メタデータ
| 項目 |
値 |
| Designation |
C/2011 L3 (McNaught) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-08-10T12:00:37.532160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:51Z |
| Obs used |
798 |
| NEO |
- |
| M1 |
14.700 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-08-05.0000000 |
| e |
1.00010168 |
| q (au) |
1.923846 |
| a (au) |
-18921.284723 |
| i (deg) |
87.114423 |
| Ω (om, deg) |
307.755201 |
| ω (w, deg) |
27.727029 |
| M (ma, deg) |
-0.000002 |
等級
散乱 + 全体線形
$$
M_a = (15.294 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.294 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.528 |
| k |
0.800 |
| 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) |
| 2026-06-01 00:00 |
08:34:47.99 |
+19:14:45.5 |
HIP 42133 |
21.94 |
| 2026-06-01 12:00 |
08:34:50.00 |
+19:14:34.4 |
HIP 42133 |
21.96 |
| 2026-06-02 00:00 |
08:34:52.03 |
+19:14:23.1 |
HIP 42133 |
21.99 |
| 2026-06-02 12:00 |
08:34:54.09 |
+19:14:11.8 |
HIP 42133 |
22.04 |
| 2026-06-03 00:00 |
08:34:56.17 |
+19:14:00.3 |
HIP 42133 |
22.09 |
| 2026-06-03 12:00 |
08:34:58.27 |
+19:13:48.8 |
HIP 42133 |
22.16 |
| 2026-06-04 00:00 |
08:35:00.40 |
+19:13:37.2 |
HIP 42133 |
22.24 |
| 2026-06-04 12:00 |
08:35:02.56 |
+19:13:25.5 |
HIP 42133 |
22.34 |
| 2026-06-05 00:00 |
08:35:04.73 |
+19:13:13.7 |
HIP 42133 |
22.45 |
| 2026-06-05 12:00 |
08:35:06.93 |
+19:13:01.9 |
HIP 42133 |
22.57 |
| 2026-06-06 00:00 |
08:35:09.16 |
+19:12:50.0 |
HIP 42133 |
22.70 |
| 2026-06-06 12:00 |
08:35:11.40 |
+19:12:37.9 |
HIP 42133 |
22.85 |
| 2026-06-07 00:00 |
08:35:13.67 |
+19:12:25.9 |
HIP 42133 |
23.02 |
| 2026-06-07 12:00 |
08:35:15.96 |
+19:12:13.7 |
HIP 42133 |
23.19 |
| 2026-06-08 00:00 |
08:35:18.28 |
+19:12:01.4 |
HIP 42133 |
23.38 |
| 2026-06-08 12:00 |
08:35:20.61 |
+19:11:49.1 |
HIP 42133 |
23.59 |
| 2026-06-09 00:00 |
08:35:22.97 |
+19:11:36.7 |
HIP 42133 |
23.81 |
| 2026-06-09 12:00 |
08:35:25.35 |
+19:11:24.2 |
HIP 42133 |
24.04 |
| 2026-06-10 00:00 |
08:35:27.76 |
+19:11:11.6 |
HIP 42133 |
24.29 |
| 2026-06-10 12:00 |
08:35:30.18 |
+19:10:59.0 |
HIP 42133 |
24.55 |
| 2026-06-11 00:00 |
08:35:32.63 |
+19:10:46.3 |
HIP 42133 |
24.83 |
| 2026-06-11 12:00 |
08:35:35.09 |
+19:10:33.5 |
HIP 42247 |
24.63 |
| 2026-06-12 00:00 |
08:35:37.58 |
+19:10:20.6 |
HIP 42247 |
24.06 |
| 2026-06-12 12:00 |
08:35:40.09 |
+19:10:07.6 |
HIP 42247 |
23.50 |
| 2026-06-13 00:00 |
08:35:42.62 |
+19:09:54.6 |
HIP 42247 |
22.93 |
| 2026-06-13 12:00 |
08:35:45.17 |
+19:09:41.5 |
HIP 42247 |
22.37 |
| 2026-06-14 00:00 |
08:35:47.75 |
+19:09:28.4 |
HIP 42247 |
21.80 |
| 2026-06-14 12:00 |
08:35:50.34 |
+19:09:15.1 |
HIP 42247 |
21.24 |
| 2026-06-15 00:00 |
08:35:52.95 |
+19:09:01.8 |
HIP 42247 |
20.67 |
| 2026-06-15 12:00 |
08:35:55.58 |
+19:08:48.4 |
HIP 42247 |
20.11 |
| 2026-06-16 00:00 |
08:35:58.23 |
+19:08:35.0 |
HIP 42247 |
19.55 |
| 2026-06-16 12:00 |
08:36:00.90 |
+19:08:21.5 |
HIP 42247 |
19.00 |
| 2026-06-17 00:00 |
08:36:03.59 |
+19:08:07.9 |
HIP 42247 |
18.44 |
| 2026-06-17 12:00 |
08:36:06.30 |
+19:07:54.2 |
HIP 42247 |
17.90 |
| 2026-06-18 00:00 |
08:36:09.03 |
+19:07:40.5 |
HIP 42247 |
17.36 |
| 2026-06-18 12:00 |
08:36:11.77 |
+19:07:26.7 |
HIP 42247 |
16.82 |
| 2026-06-19 00:00 |
08:36:14.54 |
+19:07:12.9 |
HIP 42247 |
16.30 |
| 2026-06-19 12:00 |
08:36:17.32 |
+19:06:58.9 |
HIP 42247 |
15.78 |
| 2026-06-20 00:00 |
08:36:20.12 |
+19:06:45.0 |
HIP 42247 |
15.28 |
| 2026-06-20 12:00 |
08:36:22.93 |
+19:06:30.9 |
HIP 42247 |
14.79 |
| 2026-06-21 00:00 |
08:36:25.77 |
+19:06:16.8 |
HIP 42247 |
14.31 |
| 2026-06-21 12:00 |
08:36:28.62 |
+19:06:02.7 |
HIP 42247 |
13.86 |
| 2026-06-22 00:00 |
08:36:31.49 |
+19:05:48.4 |
HIP 42247 |
13.42 |