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) |
| 2026-09-20 00:00 |
05:40:31.29 |
+76:17:21.1 |
HIP 26662 |
4.86 |
| 2026-09-20 12:00 |
05:40:31.06 |
+76:17:49.9 |
HIP 26662 |
4.41 |
| 2026-09-21 00:00 |
05:40:30.74 |
+76:18:18.8 |
HIP 26662 |
3.97 |
| 2026-09-21 12:00 |
05:40:30.33 |
+76:18:47.6 |
HIP 26662 |
3.54 |
| 2026-09-22 00:00 |
05:40:29.84 |
+76:19:16.4 |
HIP 26662 |
3.12 |
| 2026-09-22 12:00 |
05:40:29.25 |
+76:19:45.2 |
HIP 26662 |
2.71 |
| 2026-09-23 00:00 |
05:40:28.58 |
+76:20:14.0 |
HIP 26662 |
2.33 |
| 2026-09-23 12:00 |
05:40:27.82 |
+76:20:42.7 |
HIP 26662 |
1.99 |
| 2026-09-24 00:00 |
05:40:26.98 |
+76:21:11.5 |
HIP 26662 |
1.72 |
| 2026-09-24 12:00 |
05:40:26.04 |
+76:21:40.2 |
HIP 26662 |
1.55 |
| 2026-09-25 00:00 |
05:40:25.01 |
+76:22:08.9 |
HIP 26662 |
1.51 |
| 2026-09-25 12:00 |
05:40:23.90 |
+76:22:37.5 |
HIP 26662 |
1.61 |
| 2026-09-26 00:00 |
05:40:22.70 |
+76:23:06.1 |
HIP 26662 |
1.84 |
| 2026-09-26 12:00 |
05:40:21.41 |
+76:23:34.7 |
HIP 26662 |
2.14 |
| 2026-09-27 00:00 |
05:40:20.02 |
+76:24:03.3 |
HIP 26662 |
2.50 |
| 2026-09-27 12:00 |
05:40:18.55 |
+76:24:31.8 |
HIP 26662 |
2.90 |
| 2026-09-28 00:00 |
05:40:16.99 |
+76:25:00.3 |
HIP 26662 |
3.31 |
| 2026-09-28 12:00 |
05:40:15.34 |
+76:25:28.7 |
HIP 26662 |
3.74 |
| 2026-09-29 00:00 |
05:40:13.61 |
+76:25:57.1 |
HIP 26662 |
4.18 |
| 2026-09-29 12:00 |
05:40:11.78 |
+76:26:25.4 |
HIP 26662 |
4.63 |
| 2026-09-30 00:00 |
05:40:09.86 |
+76:26:53.7 |
HIP 26662 |
5.08 |
| 2026-09-30 12:00 |
05:40:07.85 |
+76:27:21.9 |
HIP 26662 |
5.54 |
| 2026-10-01 00:00 |
05:40:05.75 |
+76:27:50.1 |
HIP 26662 |
6.00 |
| 2026-10-01 12:00 |
05:40:03.57 |
+76:28:18.3 |
HIP 26662 |
6.46 |
| 2026-10-02 00:00 |
05:40:01.29 |
+76:28:46.3 |
HIP 26662 |
6.93 |
| 2026-10-02 12:00 |
05:39:58.92 |
+76:29:14.4 |
HIP 26848 |
7.25 |
| 2026-10-03 00:00 |
05:39:56.46 |
+76:29:42.3 |
HIP 26848 |
7.49 |
| 2026-10-03 12:00 |
05:39:53.91 |
+76:30:10.2 |
HIP 26848 |
7.76 |
| 2026-10-04 00:00 |
05:39:51.27 |
+76:30:38.0 |
HIP 26848 |
8.05 |
| 2026-10-04 12:00 |
05:39:48.54 |
+76:31:05.8 |
HIP 26848 |
8.36 |
| 2026-10-05 00:00 |
05:39:45.72 |
+76:31:33.5 |
HIP 26848 |
8.70 |
| 2026-10-05 12:00 |
05:39:42.81 |
+76:32:01.1 |
HIP 26848 |
9.05 |
| 2026-10-06 00:00 |
05:39:39.81 |
+76:32:28.6 |
HIP 26848 |
9.42 |
| 2026-10-06 12:00 |
05:39:36.72 |
+76:32:56.1 |
HIP 26848 |
9.80 |
| 2026-10-07 00:00 |
05:39:33.54 |
+76:33:23.5 |
HIP 26848 |
10.19 |
| 2026-10-07 12:00 |
05:39:30.27 |
+76:33:50.8 |
HIP 26848 |
10.60 |
| 2026-10-08 00:00 |
05:39:26.91 |
+76:34:18.0 |
HIP 26848 |
11.02 |
| 2026-10-08 12:00 |
05:39:23.45 |
+76:34:45.1 |
HIP 26848 |
11.45 |
| 2026-10-09 00:00 |
05:39:19.91 |
+76:35:12.1 |
HIP 26673 |
11.12 |
| 2026-10-09 12:00 |
05:39:16.28 |
+76:35:39.1 |
HIP 26673 |
10.74 |
| 2026-10-10 00:00 |
05:39:12.55 |
+76:36:05.9 |
HIP 26673 |
10.37 |
| 2026-10-10 12:00 |
05:39:08.74 |
+76:36:32.7 |
HIP 26673 |
10.02 |
| 2026-10-11 00:00 |
05:39:04.84 |
+76:36:59.3 |
HIP 26673 |
9.68 |