メタデータ
| 項目 |
値 |
| Designation |
194P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-02-26T01:27:24.048000Z |
| Orbit solution date (soln_date, UTC) |
2024-05-07T15:48:58Z |
| Obs used |
152 |
| NEO |
- |
| M1 |
17.800 |
| K1 |
7.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-10-05.0000000 |
| e |
0.57432797 |
| q (au) |
1.705149 |
| a (au) |
4.005781 |
| i (deg) |
11.120766 |
| Ω (om, deg) |
352.049138 |
| ω (w, deg) |
130.540130 |
| M (ma, deg) |
161.897093 |
等級
散乱 + 全体線形
$$
M_a = (18.208 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.208 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-1.000 |
| k |
0.999 |
| 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) |
| 2026-05-12 00:00 |
18:22:02.82 |
-36:59:37.1 |
HIP 90074 |
21.90 |
| 2026-05-12 12:00 |
18:21:49.45 |
-37:00:36.4 |
HIP 89932 |
22.67 |
| 2026-05-13 00:00 |
18:21:35.87 |
-37:01:35.2 |
HIP 89932 |
22.55 |
| 2026-05-13 12:00 |
18:21:22.07 |
-37:02:33.5 |
HIP 89932 |
22.79 |
| 2026-05-14 00:00 |
18:21:08.07 |
-37:03:31.3 |
HIP 89932 |
23.38 |
| 2026-05-14 12:00 |
18:20:53.85 |
-37:04:28.7 |
HIP 89932 |
24.31 |
| 2026-05-15 00:00 |
18:20:39.43 |
-37:05:25.5 |
HIP 89920 |
24.04 |
| 2026-05-15 12:00 |
18:20:24.81 |
-37:06:21.8 |
HIP 89724 |
22.21 |
| 2026-05-16 00:00 |
18:20:09.98 |
-37:07:17.6 |
HIP 89724 |
19.11 |
| 2026-05-16 12:00 |
18:19:54.95 |
-37:08:12.8 |
HIP 89724 |
15.98 |
| 2026-05-17 00:00 |
18:19:39.72 |
-37:09:07.4 |
HIP 89724 |
12.81 |
| 2026-05-17 12:00 |
18:19:24.30 |
-37:10:01.5 |
HIP 89724 |
9.62 |
| 2026-05-18 00:00 |
18:19:08.67 |
-37:10:55.0 |
HIP 89724 |
6.40 |
| 2026-05-18 12:00 |
18:18:52.86 |
-37:11:47.9 |
HIP 89724 |
3.19 |
| 2026-05-19 00:00 |
18:18:36.85 |
-37:12:40.2 |
HIP 89724 |
0.92 |
| 2026-05-19 12:00 |
18:18:20.66 |
-37:13:31.9 |
HIP 89724 |
3.69 |
| 2026-05-20 00:00 |
18:18:04.28 |
-37:14:22.9 |
HIP 89724 |
7.01 |
| 2026-05-20 12:00 |
18:17:47.72 |
-37:15:13.3 |
HIP 89679 |
9.39 |
| 2026-05-21 00:00 |
18:17:30.97 |
-37:16:03.0 |
HIP 89679 |
11.72 |
| 2026-05-21 12:00 |
18:17:14.05 |
-37:16:52.1 |
HIP 89679 |
14.51 |
| 2026-05-22 00:00 |
18:16:56.95 |
-37:17:40.4 |
HIP 89679 |
17.56 |
| 2026-05-22 12:00 |
18:16:39.67 |
-37:18:28.1 |
HIP 89513 |
17.26 |
| 2026-05-23 00:00 |
18:16:22.22 |
-37:19:15.1 |
HIP 89513 |
16.68 |
| 2026-05-23 12:00 |
18:16:04.61 |
-37:20:01.3 |
HIP 89513 |
16.84 |
| 2026-05-24 00:00 |
18:15:46.82 |
-37:20:46.8 |
HIP 89513 |
17.73 |
| 2026-05-24 12:00 |
18:15:28.88 |
-37:21:31.6 |
HIP 89513 |
19.27 |
| 2026-05-25 00:00 |
18:15:10.77 |
-37:22:15.6 |
HIP 89389 |
18.80 |
| 2026-05-25 12:00 |
18:14:52.50 |
-37:22:58.9 |
HIP 89339 |
15.87 |
| 2026-05-26 00:00 |
18:14:34.08 |
-37:23:41.4 |
HIP 89339 |
13.27 |
| 2026-05-26 12:00 |
18:14:15.50 |
-37:24:23.1 |
HIP 89339 |
11.30 |
| 2026-05-27 00:00 |
18:13:56.77 |
-37:25:04.0 |
HIP 89339 |
10.34 |
| 2026-05-27 12:00 |
18:13:37.89 |
-37:25:44.1 |
HIP 89339 |
10.71 |
| 2026-05-28 00:00 |
18:13:18.86 |
-37:26:23.3 |
HIP 89339 |
12.30 |
| 2026-05-28 12:00 |
18:12:59.70 |
-37:27:01.8 |
HIP 89339 |
14.76 |
| 2026-05-29 00:00 |
18:12:40.39 |
-37:27:39.4 |
HIP 89339 |
17.73 |
| 2026-05-29 12:00 |
18:12:20.94 |
-37:28:16.2 |
HIP 89339 |
21.01 |
| 2026-05-30 00:00 |
18:12:01.36 |
-37:28:52.2 |
HIP 89339 |
24.50 |
| 2026-05-30 12:00 |
18:11:41.64 |
-37:29:27.2 |
HIP 89101 |
25.14 |
| 2026-05-31 00:00 |
18:11:21.80 |
-37:30:01.4 |
HIP 89101 |
23.78 |
| 2026-05-31 12:00 |
18:11:01.83 |
-37:30:34.7 |
HIP 89001 |
21.48 |
| 2026-06-01 00:00 |
18:10:41.73 |
-37:31:07.2 |
HIP 89001 |
18.81 |
| 2026-06-01 12:00 |
18:10:21.52 |
-37:31:38.7 |
HIP 89001 |
16.69 |
| 2026-06-02 00:00 |
18:10:01.18 |
-37:32:09.3 |
HIP 88919 |
14.11 |