メタデータ
| 項目 |
値 |
| Designation |
C/2007 O1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-06-03T06:51:31.746240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:10Z |
| Obs used |
164 |
| NEO |
- |
| M1 |
11.100 |
| K1 |
10.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-07-01.0000000 |
| e |
1.00482908 |
| q (au) |
2.876714 |
| a (au) |
-595.706845 |
| i (deg) |
24.381323 |
| Ω (om, deg) |
116.233626 |
| ω (w, deg) |
159.398541 |
| M (ma, deg) |
0.001879 |
等級
散乱 + 全体線形
$$
M_a = (14.576 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.576 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.520 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
04:23:01.85 |
+02:14:56.2 |
HIP 20373 |
20.69 |
| 2026-03-26 12:00 |
04:23:03.44 |
+02:15:14.7 |
HIP 20373 |
20.94 |
| 2026-03-27 00:00 |
04:23:05.07 |
+02:15:33.2 |
HIP 20373 |
21.19 |
| 2026-03-27 12:00 |
04:23:06.71 |
+02:15:51.6 |
HIP 20373 |
21.47 |
| 2026-03-28 00:00 |
04:23:08.38 |
+02:16:10.0 |
HIP 20373 |
21.75 |
| 2026-03-28 12:00 |
04:23:10.07 |
+02:16:28.4 |
HIP 20373 |
22.05 |
| 2026-03-29 00:00 |
04:23:11.78 |
+02:16:46.8 |
HIP 20373 |
22.36 |
| 2026-03-29 12:00 |
04:23:13.52 |
+02:17:05.1 |
HIP 20574 |
22.05 |
| 2026-03-30 00:00 |
04:23:15.27 |
+02:17:23.5 |
HIP 20574 |
21.52 |
| 2026-03-30 12:00 |
04:23:17.05 |
+02:17:41.8 |
HIP 20574 |
20.98 |
| 2026-03-31 00:00 |
04:23:18.85 |
+02:18:00.0 |
HIP 20574 |
20.43 |
| 2026-03-31 12:00 |
04:23:20.67 |
+02:18:18.3 |
HIP 20574 |
19.89 |
| 2026-04-01 00:00 |
04:23:22.51 |
+02:18:36.5 |
HIP 20574 |
19.34 |
| 2026-04-01 12:00 |
04:23:24.38 |
+02:18:54.7 |
HIP 20574 |
18.78 |
| 2026-04-02 00:00 |
04:23:26.26 |
+02:19:12.8 |
HIP 20574 |
18.22 |
| 2026-04-02 12:00 |
04:23:28.17 |
+02:19:31.0 |
HIP 20574 |
17.66 |
| 2026-04-03 00:00 |
04:23:30.10 |
+02:19:49.1 |
HIP 20574 |
17.09 |
| 2026-04-03 12:00 |
04:23:32.05 |
+02:20:07.1 |
HIP 20574 |
16.52 |
| 2026-04-04 00:00 |
04:23:34.01 |
+02:20:25.1 |
HIP 20574 |
15.94 |
| 2026-04-04 12:00 |
04:23:36.00 |
+02:20:43.1 |
HIP 20574 |
15.36 |
| 2026-04-05 00:00 |
04:23:38.01 |
+02:21:01.1 |
HIP 20574 |
14.78 |
| 2026-04-05 12:00 |
04:23:40.04 |
+02:21:19.0 |
HIP 20574 |
14.19 |
| 2026-04-06 00:00 |
04:23:42.09 |
+02:21:36.9 |
HIP 20574 |
13.60 |
| 2026-04-06 12:00 |
04:23:44.16 |
+02:21:54.7 |
HIP 20574 |
13.01 |
| 2026-04-07 00:00 |
04:23:46.25 |
+02:22:12.5 |
HIP 20574 |
12.41 |
| 2026-04-07 12:00 |
04:23:48.36 |
+02:22:30.2 |
HIP 20574 |
11.81 |
| 2026-04-08 00:00 |
04:23:50.49 |
+02:22:47.9 |
HIP 20574 |
11.21 |
| 2026-04-08 12:00 |
04:23:52.64 |
+02:23:05.6 |
HIP 20574 |
10.60 |
| 2026-04-09 00:00 |
04:23:54.81 |
+02:23:23.2 |
HIP 20574 |
9.99 |
| 2026-04-09 12:00 |
04:23:56.99 |
+02:23:40.8 |
HIP 20574 |
9.38 |
| 2026-04-10 00:00 |
04:23:59.20 |
+02:23:58.3 |
HIP 20574 |
8.77 |
| 2026-04-10 12:00 |
04:24:01.42 |
+02:24:15.8 |
HIP 20574 |
8.15 |
| 2026-04-11 00:00 |
04:24:03.67 |
+02:24:33.2 |
HIP 20574 |
7.54 |
| 2026-04-11 12:00 |
04:24:05.93 |
+02:24:50.6 |
HIP 20574 |
6.92 |
| 2026-04-12 00:00 |
04:24:08.21 |
+02:25:07.9 |
HIP 20574 |
6.31 |
| 2026-04-12 12:00 |
04:24:10.51 |
+02:25:25.1 |
HIP 20574 |
5.70 |
| 2026-04-13 00:00 |
04:24:12.82 |
+02:25:42.3 |
HIP 20574 |
5.09 |
| 2026-04-13 12:00 |
04:24:15.16 |
+02:25:59.5 |
HIP 20574 |
4.49 |
| 2026-04-14 00:00 |
04:24:17.51 |
+02:26:16.6 |
HIP 20574 |
3.91 |
| 2026-04-14 12:00 |
04:24:19.88 |
+02:26:33.6 |
HIP 20574 |
3.35 |
| 2026-04-15 00:00 |
04:24:22.26 |
+02:26:50.6 |
HIP 20574 |
2.83 |
| 2026-04-15 12:00 |
04:24:24.67 |
+02:27:07.5 |
HIP 20574 |
2.38 |
| 2026-04-16 00:00 |
04:24:27.09 |
+02:27:24.4 |
HIP 20574 |
2.05 |