メタデータ
| 項目 |
値 |
| Designation |
193P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-11-24T15:42:23.192640Z |
| Orbit solution date (soln_date, UTC) |
2024-08-25T21:12:14Z |
| Obs used |
944 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
27.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-07-11.0000000 |
| e |
0.39417816 |
| q (au) |
2.166103 |
| a (au) |
3.575479 |
| i (deg) |
10.686952 |
| Ω (om, deg) |
335.193501 |
| ω (w, deg) |
8.435134 |
| M (ma, deg) |
33.288578 |
等級
散乱 + 全体線形
$$
M_a = (16.321 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.321 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.603 |
| k |
0.800 |
| δ90 |
9.996 |
| 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 |
12:23:55.44 |
-12:31:42.1 |
HIP 60532 |
17.23 |
| 2026-05-12 12:00 |
12:23:43.81 |
-12:30:08.7 |
HIP 60532 |
17.66 |
| 2026-05-13 00:00 |
12:23:32.39 |
-12:28:36.1 |
HIP 60532 |
18.62 |
| 2026-05-13 12:00 |
12:23:21.17 |
-12:27:04.3 |
HIP 60532 |
20.01 |
| 2026-05-14 00:00 |
12:23:10.17 |
-12:25:33.2 |
HIP 60532 |
21.72 |
| 2026-05-14 12:00 |
12:22:59.37 |
-12:24:03.1 |
HIP 60532 |
23.67 |
| 2026-05-15 00:00 |
12:22:48.79 |
-12:22:33.7 |
HIP 60532 |
25.79 |
| 2026-05-15 12:00 |
12:22:38.42 |
-12:21:05.3 |
HIP 60532 |
28.01 |
| 2026-05-16 00:00 |
12:22:28.27 |
-12:19:37.7 |
HIP 60532 |
30.30 |
| 2026-05-16 12:00 |
12:22:18.33 |
-12:18:11.1 |
HIP 60532 |
32.63 |
| 2026-05-17 00:00 |
12:22:08.61 |
-12:16:45.3 |
HIP 60421 |
32.88 |
| 2026-05-17 12:00 |
12:21:59.11 |
-12:15:20.5 |
HIP 60421 |
33.00 |
| 2026-05-18 00:00 |
12:21:49.82 |
-12:13:56.7 |
HIP 60421 |
33.32 |
| 2026-05-18 12:00 |
12:21:40.76 |
-12:12:33.8 |
HIP 60421 |
33.83 |
| 2026-05-19 00:00 |
12:21:31.91 |
-12:11:11.9 |
HIP 60421 |
34.49 |
| 2026-05-19 12:00 |
12:21:23.29 |
-12:09:51.0 |
HIP 60421 |
35.29 |
| 2026-05-20 00:00 |
12:21:14.89 |
-12:08:31.1 |
HIP 60421 |
36.21 |
| 2026-05-20 12:00 |
12:21:06.71 |
-12:07:12.2 |
HIP 60421 |
37.24 |
| 2026-05-21 00:00 |
12:20:58.76 |
-12:05:54.4 |
HIP 60237 |
37.22 |
| 2026-05-21 12:00 |
12:20:51.03 |
-12:04:37.6 |
HIP 60237 |
36.12 |
| 2026-05-22 00:00 |
12:20:43.52 |
-12:03:21.9 |
HIP 60237 |
35.14 |
| 2026-05-22 12:00 |
12:20:36.24 |
-12:02:07.2 |
HIP 60237 |
34.29 |
| 2026-05-23 00:00 |
12:20:29.18 |
-12:00:53.6 |
HIP 60237 |
33.55 |
| 2026-05-23 12:00 |
12:20:22.35 |
-11:59:41.1 |
HIP 60237 |
32.93 |
| 2026-05-24 00:00 |
12:20:15.75 |
-11:58:29.7 |
HIP 60237 |
32.43 |
| 2026-05-24 12:00 |
12:20:09.37 |
-11:57:19.5 |
HIP 60237 |
32.03 |
| 2026-05-25 00:00 |
12:20:03.21 |
-11:56:10.3 |
HIP 60237 |
31.74 |
| 2026-05-25 12:00 |
12:19:57.28 |
-11:55:02.3 |
HIP 60237 |
31.55 |
| 2026-05-26 00:00 |
12:19:51.58 |
-11:53:55.4 |
HIP 60237 |
31.44 |
| 2026-05-26 12:00 |
12:19:46.10 |
-11:52:49.6 |
HIP 60237 |
31.42 |
| 2026-05-27 00:00 |
12:19:40.85 |
-11:51:45.0 |
HIP 60237 |
31.46 |
| 2026-05-27 12:00 |
12:19:35.83 |
-11:50:41.6 |
HIP 60237 |
31.57 |
| 2026-05-28 00:00 |
12:19:31.03 |
-11:49:39.4 |
HIP 60237 |
31.74 |
| 2026-05-28 12:00 |
12:19:26.46 |
-11:48:38.3 |
HIP 60237 |
31.94 |
| 2026-05-29 00:00 |
12:19:22.12 |
-11:47:38.4 |
HIP 60237 |
32.19 |
| 2026-05-29 12:00 |
12:19:18.00 |
-11:46:39.7 |
HIP 60237 |
32.46 |
| 2026-05-30 00:00 |
12:19:14.11 |
-11:45:42.1 |
HIP 60237 |
32.76 |
| 2026-05-30 12:00 |
12:19:10.44 |
-11:44:45.8 |
HIP 60237 |
33.06 |
| 2026-05-31 00:00 |
12:19:07.00 |
-11:43:50.7 |
HIP 60237 |
33.38 |
| 2026-05-31 12:00 |
12:19:03.78 |
-11:42:56.9 |
HIP 60237 |
33.70 |
| 2026-06-01 00:00 |
12:19:00.79 |
-11:42:04.2 |
HIP 60237 |
34.01 |
| 2026-06-01 12:00 |
12:18:58.03 |
-11:41:12.8 |
HIP 60237 |
34.32 |
| 2026-06-02 00:00 |
12:18:55.49 |
-11:40:22.6 |
HIP 60237 |
34.61 |