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) |
| 2026-06-01 00:00 |
05:16:19.29 |
+75:15:08.0 |
HIP 24194 |
18.84 |
| 2026-06-01 12:00 |
05:16:28.74 |
+75:15:04.7 |
HIP 24194 |
19.42 |
| 2026-06-02 00:00 |
05:16:38.21 |
+75:15:01.7 |
HIP 24194 |
20.01 |
| 2026-06-02 12:00 |
05:16:47.68 |
+75:14:58.8 |
HIP 25071 |
20.42 |
| 2026-06-03 00:00 |
05:16:57.17 |
+75:14:56.2 |
HIP 25071 |
19.81 |
| 2026-06-03 12:00 |
05:17:06.66 |
+75:14:53.8 |
HIP 25071 |
19.21 |
| 2026-06-04 00:00 |
05:17:16.16 |
+75:14:51.6 |
HIP 25071 |
18.61 |
| 2026-06-04 12:00 |
05:17:25.68 |
+75:14:49.6 |
HIP 25071 |
18.00 |
| 2026-06-05 00:00 |
05:17:35.19 |
+75:14:47.8 |
HIP 25071 |
17.40 |
| 2026-06-05 12:00 |
05:17:44.72 |
+75:14:46.3 |
HIP 25071 |
16.80 |
| 2026-06-06 00:00 |
05:17:54.25 |
+75:14:44.9 |
HIP 25071 |
16.20 |
| 2026-06-06 12:00 |
05:18:03.79 |
+75:14:43.8 |
HIP 25071 |
15.60 |
| 2026-06-07 00:00 |
05:18:13.34 |
+75:14:42.9 |
HIP 25071 |
15.00 |
| 2026-06-07 12:00 |
05:18:22.89 |
+75:14:42.2 |
HIP 25071 |
14.40 |
| 2026-06-08 00:00 |
05:18:32.44 |
+75:14:41.7 |
HIP 25071 |
13.80 |
| 2026-06-08 12:00 |
05:18:42.00 |
+75:14:41.5 |
HIP 25071 |
13.21 |
| 2026-06-09 00:00 |
05:18:51.57 |
+75:14:41.4 |
HIP 25071 |
12.61 |
| 2026-06-09 12:00 |
05:19:01.13 |
+75:14:41.6 |
HIP 25071 |
12.02 |
| 2026-06-10 00:00 |
05:19:10.70 |
+75:14:42.0 |
HIP 25071 |
11.43 |
| 2026-06-10 12:00 |
05:19:20.27 |
+75:14:42.6 |
HIP 25071 |
10.85 |
| 2026-06-11 00:00 |
05:19:29.85 |
+75:14:43.4 |
HIP 25071 |
10.26 |
| 2026-06-11 12:00 |
05:19:39.42 |
+75:14:44.4 |
HIP 25071 |
9.69 |
| 2026-06-12 00:00 |
05:19:48.99 |
+75:14:45.7 |
HIP 25071 |
9.12 |
| 2026-06-12 12:00 |
05:19:58.57 |
+75:14:47.2 |
HIP 25071 |
8.55 |
| 2026-06-13 00:00 |
05:20:08.14 |
+75:14:48.8 |
HIP 25071 |
7.99 |
| 2026-06-13 12:00 |
05:20:17.72 |
+75:14:50.7 |
HIP 25071 |
7.45 |
| 2026-06-14 00:00 |
05:20:27.29 |
+75:14:52.9 |
HIP 25071 |
6.91 |
| 2026-06-14 12:00 |
05:20:36.86 |
+75:14:55.2 |
HIP 25071 |
6.39 |
| 2026-06-15 00:00 |
05:20:46.42 |
+75:14:57.7 |
HIP 25071 |
5.90 |
| 2026-06-15 12:00 |
05:20:55.99 |
+75:15:00.5 |
HIP 25071 |
5.42 |
| 2026-06-16 00:00 |
05:21:05.55 |
+75:15:03.5 |
HIP 25071 |
4.99 |
| 2026-06-16 12:00 |
05:21:15.10 |
+75:15:06.6 |
HIP 25071 |
4.59 |
| 2026-06-17 00:00 |
05:21:24.65 |
+75:15:10.0 |
HIP 25071 |
4.25 |
| 2026-06-17 12:00 |
05:21:34.19 |
+75:15:13.7 |
HIP 25071 |
3.97 |
| 2026-06-18 00:00 |
05:21:43.73 |
+75:15:17.5 |
HIP 25071 |
3.78 |
| 2026-06-18 12:00 |
05:21:53.26 |
+75:15:21.5 |
HIP 25071 |
3.69 |
| 2026-06-19 00:00 |
05:22:02.78 |
+75:15:25.8 |
HIP 25071 |
3.70 |
| 2026-06-19 12:00 |
05:22:12.30 |
+75:15:30.3 |
HIP 25071 |
3.81 |
| 2026-06-20 00:00 |
05:22:21.81 |
+75:15:34.9 |
HIP 25071 |
4.02 |
| 2026-06-20 12:00 |
05:22:31.30 |
+75:15:39.8 |
HIP 25071 |
4.30 |
| 2026-06-21 00:00 |
05:22:40.79 |
+75:15:44.9 |
HIP 25071 |
4.66 |
| 2026-06-21 12:00 |
05:22:50.27 |
+75:15:50.2 |
HIP 25071 |
5.06 |
| 2026-06-22 00:00 |
05:22:59.74 |
+75:15:55.8 |
HIP 25071 |
5.51 |