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) |
| 2026-07-29 00:00 |
04:34:12.91 |
+02:46:32.0 |
HIP 21509 |
44.31 |
| 2026-07-29 12:00 |
04:34:14.77 |
+02:46:24.2 |
HIP 21509 |
43.83 |
| 2026-07-30 00:00 |
04:34:16.60 |
+02:46:16.2 |
HIP 21509 |
43.36 |
| 2026-07-30 12:00 |
04:34:18.41 |
+02:46:08.2 |
HIP 21509 |
42.90 |
| 2026-07-31 00:00 |
04:34:20.21 |
+02:46:00.0 |
HIP 21509 |
42.44 |
| 2026-07-31 12:00 |
04:34:21.98 |
+02:45:51.8 |
HIP 21509 |
41.98 |
| 2026-08-01 00:00 |
04:34:23.73 |
+02:45:43.4 |
HIP 21509 |
41.53 |
| 2026-08-01 12:00 |
04:34:25.46 |
+02:45:34.9 |
HIP 21509 |
41.09 |
| 2026-08-02 00:00 |
04:34:27.16 |
+02:45:26.2 |
HIP 21509 |
40.65 |
| 2026-08-02 12:00 |
04:34:28.85 |
+02:45:17.5 |
HIP 21509 |
40.21 |
| 2026-08-03 00:00 |
04:34:30.52 |
+02:45:08.7 |
HIP 21509 |
39.78 |
| 2026-08-03 12:00 |
04:34:32.16 |
+02:44:59.7 |
HIP 21509 |
39.36 |
| 2026-08-04 00:00 |
04:34:33.78 |
+02:44:50.6 |
HIP 21509 |
38.94 |
| 2026-08-04 12:00 |
04:34:35.38 |
+02:44:41.5 |
HIP 21509 |
38.53 |
| 2026-08-05 00:00 |
04:34:36.96 |
+02:44:32.2 |
HIP 21509 |
38.13 |
| 2026-08-05 12:00 |
04:34:38.51 |
+02:44:22.8 |
HIP 21509 |
37.72 |
| 2026-08-06 00:00 |
04:34:40.05 |
+02:44:13.3 |
HIP 21509 |
37.33 |
| 2026-08-06 12:00 |
04:34:41.56 |
+02:44:03.6 |
HIP 21509 |
36.94 |
| 2026-08-07 00:00 |
04:34:43.05 |
+02:43:53.9 |
HIP 21509 |
36.56 |
| 2026-08-07 12:00 |
04:34:44.51 |
+02:43:44.1 |
HIP 21509 |
36.18 |
| 2026-08-08 00:00 |
04:34:45.96 |
+02:43:34.1 |
HIP 21509 |
35.81 |
| 2026-08-08 12:00 |
04:34:47.38 |
+02:43:24.1 |
HIP 21509 |
35.44 |
| 2026-08-09 00:00 |
04:34:48.77 |
+02:43:13.9 |
HIP 21509 |
35.08 |
| 2026-08-09 12:00 |
04:34:50.15 |
+02:43:03.7 |
HIP 21509 |
34.73 |
| 2026-08-10 00:00 |
04:34:51.50 |
+02:42:53.3 |
HIP 21509 |
34.39 |
| 2026-08-10 12:00 |
04:34:52.82 |
+02:42:42.8 |
HIP 21509 |
34.05 |
| 2026-08-11 00:00 |
04:34:54.13 |
+02:42:32.2 |
HIP 21509 |
33.71 |
| 2026-08-11 12:00 |
04:34:55.41 |
+02:42:21.6 |
HIP 21509 |
33.39 |
| 2026-08-12 00:00 |
04:34:56.67 |
+02:42:10.8 |
HIP 21509 |
33.07 |
| 2026-08-12 12:00 |
04:34:57.90 |
+02:42:00.0 |
HIP 21509 |
32.75 |
| 2026-08-13 00:00 |
04:34:59.11 |
+02:41:48.9 |
HIP 21509 |
32.45 |
| 2026-08-13 12:00 |
04:35:00.29 |
+02:41:37.8 |
HIP 21509 |
32.15 |
| 2026-08-14 00:00 |
04:35:01.45 |
+02:41:26.7 |
HIP 21509 |
31.86 |
| 2026-08-14 12:00 |
04:35:02.59 |
+02:41:15.4 |
HIP 21509 |
31.57 |
| 2026-08-15 00:00 |
04:35:03.70 |
+02:41:04.0 |
HIP 21509 |
31.29 |
| 2026-08-15 12:00 |
04:35:04.79 |
+02:40:52.6 |
HIP 21509 |
31.02 |
| 2026-08-16 00:00 |
04:35:05.85 |
+02:40:41.0 |
HIP 21509 |
30.76 |
| 2026-08-16 12:00 |
04:35:06.89 |
+02:40:29.3 |
HIP 21509 |
30.50 |
| 2026-08-17 00:00 |
04:35:07.91 |
+02:40:17.6 |
HIP 21509 |
30.25 |
| 2026-08-17 12:00 |
04:35:08.90 |
+02:40:05.8 |
HIP 21509 |
30.01 |
| 2026-08-18 00:00 |
04:35:09.86 |
+02:39:53.8 |
HIP 21509 |
29.78 |
| 2026-08-18 12:00 |
04:35:10.80 |
+02:39:41.8 |
HIP 21509 |
29.55 |
| 2026-08-19 00:00 |
04:35:11.72 |
+02:39:29.7 |
HIP 21509 |
29.33 |