
| 2026-02-10 12:00 |
19:29:14.10 |
+58:48:08.0 |
HIP 95995 |
19.69 |
| 2026-02-11 00:00 |
19:29:16.48 |
+58:48:19.3 |
HIP 95995 |
19.59 |
| 2026-02-11 12:00 |
19:29:18.85 |
+58:48:30.9 |
HIP 95995 |
19.49 |
| 2026-02-12 00:00 |
19:29:21.21 |
+58:48:42.6 |
HIP 95995 |
19.40 |
| 2026-02-12 12:00 |
19:29:23.55 |
+58:48:54.4 |
HIP 95995 |
19.32 |
| 2026-02-13 00:00 |
19:29:25.88 |
+58:49:06.4 |
HIP 95995 |
19.25 |
| 2026-02-13 12:00 |
19:29:28.20 |
+58:49:18.6 |
HIP 95995 |
19.19 |
| 2026-02-14 00:00 |
19:29:30.50 |
+58:49:30.9 |
HIP 95995 |
19.14 |
| 2026-02-14 12:00 |
19:29:32.79 |
+58:49:43.3 |
HIP 95995 |
19.10 |
| 2026-02-15 00:00 |
19:29:35.07 |
+58:49:55.9 |
HIP 95995 |
19.07 |
| 2026-02-15 12:00 |
19:29:37.33 |
+58:50:08.7 |
HIP 95995 |
19.05 |
| 2026-02-16 00:00 |
19:29:39.58 |
+58:50:21.6 |
HIP 95995 |
19.04 |
| 2026-02-16 12:00 |
19:29:41.82 |
+58:50:34.6 |
HIP 95995 |
19.04 |
| 2026-02-17 00:00 |
19:29:44.04 |
+58:50:47.8 |
HIP 95995 |
19.05 |
| 2026-02-17 12:00 |
19:29:46.25 |
+58:51:01.1 |
HIP 95995 |
19.07 |
| 2026-02-18 00:00 |
19:29:48.44 |
+58:51:14.6 |
HIP 95995 |
19.10 |
| 2026-02-18 12:00 |
19:29:50.62 |
+58:51:28.2 |
HIP 95995 |
19.14 |
| 2026-02-19 00:00 |
19:29:52.79 |
+58:51:42.0 |
HIP 95995 |
19.19 |
| 2026-02-19 12:00 |
19:29:54.94 |
+58:51:55.9 |
HIP 95995 |
19.25 |
| 2026-02-20 00:00 |
19:29:57.07 |
+58:52:09.9 |
HIP 95995 |
19.32 |
| 2026-02-20 12:00 |
19:29:59.19 |
+58:52:24.1 |
HIP 95995 |
19.40 |
| 2026-02-21 00:00 |
19:30:01.29 |
+58:52:38.4 |
HIP 95995 |
19.48 |
| 2026-02-21 12:00 |
19:30:03.38 |
+58:52:52.8 |
HIP 95995 |
19.58 |
| 2026-02-22 00:00 |
19:30:05.45 |
+58:53:07.4 |
HIP 95995 |
19.69 |
| 2026-02-22 12:00 |
19:30:07.51 |
+58:53:22.1 |
HIP 95995 |
19.80 |
| 2026-02-23 00:00 |
19:30:09.55 |
+58:53:37.0 |
HIP 95995 |
19.93 |
| 2026-02-23 12:00 |
19:30:11.57 |
+58:53:51.9 |
HIP 95995 |
20.06 |
| 2026-02-24 00:00 |
19:30:13.58 |
+58:54:07.0 |
HIP 95995 |
20.20 |