メタデータ
| 項目 |
値 |
| Designation |
459P/Catalina |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-01-28T07:40:35.670720Z |
| Orbit solution date (soln_date, UTC) |
2024-07-07T00:42:23Z |
| Obs used |
1061 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2010-10-08T10:01:56.064000Z |
| Discovery magnitude (MPC) |
20.10 V |
| Discovery observatory (MPC) |
691 · Steward Observatory, Kitt Peak-Spacewatch |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-12-21.0000000 |
| e |
0.52243972 |
| q (au) |
1.600719 |
| a (au) |
3.351867 |
| i (deg) |
13.708393 |
| Ω (om, deg) |
272.043349 |
| ω (w, deg) |
189.881941 |
| M (ma, deg) |
111.091091 |
等級
散乱 + 全体線形
$$
M_a = (15.932 + 2.395\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.932 |
| n |
2.395 |
| gf |
1.000 |
| gb |
-0.887 |
| k |
0.999 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
19:55:48.64 |
-16:11:16.6 |
HIP 98113 |
13.72 |
| 2026-06-01 12:00 |
19:55:37.88 |
-16:11:11.4 |
HIP 98113 |
15.45 |
| 2026-06-02 00:00 |
19:55:26.92 |
-16:11:06.8 |
HIP 98113 |
17.43 |
| 2026-06-02 12:00 |
19:55:15.76 |
-16:11:02.8 |
HIP 97972 |
18.26 |
| 2026-06-03 00:00 |
19:55:04.41 |
-16:10:59.4 |
HIP 97972 |
17.13 |
| 2026-06-03 12:00 |
19:54:52.86 |
-16:10:56.6 |
HIP 97972 |
16.38 |
| 2026-06-04 00:00 |
19:54:41.11 |
-16:10:54.4 |
HIP 97972 |
16.09 |
| 2026-06-04 12:00 |
19:54:29.17 |
-16:10:52.8 |
HIP 97972 |
16.31 |
| 2026-06-05 00:00 |
19:54:17.03 |
-16:10:51.8 |
HIP 97972 |
17.05 |
| 2026-06-05 12:00 |
19:54:04.70 |
-16:10:51.4 |
HIP 97972 |
18.25 |
| 2026-06-06 00:00 |
19:53:52.18 |
-16:10:51.7 |
HIP 97972 |
19.87 |
| 2026-06-06 12:00 |
19:53:39.47 |
-16:10:52.5 |
HIP 97972 |
21.82 |
| 2026-06-07 00:00 |
19:53:26.57 |
-16:10:53.9 |
HIP 97972 |
24.04 |
| 2026-06-07 12:00 |
19:53:13.48 |
-16:10:55.9 |
HIP 97972 |
26.48 |
| 2026-06-08 00:00 |
19:53:00.20 |
-16:10:58.5 |
HIP 97715 |
28.82 |
| 2026-06-08 12:00 |
19:52:46.74 |
-16:11:01.7 |
HIP 97715 |
26.49 |
| 2026-06-09 00:00 |
19:52:33.09 |
-16:11:05.4 |
HIP 97715 |
24.36 |
| 2026-06-09 12:00 |
19:52:19.26 |
-16:11:09.8 |
HIP 97715 |
22.49 |
| 2026-06-10 00:00 |
19:52:05.24 |
-16:11:14.8 |
HIP 97715 |
20.97 |
| 2026-06-10 12:00 |
19:51:51.04 |
-16:11:20.3 |
HIP 97715 |
19.91 |
| 2026-06-11 00:00 |
19:51:36.67 |
-16:11:26.4 |
HIP 97715 |
19.40 |
| 2026-06-11 12:00 |
19:51:22.11 |
-16:11:33.1 |
HIP 97715 |
19.52 |
| 2026-06-12 00:00 |
19:51:07.37 |
-16:11:40.3 |
HIP 97715 |
20.27 |
| 2026-06-12 12:00 |
19:50:52.46 |
-16:11:48.2 |
HIP 97715 |
21.61 |
| 2026-06-13 00:00 |
19:50:37.38 |
-16:11:56.6 |
HIP 97715 |
23.46 |
| 2026-06-13 12:00 |
19:50:22.13 |
-16:12:05.5 |
HIP 97715 |
25.72 |
| 2026-06-14 00:00 |
19:50:06.70 |
-16:12:15.1 |
HIP 97460 |
22.41 |
| 2026-06-14 12:00 |
19:49:51.10 |
-16:12:25.1 |
HIP 97460 |
18.71 |
| 2026-06-15 00:00 |
19:49:35.34 |
-16:12:35.8 |
HIP 97460 |
15.01 |
| 2026-06-15 12:00 |
19:49:19.41 |
-16:12:47.0 |
HIP 97460 |
11.32 |
| 2026-06-16 00:00 |
19:49:03.32 |
-16:12:58.7 |
HIP 97460 |
7.73 |
| 2026-06-16 12:00 |
19:48:47.07 |
-16:13:11.0 |
HIP 97460 |
4.61 |
| 2026-06-17 00:00 |
19:48:30.67 |
-16:13:23.8 |
HIP 97460 |
3.66 |
| 2026-06-17 12:00 |
19:48:14.10 |
-16:13:37.1 |
HIP 97460 |
6.09 |
| 2026-06-18 00:00 |
19:47:57.38 |
-16:13:51.0 |
HIP 97460 |
9.65 |
| 2026-06-18 12:00 |
19:47:40.51 |
-16:14:05.3 |
HIP 97460 |
13.51 |
| 2026-06-19 00:00 |
19:47:23.49 |
-16:14:20.2 |
HIP 97303 |
12.45 |
| 2026-06-19 12:00 |
19:47:06.32 |
-16:14:35.7 |
HIP 97303 |
8.45 |
| 2026-06-20 00:00 |
19:46:49.00 |
-16:14:51.6 |
HIP 97303 |
4.66 |
| 2026-06-20 12:00 |
19:46:31.54 |
-16:15:08.0 |
HIP 97303 |
2.58 |
| 2026-06-21 00:00 |
19:46:13.94 |
-16:15:24.9 |
HIP 97303 |
5.22 |
| 2026-06-21 12:00 |
19:45:56.20 |
-16:15:42.3 |
HIP 97303 |
9.18 |
| 2026-06-22 00:00 |
19:45:38.33 |
-16:16:00.1 |
HIP 97303 |
13.37 |