メタデータ
| 項目 |
値 |
| Designation |
C/2005 YW (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-12-07T20:22:51.346560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:56Z |
| Obs used |
226 |
| NEO |
- |
| M1 |
8.600 |
| K1 |
11.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-11-26.0000000 |
| e |
0.98953342 |
| q (au) |
1.993011 |
| a (au) |
190.416587 |
| i (deg) |
40.543605 |
| Ω (om, deg) |
302.214425 |
| ω (w, deg) |
234.634030 |
| M (ma, deg) |
359.995555 |
等級
散乱 + 全体線形
$$
M_a = (11.687 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.687 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
21:31:14.71 |
+05:29:41.5 |
HIP 106242 |
5.24 |
| 2026-06-01 12:00 |
21:31:13.80 |
+05:29:54.0 |
HIP 106242 |
4.98 |
| 2026-06-02 00:00 |
21:31:12.86 |
+05:30:06.4 |
HIP 106242 |
4.73 |
| 2026-06-02 12:00 |
21:31:11.90 |
+05:30:18.6 |
HIP 106242 |
4.49 |
| 2026-06-03 00:00 |
21:31:10.91 |
+05:30:30.7 |
HIP 106242 |
4.26 |
| 2026-06-03 12:00 |
21:31:09.91 |
+05:30:42.6 |
HIP 106242 |
4.05 |
| 2026-06-04 00:00 |
21:31:08.88 |
+05:30:54.3 |
HIP 106242 |
3.85 |
| 2026-06-04 12:00 |
21:31:07.82 |
+05:31:05.9 |
HIP 106242 |
3.67 |
| 2026-06-05 00:00 |
21:31:06.74 |
+05:31:17.4 |
HIP 106242 |
3.52 |
| 2026-06-05 12:00 |
21:31:05.64 |
+05:31:28.7 |
HIP 106242 |
3.39 |
| 2026-06-06 00:00 |
21:31:04.52 |
+05:31:39.8 |
HIP 106242 |
3.30 |
| 2026-06-06 12:00 |
21:31:03.37 |
+05:31:50.8 |
HIP 106242 |
3.25 |
| 2026-06-07 00:00 |
21:31:02.20 |
+05:32:01.6 |
HIP 106242 |
3.24 |
| 2026-06-07 12:00 |
21:31:01.00 |
+05:32:12.2 |
HIP 106242 |
3.27 |
| 2026-06-08 00:00 |
21:30:59.78 |
+05:32:22.7 |
HIP 106242 |
3.34 |
| 2026-06-08 12:00 |
21:30:58.54 |
+05:32:33.0 |
HIP 106242 |
3.45 |
| 2026-06-09 00:00 |
21:30:57.28 |
+05:32:43.2 |
HIP 106242 |
3.60 |
| 2026-06-09 12:00 |
21:30:55.99 |
+05:32:53.1 |
HIP 106242 |
3.78 |
| 2026-06-10 00:00 |
21:30:54.68 |
+05:33:03.0 |
HIP 106242 |
4.00 |
| 2026-06-10 12:00 |
21:30:53.35 |
+05:33:12.6 |
HIP 106242 |
4.24 |
| 2026-06-11 00:00 |
21:30:52.00 |
+05:33:22.1 |
HIP 106242 |
4.50 |
| 2026-06-11 12:00 |
21:30:50.62 |
+05:33:31.4 |
HIP 106242 |
4.79 |
| 2026-06-12 00:00 |
21:30:49.22 |
+05:33:40.6 |
HIP 106242 |
5.09 |
| 2026-06-12 12:00 |
21:30:47.80 |
+05:33:49.6 |
HIP 106242 |
5.41 |
| 2026-06-13 00:00 |
21:30:46.36 |
+05:33:58.4 |
HIP 106242 |
5.74 |
| 2026-06-13 12:00 |
21:30:44.89 |
+05:34:07.0 |
HIP 106242 |
6.09 |
| 2026-06-14 00:00 |
21:30:43.40 |
+05:34:15.5 |
HIP 106242 |
6.44 |
| 2026-06-14 12:00 |
21:30:41.89 |
+05:34:23.8 |
HIP 106242 |
6.81 |
| 2026-06-15 00:00 |
21:30:40.36 |
+05:34:31.9 |
HIP 106242 |
7.19 |
| 2026-06-15 12:00 |
21:30:38.81 |
+05:34:39.9 |
HIP 106242 |
7.57 |
| 2026-06-16 00:00 |
21:30:37.23 |
+05:34:47.7 |
HIP 106242 |
7.96 |
| 2026-06-16 12:00 |
21:30:35.64 |
+05:34:55.3 |
HIP 106242 |
8.36 |
| 2026-06-17 00:00 |
21:30:34.02 |
+05:35:02.7 |
HIP 106242 |
8.77 |
| 2026-06-17 12:00 |
21:30:32.38 |
+05:35:10.0 |
HIP 106242 |
9.18 |
| 2026-06-18 00:00 |
21:30:30.72 |
+05:35:17.0 |
HIP 106242 |
9.60 |
| 2026-06-18 12:00 |
21:30:29.04 |
+05:35:23.9 |
HIP 106242 |
10.02 |
| 2026-06-19 00:00 |
21:30:27.34 |
+05:35:30.7 |
HIP 106242 |
10.45 |
| 2026-06-19 12:00 |
21:30:25.61 |
+05:35:37.2 |
HIP 106242 |
10.89 |
| 2026-06-20 00:00 |
21:30:23.87 |
+05:35:43.6 |
HIP 106242 |
11.33 |
| 2026-06-20 12:00 |
21:30:22.11 |
+05:35:49.8 |
HIP 106242 |
11.77 |
| 2026-06-21 00:00 |
21:30:20.33 |
+05:35:55.8 |
HIP 106242 |
12.22 |
| 2026-06-21 12:00 |
21:30:18.52 |
+05:36:01.7 |
HIP 106242 |
12.68 |
| 2026-06-22 00:00 |
21:30:16.70 |
+05:36:07.3 |
HIP 106242 |
13.14 |