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) |
| 2026-03-26 00:00 |
08:34:46.60 |
+19:24:01.5 |
HIP 42133 |
13.77 |
| 2026-03-26 12:00 |
08:34:44.51 |
+19:24:04.9 |
HIP 42133 |
14.00 |
| 2026-03-27 00:00 |
08:34:42.45 |
+19:24:08.1 |
HIP 42133 |
14.25 |
| 2026-03-27 12:00 |
08:34:40.42 |
+19:24:11.3 |
HIP 42133 |
14.51 |
| 2026-03-28 00:00 |
08:34:38.42 |
+19:24:14.3 |
HIP 42133 |
14.78 |
| 2026-03-28 12:00 |
08:34:36.45 |
+19:24:17.2 |
HIP 42133 |
15.05 |
| 2026-03-29 00:00 |
08:34:34.51 |
+19:24:20.0 |
HIP 42133 |
15.33 |
| 2026-03-29 12:00 |
08:34:32.60 |
+19:24:22.7 |
HIP 42133 |
15.61 |
| 2026-03-30 00:00 |
08:34:30.72 |
+19:24:25.3 |
HIP 42133 |
15.89 |
| 2026-03-30 12:00 |
08:34:28.87 |
+19:24:27.7 |
HIP 42133 |
16.18 |
| 2026-03-31 00:00 |
08:34:27.06 |
+19:24:30.1 |
HIP 42133 |
16.48 |
| 2026-03-31 12:00 |
08:34:25.27 |
+19:24:32.3 |
HIP 42133 |
16.77 |
| 2026-04-01 00:00 |
08:34:23.52 |
+19:24:34.5 |
HIP 42133 |
17.06 |
| 2026-04-01 12:00 |
08:34:21.79 |
+19:24:36.5 |
HIP 42133 |
17.36 |
| 2026-04-02 00:00 |
08:34:20.10 |
+19:24:38.4 |
HIP 42133 |
17.65 |
| 2026-04-02 12:00 |
08:34:18.44 |
+19:24:40.2 |
HIP 42133 |
17.95 |
| 2026-04-03 00:00 |
08:34:16.81 |
+19:24:41.8 |
HIP 42133 |
18.24 |
| 2026-04-03 12:00 |
08:34:15.22 |
+19:24:43.4 |
HIP 42133 |
18.53 |
| 2026-04-04 00:00 |
08:34:13.65 |
+19:24:44.8 |
HIP 42133 |
18.82 |
| 2026-04-04 12:00 |
08:34:12.12 |
+19:24:46.1 |
HIP 42133 |
19.11 |
| 2026-04-05 00:00 |
08:34:10.61 |
+19:24:47.4 |
HIP 42133 |
19.39 |
| 2026-04-05 12:00 |
08:34:09.14 |
+19:24:48.5 |
HIP 42133 |
19.67 |
| 2026-04-06 00:00 |
08:34:07.70 |
+19:24:49.4 |
HIP 42133 |
19.95 |
| 2026-04-06 12:00 |
08:34:06.30 |
+19:24:50.3 |
HIP 42133 |
20.22 |
| 2026-04-07 00:00 |
08:34:04.92 |
+19:24:51.1 |
HIP 42133 |
20.49 |
| 2026-04-07 12:00 |
08:34:03.58 |
+19:24:51.7 |
HIP 42133 |
20.76 |
| 2026-04-08 00:00 |
08:34:02.27 |
+19:24:52.2 |
HIP 42133 |
21.02 |
| 2026-04-08 12:00 |
08:34:00.99 |
+19:24:52.6 |
HIP 42133 |
21.28 |
| 2026-04-09 00:00 |
08:33:59.74 |
+19:24:52.9 |
HIP 42133 |
21.53 |
| 2026-04-09 12:00 |
08:33:58.53 |
+19:24:53.1 |
HIP 42133 |
21.78 |
| 2026-04-10 00:00 |
08:33:57.35 |
+19:24:53.1 |
HIP 42133 |
22.03 |
| 2026-04-10 12:00 |
08:33:56.20 |
+19:24:53.1 |
HIP 42133 |
22.27 |
| 2026-04-11 00:00 |
08:33:55.08 |
+19:24:52.9 |
HIP 42133 |
22.50 |
| 2026-04-11 12:00 |
08:33:54.00 |
+19:24:52.6 |
HIP 42133 |
22.73 |
| 2026-04-12 00:00 |
08:33:52.95 |
+19:24:52.2 |
HIP 42133 |
22.95 |
| 2026-04-12 12:00 |
08:33:51.93 |
+19:24:51.7 |
HIP 42133 |
23.17 |
| 2026-04-13 00:00 |
08:33:50.94 |
+19:24:51.0 |
HIP 42133 |
23.38 |
| 2026-04-13 12:00 |
08:33:49.99 |
+19:24:50.2 |
HIP 42133 |
23.59 |
| 2026-04-14 00:00 |
08:33:49.07 |
+19:24:49.4 |
HIP 42133 |
23.79 |
| 2026-04-14 12:00 |
08:33:48.18 |
+19:24:48.4 |
HIP 42133 |
23.98 |
| 2026-04-15 00:00 |
08:33:47.32 |
+19:24:47.3 |
HIP 42133 |
24.17 |
| 2026-04-15 12:00 |
08:33:46.50 |
+19:24:46.0 |
HIP 42133 |
24.35 |
| 2026-04-16 00:00 |
08:33:45.71 |
+19:24:44.7 |
HIP 42133 |
24.53 |