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) |
| 2026-06-01 00:00 |
02:26:48.73 |
+06:04:11.4 |
HIP 11411 |
10.09 |
| 2026-06-01 12:00 |
02:26:55.54 |
+06:04:55.5 |
HIP 11411 |
8.89 |
| 2026-06-02 00:00 |
02:27:02.31 |
+06:05:39.1 |
HIP 11411 |
7.95 |
| 2026-06-02 12:00 |
02:27:09.04 |
+06:06:22.4 |
HIP 11411 |
7.36 |
| 2026-06-03 00:00 |
02:27:15.73 |
+06:07:05.3 |
HIP 11411 |
7.19 |
| 2026-06-03 12:00 |
02:27:22.37 |
+06:07:47.8 |
HIP 11411 |
7.47 |
| 2026-06-04 00:00 |
02:27:28.96 |
+06:08:30.0 |
HIP 11411 |
8.14 |
| 2026-06-04 12:00 |
02:27:35.51 |
+06:09:11.7 |
HIP 11411 |
9.11 |
| 2026-06-05 00:00 |
02:27:42.01 |
+06:09:53.0 |
HIP 11411 |
10.28 |
| 2026-06-05 12:00 |
02:27:48.47 |
+06:10:33.9 |
HIP 11411 |
11.60 |
| 2026-06-06 00:00 |
02:27:54.87 |
+06:11:14.4 |
HIP 11411 |
13.00 |
| 2026-06-06 12:00 |
02:28:01.23 |
+06:11:54.5 |
HIP 11411 |
14.47 |
| 2026-06-07 00:00 |
02:28:07.55 |
+06:12:34.2 |
HIP 11411 |
15.97 |
| 2026-06-07 12:00 |
02:28:13.81 |
+06:13:13.5 |
HIP 11411 |
17.50 |
| 2026-06-08 00:00 |
02:28:20.02 |
+06:13:52.4 |
HIP 11411 |
19.04 |
| 2026-06-08 12:00 |
02:28:26.19 |
+06:14:30.9 |
HIP 11411 |
20.59 |
| 2026-06-09 00:00 |
02:28:32.30 |
+06:15:09.0 |
HIP 11411 |
22.14 |
| 2026-06-09 12:00 |
02:28:38.36 |
+06:15:46.7 |
HIP 11411 |
23.69 |
| 2026-06-10 00:00 |
02:28:44.37 |
+06:16:23.9 |
HIP 11411 |
25.24 |
| 2026-06-10 12:00 |
02:28:50.33 |
+06:17:00.7 |
HIP 11411 |
26.79 |
| 2026-06-11 00:00 |
02:28:56.23 |
+06:17:37.1 |
HIP 11411 |
28.32 |
| 2026-06-11 12:00 |
02:29:02.09 |
+06:18:13.1 |
HIP 11411 |
29.85 |
| 2026-06-12 00:00 |
02:29:07.88 |
+06:18:48.7 |
HIP 11563 |
30.13 |
| 2026-06-12 12:00 |
02:29:13.63 |
+06:19:23.9 |
HIP 11563 |
29.70 |
| 2026-06-13 00:00 |
02:29:19.32 |
+06:19:58.6 |
HIP 11563 |
29.35 |
| 2026-06-13 12:00 |
02:29:24.95 |
+06:20:32.9 |
HIP 11563 |
29.07 |
| 2026-06-14 00:00 |
02:29:30.53 |
+06:21:06.8 |
HIP 11563 |
28.88 |
| 2026-06-14 12:00 |
02:29:36.05 |
+06:21:40.2 |
HIP 11563 |
28.77 |
| 2026-06-15 00:00 |
02:29:41.51 |
+06:22:13.2 |
HIP 11563 |
28.73 |
| 2026-06-15 12:00 |
02:29:46.92 |
+06:22:45.8 |
HIP 11563 |
28.77 |
| 2026-06-16 00:00 |
02:29:52.26 |
+06:23:17.9 |
HIP 11563 |
28.88 |
| 2026-06-16 12:00 |
02:29:57.55 |
+06:23:49.7 |
HIP 11563 |
29.05 |
| 2026-06-17 00:00 |
02:30:02.78 |
+06:24:20.9 |
HIP 11563 |
29.30 |
| 2026-06-17 12:00 |
02:30:07.95 |
+06:24:51.8 |
HIP 11563 |
29.60 |
| 2026-06-18 00:00 |
02:30:13.06 |
+06:25:22.2 |
HIP 11563 |
29.96 |
| 2026-06-18 12:00 |
02:30:18.10 |
+06:25:52.2 |
HIP 11563 |
30.38 |
| 2026-06-19 00:00 |
02:30:23.09 |
+06:26:21.7 |
HIP 11563 |
30.84 |
| 2026-06-19 12:00 |
02:30:28.01 |
+06:26:50.8 |
HIP 11798 |
30.52 |
| 2026-06-20 00:00 |
02:30:32.87 |
+06:27:19.4 |
HIP 11798 |
29.24 |
| 2026-06-20 12:00 |
02:30:37.67 |
+06:27:47.6 |
HIP 11798 |
27.99 |
| 2026-06-21 00:00 |
02:30:42.41 |
+06:28:15.4 |
HIP 11798 |
26.75 |
| 2026-06-21 12:00 |
02:30:47.08 |
+06:28:42.7 |
HIP 11798 |
25.53 |
| 2026-06-22 00:00 |
02:30:51.69 |
+06:29:09.6 |
HIP 11798 |
24.33 |