メタデータ
| 項目 |
値 |
| Designation |
301P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2001-01-30T16:28:03.817920Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:17Z |
| Obs used |
126 |
| NEO |
- |
| M1 |
10.900 |
| K1 |
16.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-02-05.0000000 |
| e |
0.58742378 |
| q (au) |
2.346309 |
| a (au) |
5.686971 |
| i (deg) |
10.618305 |
| Ω (om, deg) |
355.783208 |
| ω (w, deg) |
189.400943 |
| M (ma, deg) |
53.438629 |
等級
散乱 + 全体線形
$$
M_a = (11.907 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.907 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.971 |
| δ90 |
1.000 |
| 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 |
03:42:49.18 |
+28:10:45.2 |
HIP 17299 |
11.53 |
| 2026-05-12 12:00 |
03:43:15.75 |
+28:12:04.6 |
HIP 17299 |
15.80 |
| 2026-05-13 00:00 |
03:43:42.35 |
+28:13:24.1 |
HIP 17299 |
20.94 |
| 2026-05-13 12:00 |
03:44:09.00 |
+28:14:43.8 |
HIP 17482 |
20.99 |
| 2026-05-14 00:00 |
03:44:35.68 |
+28:16:03.5 |
HIP 17482 |
20.87 |
| 2026-05-14 12:00 |
03:45:02.40 |
+28:17:23.3 |
HIP 17482 |
22.43 |
| 2026-05-15 00:00 |
03:45:29.16 |
+28:18:43.1 |
HIP 17547 |
21.41 |
| 2026-05-15 12:00 |
03:45:55.95 |
+28:20:03.1 |
HIP 17547 |
21.03 |
| 2026-05-16 00:00 |
03:46:22.77 |
+28:21:23.1 |
HIP 17662 |
20.88 |
| 2026-05-16 12:00 |
03:46:49.63 |
+28:22:43.2 |
HIP 17662 |
18.16 |
| 2026-05-17 00:00 |
03:47:16.52 |
+28:24:03.4 |
HIP 17662 |
17.23 |
| 2026-05-17 12:00 |
03:47:43.45 |
+28:25:23.7 |
HIP 17662 |
18.37 |
| 2026-05-18 00:00 |
03:48:10.41 |
+28:26:44.0 |
HIP 17871 |
20.05 |
| 2026-05-18 12:00 |
03:48:37.39 |
+28:28:04.4 |
HIP 17871 |
14.60 |
| 2026-05-19 00:00 |
03:49:04.41 |
+28:29:24.8 |
HIP 17871 |
9.91 |
| 2026-05-19 12:00 |
03:49:31.46 |
+28:30:45.3 |
HIP 17871 |
7.56 |
| 2026-05-20 00:00 |
03:49:58.54 |
+28:32:05.8 |
HIP 17871 |
9.51 |
| 2026-05-20 12:00 |
03:50:25.64 |
+28:33:26.4 |
HIP 17871 |
14.07 |
| 2026-05-21 00:00 |
03:50:52.77 |
+28:34:47.1 |
HIP 17871 |
19.50 |
| 2026-05-21 12:00 |
03:51:19.93 |
+28:36:07.8 |
HIP 17871 |
25.24 |
| 2026-05-22 00:00 |
03:51:47.12 |
+28:37:28.5 |
HIP 18119 |
30.77 |
| 2026-05-22 12:00 |
03:52:14.33 |
+28:38:49.3 |
HIP 18119 |
30.93 |
| 2026-05-23 00:00 |
03:52:41.57 |
+28:40:10.1 |
HIP 18119 |
32.28 |
| 2026-05-23 12:00 |
03:53:08.83 |
+28:41:30.9 |
HIP 18208 |
33.24 |
| 2026-05-24 00:00 |
03:53:36.11 |
+28:42:51.8 |
HIP 18208 |
33.98 |
| 2026-05-24 12:00 |
03:54:03.42 |
+28:44:12.7 |
HIP 18320 |
35.17 |
| 2026-05-25 00:00 |
03:54:30.75 |
+28:45:33.6 |
HIP 18320 |
34.86 |
| 2026-05-25 12:00 |
03:54:58.10 |
+28:46:54.5 |
HIP 18320 |
35.62 |
| 2026-05-26 00:00 |
03:55:25.47 |
+28:48:15.5 |
HIP 18320 |
37.39 |
| 2026-05-26 12:00 |
03:55:52.86 |
+28:49:36.5 |
HIP 18386 |
39.06 |
| 2026-05-27 00:00 |
03:56:20.28 |
+28:50:57.5 |
HIP 18386 |
41.00 |
| 2026-05-27 12:00 |
03:56:47.71 |
+28:52:18.5 |
HIP 18472 |
39.66 |
| 2026-05-28 00:00 |
03:57:15.17 |
+28:53:39.5 |
HIP 18472 |
38.63 |
| 2026-05-28 12:00 |
03:57:42.64 |
+28:55:00.5 |
HIP 18472 |
38.56 |
| 2026-05-29 00:00 |
03:58:10.13 |
+28:56:21.6 |
HIP 18472 |
39.46 |
| 2026-05-29 12:00 |
03:58:37.63 |
+28:57:42.6 |
HIP 18472 |
41.27 |
| 2026-05-30 00:00 |
03:59:05.16 |
+28:59:03.7 |
HIP 18781 |
42.30 |
| 2026-05-30 12:00 |
03:59:32.70 |
+29:00:24.7 |
HIP 18781 |
39.16 |
| 2026-05-31 00:00 |
04:00:00.26 |
+29:01:45.8 |
HIP 18781 |
36.79 |
| 2026-05-31 12:00 |
04:00:27.83 |
+29:03:06.8 |
HIP 18781 |
35.36 |
| 2026-06-01 00:00 |
04:00:55.42 |
+29:04:27.9 |
HIP 18781 |
34.99 |
| 2026-06-01 12:00 |
04:01:23.02 |
+29:05:48.9 |
HIP 18965 |
32.80 |
| 2026-06-02 00:00 |
04:01:50.63 |
+29:07:10.0 |
HIP 18965 |
26.63 |