メタデータ
| 項目 |
値 |
| Designation |
C/2001 W1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-12-24T21:37:29.415360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:11Z |
| Obs used |
101 |
| NEO |
- |
| M1 |
13.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-12-04.0000000 |
| e |
0.99892724 |
| q (au) |
2.399249 |
| a (au) |
2236.511889 |
| i (deg) |
118.645272 |
| Ω (om, deg) |
91.939782 |
| ω (w, deg) |
6.161504 |
| M (ma, deg) |
359.999805 |
等級
散乱 + 全体線形
$$
M_a = (14.635 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.635 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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) |
| 2026-06-01 00:00 |
18:48:53.78 |
-04:45:31.7 |
HIP 92278 |
13.22 |
| 2026-06-01 12:00 |
18:48:51.46 |
-04:45:29.8 |
HIP 92278 |
12.91 |
| 2026-06-02 00:00 |
18:48:49.12 |
-04:45:28.0 |
HIP 92278 |
12.61 |
| 2026-06-02 12:00 |
18:48:46.77 |
-04:45:26.3 |
HIP 92278 |
12.33 |
| 2026-06-03 00:00 |
18:48:44.42 |
-04:45:24.7 |
HIP 92278 |
12.07 |
| 2026-06-03 12:00 |
18:48:42.05 |
-04:45:23.2 |
HIP 92278 |
11.83 |
| 2026-06-04 00:00 |
18:48:39.67 |
-04:45:21.8 |
HIP 92278 |
11.61 |
| 2026-06-04 12:00 |
18:48:37.27 |
-04:45:20.5 |
HIP 92278 |
11.42 |
| 2026-06-05 00:00 |
18:48:34.87 |
-04:45:19.3 |
HIP 92278 |
11.25 |
| 2026-06-05 12:00 |
18:48:32.46 |
-04:45:18.2 |
HIP 92278 |
11.11 |
| 2026-06-06 00:00 |
18:48:30.03 |
-04:45:17.3 |
HIP 92278 |
11.00 |
| 2026-06-06 12:00 |
18:48:27.60 |
-04:45:16.4 |
HIP 92278 |
10.92 |
| 2026-06-07 00:00 |
18:48:25.16 |
-04:45:15.6 |
HIP 92278 |
10.87 |
| 2026-06-07 12:00 |
18:48:22.70 |
-04:45:15.0 |
HIP 92278 |
10.85 |
| 2026-06-08 00:00 |
18:48:20.24 |
-04:45:14.4 |
HIP 92278 |
10.86 |
| 2026-06-08 12:00 |
18:48:17.77 |
-04:45:14.0 |
HIP 92278 |
10.91 |
| 2026-06-09 00:00 |
18:48:15.29 |
-04:45:13.6 |
HIP 92278 |
10.99 |
| 2026-06-09 12:00 |
18:48:12.79 |
-04:45:13.4 |
HIP 92278 |
11.11 |
| 2026-06-10 00:00 |
18:48:10.29 |
-04:45:13.3 |
HIP 92278 |
11.25 |
| 2026-06-10 12:00 |
18:48:07.79 |
-04:45:13.3 |
HIP 92278 |
11.43 |
| 2026-06-11 00:00 |
18:48:05.27 |
-04:45:13.4 |
HIP 92278 |
11.64 |
| 2026-06-11 12:00 |
18:48:02.74 |
-04:45:13.6 |
HIP 92278 |
11.87 |
| 2026-06-12 00:00 |
18:48:00.21 |
-04:45:13.9 |
HIP 92278 |
12.14 |
| 2026-06-12 12:00 |
18:47:57.66 |
-04:45:14.3 |
HIP 92175 |
11.76 |
| 2026-06-13 00:00 |
18:47:55.11 |
-04:45:14.8 |
HIP 92175 |
11.13 |
| 2026-06-13 12:00 |
18:47:52.56 |
-04:45:15.4 |
HIP 92175 |
10.49 |
| 2026-06-14 00:00 |
18:47:49.99 |
-04:45:16.2 |
HIP 92175 |
9.85 |
| 2026-06-14 12:00 |
18:47:47.42 |
-04:45:17.0 |
HIP 92175 |
9.21 |
| 2026-06-15 00:00 |
18:47:44.84 |
-04:45:18.0 |
HIP 92175 |
8.57 |
| 2026-06-15 12:00 |
18:47:42.25 |
-04:45:19.0 |
HIP 92175 |
7.93 |
| 2026-06-16 00:00 |
18:47:39.66 |
-04:45:20.2 |
HIP 92175 |
7.28 |
| 2026-06-16 12:00 |
18:47:37.06 |
-04:45:21.5 |
HIP 92175 |
6.64 |
| 2026-06-17 00:00 |
18:47:34.45 |
-04:45:22.9 |
HIP 92175 |
5.99 |
| 2026-06-17 12:00 |
18:47:31.84 |
-04:45:24.4 |
HIP 92175 |
5.35 |
| 2026-06-18 00:00 |
18:47:29.22 |
-04:45:26.0 |
HIP 92175 |
4.70 |
| 2026-06-18 12:00 |
18:47:26.60 |
-04:45:27.7 |
HIP 92175 |
4.06 |
| 2026-06-19 00:00 |
18:47:23.97 |
-04:45:29.5 |
HIP 92175 |
3.42 |
| 2026-06-19 12:00 |
18:47:21.34 |
-04:45:31.4 |
HIP 92175 |
2.78 |
| 2026-06-20 00:00 |
18:47:18.70 |
-04:45:33.5 |
HIP 92175 |
2.16 |
| 2026-06-20 12:00 |
18:47:16.05 |
-04:45:35.6 |
HIP 92175 |
1.57 |
| 2026-06-21 00:00 |
18:47:13.40 |
-04:45:37.9 |
HIP 92175 |
1.05 |
| 2026-06-21 12:00 |
18:47:10.75 |
-04:45:40.2 |
HIP 92175 |
0.80 |
| 2026-06-22 00:00 |
18:47:08.09 |
-04:45:42.7 |
HIP 92175 |
1.03 |