メタデータ
| 項目 |
値 |
| Designation |
C/2022 L1 (Catalina) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2022-09-28T05:52:28.940160Z |
| Orbit solution date (soln_date, UTC) |
2023-02-13T23:13:35Z |
| Obs used |
415 |
| NEO |
- |
| M1 |
13.100 |
| K1 |
16.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2022-06-04T10:13:35.904000Z |
| Discovery magnitude (MPC) |
19.30 G |
| Discovery observatory (MPC) |
703 · University of Arizona Catalina Sky Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2022-08-30.0000000 |
| e |
0.99710505 |
| q (au) |
1.591537 |
| a (au) |
549.763100 |
| i (deg) |
123.469284 |
| Ω (om, deg) |
300.024952 |
| ω (w, deg) |
59.851285 |
| M (ma, deg) |
359.997764 |
等級
散乱 + 全体線形
$$
M_a = (13.376 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.376 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.588 |
| k |
0.955 |
| 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) |
| 2026-06-01 00:00 |
07:08:00.79 |
+08:57:32.9 |
HIP 34419 |
21.16 |
| 2026-06-01 12:00 |
07:08:07.49 |
+08:57:22.6 |
HIP 34419 |
20.91 |
| 2026-06-02 00:00 |
07:08:14.22 |
+08:57:12.0 |
HIP 34419 |
20.77 |
| 2026-06-02 12:00 |
07:08:21.00 |
+08:57:01.1 |
HIP 34419 |
20.77 |
| 2026-06-03 00:00 |
07:08:27.80 |
+08:56:50.0 |
HIP 34419 |
20.91 |
| 2026-06-03 12:00 |
07:08:34.64 |
+08:56:38.5 |
HIP 34419 |
21.17 |
| 2026-06-04 00:00 |
07:08:41.52 |
+08:56:26.8 |
HIP 34419 |
21.56 |
| 2026-06-04 12:00 |
07:08:48.43 |
+08:56:14.7 |
HIP 34419 |
22.08 |
| 2026-06-05 00:00 |
07:08:55.37 |
+08:56:02.4 |
HIP 34419 |
22.72 |
| 2026-06-05 12:00 |
07:09:02.34 |
+08:55:49.8 |
HIP 34419 |
23.47 |
| 2026-06-06 00:00 |
07:09:09.35 |
+08:55:36.8 |
HIP 34652 |
23.33 |
| 2026-06-06 12:00 |
07:09:16.38 |
+08:55:23.6 |
HIP 34652 |
21.63 |
| 2026-06-07 00:00 |
07:09:23.45 |
+08:55:10.1 |
HIP 34652 |
19.94 |
| 2026-06-07 12:00 |
07:09:30.55 |
+08:54:56.3 |
HIP 34652 |
18.25 |
| 2026-06-08 00:00 |
07:09:37.68 |
+08:54:42.2 |
HIP 34652 |
16.57 |
| 2026-06-08 12:00 |
07:09:44.84 |
+08:54:27.8 |
HIP 34652 |
14.90 |
| 2026-06-09 00:00 |
07:09:52.02 |
+08:54:13.2 |
HIP 34652 |
13.25 |
| 2026-06-09 12:00 |
07:09:59.24 |
+08:53:58.2 |
HIP 34652 |
11.64 |
| 2026-06-10 00:00 |
07:10:06.48 |
+08:53:42.9 |
HIP 34652 |
10.08 |
| 2026-06-10 12:00 |
07:10:13.75 |
+08:53:27.4 |
HIP 34652 |
8.61 |
| 2026-06-11 00:00 |
07:10:21.05 |
+08:53:11.5 |
HIP 34652 |
7.29 |
| 2026-06-11 12:00 |
07:10:28.38 |
+08:52:55.4 |
HIP 34652 |
6.23 |
| 2026-06-12 00:00 |
07:10:35.73 |
+08:52:39.0 |
HIP 34652 |
5.56 |
| 2026-06-12 12:00 |
07:10:43.10 |
+08:52:22.2 |
HIP 34652 |
5.47 |
| 2026-06-13 00:00 |
07:10:50.50 |
+08:52:05.2 |
HIP 34652 |
5.97 |
| 2026-06-13 12:00 |
07:10:57.93 |
+08:51:47.9 |
HIP 34652 |
6.94 |
| 2026-06-14 00:00 |
07:11:05.37 |
+08:51:30.3 |
HIP 34652 |
8.23 |
| 2026-06-14 12:00 |
07:11:12.85 |
+08:51:12.4 |
HIP 34652 |
9.70 |
| 2026-06-15 00:00 |
07:11:20.34 |
+08:50:54.2 |
HIP 34652 |
11.30 |
| 2026-06-15 12:00 |
07:11:27.86 |
+08:50:35.7 |
HIP 34652 |
12.98 |
| 2026-06-16 00:00 |
07:11:35.39 |
+08:50:16.9 |
HIP 34652 |
14.71 |
| 2026-06-16 12:00 |
07:11:42.95 |
+08:49:57.8 |
HIP 34652 |
16.48 |
| 2026-06-17 00:00 |
07:11:50.53 |
+08:49:38.5 |
HIP 34652 |
18.28 |
| 2026-06-17 12:00 |
07:11:58.13 |
+08:49:18.8 |
HIP 34652 |
20.10 |
| 2026-06-18 00:00 |
07:12:05.75 |
+08:48:58.9 |
HIP 34652 |
21.94 |
| 2026-06-18 12:00 |
07:12:13.38 |
+08:48:38.6 |
HIP 34903 |
22.02 |
| 2026-06-19 00:00 |
07:12:21.03 |
+08:48:18.1 |
HIP 34903 |
20.44 |
| 2026-06-19 12:00 |
07:12:28.71 |
+08:47:57.3 |
HIP 34903 |
18.93 |
| 2026-06-20 00:00 |
07:12:36.39 |
+08:47:36.2 |
HIP 34903 |
17.49 |
| 2026-06-20 12:00 |
07:12:44.10 |
+08:47:14.8 |
HIP 34903 |
16.14 |
| 2026-06-21 00:00 |
07:12:51.82 |
+08:46:53.1 |
HIP 34903 |
14.92 |
| 2026-06-21 12:00 |
07:12:59.55 |
+08:46:31.2 |
HIP 34903 |
13.86 |
| 2026-06-22 00:00 |
07:13:07.30 |
+08:46:08.9 |
HIP 34903 |
13.00 |