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 |
1.000 |
| 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) |
| 2026-07-29 00:00 |
17:32:30.62 |
-36:45:55.9 |
HIP 85927 |
24.19 |
| 2026-07-29 12:00 |
17:32:18.13 |
-36:44:49.5 |
HIP 85927 |
26.52 |
| 2026-07-30 00:00 |
17:32:05.84 |
-36:43:42.8 |
HIP 85927 |
28.90 |
| 2026-07-30 12:00 |
17:31:53.76 |
-36:42:35.7 |
HIP 85635 |
30.17 |
| 2026-07-31 00:00 |
17:31:41.90 |
-36:41:28.3 |
HIP 85635 |
29.31 |
| 2026-07-31 12:00 |
17:31:30.24 |
-36:40:20.7 |
HIP 85635 |
28.69 |
| 2026-08-01 00:00 |
17:31:18.79 |
-36:39:12.7 |
HIP 85587 |
27.49 |
| 2026-08-01 12:00 |
17:31:07.56 |
-36:38:04.5 |
HIP 85587 |
26.31 |
| 2026-08-02 00:00 |
17:30:56.54 |
-36:36:56.1 |
HIP 85587 |
25.35 |
| 2026-08-02 12:00 |
17:30:45.73 |
-36:35:47.4 |
HIP 85543 |
24.54 |
| 2026-08-03 00:00 |
17:30:35.14 |
-36:34:38.4 |
HIP 85543 |
23.23 |
| 2026-08-03 12:00 |
17:30:24.76 |
-36:33:29.3 |
HIP 85543 |
22.15 |
| 2026-08-04 00:00 |
17:30:14.59 |
-36:32:19.9 |
HIP 85543 |
21.31 |
| 2026-08-04 12:00 |
17:30:04.65 |
-36:31:10.4 |
HIP 85543 |
20.74 |
| 2026-08-05 00:00 |
17:29:54.92 |
-36:30:00.6 |
HIP 85543 |
20.44 |
| 2026-08-05 12:00 |
17:29:45.41 |
-36:28:50.7 |
HIP 85543 |
20.41 |
| 2026-08-06 00:00 |
17:29:36.11 |
-36:27:40.5 |
HIP 85543 |
20.65 |
| 2026-08-06 12:00 |
17:29:27.04 |
-36:26:30.3 |
HIP 85543 |
21.13 |
| 2026-08-07 00:00 |
17:29:18.18 |
-36:25:19.9 |
HIP 85543 |
21.82 |
| 2026-08-07 12:00 |
17:29:09.55 |
-36:24:09.3 |
HIP 85543 |
22.70 |
| 2026-08-08 00:00 |
17:29:01.14 |
-36:22:58.6 |
HIP 85543 |
23.74 |
| 2026-08-08 12:00 |
17:28:52.94 |
-36:21:47.8 |
HIP 85543 |
24.91 |
| 2026-08-09 00:00 |
17:28:44.97 |
-36:20:36.9 |
HIP 85543 |
26.18 |
| 2026-08-09 12:00 |
17:28:37.23 |
-36:19:25.9 |
HIP 85543 |
27.53 |
| 2026-08-10 00:00 |
17:28:29.70 |
-36:18:14.8 |
HIP 85543 |
28.94 |
| 2026-08-10 12:00 |
17:28:22.40 |
-36:17:03.7 |
HIP 85543 |
30.40 |
| 2026-08-11 00:00 |
17:28:15.32 |
-36:15:52.4 |
HIP 85543 |
31.89 |
| 2026-08-11 12:00 |
17:28:08.47 |
-36:14:41.1 |
HIP 85543 |
33.41 |
| 2026-08-12 00:00 |
17:28:01.84 |
-36:13:29.8 |
HIP 85652 |
34.85 |
| 2026-08-12 12:00 |
17:27:55.44 |
-36:12:18.4 |
HIP 85652 |
35.15 |
| 2026-08-13 00:00 |
17:27:49.26 |
-36:11:07.0 |
HIP 85652 |
35.50 |
| 2026-08-13 12:00 |
17:27:43.30 |
-36:09:55.6 |
HIP 85291 |
34.73 |
| 2026-08-14 00:00 |
17:27:37.57 |
-36:08:44.2 |
HIP 85291 |
33.07 |
| 2026-08-14 12:00 |
17:27:32.07 |
-36:07:32.7 |
HIP 85291 |
31.44 |
| 2026-08-15 00:00 |
17:27:26.79 |
-36:06:21.3 |
HIP 85291 |
29.84 |
| 2026-08-15 12:00 |
17:27:21.74 |
-36:05:09.9 |
HIP 85291 |
28.28 |
| 2026-08-16 00:00 |
17:27:16.91 |
-36:03:58.5 |
HIP 85291 |
26.75 |
| 2026-08-16 12:00 |
17:27:12.31 |
-36:02:47.2 |
HIP 85291 |
25.26 |
| 2026-08-17 00:00 |
17:27:07.93 |
-36:01:35.8 |
HIP 85291 |
23.80 |
| 2026-08-17 12:00 |
17:27:03.78 |
-36:00:24.6 |
HIP 85291 |
22.37 |
| 2026-08-18 00:00 |
17:26:59.85 |
-35:59:13.4 |
HIP 85291 |
20.99 |
| 2026-08-18 12:00 |
17:26:56.14 |
-35:58:02.3 |
HIP 85291 |
19.65 |
| 2026-08-19 00:00 |
17:26:52.66 |
-35:56:51.2 |
HIP 85291 |
18.35 |