C/2003 W1 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2003 W1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-11-09T11:06:46.327680Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:35Z |
| Obs used |
95 |
| NEO |
- |
| M1 |
16.400 |
| 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) |
2003-12-06.0000000 |
| e |
0.93434870 |
| q (au) |
1.652421 |
| a (au) |
25.169668 |
| i (deg) |
78.075971 |
| Ω (om, deg) |
256.742634 |
| ω (w, deg) |
113.288697 |
| M (ma, deg) |
0.207128 |
等級
散乱 + 全体線形
$$
M_a = (15.601 + 4.976\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.601 |
| n |
4.976 |
| 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) |
| 2026-02-03 00:00 |
08:37:15.18 |
-70:01:59.7 |
HIP 41985 |
19.80 |
| 2026-02-03 12:00 |
08:37:05.70 |
-70:01:54.9 |
HIP 41985 |
19.04 |
| 2026-02-04 00:00 |
08:36:56.22 |
-70:01:49.5 |
HIP 41985 |
18.28 |
| 2026-02-04 12:00 |
08:36:46.76 |
-70:01:43.7 |
HIP 41985 |
17.54 |
| 2026-02-05 00:00 |
08:36:37.31 |
-70:01:37.4 |
HIP 41985 |
16.80 |
| 2026-02-05 12:00 |
08:36:27.88 |
-70:01:30.6 |
HIP 41985 |
16.08 |
| 2026-02-06 00:00 |
08:36:18.46 |
-70:01:23.4 |
HIP 41985 |
15.37 |
| 2026-02-06 12:00 |
08:36:09.06 |
-70:01:15.6 |
HIP 41985 |
14.67 |
| 2026-02-07 00:00 |
08:35:59.68 |
-70:01:07.4 |
HIP 41985 |
13.99 |
| 2026-02-07 12:00 |
08:35:50.31 |
-70:00:58.7 |
HIP 41985 |
13.33 |
| 2026-02-08 00:00 |
08:35:40.96 |
-70:00:49.5 |
HIP 41985 |
12.69 |
| 2026-02-08 12:00 |
08:35:31.63 |
-70:00:39.8 |
HIP 41985 |
12.07 |
| 2026-02-09 00:00 |
08:35:22.33 |
-70:00:29.6 |
HIP 41985 |
11.49 |
| 2026-02-09 12:00 |
08:35:13.04 |
-70:00:19.0 |
HIP 41985 |
10.95 |
| 2026-02-10 00:00 |
08:35:03.78 |
-70:00:07.9 |
HIP 41985 |
10.44 |
| 2026-02-10 12:00 |
08:34:54.54 |
-69:59:56.3 |
HIP 41985 |
9.98 |
| 2026-02-11 00:00 |
08:34:45.33 |
-69:59:44.3 |
HIP 41985 |
9.58 |
| 2026-02-11 12:00 |
08:34:36.14 |
-69:59:31.7 |
HIP 41985 |
9.23 |
| 2026-02-12 00:00 |
08:34:26.97 |
-69:59:18.7 |
HIP 41985 |
8.96 |
| 2026-02-12 12:00 |
08:34:17.84 |
-69:59:05.3 |
HIP 41985 |
8.75 |
| 2026-02-13 00:00 |
08:34:08.73 |
-69:58:51.3 |
HIP 41985 |
8.63 |
| 2026-02-13 12:00 |
08:33:59.65 |
-69:58:36.9 |
HIP 41985 |
8.60 |
| 2026-02-14 00:00 |
08:33:50.61 |
-69:58:22.0 |
HIP 41985 |
8.64 |
| 2026-02-14 12:00 |
08:33:41.59 |
-69:58:06.7 |
HIP 41985 |
8.77 |
| 2026-02-15 00:00 |
08:33:32.60 |
-69:57:50.9 |
HIP 41985 |
8.98 |
| 2026-02-15 12:00 |
08:33:23.65 |
-69:57:34.6 |
HIP 41985 |
9.26 |
| 2026-02-16 00:00 |
08:33:14.73 |
-69:57:17.9 |
HIP 41985 |
9.61 |
| 2026-02-16 12:00 |
08:33:05.85 |
-69:57:00.7 |
HIP 41985 |
10.02 |
| 2026-02-17 00:00 |
08:32:57.00 |
-69:56:43.1 |
HIP 41985 |
10.49 |
| 2026-02-17 12:00 |
08:32:48.19 |
-69:56:25.0 |
HIP 41985 |
11.00 |
| 2026-02-18 00:00 |
08:32:39.41 |
-69:56:06.4 |
HIP 41985 |
11.55 |
| 2026-02-18 12:00 |
08:32:30.68 |
-69:55:47.4 |
HIP 41985 |
12.14 |
| 2026-02-19 00:00 |
08:32:21.98 |
-69:55:28.0 |
HIP 41985 |
12.75 |
| 2026-02-19 12:00 |
08:32:13.32 |
-69:55:08.1 |
HIP 41985 |
13.39 |
| 2026-02-20 00:00 |
08:32:04.70 |
-69:54:47.8 |
HIP 41985 |
14.06 |
| 2026-02-20 12:00 |
08:31:56.13 |
-69:54:27.0 |
HIP 41985 |
14.74 |
| 2026-02-21 00:00 |
08:31:47.59 |
-69:54:05.8 |
HIP 41985 |
15.44 |
| 2026-02-21 12:00 |
08:31:39.10 |
-69:53:44.1 |
HIP 41985 |
16.15 |
| 2026-02-22 00:00 |
08:31:30.66 |
-69:53:22.1 |
HIP 41985 |
16.88 |
| 2026-02-22 12:00 |
08:31:22.26 |
-69:52:59.6 |
HIP 41985 |
17.62 |
| 2026-02-23 00:00 |
08:31:13.90 |
-69:52:36.6 |
HIP 41985 |
18.36 |
| 2026-02-23 12:00 |
08:31:05.59 |
-69:52:13.2 |
HIP 41985 |
19.12 |
| 2026-02-24 00:00 |
08:30:57.33 |
-69:51:49.5 |
HIP 41985 |
19.88 |