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) |
| 2026-05-12 00:00 |
13:32:20.76 |
-06:52:52.5 |
HIP 66100 |
21.19 |
| 2026-05-12 12:00 |
13:32:06.59 |
-06:51:44.1 |
HIP 66100 |
23.97 |
| 2026-05-13 00:00 |
13:31:52.57 |
-06:50:36.6 |
HIP 66100 |
26.93 |
| 2026-05-13 12:00 |
13:31:38.70 |
-06:49:30.2 |
HIP 65892 |
27.96 |
| 2026-05-14 00:00 |
13:31:24.99 |
-06:48:24.8 |
HIP 65892 |
24.99 |
| 2026-05-14 12:00 |
13:31:11.44 |
-06:47:20.5 |
HIP 65892 |
22.24 |
| 2026-05-15 00:00 |
13:30:58.04 |
-06:46:17.2 |
HIP 65892 |
19.77 |
| 2026-05-15 12:00 |
13:30:44.81 |
-06:45:14.9 |
HIP 65892 |
17.68 |
| 2026-05-16 00:00 |
13:30:31.75 |
-06:44:13.7 |
HIP 65892 |
16.08 |
| 2026-05-16 12:00 |
13:30:18.85 |
-06:43:13.7 |
HIP 65892 |
15.11 |
| 2026-05-17 00:00 |
13:30:06.12 |
-06:42:14.7 |
HIP 65892 |
14.85 |
| 2026-05-17 12:00 |
13:29:53.56 |
-06:41:16.8 |
HIP 65892 |
15.31 |
| 2026-05-18 00:00 |
13:29:41.17 |
-06:40:20.1 |
HIP 65892 |
16.40 |
| 2026-05-18 12:00 |
13:29:28.96 |
-06:39:24.4 |
HIP 65892 |
17.99 |
| 2026-05-19 00:00 |
13:29:16.92 |
-06:38:29.9 |
HIP 65892 |
19.94 |
| 2026-05-19 12:00 |
13:29:05.06 |
-06:37:36.6 |
HIP 65892 |
22.12 |
| 2026-05-20 00:00 |
13:28:53.38 |
-06:36:44.4 |
HIP 65656 |
21.66 |
| 2026-05-20 12:00 |
13:28:41.88 |
-06:35:53.4 |
HIP 65656 |
19.92 |
| 2026-05-21 00:00 |
13:28:30.57 |
-06:35:03.5 |
HIP 65656 |
18.51 |
| 2026-05-21 12:00 |
13:28:19.43 |
-06:34:14.8 |
HIP 65656 |
17.49 |
| 2026-05-22 00:00 |
13:28:08.49 |
-06:33:27.3 |
HIP 65656 |
16.90 |
| 2026-05-22 12:00 |
13:27:57.73 |
-06:32:41.0 |
HIP 65656 |
16.77 |
| 2026-05-23 00:00 |
13:27:47.16 |
-06:31:55.8 |
HIP 65656 |
17.08 |
| 2026-05-23 12:00 |
13:27:36.77 |
-06:31:11.9 |
HIP 65656 |
17.79 |
| 2026-05-24 00:00 |
13:27:26.58 |
-06:30:29.2 |
HIP 65656 |
18.82 |
| 2026-05-24 12:00 |
13:27:16.58 |
-06:29:47.7 |
HIP 65656 |
20.12 |
| 2026-05-25 00:00 |
13:27:06.77 |
-06:29:07.4 |
HIP 65656 |
21.61 |
| 2026-05-25 12:00 |
13:26:57.16 |
-06:28:28.3 |
HIP 65656 |
23.23 |
| 2026-05-26 00:00 |
13:26:47.74 |
-06:27:50.4 |
HIP 65656 |
24.96 |
| 2026-05-26 12:00 |
13:26:38.51 |
-06:27:13.8 |
HIP 65656 |
26.74 |
| 2026-05-27 00:00 |
13:26:29.48 |
-06:26:38.3 |
HIP 65656 |
28.57 |
| 2026-05-27 12:00 |
13:26:20.65 |
-06:26:04.2 |
HIP 65656 |
30.41 |
| 2026-05-28 00:00 |
13:26:12.01 |
-06:25:31.2 |
HIP 65590 |
31.42 |
| 2026-05-28 12:00 |
13:26:03.57 |
-06:24:59.5 |
HIP 65447 |
31.57 |
| 2026-05-29 00:00 |
13:25:55.33 |
-06:24:29.0 |
HIP 65447 |
30.82 |
| 2026-05-29 12:00 |
13:25:47.30 |
-06:23:59.8 |
HIP 65447 |
30.22 |
| 2026-05-30 00:00 |
13:25:39.46 |
-06:23:31.8 |
HIP 65447 |
29.74 |
| 2026-05-30 12:00 |
13:25:31.82 |
-06:23:05.1 |
HIP 65447 |
29.40 |
| 2026-05-31 00:00 |
13:25:24.38 |
-06:22:39.6 |
HIP 65447 |
29.17 |
| 2026-05-31 12:00 |
13:25:17.15 |
-06:22:15.3 |
HIP 65447 |
29.06 |
| 2026-06-01 00:00 |
13:25:10.12 |
-06:21:52.4 |
HIP 65447 |
29.06 |
| 2026-06-01 12:00 |
13:25:03.29 |
-06:21:30.6 |
HIP 65447 |
29.15 |
| 2026-06-02 00:00 |
13:24:56.66 |
-06:21:10.1 |
HIP 65447 |
29.33 |