C/2007 D3 (LINEAR)
メタデータ
| 項目 |
値 |
| Designation |
C/2007 D3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-05-27T16:50:25.203840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:04Z |
| Obs used |
177 |
| NEO |
- |
| M1 |
8.800 |
| K1 |
8.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-11-28.0000000 |
| e |
0.99201293 |
| q (au) |
5.208969 |
| a (au) |
652.174844 |
| i (deg) |
45.920258 |
| Ω (om, deg) |
148.429528 |
| ω (w, deg) |
309.094137 |
| M (ma, deg) |
0.010906 |
等級
散乱 + 全体線形
$$
M_a = (8.625 + 3.167\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.625 |
| n |
3.167 |
| gf |
1.000 |
| gb |
-0.948 |
| 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 |
16:06:10.63 |
+25:36:57.3 |
HIP 78760 |
28.96 |
| 2026-02-03 12:00 |
16:06:12.22 |
+25:37:29.2 |
HIP 78760 |
29.60 |
| 2026-02-04 00:00 |
16:06:13.79 |
+25:38:01.3 |
HIP 78760 |
30.24 |
| 2026-02-04 12:00 |
16:06:15.32 |
+25:38:33.6 |
HIP 78760 |
30.87 |
| 2026-02-05 00:00 |
16:06:16.82 |
+25:39:06.0 |
HIP 78760 |
31.51 |
| 2026-02-05 12:00 |
16:06:18.30 |
+25:39:38.6 |
HIP 78760 |
32.14 |
| 2026-02-06 00:00 |
16:06:19.74 |
+25:40:11.3 |
HIP 78760 |
32.77 |
| 2026-02-06 12:00 |
16:06:21.15 |
+25:40:44.2 |
HIP 78760 |
33.39 |
| 2026-02-07 00:00 |
16:06:22.53 |
+25:41:17.3 |
HIP 78760 |
34.02 |
| 2026-02-07 12:00 |
16:06:23.88 |
+25:41:50.5 |
HIP 78760 |
34.64 |
| 2026-02-08 00:00 |
16:06:25.20 |
+25:42:23.9 |
HIP 78760 |
35.26 |
| 2026-02-08 12:00 |
16:06:26.49 |
+25:42:57.4 |
HIP 78760 |
35.88 |
| 2026-02-09 00:00 |
16:06:27.75 |
+25:43:31.1 |
HIP 78760 |
36.50 |
| 2026-02-09 12:00 |
16:06:28.98 |
+25:44:04.9 |
HIP 78760 |
37.11 |
| 2026-02-10 00:00 |
16:06:30.18 |
+25:44:38.8 |
HIP 78760 |
37.72 |
| 2026-02-10 12:00 |
16:06:31.34 |
+25:45:12.9 |
HIP 78760 |
38.33 |
| 2026-02-11 00:00 |
16:06:32.47 |
+25:45:47.1 |
HIP 78760 |
38.94 |
| 2026-02-11 12:00 |
16:06:33.58 |
+25:46:21.4 |
HIP 78760 |
39.55 |
| 2026-02-12 00:00 |
16:06:34.65 |
+25:46:55.9 |
HIP 78760 |
40.15 |
| 2026-02-12 12:00 |
16:06:35.68 |
+25:47:30.5 |
HIP 78760 |
40.76 |
| 2026-02-13 00:00 |
16:06:36.69 |
+25:48:05.3 |
HIP 78760 |
41.36 |
| 2026-02-13 12:00 |
16:06:37.67 |
+25:48:40.1 |
HIP 78760 |
41.96 |
| 2026-02-14 00:00 |
16:06:38.61 |
+25:49:15.1 |
HIP 78760 |
42.55 |
| 2026-02-14 12:00 |
16:06:39.52 |
+25:49:50.2 |
HIP 78760 |
43.15 |
| 2026-02-15 00:00 |
16:06:40.40 |
+25:50:25.4 |
HIP 79193 |
43.25 |
| 2026-02-15 12:00 |
16:06:41.25 |
+25:51:00.7 |
HIP 79193 |
42.93 |
| 2026-02-16 00:00 |
16:06:42.06 |
+25:51:36.1 |
HIP 79193 |
42.63 |
| 2026-02-16 12:00 |
16:06:42.85 |
+25:52:11.6 |
HIP 79193 |
42.35 |
| 2026-02-17 00:00 |
16:06:43.60 |
+25:52:47.3 |
HIP 79193 |
42.08 |
| 2026-02-17 12:00 |
16:06:44.31 |
+25:53:23.0 |
HIP 79193 |
41.82 |
| 2026-02-18 00:00 |
16:06:45.00 |
+25:53:58.8 |
HIP 79193 |
41.58 |
| 2026-02-18 12:00 |
16:06:45.65 |
+25:54:34.8 |
HIP 79193 |
41.35 |
| 2026-02-19 00:00 |
16:06:46.27 |
+25:55:10.8 |
HIP 79193 |
41.13 |
| 2026-02-19 12:00 |
16:06:46.86 |
+25:55:46.9 |
HIP 79193 |
40.94 |
| 2026-02-20 00:00 |
16:06:47.42 |
+25:56:23.0 |
HIP 79193 |
40.75 |
| 2026-02-20 12:00 |
16:06:47.94 |
+25:56:59.3 |
HIP 79193 |
40.59 |
| 2026-02-21 00:00 |
16:06:48.43 |
+25:57:35.6 |
HIP 79193 |
40.44 |
| 2026-02-21 12:00 |
16:06:48.89 |
+25:58:12.0 |
HIP 79193 |
40.30 |
| 2026-02-22 00:00 |
16:06:49.32 |
+25:58:48.5 |
HIP 79193 |
40.18 |
| 2026-02-22 12:00 |
16:06:49.71 |
+25:59:25.1 |
HIP 79193 |
40.08 |
| 2026-02-23 00:00 |
16:06:50.07 |
+26:00:01.7 |
HIP 79193 |
40.00 |
| 2026-02-23 12:00 |
16:06:50.40 |
+26:00:38.4 |
HIP 79193 |
39.93 |
| 2026-02-24 00:00 |
16:06:50.70 |
+26:01:15.1 |
HIP 79193 |
39.88 |