メタデータ
| 項目 |
値 |
| Designation |
130P/McNaught-Hughes |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-01-21T18:21:27.048960Z |
| Orbit solution date (soln_date, UTC) |
2025-12-29T09:23:47Z |
| Obs used |
2366 |
| NEO |
- |
| M1 |
10.500 |
| K1 |
14.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-03-01.0000000 |
| e |
0.46080056 |
| q (au) |
1.823638 |
| a (au) |
3.382121 |
| i (deg) |
6.065359 |
| Ω (om, deg) |
70.255716 |
| ω (w, deg) |
245.911679 |
| M (ma, deg) |
6.058743 |
等級
散乱 + 全体線形
$$
M_a = (10.080 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.080 |
| n |
6.000 |
| gf |
0.880 |
| gb |
-0.718 |
| k |
0.973 |
| δ90 |
1.000 |
| 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 |
| 2022-03-07 |
2024-10-22 |
+6.2419 |
-2.381 |
| 2024-10-22 |
2025-12-21 |
+6.4393 |
-2.799 |
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) |
| 2026-06-01 00:00 |
07:03:17.49 |
+26:02:44.6 |
HIP 33831 |
29.54 |
| 2026-06-01 12:00 |
07:03:46.17 |
+26:02:01.8 |
HIP 33831 |
35.55 |
| 2026-06-02 00:00 |
07:04:14.90 |
+26:01:18.7 |
HIP 34061 |
36.42 |
| 2026-06-02 12:00 |
07:04:43.68 |
+26:00:35.3 |
HIP 34061 |
37.09 |
| 2026-06-03 00:00 |
07:05:12.51 |
+25:59:51.6 |
HIP 34061 |
38.86 |
| 2026-06-03 12:00 |
07:05:41.38 |
+25:59:07.6 |
HIP 34061 |
41.60 |
| 2026-06-04 00:00 |
07:06:10.30 |
+25:58:23.3 |
HIP 34061 |
45.13 |
| 2026-06-04 12:00 |
07:06:39.26 |
+25:57:38.7 |
HIP 34567 |
42.01 |
| 2026-06-05 00:00 |
07:07:08.27 |
+25:56:53.8 |
HIP 34567 |
35.64 |
| 2026-06-05 12:00 |
07:07:37.32 |
+25:56:08.6 |
HIP 34567 |
29.34 |
| 2026-06-06 00:00 |
07:08:06.41 |
+25:55:23.1 |
HIP 34567 |
23.18 |
| 2026-06-06 12:00 |
07:08:35.54 |
+25:54:37.3 |
HIP 34567 |
17.33 |
| 2026-06-07 00:00 |
07:09:04.72 |
+25:53:51.2 |
HIP 34567 |
12.25 |
| 2026-06-07 12:00 |
07:09:33.94 |
+25:53:04.7 |
HIP 34582 |
9.28 |
| 2026-06-08 00:00 |
07:10:03.20 |
+25:52:18.0 |
HIP 34582 |
9.25 |
| 2026-06-08 12:00 |
07:10:32.49 |
+25:51:31.0 |
HIP 34582 |
13.16 |
| 2026-06-09 00:00 |
07:11:01.83 |
+25:50:43.6 |
HIP 34582 |
18.69 |
| 2026-06-09 12:00 |
07:11:31.20 |
+25:49:56.0 |
HIP 34861 |
18.30 |
| 2026-06-10 00:00 |
07:12:00.61 |
+25:49:08.0 |
HIP 34861 |
11.76 |
| 2026-06-10 12:00 |
07:12:30.06 |
+25:48:19.8 |
HIP 34861 |
5.53 |
| 2026-06-11 00:00 |
07:12:59.54 |
+25:47:31.2 |
HIP 34861 |
3.46 |
| 2026-06-11 12:00 |
07:13:29.05 |
+25:46:42.4 |
HIP 34861 |
9.11 |
| 2026-06-12 00:00 |
07:13:58.60 |
+25:45:53.2 |
HIP 34861 |
15.62 |
| 2026-06-12 12:00 |
07:14:28.19 |
+25:45:03.8 |
HIP 35070 |
11.85 |
| 2026-06-13 00:00 |
07:14:57.81 |
+25:44:14.0 |
HIP 35070 |
8.89 |
| 2026-06-13 12:00 |
07:15:27.45 |
+25:43:23.9 |
HIP 35070 |
10.39 |
| 2026-06-14 00:00 |
07:15:57.13 |
+25:42:33.5 |
HIP 35070 |
15.09 |
| 2026-06-14 12:00 |
07:16:26.84 |
+25:41:42.9 |
HIP 35070 |
20.94 |
| 2026-06-15 00:00 |
07:16:56.58 |
+25:40:51.9 |
HIP 35070 |
27.22 |
| 2026-06-15 12:00 |
07:17:26.34 |
+25:40:00.6 |
HIP 35435 |
25.86 |
| 2026-06-16 00:00 |
07:17:56.14 |
+25:39:09.0 |
HIP 35435 |
21.81 |
| 2026-06-16 12:00 |
07:18:25.96 |
+25:38:17.2 |
HIP 35435 |
19.33 |
| 2026-06-17 00:00 |
07:18:55.80 |
+25:37:25.0 |
HIP 35435 |
19.07 |
| 2026-06-17 12:00 |
07:19:25.67 |
+25:36:32.5 |
HIP 35435 |
21.11 |
| 2026-06-18 00:00 |
07:19:55.56 |
+25:35:39.8 |
HIP 35624 |
15.91 |
| 2026-06-18 12:00 |
07:20:25.48 |
+25:34:46.7 |
HIP 35624 |
10.07 |
| 2026-06-19 00:00 |
07:20:55.42 |
+25:33:53.4 |
HIP 35624 |
6.49 |
| 2026-06-19 12:00 |
07:21:25.38 |
+25:32:59.7 |
HIP 35624 |
8.70 |
| 2026-06-20 00:00 |
07:21:55.35 |
+25:32:05.8 |
HIP 35624 |
14.22 |
| 2026-06-20 12:00 |
07:22:25.35 |
+25:31:11.6 |
HIP 35624 |
20.54 |
| 2026-06-21 00:00 |
07:22:55.37 |
+25:30:17.1 |
HIP 35666 |
24.81 |
| 2026-06-21 12:00 |
07:23:25.41 |
+25:29:22.3 |
HIP 35846 |
26.34 |
| 2026-06-22 00:00 |
07:23:55.46 |
+25:28:27.2 |
HIP 35846 |
26.13 |