C/1970 U1 (Suzuki-Sato-Seki)
メタデータ
| 項目 |
値 |
| Designation |
C/1970 U1 (Suzuki-Sato-Seki) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1970-10-01T19:05:27.113280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:19Z |
| Obs used |
47 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
18.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1970-10-31.0000000 |
| e |
1.00000000 |
| q (au) |
0.405493 |
| a (au) |
- |
| i (deg) |
60.785050 |
| Ω (om, deg) |
293.680878 |
| ω (w, deg) |
318.520987 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (8.314 + 3.396\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.314 |
| n |
3.396 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
1.000 |
| 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 |
05:11:50.02 |
+65:04:00.3 |
HIP 24375 |
14.20 |
| 2026-02-03 12:00 |
05:11:48.02 |
+65:03:47.2 |
HIP 24375 |
14.28 |
| 2026-02-04 00:00 |
05:11:46.04 |
+65:03:33.9 |
HIP 24375 |
14.36 |
| 2026-02-04 12:00 |
05:11:44.10 |
+65:03:20.6 |
HIP 24375 |
14.45 |
| 2026-02-05 00:00 |
05:11:42.18 |
+65:03:07.3 |
HIP 24375 |
14.53 |
| 2026-02-05 12:00 |
05:11:40.28 |
+65:02:53.9 |
HIP 24017 |
14.46 |
| 2026-02-06 00:00 |
05:11:38.41 |
+65:02:40.4 |
HIP 24017 |
14.17 |
| 2026-02-06 12:00 |
05:11:36.57 |
+65:02:26.9 |
HIP 24017 |
13.89 |
| 2026-02-07 00:00 |
05:11:34.76 |
+65:02:13.3 |
HIP 24017 |
13.61 |
| 2026-02-07 12:00 |
05:11:32.97 |
+65:01:59.6 |
HIP 24017 |
13.33 |
| 2026-02-08 00:00 |
05:11:31.21 |
+65:01:45.9 |
HIP 24017 |
13.06 |
| 2026-02-08 12:00 |
05:11:29.48 |
+65:01:32.2 |
HIP 24017 |
12.78 |
| 2026-02-09 00:00 |
05:11:27.77 |
+65:01:18.4 |
HIP 24017 |
12.51 |
| 2026-02-09 12:00 |
05:11:26.09 |
+65:01:04.5 |
HIP 24017 |
12.25 |
| 2026-02-10 00:00 |
05:11:24.44 |
+65:00:50.6 |
HIP 24017 |
11.98 |
| 2026-02-10 12:00 |
05:11:22.82 |
+65:00:36.6 |
HIP 24017 |
11.72 |
| 2026-02-11 00:00 |
05:11:21.22 |
+65:00:22.6 |
HIP 24017 |
11.47 |
| 2026-02-11 12:00 |
05:11:19.65 |
+65:00:08.6 |
HIP 24017 |
11.21 |
| 2026-02-12 00:00 |
05:11:18.11 |
+64:59:54.5 |
HIP 24017 |
10.97 |
| 2026-02-12 12:00 |
05:11:16.60 |
+64:59:40.3 |
HIP 24017 |
10.72 |
| 2026-02-13 00:00 |
05:11:15.12 |
+64:59:26.2 |
HIP 24017 |
10.48 |
| 2026-02-13 12:00 |
05:11:13.66 |
+64:59:11.9 |
HIP 24017 |
10.25 |
| 2026-02-14 00:00 |
05:11:12.23 |
+64:58:57.6 |
HIP 24017 |
10.02 |
| 2026-02-14 12:00 |
05:11:10.84 |
+64:58:43.3 |
HIP 24017 |
9.79 |
| 2026-02-15 00:00 |
05:11:09.47 |
+64:58:29.0 |
HIP 24017 |
9.57 |
| 2026-02-15 12:00 |
05:11:08.13 |
+64:58:14.6 |
HIP 24017 |
9.36 |
| 2026-02-16 00:00 |
05:11:06.81 |
+64:58:00.2 |
HIP 24017 |
9.15 |
| 2026-02-16 12:00 |
05:11:05.53 |
+64:57:45.7 |
HIP 24017 |
8.95 |
| 2026-02-17 00:00 |
05:11:04.28 |
+64:57:31.2 |
HIP 24017 |
8.76 |
| 2026-02-17 12:00 |
05:11:03.05 |
+64:57:16.7 |
HIP 24017 |
8.57 |
| 2026-02-18 00:00 |
05:11:01.86 |
+64:57:02.1 |
HIP 24017 |
8.39 |
| 2026-02-18 12:00 |
05:11:00.69 |
+64:56:47.5 |
HIP 24017 |
8.22 |
| 2026-02-19 00:00 |
05:10:59.55 |
+64:56:32.9 |
HIP 24017 |
8.06 |
| 2026-02-19 12:00 |
05:10:58.44 |
+64:56:18.3 |
HIP 24017 |
7.91 |
| 2026-02-20 00:00 |
05:10:57.37 |
+64:56:03.6 |
HIP 24017 |
7.76 |
| 2026-02-20 12:00 |
05:10:56.32 |
+64:55:48.9 |
HIP 24017 |
7.63 |
| 2026-02-21 00:00 |
05:10:55.30 |
+64:55:34.2 |
HIP 24017 |
7.51 |
| 2026-02-21 12:00 |
05:10:54.31 |
+64:55:19.4 |
HIP 24017 |
7.40 |
| 2026-02-22 00:00 |
05:10:53.35 |
+64:55:04.6 |
HIP 24017 |
7.29 |
| 2026-02-22 12:00 |
05:10:52.42 |
+64:54:49.8 |
HIP 24017 |
7.20 |
| 2026-02-23 00:00 |
05:10:51.52 |
+64:54:35.0 |
HIP 24017 |
7.13 |
| 2026-02-23 12:00 |
05:10:50.65 |
+64:54:20.2 |
HIP 24017 |
7.06 |
| 2026-02-24 00:00 |
05:10:49.80 |
+64:54:05.4 |
HIP 24017 |
7.01 |