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) |
| 2026-09-20 00:00 |
02:22:10.19 |
+05:49:29.2 |
HIP 10957 |
17.45 |
| 2026-09-20 12:00 |
02:21:59.51 |
+05:48:43.1 |
HIP 10957 |
14.75 |
| 2026-09-21 00:00 |
02:21:48.78 |
+05:47:56.8 |
HIP 10957 |
12.06 |
| 2026-09-21 12:00 |
02:21:37.97 |
+05:47:10.4 |
HIP 10957 |
9.41 |
| 2026-09-22 00:00 |
02:21:27.11 |
+05:46:23.8 |
HIP 10957 |
6.87 |
| 2026-09-22 12:00 |
02:21:16.18 |
+05:45:37.0 |
HIP 10957 |
4.63 |
| 2026-09-23 00:00 |
02:21:05.18 |
+05:44:50.1 |
HIP 10957 |
3.42 |
| 2026-09-23 12:00 |
02:20:54.13 |
+05:44:03.0 |
HIP 10957 |
4.27 |
| 2026-09-24 00:00 |
02:20:43.01 |
+05:43:15.7 |
HIP 10957 |
6.43 |
| 2026-09-24 12:00 |
02:20:31.84 |
+05:42:28.4 |
HIP 10957 |
9.01 |
| 2026-09-25 00:00 |
02:20:20.60 |
+05:41:40.9 |
HIP 10957 |
11.75 |
| 2026-09-25 12:00 |
02:20:09.31 |
+05:40:53.2 |
HIP 10957 |
14.57 |
| 2026-09-26 00:00 |
02:19:57.96 |
+05:40:05.4 |
HIP 10957 |
17.44 |
| 2026-09-26 12:00 |
02:19:46.55 |
+05:39:17.5 |
HIP 10957 |
20.34 |
| 2026-09-27 00:00 |
02:19:35.09 |
+05:38:29.5 |
HIP 10957 |
23.27 |
| 2026-09-27 12:00 |
02:19:23.57 |
+05:37:41.4 |
HIP 10957 |
26.21 |
| 2026-09-28 00:00 |
02:19:12.00 |
+05:36:53.1 |
HIP 10678 |
27.72 |
| 2026-09-28 12:00 |
02:19:00.38 |
+05:36:04.8 |
HIP 10678 |
24.72 |
| 2026-09-29 00:00 |
02:18:48.70 |
+05:35:16.3 |
HIP 10678 |
21.72 |
| 2026-09-29 12:00 |
02:18:36.97 |
+05:34:27.8 |
HIP 10678 |
18.70 |
| 2026-09-30 00:00 |
02:18:25.19 |
+05:33:39.2 |
HIP 10678 |
15.68 |
| 2026-09-30 12:00 |
02:18:13.36 |
+05:32:50.5 |
HIP 10678 |
12.65 |
| 2026-10-01 00:00 |
02:18:01.48 |
+05:32:01.7 |
HIP 10678 |
9.62 |
| 2026-10-01 12:00 |
02:17:49.55 |
+05:31:12.8 |
HIP 10678 |
6.61 |
| 2026-10-02 00:00 |
02:17:37.58 |
+05:30:23.9 |
HIP 10678 |
3.71 |
| 2026-10-02 12:00 |
02:17:25.56 |
+05:29:34.9 |
HIP 10678 |
1.72 |
| 2026-10-03 00:00 |
02:17:13.49 |
+05:28:45.8 |
HIP 10678 |
3.38 |
| 2026-10-03 12:00 |
02:17:01.38 |
+05:27:56.7 |
HIP 10678 |
6.27 |
| 2026-10-04 00:00 |
02:16:49.23 |
+05:27:07.6 |
HIP 10678 |
9.33 |
| 2026-10-04 12:00 |
02:16:37.03 |
+05:26:18.4 |
HIP 10672 |
11.59 |
| 2026-10-05 00:00 |
02:16:24.80 |
+05:25:29.1 |
HIP 10672 |
14.19 |
| 2026-10-05 12:00 |
02:16:12.52 |
+05:24:39.9 |
HIP 10672 |
16.99 |
| 2026-10-06 00:00 |
02:16:00.20 |
+05:23:50.6 |
HIP 10672 |
19.90 |
| 2026-10-06 12:00 |
02:15:47.84 |
+05:23:01.3 |
HIP 10672 |
22.90 |
| 2026-10-07 00:00 |
02:15:35.45 |
+05:22:12.0 |
HIP 10672 |
25.95 |
| 2026-10-07 12:00 |
02:15:23.02 |
+05:21:22.7 |
HIP 10672 |
29.04 |
| 2026-10-08 00:00 |
02:15:10.55 |
+05:20:33.3 |
HIP 10333 |
30.19 |
| 2026-10-08 12:00 |
02:14:58.05 |
+05:19:44.0 |
HIP 10333 |
27.15 |
| 2026-10-09 00:00 |
02:14:45.52 |
+05:18:54.7 |
HIP 10333 |
24.15 |
| 2026-10-09 12:00 |
02:14:32.96 |
+05:18:05.5 |
HIP 10333 |
21.21 |
| 2026-10-10 00:00 |
02:14:20.36 |
+05:17:16.2 |
HIP 10333 |
18.36 |
| 2026-10-10 12:00 |
02:14:07.73 |
+05:16:27.0 |
HIP 10333 |
15.66 |
| 2026-10-11 00:00 |
02:13:55.08 |
+05:15:37.8 |
HIP 10333 |
13.20 |