メタデータ
| 項目 |
値 |
| Designation |
P/2013 R3 (Catalina-PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-08-05T03:50:44.286720Z |
| Orbit solution date (soln_date, UTC) |
2022-11-07T07:13:07Z |
| Obs used |
324 |
| NEO |
- |
| M1 |
7.200 |
| K1 |
30.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-10-13.0000000 |
| e |
0.27344549 |
| q (au) |
2.203607 |
| a (au) |
3.032955 |
| i (deg) |
0.898900 |
| Ω (om, deg) |
342.683923 |
| ω (w, deg) |
8.238778 |
| M (ma, deg) |
12.845309 |
等級
散乱 + 全体線形
$$
M_a = (15.274 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.274 |
| n |
2.000 |
| gf |
0.968 |
| gb |
-0.824 |
| k |
0.999 |
| δ90 |
9.995 |
| 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) |
| 2026-06-01 00:00 |
09:32:05.80 |
+14:42:45.5 |
HIP 46864 |
22.21 |
| 2026-06-01 12:00 |
09:32:27.72 |
+14:40:55.2 |
HIP 46864 |
18.00 |
| 2026-06-02 00:00 |
09:32:49.76 |
+14:39:04.1 |
HIP 46864 |
14.74 |
| 2026-06-02 12:00 |
09:33:11.94 |
+14:37:12.2 |
HIP 46864 |
13.20 |
| 2026-06-03 00:00 |
09:33:34.25 |
+14:35:19.5 |
HIP 46969 |
11.77 |
| 2026-06-03 12:00 |
09:33:56.69 |
+14:33:26.1 |
HIP 46969 |
6.65 |
| 2026-06-04 00:00 |
09:34:19.26 |
+14:31:31.8 |
HIP 46969 |
4.01 |
| 2026-06-04 12:00 |
09:34:41.95 |
+14:29:36.8 |
HIP 46969 |
7.44 |
| 2026-06-05 00:00 |
09:35:04.77 |
+14:27:41.0 |
HIP 47096 |
12.65 |
| 2026-06-05 12:00 |
09:35:27.72 |
+14:25:44.5 |
HIP 47096 |
6.78 |
| 2026-06-06 00:00 |
09:35:50.79 |
+14:23:47.1 |
HIP 47096 |
1.13 |
| 2026-06-06 12:00 |
09:36:13.99 |
+14:21:49.0 |
HIP 47096 |
5.19 |
| 2026-06-07 00:00 |
09:36:37.30 |
+14:19:50.2 |
HIP 47096 |
11.15 |
| 2026-06-07 12:00 |
09:37:00.74 |
+14:17:50.6 |
HIP 47266 |
14.98 |
| 2026-06-08 00:00 |
09:37:24.30 |
+14:15:50.2 |
HIP 47266 |
10.27 |
| 2026-06-08 12:00 |
09:37:47.98 |
+14:13:49.1 |
HIP 47266 |
7.74 |
| 2026-06-09 00:00 |
09:38:11.77 |
+14:11:47.2 |
HIP 47266 |
9.41 |
| 2026-06-09 12:00 |
09:38:35.68 |
+14:09:44.5 |
HIP 47266 |
13.88 |
| 2026-06-10 00:00 |
09:38:59.71 |
+14:07:41.1 |
HIP 47368 |
17.67 |
| 2026-06-10 12:00 |
09:39:23.85 |
+14:05:37.0 |
HIP 47368 |
20.29 |
| 2026-06-11 00:00 |
09:39:48.11 |
+14:03:32.1 |
HIP 47503 |
19.21 |
| 2026-06-11 12:00 |
09:40:12.48 |
+14:01:26.5 |
HIP 47503 |
14.25 |
| 2026-06-12 00:00 |
09:40:36.96 |
+13:59:20.1 |
HIP 47503 |
10.76 |
| 2026-06-12 12:00 |
09:41:01.55 |
+13:57:13.0 |
HIP 47503 |
10.39 |
| 2026-06-13 00:00 |
09:41:26.25 |
+13:55:05.2 |
HIP 47503 |
13.44 |
| 2026-06-13 12:00 |
09:41:51.06 |
+13:52:56.6 |
HIP 47503 |
18.31 |
| 2026-06-14 00:00 |
09:42:15.98 |
+13:50:47.3 |
HIP 47589 |
19.05 |
| 2026-06-14 12:00 |
09:42:41.00 |
+13:48:37.3 |
HIP 47589 |
18.24 |
| 2026-06-15 00:00 |
09:43:06.13 |
+13:46:26.6 |
HIP 47723 |
17.46 |
| 2026-06-15 12:00 |
09:43:31.36 |
+13:44:15.1 |
HIP 47723 |
17.32 |
| 2026-06-16 00:00 |
09:43:56.70 |
+13:42:02.9 |
HIP 47706 |
16.29 |
| 2026-06-16 12:00 |
09:44:22.14 |
+13:39:50.1 |
HIP 47706 |
17.34 |
| 2026-06-17 00:00 |
09:44:47.68 |
+13:37:36.5 |
HIP 47706 |
20.57 |
| 2026-06-17 12:00 |
09:45:13.32 |
+13:35:22.2 |
HIP 47930 |
14.65 |
| 2026-06-18 00:00 |
09:45:39.05 |
+13:33:07.2 |
HIP 47930 |
8.41 |
| 2026-06-18 12:00 |
09:46:04.89 |
+13:30:51.5 |
HIP 47930 |
3.89 |
| 2026-06-19 00:00 |
09:46:30.82 |
+13:28:35.2 |
HIP 47930 |
6.99 |
| 2026-06-19 12:00 |
09:46:56.84 |
+13:26:18.1 |
HIP 47930 |
13.16 |
| 2026-06-20 00:00 |
09:47:22.96 |
+13:24:00.4 |
HIP 48060 |
8.22 |
| 2026-06-20 12:00 |
09:47:49.17 |
+13:21:42.0 |
HIP 48060 |
6.98 |
| 2026-06-21 00:00 |
09:48:15.47 |
+13:19:22.9 |
HIP 48060 |
11.06 |
| 2026-06-21 12:00 |
09:48:41.86 |
+13:17:03.2 |
HIP 48060 |
17.00 |
| 2026-06-22 00:00 |
09:49:08.34 |
+13:14:42.8 |
HIP 48060 |
23.46 |