メタデータ
| 項目 |
値 |
| Designation |
147P/Kushida-Muramatsu |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-09-23T19:01:26.480640Z |
| Orbit solution date (soln_date, UTC) |
2024-11-06T10:50:35Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
11.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-10-30.0000000 |
| e |
0.27555443 |
| q (au) |
2.754546 |
| a (au) |
3.802282 |
| i (deg) |
2.368741 |
| Ω (om, deg) |
93.773792 |
| ω (w, deg) |
347.033193 |
| M (ma, deg) |
219.117040 |
等級
散乱 + 全体線形
$$
M_a = (13.842 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.842 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| δ90 |
10.000 |
| 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) |
| 2026-09-25 00:00 |
14:15:35.65 |
-12:01:03.5 |
HIP 69657 |
13.84 |
| 2026-09-25 12:00 |
14:16:02.24 |
-12:03:28.1 |
HIP 69657 |
14.65 |
| 2026-09-26 00:00 |
14:16:28.89 |
-12:05:52.7 |
HIP 69657 |
18.28 |
| 2026-09-26 12:00 |
14:16:55.60 |
-12:08:17.4 |
HIP 69800 |
19.80 |
| 2026-09-27 00:00 |
14:17:22.37 |
-12:10:42.1 |
HIP 69945 |
22.31 |
| 2026-09-27 12:00 |
14:17:49.20 |
-12:13:06.8 |
HIP 69945 |
17.37 |
| 2026-09-28 00:00 |
14:18:16.09 |
-12:15:31.5 |
HIP 69945 |
14.25 |
| 2026-09-28 12:00 |
14:18:43.03 |
-12:17:56.3 |
HIP 69945 |
14.23 |
| 2026-09-29 00:00 |
14:19:10.04 |
-12:20:21.1 |
HIP 69945 |
17.33 |
| 2026-09-29 12:00 |
14:19:37.10 |
-12:22:45.8 |
HIP 69945 |
22.29 |
| 2026-09-30 00:00 |
14:20:04.22 |
-12:25:10.6 |
HIP 69945 |
28.17 |
| 2026-09-30 12:00 |
14:20:31.40 |
-12:27:35.4 |
HIP 69945 |
34.49 |
| 2026-10-01 00:00 |
14:20:58.63 |
-12:30:00.2 |
HIP 70281 |
37.34 |
| 2026-10-01 12:00 |
14:21:25.91 |
-12:32:24.9 |
HIP 70281 |
34.99 |
| 2026-10-02 00:00 |
14:21:53.26 |
-12:34:49.7 |
HIP 70281 |
33.98 |
| 2026-10-02 12:00 |
14:22:20.65 |
-12:37:14.4 |
HIP 70365 |
28.93 |
| 2026-10-03 00:00 |
14:22:48.11 |
-12:39:39.1 |
HIP 70365 |
22.49 |
| 2026-10-03 12:00 |
14:23:15.61 |
-12:42:03.8 |
HIP 70365 |
16.61 |
| 2026-10-04 00:00 |
14:23:43.17 |
-12:44:28.5 |
HIP 70365 |
12.16 |
| 2026-10-04 12:00 |
14:24:10.78 |
-12:46:53.1 |
HIP 70365 |
11.02 |
| 2026-10-05 00:00 |
14:24:38.44 |
-12:49:17.7 |
HIP 70365 |
14.06 |
| 2026-10-05 12:00 |
14:25:06.16 |
-12:51:42.2 |
HIP 70365 |
19.42 |
| 2026-10-06 00:00 |
14:25:33.92 |
-12:54:06.7 |
HIP 70634 |
19.52 |
| 2026-10-06 12:00 |
14:26:01.74 |
-12:56:31.1 |
HIP 70634 |
12.98 |
| 2026-10-07 00:00 |
14:26:29.60 |
-12:58:55.5 |
HIP 70634 |
7.69 |
| 2026-10-07 12:00 |
14:26:57.52 |
-13:01:19.8 |
HIP 70634 |
7.32 |
| 2026-10-08 00:00 |
14:27:25.48 |
-13:03:44.1 |
HIP 70634 |
12.34 |
| 2026-10-08 12:00 |
14:27:53.49 |
-13:06:08.2 |
HIP 70714 |
15.55 |
| 2026-10-09 00:00 |
14:28:21.55 |
-13:08:32.3 |
HIP 70714 |
15.72 |
| 2026-10-09 12:00 |
14:28:49.65 |
-13:10:56.3 |
HIP 70714 |
18.92 |
| 2026-10-10 00:00 |
14:29:17.80 |
-13:13:20.3 |
HIP 70714 |
23.96 |
| 2026-10-10 12:00 |
14:29:46.00 |
-13:15:44.1 |
HIP 71044 |
29.74 |
| 2026-10-11 00:00 |
14:30:14.24 |
-13:18:07.8 |
HIP 71044 |
23.52 |
| 2026-10-11 12:00 |
14:30:42.52 |
-13:20:31.4 |
HIP 71044 |
18.09 |
| 2026-10-12 00:00 |
14:31:10.85 |
-13:22:54.9 |
HIP 71044 |
14.40 |
| 2026-10-12 12:00 |
14:31:39.22 |
-13:25:18.3 |
HIP 71017 |
12.06 |
| 2026-10-13 00:00 |
14:32:07.63 |
-13:27:41.6 |
HIP 71017 |
13.50 |
| 2026-10-13 12:00 |
14:32:36.08 |
-13:30:04.8 |
HIP 71017 |
18.06 |
| 2026-10-14 00:00 |
14:33:04.57 |
-13:32:27.8 |
HIP 71240 |
15.95 |
| 2026-10-14 12:00 |
14:33:33.10 |
-13:34:50.7 |
HIP 71240 |
10.53 |
| 2026-10-15 00:00 |
14:34:01.67 |
-13:37:13.5 |
HIP 71240 |
8.65 |
| 2026-10-15 12:00 |
14:34:30.28 |
-13:39:36.1 |
HIP 71240 |
12.11 |
| 2026-10-16 00:00 |
14:34:58.93 |
-13:41:58.6 |
HIP 71240 |
18.07 |