メタデータ
| 項目 |
値 |
| Designation |
432P/PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2021-08-31T00:49:17.221440Z |
| Orbit solution date (soln_date, UTC) |
2021-11-20T19:13:23Z |
| Obs used |
68 |
| NEO |
- |
| M1 |
18.400 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2016-10-25T11:18:06.278400Z |
| Discovery magnitude (MPC) |
20.95 T |
| 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) |
2020-12-28.0000000 |
| e |
0.24254187 |
| q (au) |
2.300216 |
| a (au) |
3.036757 |
| i (deg) |
10.070047 |
| Ω (om, deg) |
239.214363 |
| ω (w, deg) |
105.379770 |
| M (ma, deg) |
314.176883 |
等級
散乱 + 全体線形
$$
M_a = (18.527 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.527 |
| n |
2.000 |
| gf |
0.897 |
| gb |
-0.836 |
| k |
0.992 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
19:38:31.45 |
-07:42:50.4 |
HIP 96754 |
28.18 |
| 2026-09-20 12:00 |
19:38:45.24 |
-07:44:15.9 |
HIP 96754 |
24.57 |
| 2026-09-21 00:00 |
19:38:59.44 |
-07:45:40.5 |
HIP 96754 |
20.92 |
| 2026-09-21 12:00 |
19:39:14.05 |
-07:47:04.2 |
HIP 96754 |
17.26 |
| 2026-09-22 00:00 |
19:39:29.07 |
-07:48:27.0 |
HIP 96754 |
13.67 |
| 2026-09-22 12:00 |
19:39:44.49 |
-07:49:49.0 |
HIP 96754 |
10.33 |
| 2026-09-23 00:00 |
19:40:00.31 |
-07:51:10.0 |
HIP 96754 |
7.69 |
| 2026-09-23 12:00 |
19:40:16.54 |
-07:52:30.1 |
HIP 96754 |
6.84 |
| 2026-09-24 00:00 |
19:40:33.16 |
-07:53:49.2 |
HIP 96754 |
8.48 |
| 2026-09-24 12:00 |
19:40:50.18 |
-07:55:07.4 |
HIP 96754 |
11.68 |
| 2026-09-25 00:00 |
19:41:07.59 |
-07:56:24.6 |
HIP 96754 |
15.59 |
| 2026-09-25 12:00 |
19:41:25.40 |
-07:57:40.8 |
HIP 96754 |
19.85 |
| 2026-09-26 00:00 |
19:41:43.59 |
-07:58:56.0 |
HIP 96754 |
24.33 |
| 2026-09-26 12:00 |
19:42:02.18 |
-08:00:10.2 |
HIP 97016 |
23.71 |
| 2026-09-27 00:00 |
19:42:21.14 |
-08:01:23.3 |
HIP 97016 |
19.98 |
| 2026-09-27 12:00 |
19:42:40.49 |
-08:02:35.4 |
HIP 97016 |
16.82 |
| 2026-09-28 00:00 |
19:43:00.22 |
-08:03:46.4 |
HIP 97016 |
14.68 |
| 2026-09-28 12:00 |
19:43:20.33 |
-08:04:56.4 |
HIP 97016 |
14.14 |
| 2026-09-29 00:00 |
19:43:40.81 |
-08:06:05.2 |
HIP 97016 |
15.45 |
| 2026-09-29 12:00 |
19:44:01.67 |
-08:07:12.9 |
HIP 97016 |
18.30 |
| 2026-09-30 00:00 |
19:44:22.89 |
-08:08:19.5 |
HIP 97022 |
22.01 |
| 2026-09-30 12:00 |
19:44:44.49 |
-08:09:25.0 |
HIP 97022 |
26.27 |
| 2026-10-01 00:00 |
19:45:06.46 |
-08:10:29.3 |
HIP 97173 |
27.68 |
| 2026-10-01 12:00 |
19:45:28.79 |
-08:11:32.4 |
HIP 97350 |
24.68 |
| 2026-10-02 00:00 |
19:45:51.48 |
-08:12:34.4 |
HIP 97350 |
19.25 |
| 2026-10-02 12:00 |
19:46:14.54 |
-08:13:35.1 |
HIP 97350 |
13.96 |
| 2026-10-03 00:00 |
19:46:37.95 |
-08:14:34.7 |
HIP 97350 |
9.21 |
| 2026-10-03 12:00 |
19:47:01.72 |
-08:15:33.0 |
HIP 97350 |
6.57 |
| 2026-10-04 00:00 |
19:47:25.85 |
-08:16:30.1 |
HIP 97350 |
8.56 |
| 2026-10-04 12:00 |
19:47:50.33 |
-08:17:25.9 |
HIP 97350 |
13.34 |
| 2026-10-05 00:00 |
19:48:15.16 |
-08:18:20.5 |
HIP 97488 |
18.43 |
| 2026-10-05 12:00 |
19:48:40.34 |
-08:19:13.8 |
HIP 97488 |
17.13 |
| 2026-10-06 00:00 |
19:49:05.87 |
-08:20:05.8 |
HIP 97488 |
18.06 |
| 2026-10-06 12:00 |
19:49:31.75 |
-08:20:56.4 |
HIP 97600 |
18.62 |
| 2026-10-07 00:00 |
19:49:57.97 |
-08:21:45.8 |
HIP 97600 |
14.98 |
| 2026-10-07 12:00 |
19:50:24.52 |
-08:22:33.8 |
HIP 97600 |
13.72 |
| 2026-10-08 00:00 |
19:50:51.42 |
-08:23:20.5 |
HIP 97600 |
15.55 |
| 2026-10-08 12:00 |
19:51:18.66 |
-08:24:05.8 |
HIP 97600 |
19.70 |
| 2026-10-09 00:00 |
19:51:46.23 |
-08:24:49.7 |
HIP 97600 |
25.11 |
| 2026-10-09 12:00 |
19:52:14.13 |
-08:25:32.2 |
HIP 97928 |
29.60 |
| 2026-10-10 00:00 |
19:52:42.36 |
-08:26:13.4 |
HIP 97928 |
22.78 |
| 2026-10-10 12:00 |
19:53:10.92 |
-08:26:53.1 |
HIP 97928 |
16.07 |
| 2026-10-11 00:00 |
19:53:39.81 |
-08:27:31.4 |
HIP 97928 |
9.88 |