メタデータ
| 項目 |
値 |
| Designation |
328P/LONEOS-Tucker |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2015-12-24T03:13:36.635520Z |
| Orbit solution date (soln_date, UTC) |
2024-12-26T20:12:47Z |
| Obs used |
609 |
| NEO |
- |
| M1 |
4.400 |
| K1 |
44.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-04-12.0000000 |
| e |
0.55125219 |
| q (au) |
1.886391 |
| a (au) |
4.203678 |
| i (deg) |
17.649254 |
| Ω (om, deg) |
341.601225 |
| ω (w, deg) |
30.622809 |
| M (ma, deg) |
330.709424 |
等級
散乱 + 全体線形
$$
M_a = (12.057 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.057 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2024-06-08 |
2024-12-02 |
+18.1269 |
-5.074 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
10:47:40.42 |
+09:02:48.7 |
HIP 52838 |
15.19 |
| 2026-09-20 12:00 |
10:48:01.87 |
+09:00:10.9 |
HIP 52838 |
10.61 |
| 2026-09-21 00:00 |
10:48:23.29 |
+08:57:33.4 |
HIP 52838 |
8.02 |
| 2026-09-21 12:00 |
10:48:44.65 |
+08:54:56.0 |
HIP 52838 |
9.26 |
| 2026-09-22 00:00 |
10:49:05.98 |
+08:52:18.9 |
HIP 52838 |
13.28 |
| 2026-09-22 12:00 |
10:49:27.25 |
+08:49:42.0 |
HIP 52838 |
18.32 |
| 2026-09-23 00:00 |
10:49:48.49 |
+08:47:05.3 |
HIP 52838 |
23.74 |
| 2026-09-23 12:00 |
10:50:09.68 |
+08:44:28.8 |
HIP 53126 |
29.09 |
| 2026-09-24 00:00 |
10:50:30.82 |
+08:41:52.5 |
HIP 53126 |
24.89 |
| 2026-09-24 12:00 |
10:50:51.91 |
+08:39:16.4 |
HIP 53126 |
21.48 |
| 2026-09-25 00:00 |
10:51:12.96 |
+08:36:40.6 |
HIP 53126 |
19.26 |
| 2026-09-25 12:00 |
10:51:33.96 |
+08:34:05.0 |
HIP 53126 |
18.66 |
| 2026-09-26 00:00 |
10:51:54.91 |
+08:31:29.7 |
HIP 53126 |
19.81 |
| 2026-09-26 12:00 |
10:52:15.82 |
+08:28:54.5 |
HIP 53148 |
16.26 |
| 2026-09-27 00:00 |
10:52:36.67 |
+08:26:19.6 |
HIP 53148 |
13.78 |
| 2026-09-27 12:00 |
10:52:57.47 |
+08:23:45.0 |
HIP 53148 |
13.49 |
| 2026-09-28 00:00 |
10:53:18.23 |
+08:21:10.6 |
HIP 53148 |
15.49 |
| 2026-09-28 12:00 |
10:53:38.93 |
+08:18:36.4 |
HIP 53148 |
19.07 |
| 2026-09-29 00:00 |
10:53:59.58 |
+08:16:02.5 |
HIP 53148 |
23.51 |
| 2026-09-29 12:00 |
10:54:20.18 |
+08:13:28.9 |
HIP 53148 |
28.39 |
| 2026-09-30 00:00 |
10:54:40.73 |
+08:10:55.5 |
HIP 53430 |
28.66 |
| 2026-09-30 12:00 |
10:55:01.22 |
+08:08:22.4 |
HIP 53430 |
28.33 |
| 2026-10-01 00:00 |
10:55:21.66 |
+08:05:49.5 |
HIP 53440 |
26.51 |
| 2026-10-01 12:00 |
10:55:42.05 |
+08:03:16.9 |
HIP 53440 |
22.79 |
| 2026-10-02 00:00 |
10:56:02.38 |
+08:00:44.6 |
HIP 53440 |
20.00 |
| 2026-10-02 12:00 |
10:56:22.65 |
+07:58:12.6 |
HIP 53440 |
18.56 |
| 2026-10-03 00:00 |
10:56:42.87 |
+07:55:40.8 |
HIP 53440 |
18.75 |
| 2026-10-03 12:00 |
10:57:03.03 |
+07:53:09.4 |
HIP 53440 |
20.53 |
| 2026-10-04 00:00 |
10:57:23.14 |
+07:50:38.2 |
HIP 53597 |
20.57 |
| 2026-10-04 12:00 |
10:57:43.18 |
+07:48:07.3 |
HIP 53597 |
21.65 |
| 2026-10-05 00:00 |
10:58:03.17 |
+07:45:36.8 |
HIP 53597 |
23.99 |
| 2026-10-05 12:00 |
10:58:23.10 |
+07:43:06.5 |
HIP 53597 |
27.27 |
| 2026-10-06 00:00 |
10:58:42.97 |
+07:40:36.6 |
HIP 53725 |
29.92 |
| 2026-10-06 12:00 |
10:59:02.77 |
+07:38:06.9 |
HIP 53725 |
25.89 |
| 2026-10-07 00:00 |
10:59:22.52 |
+07:35:37.6 |
HIP 53725 |
22.51 |
| 2026-10-07 12:00 |
10:59:42.20 |
+07:33:08.7 |
HIP 53848 |
18.82 |
| 2026-10-08 00:00 |
11:00:01.82 |
+07:30:40.0 |
HIP 53848 |
14.99 |
| 2026-10-08 12:00 |
11:00:21.37 |
+07:28:11.7 |
HIP 53848 |
12.43 |
| 2026-10-09 00:00 |
11:00:40.86 |
+07:25:43.7 |
HIP 53848 |
11.98 |
| 2026-10-09 12:00 |
11:01:00.28 |
+07:23:16.1 |
HIP 53848 |
13.83 |
| 2026-10-10 00:00 |
11:01:19.64 |
+07:20:48.8 |
HIP 53848 |
17.23 |
| 2026-10-10 12:00 |
11:01:38.93 |
+07:18:21.9 |
HIP 53848 |
21.45 |
| 2026-10-11 00:00 |
11:01:58.15 |
+07:15:55.4 |
HIP 53904 |
24.04 |