メタデータ
| 項目 |
値 |
| Designation |
C/2003 R1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-06-29T14:48:29.845440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:31Z |
| Obs used |
170 |
| NEO |
- |
| M1 |
14.600 |
| K1 |
7.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-10-14.0000000 |
| e |
0.89331449 |
| q (au) |
2.101884 |
| a (au) |
19.701685 |
| i (deg) |
149.195633 |
| Ω (om, deg) |
356.689063 |
| ω (w, deg) |
302.690112 |
| M (ma, deg) |
1.199006 |
等級
散乱 + 全体線形
$$
M_a = (16.163 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.163 |
| n |
2.000 |
| gf |
0.875 |
| gb |
-0.841 |
| k |
0.985 |
| δ90 |
1.000 |
| 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 |
16:31:52.32 |
+07:35:10.8 |
HIP 80909 |
8.33 |
| 2026-03-26 12:00 |
16:31:50.46 |
+07:35:39.6 |
HIP 80909 |
7.70 |
| 2026-03-27 00:00 |
16:31:48.57 |
+07:36:08.3 |
HIP 80909 |
7.07 |
| 2026-03-27 12:00 |
16:31:46.65 |
+07:36:37.1 |
HIP 80909 |
6.45 |
| 2026-03-28 00:00 |
16:31:44.70 |
+07:37:05.8 |
HIP 80909 |
5.83 |
| 2026-03-28 12:00 |
16:31:42.72 |
+07:37:34.4 |
HIP 80909 |
5.21 |
| 2026-03-29 00:00 |
16:31:40.71 |
+07:38:03.0 |
HIP 80909 |
4.61 |
| 2026-03-29 12:00 |
16:31:38.67 |
+07:38:31.6 |
HIP 80909 |
4.03 |
| 2026-03-30 00:00 |
16:31:36.60 |
+07:39:00.0 |
HIP 80909 |
3.49 |
| 2026-03-30 12:00 |
16:31:34.50 |
+07:39:28.5 |
HIP 80909 |
3.00 |
| 2026-03-31 00:00 |
16:31:32.37 |
+07:39:56.9 |
HIP 80909 |
2.61 |
| 2026-03-31 12:00 |
16:31:30.22 |
+07:40:25.2 |
HIP 80909 |
2.36 |
| 2026-04-01 00:00 |
16:31:28.03 |
+07:40:53.4 |
HIP 80909 |
2.30 |
| 2026-04-01 12:00 |
16:31:25.82 |
+07:41:21.6 |
HIP 80909 |
2.47 |
| 2026-04-02 00:00 |
16:31:23.57 |
+07:41:49.8 |
HIP 80909 |
2.81 |
| 2026-04-02 12:00 |
16:31:21.30 |
+07:42:17.8 |
HIP 80909 |
3.28 |
| 2026-04-03 00:00 |
16:31:19.00 |
+07:42:45.8 |
HIP 80909 |
3.83 |
| 2026-04-03 12:00 |
16:31:16.67 |
+07:43:13.8 |
HIP 80909 |
4.44 |
| 2026-04-04 00:00 |
16:31:14.31 |
+07:43:41.6 |
HIP 80909 |
5.08 |
| 2026-04-04 12:00 |
16:31:11.93 |
+07:44:09.4 |
HIP 80909 |
5.76 |
| 2026-04-05 00:00 |
16:31:09.52 |
+07:44:37.1 |
HIP 80909 |
6.45 |
| 2026-04-05 12:00 |
16:31:07.07 |
+07:45:04.7 |
HIP 80909 |
7.15 |
| 2026-04-06 00:00 |
16:31:04.61 |
+07:45:32.2 |
HIP 80909 |
7.87 |
| 2026-04-06 12:00 |
16:31:02.11 |
+07:45:59.7 |
HIP 80909 |
8.60 |
| 2026-04-07 00:00 |
16:30:59.59 |
+07:46:27.1 |
HIP 80909 |
9.34 |
| 2026-04-07 12:00 |
16:30:57.04 |
+07:46:54.3 |
HIP 80909 |
10.09 |
| 2026-04-08 00:00 |
16:30:54.46 |
+07:47:21.5 |
HIP 80909 |
10.85 |
| 2026-04-08 12:00 |
16:30:51.86 |
+07:47:48.6 |
HIP 80909 |
11.61 |
| 2026-04-09 00:00 |
16:30:49.23 |
+07:48:15.6 |
HIP 80909 |
12.38 |
| 2026-04-09 12:00 |
16:30:46.57 |
+07:48:42.5 |
HIP 80909 |
13.15 |
| 2026-04-10 00:00 |
16:30:43.89 |
+07:49:09.3 |
HIP 80909 |
13.93 |
| 2026-04-10 12:00 |
16:30:41.18 |
+07:49:36.0 |
HIP 80791 |
14.28 |
| 2026-04-11 00:00 |
16:30:38.44 |
+07:50:02.6 |
HIP 80791 |
13.80 |
| 2026-04-11 12:00 |
16:30:35.68 |
+07:50:29.1 |
HIP 80791 |
13.34 |
| 2026-04-12 00:00 |
16:30:32.89 |
+07:50:55.5 |
HIP 80791 |
12.92 |
| 2026-04-12 12:00 |
16:30:30.08 |
+07:51:21.8 |
HIP 80791 |
12.52 |
| 2026-04-13 00:00 |
16:30:27.25 |
+07:51:48.0 |
HIP 80791 |
12.16 |
| 2026-04-13 12:00 |
16:30:24.38 |
+07:52:14.0 |
HIP 80791 |
11.85 |
| 2026-04-14 00:00 |
16:30:21.50 |
+07:52:39.9 |
HIP 80791 |
11.58 |
| 2026-04-14 12:00 |
16:30:18.59 |
+07:53:05.8 |
HIP 80791 |
11.36 |
| 2026-04-15 00:00 |
16:30:15.65 |
+07:53:31.5 |
HIP 80791 |
11.19 |
| 2026-04-15 12:00 |
16:30:12.69 |
+07:53:57.0 |
HIP 80791 |
11.08 |
| 2026-04-16 00:00 |
16:30:09.71 |
+07:54:22.5 |
HIP 80791 |
11.03 |