メタデータ
| 項目 |
値 |
| Designation |
54P/de Vico-Swift-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-09-03T15:26:15.469440Z |
| Orbit solution date (soln_date, UTC) |
2024-12-30T09:36:39Z |
| Obs used |
275 |
| NEO |
- |
| M1 |
14.200 |
| K1 |
12.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2021-09-04.0000000 |
| e |
0.42608476 |
| q (au) |
2.175873 |
| a (au) |
3.791280 |
| i (deg) |
6.064463 |
| Ω (om, deg) |
358.816365 |
| ω (w, deg) |
1.789059 |
| M (ma, deg) |
213.716794 |
等級
散乱 + 全体線形
$$
M_a = (12.781 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.781 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.709 |
| k |
0.993 |
| 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) |
| 2026-09-20 00:00 |
10:02:30.48 |
+15:18:32.1 |
HIP 49168 |
7.30 |
| 2026-09-20 12:00 |
10:02:56.01 |
+15:16:13.3 |
HIP 49168 |
13.86 |
| 2026-09-21 00:00 |
10:03:21.47 |
+15:13:54.8 |
HIP 49168 |
20.42 |
| 2026-09-21 12:00 |
10:03:46.86 |
+15:11:36.5 |
HIP 49395 |
18.82 |
| 2026-09-22 00:00 |
10:04:12.18 |
+15:09:18.6 |
HIP 49395 |
12.44 |
| 2026-09-22 12:00 |
10:04:37.42 |
+15:07:00.9 |
HIP 49395 |
6.37 |
| 2026-09-23 00:00 |
10:05:02.60 |
+15:04:43.5 |
HIP 49395 |
3.35 |
| 2026-09-23 12:00 |
10:05:27.70 |
+15:02:26.5 |
HIP 49395 |
8.12 |
| 2026-09-24 00:00 |
10:05:52.73 |
+15:00:09.7 |
HIP 49395 |
14.28 |
| 2026-09-24 12:00 |
10:06:17.68 |
+14:57:53.3 |
HIP 49395 |
20.61 |
| 2026-09-25 00:00 |
10:06:42.56 |
+14:55:37.2 |
HIP 49623 |
19.49 |
| 2026-09-25 12:00 |
10:07:07.36 |
+14:53:21.4 |
HIP 49623 |
17.87 |
| 2026-09-26 00:00 |
10:07:32.09 |
+14:51:05.9 |
HIP 49623 |
18.45 |
| 2026-09-26 12:00 |
10:07:56.74 |
+14:48:50.7 |
HIP 49623 |
21.04 |
| 2026-09-27 00:00 |
10:08:21.32 |
+14:46:35.9 |
HIP 49623 |
25.01 |
| 2026-09-27 12:00 |
10:08:45.82 |
+14:44:21.5 |
HIP 49623 |
29.80 |
| 2026-09-28 00:00 |
10:09:10.24 |
+14:42:07.3 |
HIP 49866 |
28.87 |
| 2026-09-28 12:00 |
10:09:34.58 |
+14:39:53.6 |
HIP 49866 |
22.63 |
| 2026-09-29 00:00 |
10:09:58.85 |
+14:37:40.2 |
HIP 49866 |
16.44 |
| 2026-09-29 12:00 |
10:10:23.03 |
+14:35:27.1 |
HIP 49866 |
10.37 |
| 2026-09-30 00:00 |
10:10:47.14 |
+14:33:14.4 |
HIP 49866 |
4.83 |
| 2026-09-30 12:00 |
10:11:11.16 |
+14:31:02.1 |
HIP 49866 |
4.10 |
| 2026-10-01 00:00 |
10:11:35.10 |
+14:28:50.2 |
HIP 49866 |
9.34 |
| 2026-10-01 12:00 |
10:11:58.96 |
+14:26:38.6 |
HIP 49866 |
15.30 |
| 2026-10-02 00:00 |
10:12:22.74 |
+14:24:27.4 |
HIP 49866 |
21.36 |
| 2026-10-02 12:00 |
10:12:46.44 |
+14:22:16.7 |
HIP 49866 |
27.45 |
| 2026-10-03 00:00 |
10:13:10.05 |
+14:20:06.3 |
HIP 50124 |
30.00 |
| 2026-10-03 12:00 |
10:13:33.57 |
+14:17:56.3 |
HIP 50124 |
26.22 |
| 2026-10-04 00:00 |
10:13:57.01 |
+14:15:46.8 |
HIP 50124 |
23.44 |
| 2026-10-04 12:00 |
10:14:20.36 |
+14:13:37.6 |
HIP 50124 |
22.04 |
| 2026-10-05 00:00 |
10:14:43.63 |
+14:11:28.9 |
HIP 50124 |
22.26 |
| 2026-10-05 12:00 |
10:15:06.81 |
+14:09:20.6 |
HIP 50124 |
24.03 |
| 2026-10-06 00:00 |
10:15:29.90 |
+14:07:12.8 |
HIP 50124 |
27.04 |
| 2026-10-06 12:00 |
10:15:52.90 |
+14:05:05.4 |
HIP 50333 |
24.34 |
| 2026-10-07 00:00 |
10:16:15.81 |
+14:02:58.4 |
HIP 50333 |
20.20 |
| 2026-10-07 12:00 |
10:16:38.62 |
+14:00:52.0 |
HIP 50333 |
17.17 |
| 2026-10-08 00:00 |
10:17:01.35 |
+13:58:45.9 |
HIP 50333 |
15.87 |
| 2026-10-08 12:00 |
10:17:23.98 |
+13:56:40.4 |
HIP 50479 |
15.08 |
| 2026-10-09 00:00 |
10:17:46.52 |
+13:54:35.3 |
HIP 50479 |
9.70 |
| 2026-10-09 12:00 |
10:18:08.97 |
+13:52:30.7 |
HIP 50479 |
5.44 |
| 2026-10-10 00:00 |
10:18:31.32 |
+13:50:26.6 |
HIP 50479 |
5.72 |
| 2026-10-10 12:00 |
10:18:53.57 |
+13:48:23.0 |
HIP 50479 |
10.15 |
| 2026-10-11 00:00 |
10:19:15.72 |
+13:46:19.9 |
HIP 50479 |
15.47 |