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) |
| 2026-07-29 00:00 |
09:12:44.44 |
+19:34:34.2 |
HIP 45137 |
13.24 |
| 2026-07-29 12:00 |
09:13:14.20 |
+19:32:10.8 |
HIP 45137 |
20.34 |
| 2026-07-30 00:00 |
09:13:43.94 |
+19:29:47.2 |
HIP 45137 |
27.60 |
| 2026-07-30 12:00 |
09:14:13.67 |
+19:27:23.4 |
HIP 45137 |
34.93 |
| 2026-07-31 00:00 |
09:14:43.39 |
+19:24:59.5 |
HIP 45456 |
40.58 |
| 2026-07-31 12:00 |
09:15:13.10 |
+19:22:35.5 |
HIP 45456 |
36.04 |
| 2026-08-01 00:00 |
09:15:42.79 |
+19:20:11.4 |
HIP 45456 |
32.58 |
| 2026-08-01 12:00 |
09:16:12.46 |
+19:17:47.1 |
HIP 45510 |
29.37 |
| 2026-08-02 00:00 |
09:16:42.13 |
+19:15:22.6 |
HIP 45510 |
26.99 |
| 2026-08-02 12:00 |
09:17:11.77 |
+19:12:58.1 |
HIP 45678 |
24.86 |
| 2026-08-03 00:00 |
09:17:41.40 |
+19:10:33.4 |
HIP 45678 |
20.75 |
| 2026-08-03 12:00 |
09:18:11.01 |
+19:08:08.6 |
HIP 45678 |
18.78 |
| 2026-08-04 00:00 |
09:18:40.61 |
+19:05:43.7 |
HIP 45678 |
19.60 |
| 2026-08-04 12:00 |
09:19:10.19 |
+19:03:18.7 |
HIP 45648 |
20.72 |
| 2026-08-05 00:00 |
09:19:39.75 |
+19:00:53.5 |
HIP 45826 |
14.48 |
| 2026-08-05 12:00 |
09:20:09.30 |
+18:58:28.2 |
HIP 45826 |
9.71 |
| 2026-08-06 00:00 |
09:20:38.82 |
+18:56:02.9 |
HIP 45826 |
9.39 |
| 2026-08-06 12:00 |
09:21:08.33 |
+18:53:37.4 |
HIP 45917 |
12.74 |
| 2026-08-07 00:00 |
09:21:37.82 |
+18:51:11.8 |
HIP 45917 |
6.77 |
| 2026-08-07 12:00 |
09:22:07.28 |
+18:48:46.1 |
HIP 45917 |
6.20 |
| 2026-08-08 00:00 |
09:22:36.73 |
+18:46:20.3 |
HIP 45917 |
11.84 |
| 2026-08-08 12:00 |
09:23:06.15 |
+18:43:54.5 |
HIP 45917 |
18.72 |
| 2026-08-09 00:00 |
09:23:35.56 |
+18:41:28.5 |
HIP 45917 |
25.88 |
| 2026-08-09 12:00 |
09:24:04.94 |
+18:39:02.5 |
HIP 46100 |
27.93 |
| 2026-08-10 00:00 |
09:24:34.29 |
+18:36:36.3 |
HIP 46100 |
26.40 |
| 2026-08-10 12:00 |
09:25:03.63 |
+18:34:10.1 |
HIP 46272 |
24.30 |
| 2026-08-11 00:00 |
09:25:32.94 |
+18:31:43.9 |
HIP 46272 |
23.39 |
| 2026-08-11 12:00 |
09:26:02.22 |
+18:29:17.5 |
HIP 46357 |
21.59 |
| 2026-08-12 00:00 |
09:26:31.48 |
+18:26:51.1 |
HIP 46357 |
15.33 |
| 2026-08-12 12:00 |
09:27:00.72 |
+18:24:24.6 |
HIP 46357 |
10.58 |
| 2026-08-13 00:00 |
09:27:29.92 |
+18:21:58.1 |
HIP 46357 |
9.86 |
| 2026-08-13 12:00 |
09:27:59.10 |
+18:19:31.5 |
HIP 46357 |
13.79 |
| 2026-08-14 00:00 |
09:28:28.25 |
+18:17:04.9 |
HIP 46357 |
19.77 |
| 2026-08-14 12:00 |
09:28:57.37 |
+18:14:38.2 |
HIP 46357 |
26.44 |
| 2026-08-15 00:00 |
09:29:26.47 |
+18:12:11.5 |
HIP 46662 |
20.06 |
| 2026-08-15 12:00 |
09:29:55.53 |
+18:09:44.7 |
HIP 46662 |
14.03 |
| 2026-08-16 00:00 |
09:30:24.56 |
+18:07:17.9 |
HIP 46662 |
9.93 |
| 2026-08-16 12:00 |
09:30:53.56 |
+18:04:51.1 |
HIP 46662 |
10.37 |
| 2026-08-17 00:00 |
09:31:22.53 |
+18:02:24.3 |
HIP 46662 |
14.93 |
| 2026-08-17 12:00 |
09:31:51.47 |
+17:59:57.4 |
HIP 46662 |
21.10 |
| 2026-08-18 00:00 |
09:32:20.37 |
+17:57:30.6 |
HIP 46900 |
25.21 |
| 2026-08-18 12:00 |
09:32:49.24 |
+17:55:03.7 |
HIP 46900 |
23.83 |
| 2026-08-19 00:00 |
09:33:18.08 |
+17:52:36.8 |
HIP 46986 |
19.21 |