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) |
| 2026-09-25 00:00 |
07:32:37.02 |
+06:29:35.8 |
HIP 36664 |
0.65 |
| 2026-09-25 12:00 |
07:32:38.78 |
+06:28:41.7 |
HIP 36664 |
1.25 |
| 2026-09-26 00:00 |
07:32:40.47 |
+06:27:47.6 |
HIP 36664 |
2.16 |
| 2026-09-26 12:00 |
07:32:42.08 |
+06:26:53.5 |
HIP 36664 |
3.11 |
| 2026-09-27 00:00 |
07:32:43.62 |
+06:25:59.5 |
HIP 36664 |
4.07 |
| 2026-09-27 12:00 |
07:32:45.09 |
+06:25:05.5 |
HIP 36664 |
5.02 |
| 2026-09-28 00:00 |
07:32:46.49 |
+06:24:11.5 |
HIP 36664 |
5.98 |
| 2026-09-28 12:00 |
07:32:47.82 |
+06:23:17.6 |
HIP 36664 |
6.92 |
| 2026-09-29 00:00 |
07:32:49.07 |
+06:22:23.7 |
HIP 36664 |
7.86 |
| 2026-09-29 12:00 |
07:32:50.25 |
+06:21:29.9 |
HIP 36664 |
8.79 |
| 2026-09-30 00:00 |
07:32:51.35 |
+06:20:36.1 |
HIP 36664 |
9.72 |
| 2026-09-30 12:00 |
07:32:52.38 |
+06:19:42.4 |
HIP 36664 |
10.64 |
| 2026-10-01 00:00 |
07:32:53.34 |
+06:18:48.7 |
HIP 36664 |
11.55 |
| 2026-10-01 12:00 |
07:32:54.22 |
+06:17:55.0 |
HIP 36664 |
12.46 |
| 2026-10-02 00:00 |
07:32:55.03 |
+06:17:01.4 |
HIP 36664 |
13.36 |
| 2026-10-02 12:00 |
07:32:55.77 |
+06:16:07.9 |
HIP 36664 |
14.26 |
| 2026-10-03 00:00 |
07:32:56.42 |
+06:15:14.5 |
HIP 36664 |
15.15 |
| 2026-10-03 12:00 |
07:32:57.01 |
+06:14:21.1 |
HIP 36664 |
16.03 |
| 2026-10-04 00:00 |
07:32:57.51 |
+06:13:27.7 |
HIP 36664 |
16.91 |
| 2026-10-04 12:00 |
07:32:57.94 |
+06:12:34.5 |
HIP 36664 |
17.78 |
| 2026-10-05 00:00 |
07:32:58.30 |
+06:11:41.3 |
HIP 36664 |
18.65 |
| 2026-10-05 12:00 |
07:32:58.58 |
+06:10:48.2 |
HIP 36664 |
19.51 |
| 2026-10-06 00:00 |
07:32:58.78 |
+06:09:55.1 |
HIP 36664 |
20.37 |
| 2026-10-06 12:00 |
07:32:58.90 |
+06:09:02.2 |
HIP 36664 |
21.23 |
| 2026-10-07 00:00 |
07:32:58.95 |
+06:08:09.3 |
HIP 36664 |
22.07 |
| 2026-10-07 12:00 |
07:32:58.91 |
+06:07:16.5 |
HIP 36664 |
22.92 |
| 2026-10-08 00:00 |
07:32:58.80 |
+06:06:23.9 |
HIP 36664 |
23.76 |
| 2026-10-08 12:00 |
07:32:58.62 |
+06:05:31.3 |
HIP 36664 |
24.60 |
| 2026-10-09 00:00 |
07:32:58.35 |
+06:04:38.8 |
HIP 36664 |
25.43 |
| 2026-10-09 12:00 |
07:32:58.00 |
+06:03:46.4 |
HIP 36664 |
26.26 |
| 2026-10-10 00:00 |
07:32:57.58 |
+06:02:54.1 |
HIP 36664 |
27.09 |
| 2026-10-10 12:00 |
07:32:57.08 |
+06:02:02.0 |
HIP 36664 |
27.92 |
| 2026-10-11 00:00 |
07:32:56.50 |
+06:01:09.9 |
HIP 36664 |
28.74 |
| 2026-10-11 12:00 |
07:32:55.83 |
+06:00:18.0 |
HIP 36664 |
29.56 |
| 2026-10-12 00:00 |
07:32:55.09 |
+05:59:26.1 |
HIP 36664 |
30.38 |
| 2026-10-12 12:00 |
07:32:54.27 |
+05:58:34.4 |
HIP 36664 |
31.19 |
| 2026-10-13 00:00 |
07:32:53.37 |
+05:57:42.9 |
HIP 36664 |
32.01 |
| 2026-10-13 12:00 |
07:32:52.39 |
+05:56:51.4 |
HIP 36664 |
32.83 |
| 2026-10-14 00:00 |
07:32:51.33 |
+05:56:00.1 |
HIP 36664 |
33.64 |
| 2026-10-14 12:00 |
07:32:50.19 |
+05:55:08.9 |
HIP 36505 |
33.52 |
| 2026-10-15 00:00 |
07:32:48.97 |
+05:54:17.9 |
HIP 36505 |
33.07 |
| 2026-10-15 12:00 |
07:32:47.67 |
+05:53:27.0 |
HIP 36505 |
32.62 |
| 2026-10-16 00:00 |
07:32:46.29 |
+05:52:36.2 |
HIP 36505 |
32.17 |