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) |
| 2026-09-20 00:00 |
21:22:27.39 |
+05:09:08.1 |
HIP 105521 |
8.01 |
| 2026-09-20 12:00 |
21:22:25.17 |
+05:08:49.0 |
HIP 105521 |
7.57 |
| 2026-09-21 00:00 |
21:22:22.97 |
+05:08:29.9 |
HIP 105521 |
7.16 |
| 2026-09-21 12:00 |
21:22:20.78 |
+05:08:10.7 |
HIP 105521 |
6.78 |
| 2026-09-22 00:00 |
21:22:18.61 |
+05:07:51.6 |
HIP 105521 |
6.44 |
| 2026-09-22 12:00 |
21:22:16.46 |
+05:07:32.4 |
HIP 105521 |
6.15 |
| 2026-09-23 00:00 |
21:22:14.33 |
+05:07:13.2 |
HIP 105521 |
5.91 |
| 2026-09-23 12:00 |
21:22:12.21 |
+05:06:54.0 |
HIP 105521 |
5.72 |
| 2026-09-24 00:00 |
21:22:10.12 |
+05:06:34.7 |
HIP 105521 |
5.59 |
| 2026-09-24 12:00 |
21:22:08.04 |
+05:06:15.4 |
HIP 105521 |
5.53 |
| 2026-09-25 00:00 |
21:22:05.98 |
+05:05:56.1 |
HIP 105521 |
5.53 |
| 2026-09-25 12:00 |
21:22:03.93 |
+05:05:36.8 |
HIP 105521 |
5.59 |
| 2026-09-26 00:00 |
21:22:01.91 |
+05:05:17.5 |
HIP 105521 |
5.71 |
| 2026-09-26 12:00 |
21:21:59.90 |
+05:04:58.2 |
HIP 105521 |
5.89 |
| 2026-09-27 00:00 |
21:21:57.92 |
+05:04:38.8 |
HIP 105521 |
6.12 |
| 2026-09-27 12:00 |
21:21:55.95 |
+05:04:19.5 |
HIP 105521 |
6.38 |
| 2026-09-28 00:00 |
21:21:54.00 |
+05:04:00.1 |
HIP 105521 |
6.69 |
| 2026-09-28 12:00 |
21:21:52.08 |
+05:03:40.8 |
HIP 105521 |
7.02 |
| 2026-09-29 00:00 |
21:21:50.17 |
+05:03:21.4 |
HIP 105521 |
7.38 |
| 2026-09-29 12:00 |
21:21:48.28 |
+05:03:02.0 |
HIP 105521 |
7.76 |
| 2026-09-30 00:00 |
21:21:46.41 |
+05:02:42.6 |
HIP 105521 |
8.16 |
| 2026-09-30 12:00 |
21:21:44.56 |
+05:02:23.3 |
HIP 105521 |
8.57 |
| 2026-10-01 00:00 |
21:21:42.73 |
+05:02:03.9 |
HIP 105521 |
9.00 |
| 2026-10-01 12:00 |
21:21:40.92 |
+05:01:44.5 |
HIP 105521 |
9.43 |
| 2026-10-02 00:00 |
21:21:39.14 |
+05:01:25.1 |
HIP 105521 |
9.87 |
| 2026-10-02 12:00 |
21:21:37.37 |
+05:01:05.8 |
HIP 105521 |
10.31 |
| 2026-10-03 00:00 |
21:21:35.62 |
+05:00:46.4 |
HIP 105521 |
10.76 |
| 2026-10-03 12:00 |
21:21:33.90 |
+05:00:27.1 |
HIP 105521 |
11.22 |
| 2026-10-04 00:00 |
21:21:32.19 |
+05:00:07.7 |
HIP 105521 |
11.67 |
| 2026-10-04 12:00 |
21:21:30.51 |
+04:59:48.4 |
HIP 105521 |
12.13 |
| 2026-10-05 00:00 |
21:21:28.85 |
+04:59:29.1 |
HIP 105521 |
12.58 |
| 2026-10-05 12:00 |
21:21:27.20 |
+04:59:09.8 |
HIP 105521 |
13.04 |
| 2026-10-06 00:00 |
21:21:25.59 |
+04:58:50.5 |
HIP 105521 |
13.49 |
| 2026-10-06 12:00 |
21:21:23.99 |
+04:58:31.3 |
HIP 105521 |
13.95 |
| 2026-10-07 00:00 |
21:21:22.41 |
+04:58:12.0 |
HIP 105521 |
14.40 |
| 2026-10-07 12:00 |
21:21:20.86 |
+04:57:52.8 |
HIP 105521 |
14.85 |
| 2026-10-08 00:00 |
21:21:19.33 |
+04:57:33.6 |
HIP 105521 |
15.30 |
| 2026-10-08 12:00 |
21:21:17.82 |
+04:57:14.5 |
HIP 105521 |
15.74 |
| 2026-10-09 00:00 |
21:21:16.33 |
+04:56:55.3 |
HIP 105521 |
16.19 |
| 2026-10-09 12:00 |
21:21:14.87 |
+04:56:36.2 |
HIP 105521 |
16.63 |
| 2026-10-10 00:00 |
21:21:13.43 |
+04:56:17.1 |
HIP 105521 |
17.06 |
| 2026-10-10 12:00 |
21:21:12.01 |
+04:55:58.1 |
HIP 105521 |
17.50 |
| 2026-10-11 00:00 |
21:21:10.62 |
+04:55:39.1 |
HIP 105521 |
17.92 |