C/2011 L3 (McNaught)
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) |
| 2026-02-03 00:00 |
08:40:23.30 |
+19:10:14.3 |
HIP 42542 |
10.73 |
| 2026-02-03 12:00 |
08:40:19.25 |
+19:10:25.7 |
HIP 42542 |
10.52 |
| 2026-02-04 00:00 |
08:40:15.21 |
+19:10:37.0 |
HIP 42542 |
10.39 |
| 2026-02-04 12:00 |
08:40:11.17 |
+19:10:48.3 |
HIP 42542 |
10.36 |
| 2026-02-05 00:00 |
08:40:07.14 |
+19:10:59.6 |
HIP 42542 |
10.41 |
| 2026-02-05 12:00 |
08:40:03.11 |
+19:11:10.8 |
HIP 42542 |
10.56 |
| 2026-02-06 00:00 |
08:39:59.09 |
+19:11:22.0 |
HIP 42542 |
10.79 |
| 2026-02-06 12:00 |
08:39:55.07 |
+19:11:33.2 |
HIP 42542 |
11.10 |
| 2026-02-07 00:00 |
08:39:51.06 |
+19:11:44.3 |
HIP 42542 |
11.48 |
| 2026-02-07 12:00 |
08:39:47.06 |
+19:11:55.4 |
HIP 42542 |
11.93 |
| 2026-02-08 00:00 |
08:39:43.07 |
+19:12:06.4 |
HIP 42542 |
12.44 |
| 2026-02-08 12:00 |
08:39:39.08 |
+19:12:17.4 |
HIP 42542 |
12.99 |
| 2026-02-09 00:00 |
08:39:35.10 |
+19:12:28.4 |
HIP 42542 |
13.59 |
| 2026-02-09 12:00 |
08:39:31.13 |
+19:12:39.3 |
HIP 42542 |
14.23 |
| 2026-02-10 00:00 |
08:39:27.17 |
+19:12:50.2 |
HIP 42542 |
14.90 |
| 2026-02-10 12:00 |
08:39:23.21 |
+19:13:01.1 |
HIP 42542 |
15.60 |
| 2026-02-11 00:00 |
08:39:19.27 |
+19:13:11.8 |
HIP 42542 |
16.32 |
| 2026-02-11 12:00 |
08:39:15.34 |
+19:13:22.6 |
HIP 42542 |
17.07 |
| 2026-02-12 00:00 |
08:39:11.41 |
+19:13:33.3 |
HIP 42542 |
17.83 |
| 2026-02-12 12:00 |
08:39:07.50 |
+19:13:43.9 |
HIP 42542 |
18.60 |
| 2026-02-13 00:00 |
08:39:03.59 |
+19:13:54.5 |
HIP 42327 |
18.25 |
| 2026-02-13 12:00 |
08:38:59.70 |
+19:14:05.1 |
HIP 42327 |
17.32 |
| 2026-02-14 00:00 |
08:38:55.82 |
+19:14:15.6 |
HIP 42327 |
16.39 |
| 2026-02-14 12:00 |
08:38:51.95 |
+19:14:26.0 |
HIP 42327 |
15.46 |
| 2026-02-15 00:00 |
08:38:48.09 |
+19:14:36.4 |
HIP 42327 |
14.54 |
| 2026-02-15 12:00 |
08:38:44.24 |
+19:14:46.7 |
HIP 42327 |
13.62 |
| 2026-02-16 00:00 |
08:38:40.41 |
+19:14:57.0 |
HIP 42327 |
12.70 |
| 2026-02-16 12:00 |
08:38:36.58 |
+19:15:07.2 |
HIP 42327 |
11.79 |
| 2026-02-17 00:00 |
08:38:32.78 |
+19:15:17.3 |
HIP 42327 |
10.88 |
| 2026-02-17 12:00 |
08:38:28.98 |
+19:15:27.4 |
HIP 42327 |
9.98 |
| 2026-02-18 00:00 |
08:38:25.20 |
+19:15:37.5 |
HIP 42327 |
9.08 |
| 2026-02-18 12:00 |
08:38:21.43 |
+19:15:47.4 |
HIP 42327 |
8.18 |
| 2026-02-19 00:00 |
08:38:17.68 |
+19:15:57.3 |
HIP 42327 |
7.29 |
| 2026-02-19 12:00 |
08:38:13.95 |
+19:16:07.2 |
HIP 42327 |
6.41 |
| 2026-02-20 00:00 |
08:38:10.22 |
+19:16:16.9 |
HIP 42327 |
5.54 |
| 2026-02-20 12:00 |
08:38:06.52 |
+19:16:26.6 |
HIP 42327 |
4.67 |
| 2026-02-21 00:00 |
08:38:02.83 |
+19:16:36.3 |
HIP 42327 |
3.83 |
| 2026-02-21 12:00 |
08:37:59.15 |
+19:16:45.8 |
HIP 42327 |
3.01 |
| 2026-02-22 00:00 |
08:37:55.49 |
+19:16:55.3 |
HIP 42327 |
2.24 |
| 2026-02-22 12:00 |
08:37:51.85 |
+19:17:04.7 |
HIP 42327 |
1.59 |
| 2026-02-23 00:00 |
08:37:48.23 |
+19:17:14.1 |
HIP 42327 |
1.25 |
| 2026-02-23 12:00 |
08:37:44.62 |
+19:17:23.4 |
HIP 42327 |
1.45 |
| 2026-02-24 00:00 |
08:37:41.03 |
+19:17:32.6 |
HIP 42327 |
2.03 |