メタデータ
| 項目 |
値 |
| Designation |
224P/LINEAR-NEAT |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2003-09-25T11:44:00.502080Z |
| Orbit solution date (soln_date, UTC) |
2024-05-30T01:12:28Z |
| Obs used |
107 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
18.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2006-03-19.0000000 |
| e |
0.43729725 |
| q (au) |
1.896039 |
| a (au) |
3.369521 |
| i (deg) |
14.873572 |
| Ω (om, deg) |
43.265140 |
| ω (w, deg) |
10.938819 |
| M (ma, deg) |
144.293100 |
等級
散乱 + 全体線形
$$
M_a = (16.775 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.775 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
15:50:00.44 |
-28:29:32.1 |
HIP 77537 |
10.86 |
| 2026-07-29 12:00 |
15:49:57.96 |
-28:29:04.6 |
HIP 77537 |
10.34 |
| 2026-07-30 00:00 |
15:49:55.72 |
-28:28:37.6 |
HIP 77537 |
9.85 |
| 2026-07-30 12:00 |
15:49:53.72 |
-28:28:11.2 |
HIP 77537 |
9.40 |
| 2026-07-31 00:00 |
15:49:51.97 |
-28:27:45.4 |
HIP 77537 |
8.97 |
| 2026-07-31 12:00 |
15:49:50.45 |
-28:27:20.1 |
HIP 77537 |
8.57 |
| 2026-08-01 00:00 |
15:49:49.19 |
-28:26:55.4 |
HIP 77537 |
8.19 |
| 2026-08-01 12:00 |
15:49:48.16 |
-28:26:31.3 |
HIP 77537 |
7.82 |
| 2026-08-02 00:00 |
15:49:47.37 |
-28:26:07.7 |
HIP 77537 |
7.46 |
| 2026-08-02 12:00 |
15:49:46.83 |
-28:25:44.8 |
HIP 77537 |
7.10 |
| 2026-08-03 00:00 |
15:49:46.53 |
-28:25:22.4 |
HIP 77537 |
6.75 |
| 2026-08-03 12:00 |
15:49:46.47 |
-28:25:00.6 |
HIP 77537 |
6.40 |
| 2026-08-04 00:00 |
15:49:46.65 |
-28:24:39.4 |
HIP 77537 |
6.05 |
| 2026-08-04 12:00 |
15:49:47.06 |
-28:24:18.8 |
HIP 77537 |
5.69 |
| 2026-08-05 00:00 |
15:49:47.72 |
-28:23:58.8 |
HIP 77537 |
5.34 |
| 2026-08-05 12:00 |
15:49:48.62 |
-28:23:39.4 |
HIP 77537 |
4.98 |
| 2026-08-06 00:00 |
15:49:49.76 |
-28:23:20.6 |
HIP 77537 |
4.62 |
| 2026-08-06 12:00 |
15:49:51.13 |
-28:23:02.4 |
HIP 77537 |
4.28 |
| 2026-08-07 00:00 |
15:49:52.75 |
-28:22:44.9 |
HIP 77537 |
3.96 |
| 2026-08-07 12:00 |
15:49:54.60 |
-28:22:27.9 |
HIP 77537 |
3.69 |
| 2026-08-08 00:00 |
15:49:56.68 |
-28:22:11.6 |
HIP 77537 |
3.49 |
| 2026-08-08 12:00 |
15:49:59.01 |
-28:21:55.9 |
HIP 77537 |
3.39 |
| 2026-08-09 00:00 |
15:50:01.57 |
-28:21:40.8 |
HIP 77537 |
3.42 |
| 2026-08-09 12:00 |
15:50:04.37 |
-28:21:26.3 |
HIP 77537 |
3.60 |
| 2026-08-10 00:00 |
15:50:07.40 |
-28:21:12.5 |
HIP 77537 |
3.94 |
| 2026-08-10 12:00 |
15:50:10.67 |
-28:20:59.3 |
HIP 77537 |
4.41 |
| 2026-08-11 00:00 |
15:50:14.18 |
-28:20:46.7 |
HIP 77537 |
5.01 |
| 2026-08-11 12:00 |
15:50:17.91 |
-28:20:34.8 |
HIP 77537 |
5.70 |
| 2026-08-12 00:00 |
15:50:21.88 |
-28:20:23.5 |
HIP 77537 |
6.49 |
| 2026-08-12 12:00 |
15:50:26.09 |
-28:20:12.9 |
HIP 77537 |
7.35 |
| 2026-08-13 00:00 |
15:50:30.52 |
-28:20:02.9 |
HIP 77537 |
8.29 |
| 2026-08-13 12:00 |
15:50:35.19 |
-28:19:53.5 |
HIP 77537 |
9.28 |
| 2026-08-14 00:00 |
15:50:40.09 |
-28:19:44.8 |
HIP 77537 |
10.34 |
| 2026-08-14 12:00 |
15:50:45.22 |
-28:19:36.7 |
HIP 77537 |
11.45 |
| 2026-08-15 00:00 |
15:50:50.57 |
-28:19:29.2 |
HIP 77537 |
12.62 |
| 2026-08-15 12:00 |
15:50:56.16 |
-28:19:22.4 |
HIP 77537 |
13.85 |
| 2026-08-16 00:00 |
15:51:01.97 |
-28:19:16.2 |
HIP 77719 |
14.54 |
| 2026-08-16 12:00 |
15:51:08.01 |
-28:19:10.7 |
HIP 77719 |
13.33 |
| 2026-08-17 00:00 |
15:51:14.27 |
-28:19:05.8 |
HIP 77719 |
12.10 |
| 2026-08-17 12:00 |
15:51:20.76 |
-28:19:01.6 |
HIP 77719 |
10.88 |
| 2026-08-18 00:00 |
15:51:27.48 |
-28:18:58.0 |
HIP 77719 |
9.68 |
| 2026-08-18 12:00 |
15:51:34.41 |
-28:18:55.0 |
HIP 77719 |
8.55 |
| 2026-08-19 00:00 |
15:51:41.57 |
-28:18:52.7 |
HIP 77719 |
7.54 |