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) |
| 2026-09-20 00:00 |
05:23:58.06 |
+64:53:19.7 |
HIP 25305 |
10.81 |
| 2026-09-20 12:00 |
05:23:57.72 |
+64:53:33.8 |
HIP 25305 |
11.03 |
| 2026-09-21 00:00 |
05:23:57.35 |
+64:53:47.8 |
HIP 25305 |
11.25 |
| 2026-09-21 12:00 |
05:23:56.95 |
+64:54:01.8 |
HIP 25305 |
11.48 |
| 2026-09-22 00:00 |
05:23:56.52 |
+64:54:15.7 |
HIP 25305 |
11.70 |
| 2026-09-22 12:00 |
05:23:56.06 |
+64:54:29.7 |
HIP 25305 |
11.93 |
| 2026-09-23 00:00 |
05:23:55.57 |
+64:54:43.6 |
HIP 25305 |
12.16 |
| 2026-09-23 12:00 |
05:23:55.06 |
+64:54:57.5 |
HIP 25305 |
12.39 |
| 2026-09-24 00:00 |
05:23:54.51 |
+64:55:11.3 |
HIP 25305 |
12.63 |
| 2026-09-24 12:00 |
05:23:53.94 |
+64:55:25.2 |
HIP 25305 |
12.86 |
| 2026-09-25 00:00 |
05:23:53.34 |
+64:55:39.0 |
HIP 25305 |
13.10 |
| 2026-09-25 12:00 |
05:23:52.71 |
+64:55:52.8 |
HIP 25305 |
13.33 |
| 2026-09-26 00:00 |
05:23:52.05 |
+64:56:06.5 |
HIP 25046 |
13.34 |
| 2026-09-26 12:00 |
05:23:51.36 |
+64:56:20.3 |
HIP 25046 |
13.30 |
| 2026-09-27 00:00 |
05:23:50.64 |
+64:56:34.0 |
HIP 25046 |
13.26 |
| 2026-09-27 12:00 |
05:23:49.89 |
+64:56:47.6 |
HIP 25046 |
13.22 |
| 2026-09-28 00:00 |
05:23:49.12 |
+64:57:01.3 |
HIP 25046 |
13.19 |
| 2026-09-28 12:00 |
05:23:48.31 |
+64:57:14.8 |
HIP 25046 |
13.15 |
| 2026-09-29 00:00 |
05:23:47.48 |
+64:57:28.4 |
HIP 25046 |
13.12 |
| 2026-09-29 12:00 |
05:23:46.62 |
+64:57:41.9 |
HIP 25046 |
13.09 |
| 2026-09-30 00:00 |
05:23:45.73 |
+64:57:55.4 |
HIP 25046 |
13.06 |
| 2026-09-30 12:00 |
05:23:44.81 |
+64:58:08.9 |
HIP 25046 |
13.03 |
| 2026-10-01 00:00 |
05:23:43.86 |
+64:58:22.3 |
HIP 25046 |
13.00 |
| 2026-10-01 12:00 |
05:23:42.89 |
+64:58:35.6 |
HIP 25046 |
12.97 |
| 2026-10-02 00:00 |
05:23:41.88 |
+64:58:49.0 |
HIP 25046 |
12.95 |
| 2026-10-02 12:00 |
05:23:40.85 |
+64:59:02.3 |
HIP 25046 |
12.93 |
| 2026-10-03 00:00 |
05:23:39.79 |
+64:59:15.5 |
HIP 25046 |
12.90 |
| 2026-10-03 12:00 |
05:23:38.70 |
+64:59:28.7 |
HIP 25046 |
12.88 |
| 2026-10-04 00:00 |
05:23:37.58 |
+64:59:41.8 |
HIP 25046 |
12.87 |
| 2026-10-04 12:00 |
05:23:36.44 |
+64:59:54.9 |
HIP 25046 |
12.85 |
| 2026-10-05 00:00 |
05:23:35.26 |
+65:00:08.0 |
HIP 25046 |
12.84 |
| 2026-10-05 12:00 |
05:23:34.06 |
+65:00:21.0 |
HIP 25046 |
12.82 |
| 2026-10-06 00:00 |
05:23:32.83 |
+65:00:34.0 |
HIP 25046 |
12.81 |
| 2026-10-06 12:00 |
05:23:31.57 |
+65:00:46.9 |
HIP 25046 |
12.81 |
| 2026-10-07 00:00 |
05:23:30.28 |
+65:00:59.7 |
HIP 25046 |
12.80 |
| 2026-10-07 12:00 |
05:23:28.97 |
+65:01:12.5 |
HIP 25046 |
12.79 |
| 2026-10-08 00:00 |
05:23:27.62 |
+65:01:25.3 |
HIP 25046 |
12.79 |
| 2026-10-08 12:00 |
05:23:26.25 |
+65:01:38.0 |
HIP 25046 |
12.79 |
| 2026-10-09 00:00 |
05:23:24.85 |
+65:01:50.6 |
HIP 25046 |
12.79 |
| 2026-10-09 12:00 |
05:23:23.43 |
+65:02:03.2 |
HIP 25046 |
12.80 |
| 2026-10-10 00:00 |
05:23:21.97 |
+65:02:15.7 |
HIP 25046 |
12.81 |
| 2026-10-10 12:00 |
05:23:20.49 |
+65:02:28.1 |
HIP 25046 |
12.82 |
| 2026-10-11 00:00 |
05:23:18.98 |
+65:02:40.5 |
HIP 25046 |
12.83 |