336P/McNaught
メタデータ
| 項目 |
値 |
| Designation |
336P/McNaught |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-08-18T08:36:24.405120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:30Z |
| Obs used |
164 |
| NEO |
- |
| M1 |
8.200 |
| K1 |
19.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2008-07-30.0000000 |
| e |
0.45286158 |
| q (au) |
2.633290 |
| a (au) |
4.812840 |
| i (deg) |
18.562108 |
| Ω (om, deg) |
299.239956 |
| ω (w, deg) |
313.964670 |
| M (ma, deg) |
66.429832 |
等級
散乱 + 全体線形
$$
M_a = (12.526 + 3.855\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.526 |
| n |
3.855 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
08:10:38.54 |
+18:00:54.8 |
HIP 40167 |
31.42 |
| 2026-02-03 12:00 |
08:10:20.07 |
+18:01:07.5 |
HIP 39805 |
32.80 |
| 2026-02-04 00:00 |
08:10:01.65 |
+18:01:19.9 |
HIP 39805 |
28.46 |
| 2026-02-04 12:00 |
08:09:43.30 |
+18:01:32.2 |
HIP 39805 |
24.16 |
| 2026-02-05 00:00 |
08:09:25.02 |
+18:01:44.3 |
HIP 39805 |
19.89 |
| 2026-02-05 12:00 |
08:09:06.80 |
+18:01:56.3 |
HIP 39805 |
15.69 |
| 2026-02-06 00:00 |
08:08:48.66 |
+18:02:08.0 |
HIP 39805 |
11.60 |
| 2026-02-06 12:00 |
08:08:30.58 |
+18:02:19.6 |
HIP 39805 |
7.77 |
| 2026-02-07 00:00 |
08:08:12.59 |
+18:02:30.9 |
HIP 39805 |
4.83 |
| 2026-02-07 12:00 |
08:07:54.67 |
+18:02:42.0 |
HIP 39805 |
4.79 |
| 2026-02-08 00:00 |
08:07:36.84 |
+18:02:53.0 |
HIP 39805 |
7.65 |
| 2026-02-08 12:00 |
08:07:19.09 |
+18:03:03.7 |
HIP 39805 |
11.39 |
| 2026-02-09 00:00 |
08:07:01.43 |
+18:03:14.2 |
HIP 39805 |
15.36 |
| 2026-02-09 12:00 |
08:06:43.86 |
+18:03:24.4 |
HIP 39805 |
19.41 |
| 2026-02-10 00:00 |
08:06:26.38 |
+18:03:34.4 |
HIP 39805 |
23.48 |
| 2026-02-10 12:00 |
08:06:09.00 |
+18:03:44.2 |
HIP 39805 |
27.55 |
| 2026-02-11 00:00 |
08:05:51.73 |
+18:03:53.7 |
HIP 39587 |
27.52 |
| 2026-02-11 12:00 |
08:05:34.55 |
+18:04:03.0 |
HIP 39587 |
26.91 |
| 2026-02-12 00:00 |
08:05:17.48 |
+18:04:12.0 |
HIP 39587 |
26.91 |
| 2026-02-12 12:00 |
08:05:00.52 |
+18:04:20.8 |
HIP 39587 |
27.51 |
| 2026-02-13 00:00 |
08:04:43.67 |
+18:04:29.3 |
HIP 39434 |
25.83 |
| 2026-02-13 12:00 |
08:04:26.93 |
+18:04:37.5 |
HIP 39434 |
23.84 |
| 2026-02-14 00:00 |
08:04:10.31 |
+18:04:45.5 |
HIP 39434 |
22.39 |
| 2026-02-14 12:00 |
08:03:53.80 |
+18:04:53.2 |
HIP 39434 |
21.58 |
| 2026-02-15 00:00 |
08:03:37.42 |
+18:05:00.5 |
HIP 39434 |
21.46 |
| 2026-02-15 12:00 |
08:03:21.17 |
+18:05:07.6 |
HIP 39434 |
22.04 |
| 2026-02-16 00:00 |
08:03:05.04 |
+18:05:14.4 |
HIP 39434 |
23.23 |
| 2026-02-16 12:00 |
08:02:49.04 |
+18:05:20.9 |
HIP 39434 |
24.95 |
| 2026-02-17 00:00 |
08:02:33.18 |
+18:05:27.1 |
HIP 39215 |
25.65 |
| 2026-02-17 12:00 |
08:02:17.44 |
+18:05:33.0 |
HIP 39215 |
23.05 |
| 2026-02-18 00:00 |
08:02:01.85 |
+18:05:38.6 |
HIP 39215 |
20.82 |
| 2026-02-18 12:00 |
08:01:46.40 |
+18:05:43.8 |
HIP 39169 |
17.90 |
| 2026-02-19 00:00 |
08:01:31.08 |
+18:05:48.7 |
HIP 39169 |
14.82 |
| 2026-02-19 12:00 |
08:01:15.92 |
+18:05:53.3 |
HIP 39169 |
12.09 |
| 2026-02-20 00:00 |
08:01:00.90 |
+18:05:57.6 |
HIP 39169 |
9.94 |
| 2026-02-20 12:00 |
08:00:46.03 |
+18:06:01.5 |
HIP 39169 |
8.78 |
| 2026-02-21 00:00 |
08:00:31.31 |
+18:06:05.1 |
HIP 39169 |
8.97 |
| 2026-02-21 12:00 |
08:00:16.74 |
+18:06:08.4 |
HIP 39169 |
10.38 |
| 2026-02-22 00:00 |
08:00:02.33 |
+18:06:11.3 |
HIP 39169 |
12.59 |
| 2026-02-22 12:00 |
07:59:48.08 |
+18:06:13.8 |
HIP 39169 |
15.23 |
| 2026-02-23 00:00 |
07:59:33.99 |
+18:06:16.0 |
HIP 39169 |
18.08 |
| 2026-02-23 12:00 |
07:59:20.06 |
+18:06:17.9 |
HIP 39169 |
21.05 |
| 2026-02-24 00:00 |
07:59:06.29 |
+18:06:19.4 |
HIP 38890 |
22.52 |