C/2007 O1 (LINEAR)
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) |
| 2026-02-03 00:00 |
04:22:34.53 |
+01:45:56.1 |
HIP 20439 |
16.25 |
| 2026-02-03 12:00 |
04:22:33.44 |
+01:46:09.6 |
HIP 20439 |
16.51 |
| 2026-02-04 00:00 |
04:22:32.36 |
+01:46:23.2 |
HIP 20439 |
16.77 |
| 2026-02-04 12:00 |
04:22:31.32 |
+01:46:36.9 |
HIP 20439 |
17.05 |
| 2026-02-05 00:00 |
04:22:30.30 |
+01:46:50.8 |
HIP 20439 |
17.32 |
| 2026-02-05 12:00 |
04:22:29.31 |
+01:47:04.7 |
HIP 20439 |
17.60 |
| 2026-02-06 00:00 |
04:22:28.34 |
+01:47:18.7 |
HIP 20439 |
17.87 |
| 2026-02-06 12:00 |
04:22:27.40 |
+01:47:32.9 |
HIP 20439 |
18.16 |
| 2026-02-07 00:00 |
04:22:26.49 |
+01:47:47.1 |
HIP 20439 |
18.44 |
| 2026-02-07 12:00 |
04:22:25.60 |
+01:48:01.5 |
HIP 20439 |
18.72 |
| 2026-02-08 00:00 |
04:22:24.75 |
+01:48:15.9 |
HIP 20439 |
19.01 |
| 2026-02-08 12:00 |
04:22:23.91 |
+01:48:30.5 |
HIP 20439 |
19.30 |
| 2026-02-09 00:00 |
04:22:23.11 |
+01:48:45.1 |
HIP 20439 |
19.58 |
| 2026-02-09 12:00 |
04:22:22.33 |
+01:48:59.9 |
HIP 20439 |
19.87 |
| 2026-02-10 00:00 |
04:22:21.58 |
+01:49:14.7 |
HIP 20439 |
20.16 |
| 2026-02-10 12:00 |
04:22:20.86 |
+01:49:29.7 |
HIP 20439 |
20.45 |
| 2026-02-11 00:00 |
04:22:20.16 |
+01:49:44.7 |
HIP 20439 |
20.74 |
| 2026-02-11 12:00 |
04:22:19.49 |
+01:49:59.8 |
HIP 20439 |
21.03 |
| 2026-02-12 00:00 |
04:22:18.85 |
+01:50:15.1 |
HIP 20439 |
21.32 |
| 2026-02-12 12:00 |
04:22:18.24 |
+01:50:30.4 |
HIP 20439 |
21.61 |
| 2026-02-13 00:00 |
04:22:17.65 |
+01:50:45.8 |
HIP 20439 |
21.90 |
| 2026-02-13 12:00 |
04:22:17.09 |
+01:51:01.3 |
HIP 20439 |
22.18 |
| 2026-02-14 00:00 |
04:22:16.56 |
+01:51:16.9 |
HIP 20439 |
22.47 |
| 2026-02-14 12:00 |
04:22:16.06 |
+01:51:32.6 |
HIP 20439 |
22.76 |
| 2026-02-15 00:00 |
04:22:15.58 |
+01:51:48.3 |
HIP 20439 |
23.04 |
| 2026-02-15 12:00 |
04:22:15.13 |
+01:52:04.2 |
HIP 20439 |
23.33 |
| 2026-02-16 00:00 |
04:22:14.71 |
+01:52:20.1 |
HIP 20439 |
23.62 |
| 2026-02-16 12:00 |
04:22:14.32 |
+01:52:36.1 |
HIP 20439 |
23.90 |
| 2026-02-17 00:00 |
04:22:13.96 |
+01:52:52.2 |
HIP 20439 |
24.18 |
| 2026-02-17 12:00 |
04:22:13.62 |
+01:53:08.4 |
HIP 20439 |
24.47 |
| 2026-02-18 00:00 |
04:22:13.31 |
+01:53:24.6 |
HIP 20439 |
24.75 |
| 2026-02-18 12:00 |
04:22:13.03 |
+01:53:41.0 |
HIP 20439 |
25.03 |
| 2026-02-19 00:00 |
04:22:12.77 |
+01:53:57.4 |
HIP 20439 |
25.31 |
| 2026-02-19 12:00 |
04:22:12.55 |
+01:54:13.9 |
HIP 20439 |
25.59 |
| 2026-02-20 00:00 |
04:22:12.35 |
+01:54:30.4 |
HIP 20439 |
25.86 |
| 2026-02-20 12:00 |
04:22:12.18 |
+01:54:47.0 |
HIP 20439 |
26.14 |
| 2026-02-21 00:00 |
04:22:12.04 |
+01:55:03.7 |
HIP 20439 |
26.42 |
| 2026-02-21 12:00 |
04:22:11.92 |
+01:55:20.5 |
HIP 20439 |
26.69 |
| 2026-02-22 00:00 |
04:22:11.83 |
+01:55:37.3 |
HIP 20439 |
26.97 |
| 2026-02-22 12:00 |
04:22:11.77 |
+01:55:54.2 |
HIP 20439 |
27.24 |
| 2026-02-23 00:00 |
04:22:11.74 |
+01:56:11.2 |
HIP 20439 |
27.51 |
| 2026-02-23 12:00 |
04:22:11.74 |
+01:56:28.2 |
HIP 20373 |
27.70 |
| 2026-02-24 00:00 |
04:22:11.76 |
+01:56:45.3 |
HIP 20373 |
27.42 |