219P/LINEAR
メタデータ
| 項目 |
値 |
| Designation |
219P/LINEAR |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-02-21T05:39:11.623680Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:06Z |
| Obs used |
1145 |
| NEO |
- |
| M1 |
5.900 |
| K1 |
24.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-06-19.0000000 |
| e |
0.35196615 |
| q (au) |
2.365480 |
| a (au) |
3.650242 |
| i (deg) |
11.528879 |
| Ω (om, deg) |
231.031617 |
| ω (w, deg) |
107.482590 |
| M (ma, deg) |
221.750045 |
等級
散乱 + 全体線形
$$
M_a = (9.086 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.086 |
| n |
6.000 |
| 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) |
| 2026-02-03 00:00 |
07:13:21.39 |
+09:12:44.4 |
HIP 35101 |
36.09 |
| 2026-02-03 12:00 |
07:13:04.41 |
+09:13:47.3 |
HIP 34672 |
34.36 |
| 2026-02-04 00:00 |
07:12:47.61 |
+09:14:50.6 |
HIP 34672 |
30.08 |
| 2026-02-04 12:00 |
07:12:30.99 |
+09:15:54.4 |
HIP 34672 |
25.85 |
| 2026-02-05 00:00 |
07:12:14.57 |
+09:16:58.5 |
HIP 34672 |
21.66 |
| 2026-02-05 12:00 |
07:11:58.33 |
+09:18:03.1 |
HIP 34672 |
17.51 |
| 2026-02-06 00:00 |
07:11:42.29 |
+09:19:08.1 |
HIP 34672 |
13.41 |
| 2026-02-06 12:00 |
07:11:26.44 |
+09:20:13.5 |
HIP 34672 |
9.35 |
| 2026-02-07 00:00 |
07:11:10.79 |
+09:21:19.3 |
HIP 34672 |
5.34 |
| 2026-02-07 12:00 |
07:10:55.34 |
+09:22:25.4 |
HIP 34672 |
1.37 |
| 2026-02-08 00:00 |
07:10:40.09 |
+09:23:31.9 |
HIP 34672 |
2.56 |
| 2026-02-08 12:00 |
07:10:25.04 |
+09:24:38.7 |
HIP 34672 |
6.43 |
| 2026-02-09 00:00 |
07:10:10.20 |
+09:25:45.9 |
HIP 34588 |
8.64 |
| 2026-02-09 12:00 |
07:09:55.57 |
+09:26:53.3 |
HIP 34588 |
8.43 |
| 2026-02-10 00:00 |
07:09:41.15 |
+09:28:01.1 |
HIP 34588 |
9.79 |
| 2026-02-10 12:00 |
07:09:26.94 |
+09:29:09.2 |
HIP 34588 |
12.17 |
| 2026-02-11 00:00 |
07:09:12.94 |
+09:30:17.5 |
HIP 34588 |
15.05 |
| 2026-02-11 12:00 |
07:08:59.16 |
+09:31:26.1 |
HIP 34588 |
18.17 |
| 2026-02-12 00:00 |
07:08:45.60 |
+09:32:35.0 |
HIP 34588 |
21.39 |
| 2026-02-12 12:00 |
07:08:32.26 |
+09:33:44.1 |
HIP 34588 |
24.67 |
| 2026-02-13 00:00 |
07:08:19.15 |
+09:34:53.5 |
HIP 34337 |
25.45 |
| 2026-02-13 12:00 |
07:08:06.25 |
+09:36:03.0 |
HIP 34337 |
22.42 |
| 2026-02-14 00:00 |
07:07:53.58 |
+09:37:12.8 |
HIP 34337 |
19.53 |
| 2026-02-14 12:00 |
07:07:41.14 |
+09:38:22.8 |
HIP 34337 |
16.84 |
| 2026-02-15 00:00 |
07:07:28.93 |
+09:39:32.9 |
HIP 34337 |
14.41 |
| 2026-02-15 12:00 |
07:07:16.95 |
+09:40:43.2 |
HIP 34337 |
12.36 |
| 2026-02-16 00:00 |
07:07:05.20 |
+09:41:53.7 |
HIP 34337 |
10.87 |
| 2026-02-16 12:00 |
07:06:53.68 |
+09:43:04.3 |
HIP 34337 |
10.12 |
| 2026-02-17 00:00 |
07:06:42.40 |
+09:44:15.1 |
HIP 34337 |
10.25 |
| 2026-02-17 12:00 |
07:06:31.36 |
+09:45:25.9 |
HIP 34337 |
11.17 |
| 2026-02-18 00:00 |
07:06:20.55 |
+09:46:36.9 |
HIP 34337 |
12.69 |
| 2026-02-18 12:00 |
07:06:09.98 |
+09:47:48.0 |
HIP 34337 |
14.57 |
| 2026-02-19 00:00 |
07:05:59.66 |
+09:48:59.1 |
HIP 34337 |
16.68 |
| 2026-02-19 12:00 |
07:05:49.57 |
+09:50:10.3 |
HIP 34337 |
18.90 |
| 2026-02-20 00:00 |
07:05:39.73 |
+09:51:21.6 |
HIP 34337 |
21.20 |
| 2026-02-20 12:00 |
07:05:30.12 |
+09:52:33.0 |
HIP 34337 |
23.52 |
| 2026-02-21 00:00 |
07:05:20.77 |
+09:53:44.3 |
HIP 34337 |
25.84 |
| 2026-02-21 12:00 |
07:05:11.65 |
+09:54:55.7 |
HIP 34272 |
26.53 |
| 2026-02-22 00:00 |
07:05:02.79 |
+09:56:07.1 |
HIP 34272 |
27.02 |
| 2026-02-22 12:00 |
07:04:54.17 |
+09:57:18.5 |
HIP 34272 |
27.68 |
| 2026-02-23 00:00 |
07:04:45.79 |
+09:58:29.9 |
HIP 34272 |
28.48 |
| 2026-02-23 12:00 |
07:04:37.66 |
+09:59:41.2 |
HIP 34272 |
29.41 |
| 2026-02-24 00:00 |
07:04:29.79 |
+10:00:52.6 |
HIP 33947 |
27.39 |