メタデータ
| 項目 |
値 |
| Designation |
C/2023 F1 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2023-06-28T08:27:36.241920Z |
| Orbit solution date (soln_date, UTC) |
2023-06-30T22:17:46Z |
| Obs used |
201 |
| NEO |
- |
| M1 |
10.100 |
| K1 |
30.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-03-27T14:17:59.280000Z |
| Discovery magnitude (MPC) |
20.87 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-04-17.0000000 |
| e |
0.99353044 |
| q (au) |
1.708139 |
| a (au) |
264.027202 |
| i (deg) |
131.752405 |
| Ω (om, deg) |
25.247504 |
| ω (w, deg) |
216.654855 |
| M (ma, deg) |
359.983378 |
等級
散乱 + 全体線形
$$
M_a = (14.537 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.537 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.803 |
| k |
0.996 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
02:33:05.33 |
+06:41:07.2 |
HIP 11798 |
13.34 |
| 2026-07-29 12:00 |
02:33:03.98 |
+06:40:59.4 |
HIP 11798 |
13.03 |
| 2026-07-30 00:00 |
02:33:02.53 |
+06:40:51.2 |
HIP 11798 |
12.69 |
| 2026-07-30 12:00 |
02:33:01.00 |
+06:40:42.5 |
HIP 11798 |
12.35 |
| 2026-07-31 00:00 |
02:32:59.37 |
+06:40:33.3 |
HIP 11798 |
11.98 |
| 2026-07-31 12:00 |
02:32:57.66 |
+06:40:23.7 |
HIP 11798 |
11.60 |
| 2026-08-01 00:00 |
02:32:55.85 |
+06:40:13.6 |
HIP 11798 |
11.20 |
| 2026-08-01 12:00 |
02:32:53.94 |
+06:40:03.1 |
HIP 11798 |
10.79 |
| 2026-08-02 00:00 |
02:32:51.95 |
+06:39:52.1 |
HIP 11798 |
10.37 |
| 2026-08-02 12:00 |
02:32:49.86 |
+06:39:40.7 |
HIP 11798 |
9.94 |
| 2026-08-03 00:00 |
02:32:47.68 |
+06:39:28.8 |
HIP 11798 |
9.51 |
| 2026-08-03 12:00 |
02:32:45.41 |
+06:39:16.4 |
HIP 11798 |
9.07 |
| 2026-08-04 00:00 |
02:32:43.04 |
+06:39:03.6 |
HIP 11798 |
8.64 |
| 2026-08-04 12:00 |
02:32:40.58 |
+06:38:50.4 |
HIP 11798 |
8.21 |
| 2026-08-05 00:00 |
02:32:38.03 |
+06:38:36.6 |
HIP 11798 |
7.80 |
| 2026-08-05 12:00 |
02:32:35.38 |
+06:38:22.5 |
HIP 11798 |
7.41 |
| 2026-08-06 00:00 |
02:32:32.64 |
+06:38:07.8 |
HIP 11798 |
7.07 |
| 2026-08-06 12:00 |
02:32:29.80 |
+06:37:52.8 |
HIP 11798 |
6.77 |
| 2026-08-07 00:00 |
02:32:26.87 |
+06:37:37.2 |
HIP 11798 |
6.53 |
| 2026-08-07 12:00 |
02:32:23.85 |
+06:37:21.3 |
HIP 11798 |
6.38 |
| 2026-08-08 00:00 |
02:32:20.73 |
+06:37:04.8 |
HIP 11798 |
6.33 |
| 2026-08-08 12:00 |
02:32:17.52 |
+06:36:48.0 |
HIP 11798 |
6.38 |
| 2026-08-09 00:00 |
02:32:14.21 |
+06:36:30.6 |
HIP 11798 |
6.55 |
| 2026-08-09 12:00 |
02:32:10.81 |
+06:36:12.9 |
HIP 11798 |
6.83 |
| 2026-08-10 00:00 |
02:32:07.31 |
+06:35:54.7 |
HIP 11798 |
7.23 |
| 2026-08-10 12:00 |
02:32:03.71 |
+06:35:36.0 |
HIP 11798 |
7.73 |
| 2026-08-11 00:00 |
02:32:00.02 |
+06:35:16.9 |
HIP 11798 |
8.32 |
| 2026-08-11 12:00 |
02:31:56.24 |
+06:34:57.4 |
HIP 11798 |
9.00 |
| 2026-08-12 00:00 |
02:31:52.36 |
+06:34:37.4 |
HIP 11798 |
9.75 |
| 2026-08-12 12:00 |
02:31:48.38 |
+06:34:17.0 |
HIP 11798 |
10.56 |
| 2026-08-13 00:00 |
02:31:44.31 |
+06:33:56.1 |
HIP 11798 |
11.44 |
| 2026-08-13 12:00 |
02:31:40.15 |
+06:33:34.8 |
HIP 11798 |
12.36 |
| 2026-08-14 00:00 |
02:31:35.89 |
+06:33:13.1 |
HIP 11798 |
13.33 |
| 2026-08-14 12:00 |
02:31:31.53 |
+06:32:51.0 |
HIP 11798 |
14.34 |
| 2026-08-15 00:00 |
02:31:27.08 |
+06:32:28.4 |
HIP 11798 |
15.40 |
| 2026-08-15 12:00 |
02:31:22.53 |
+06:32:05.4 |
HIP 11798 |
16.49 |
| 2026-08-16 00:00 |
02:31:17.89 |
+06:31:42.0 |
HIP 11798 |
17.62 |
| 2026-08-16 12:00 |
02:31:13.15 |
+06:31:18.2 |
HIP 11798 |
18.78 |
| 2026-08-17 00:00 |
02:31:08.32 |
+06:30:53.9 |
HIP 11798 |
19.97 |
| 2026-08-17 12:00 |
02:31:03.39 |
+06:30:29.2 |
HIP 11798 |
21.20 |
| 2026-08-18 00:00 |
02:30:58.37 |
+06:30:04.1 |
HIP 11798 |
22.45 |
| 2026-08-18 12:00 |
02:30:53.25 |
+06:29:38.6 |
HIP 11798 |
23.74 |
| 2026-08-19 00:00 |
02:30:48.04 |
+06:29:12.7 |
HIP 11798 |
25.05 |