メタデータ
| 項目 |
値 |
| Designation |
C/2000 S5 |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2000-10-26T15:21:36Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:06Z |
| Obs used |
11 |
| NEO |
- |
| M1 |
9.900 |
| K1 |
15.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2000-10-10.0000000 |
| e |
1.00000000 |
| q (au) |
0.601800 |
| a (au) |
- |
| i (deg) |
53.820000 |
| Ω (om, deg) |
341.630000 |
| ω (w, deg) |
291.480000 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (10.131 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.131 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| 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) |
| 2026-07-29 00:00 |
05:33:36.39 |
+75:31:52.9 |
HIP 26702 |
28.75 |
| 2026-07-29 12:00 |
05:33:43.65 |
+75:32:12.6 |
HIP 26702 |
28.47 |
| 2026-07-30 00:00 |
05:33:50.86 |
+75:32:32.5 |
HIP 26702 |
28.21 |
| 2026-07-30 12:00 |
05:33:58.03 |
+75:32:52.5 |
HIP 26702 |
27.96 |
| 2026-07-31 00:00 |
05:34:05.14 |
+75:33:12.7 |
HIP 26702 |
27.73 |
| 2026-07-31 12:00 |
05:34:12.20 |
+75:33:33.1 |
HIP 26702 |
27.51 |
| 2026-08-01 00:00 |
05:34:19.22 |
+75:33:53.6 |
HIP 26702 |
27.30 |
| 2026-08-01 12:00 |
05:34:26.18 |
+75:34:14.2 |
HIP 26702 |
27.11 |
| 2026-08-02 00:00 |
05:34:33.10 |
+75:34:35.0 |
HIP 26702 |
26.93 |
| 2026-08-02 12:00 |
05:34:39.96 |
+75:34:56.0 |
HIP 26702 |
26.77 |
| 2026-08-03 00:00 |
05:34:46.77 |
+75:35:17.1 |
HIP 26702 |
26.62 |
| 2026-08-03 12:00 |
05:34:53.53 |
+75:35:38.4 |
HIP 26702 |
26.49 |
| 2026-08-04 00:00 |
05:35:00.23 |
+75:35:59.8 |
HIP 26702 |
26.37 |
| 2026-08-04 12:00 |
05:35:06.89 |
+75:36:21.3 |
HIP 26702 |
26.26 |
| 2026-08-05 00:00 |
05:35:13.48 |
+75:36:43.0 |
HIP 26702 |
26.18 |
| 2026-08-05 12:00 |
05:35:20.03 |
+75:37:04.9 |
HIP 26702 |
26.11 |
| 2026-08-06 00:00 |
05:35:26.52 |
+75:37:26.9 |
HIP 26702 |
26.05 |
| 2026-08-06 12:00 |
05:35:32.95 |
+75:37:49.1 |
HIP 26702 |
26.01 |
| 2026-08-07 00:00 |
05:35:39.33 |
+75:38:11.3 |
HIP 26702 |
25.99 |
| 2026-08-07 12:00 |
05:35:45.65 |
+75:38:33.8 |
HIP 26702 |
25.98 |
| 2026-08-08 00:00 |
05:35:51.92 |
+75:38:56.3 |
HIP 26702 |
25.98 |
| 2026-08-08 12:00 |
05:35:58.13 |
+75:39:19.1 |
HIP 26702 |
26.01 |
| 2026-08-09 00:00 |
05:36:04.28 |
+75:39:41.9 |
HIP 26702 |
26.05 |
| 2026-08-09 12:00 |
05:36:10.37 |
+75:40:04.9 |
HIP 26702 |
26.10 |
| 2026-08-10 00:00 |
05:36:16.41 |
+75:40:28.0 |
HIP 26702 |
26.17 |
| 2026-08-10 12:00 |
05:36:22.38 |
+75:40:51.3 |
HIP 26702 |
26.25 |
| 2026-08-11 00:00 |
05:36:28.30 |
+75:41:14.7 |
HIP 26702 |
26.35 |
| 2026-08-11 12:00 |
05:36:34.15 |
+75:41:38.2 |
HIP 26702 |
26.47 |
| 2026-08-12 00:00 |
05:36:39.95 |
+75:42:01.8 |
HIP 26702 |
26.60 |
| 2026-08-12 12:00 |
05:36:45.68 |
+75:42:25.6 |
HIP 26702 |
26.74 |
| 2026-08-13 00:00 |
05:36:51.35 |
+75:42:49.5 |
HIP 26702 |
26.89 |
| 2026-08-13 12:00 |
05:36:56.96 |
+75:43:13.6 |
HIP 26702 |
27.06 |
| 2026-08-14 00:00 |
05:37:02.50 |
+75:43:37.7 |
HIP 26702 |
27.25 |
| 2026-08-14 12:00 |
05:37:07.99 |
+75:44:02.0 |
HIP 26702 |
27.44 |
| 2026-08-15 00:00 |
05:37:13.40 |
+75:44:26.4 |
HIP 26702 |
27.65 |
| 2026-08-15 12:00 |
05:37:18.76 |
+75:44:51.0 |
HIP 26702 |
27.87 |
| 2026-08-16 00:00 |
05:37:24.05 |
+75:45:15.6 |
HIP 26702 |
28.11 |
| 2026-08-16 12:00 |
05:37:29.27 |
+75:45:40.4 |
HIP 26702 |
28.35 |
| 2026-08-17 00:00 |
05:37:34.43 |
+75:46:05.3 |
HIP 26702 |
28.60 |
| 2026-08-17 12:00 |
05:37:39.52 |
+75:46:30.3 |
HIP 26702 |
28.87 |
| 2026-08-18 00:00 |
05:37:44.55 |
+75:46:55.4 |
HIP 26702 |
29.15 |
| 2026-08-18 12:00 |
05:37:49.51 |
+75:47:20.6 |
HIP 26702 |
29.43 |
| 2026-08-19 00:00 |
05:37:54.41 |
+75:47:45.9 |
HIP 26702 |
29.73 |