P/2024 K1 (PANSTARRS)
メタデータ
| 項目 |
値 |
| Designation |
P/2024 K1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-04-24T19:33:39.119040Z |
| Orbit solution date (soln_date, UTC) |
2025-01-14T17:42:19Z |
| Obs used |
36 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-05-30T10:02:35.894400Z |
| Discovery magnitude (MPC) |
20.79 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) |
2024-06-02.0000000 |
| e |
0.49069432 |
| q (au) |
3.482639 |
| a (au) |
6.838013 |
| i (deg) |
1.820532 |
| Ω (om, deg) |
251.623065 |
| ω (w, deg) |
349.434539 |
| M (ma, deg) |
2.104755 |
等級
散乱 + 全体線形
$$
M_a = (20.000 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
20.000 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.901 |
| k |
0.980 |
| δ90 |
9.998 |
| 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) |
| 2026-02-03 00:00 |
21:58:04.79 |
-10:47:45.2 |
HIP 108516 |
32.42 |
| 2026-02-03 12:00 |
21:58:31.27 |
-10:45:23.4 |
HIP 108582 |
32.26 |
| 2026-02-04 00:00 |
21:58:57.74 |
-10:43:01.4 |
HIP 108582 |
26.93 |
| 2026-02-04 12:00 |
21:59:24.21 |
-10:40:39.2 |
HIP 108582 |
22.49 |
| 2026-02-05 00:00 |
21:59:50.68 |
-10:38:16.7 |
HIP 108582 |
19.54 |
| 2026-02-05 12:00 |
22:00:17.14 |
-10:35:54.1 |
HIP 108582 |
18.80 |
| 2026-02-06 00:00 |
22:00:43.59 |
-10:33:31.2 |
HIP 108582 |
20.52 |
| 2026-02-06 12:00 |
22:01:10.04 |
-10:31:08.1 |
HIP 108582 |
24.18 |
| 2026-02-07 00:00 |
22:01:36.49 |
-10:28:44.8 |
HIP 108582 |
29.05 |
| 2026-02-07 12:00 |
22:02:02.92 |
-10:26:21.3 |
HIP 108757 |
34.01 |
| 2026-02-08 00:00 |
22:02:29.35 |
-10:23:57.6 |
HIP 108757 |
32.90 |
| 2026-02-08 12:00 |
22:02:55.78 |
-10:21:33.6 |
HIP 108757 |
33.23 |
| 2026-02-09 00:00 |
22:03:22.19 |
-10:19:09.5 |
HIP 108757 |
34.95 |
| 2026-02-09 12:00 |
22:03:48.59 |
-10:16:45.2 |
HIP 109058 |
34.83 |
| 2026-02-10 00:00 |
22:04:14.99 |
-10:14:20.7 |
HIP 109058 |
28.46 |
| 2026-02-10 12:00 |
22:04:41.37 |
-10:11:56.1 |
HIP 109058 |
22.42 |
| 2026-02-11 00:00 |
22:05:07.74 |
-10:09:31.2 |
HIP 109058 |
17.07 |
| 2026-02-11 12:00 |
22:05:34.11 |
-10:07:06.2 |
HIP 109058 |
13.27 |
| 2026-02-12 00:00 |
22:06:00.46 |
-10:04:41.0 |
HIP 109058 |
12.51 |
| 2026-02-12 12:00 |
22:06:26.79 |
-10:02:15.6 |
HIP 109058 |
15.26 |
| 2026-02-13 00:00 |
22:06:53.12 |
-09:59:50.0 |
HIP 109236 |
14.00 |
| 2026-02-13 12:00 |
22:07:19.42 |
-09:57:24.4 |
HIP 109236 |
9.88 |
| 2026-02-14 00:00 |
22:07:45.72 |
-09:54:58.5 |
HIP 109236 |
9.74 |
| 2026-02-14 12:00 |
22:08:12.00 |
-09:52:32.5 |
HIP 109236 |
13.70 |
| 2026-02-15 00:00 |
22:08:38.26 |
-09:50:06.4 |
HIP 109236 |
19.40 |
| 2026-02-15 12:00 |
22:09:04.51 |
-09:47:40.1 |
HIP 109236 |
25.69 |
| 2026-02-16 00:00 |
22:09:30.74 |
-09:45:13.7 |
HIP 109446 |
25.33 |
| 2026-02-16 12:00 |
22:09:56.95 |
-09:42:47.1 |
HIP 109446 |
20.47 |
| 2026-02-17 00:00 |
22:10:23.14 |
-09:40:20.4 |
HIP 109446 |
17.08 |
| 2026-02-17 12:00 |
22:10:49.31 |
-09:37:53.6 |
HIP 109446 |
16.11 |
| 2026-02-18 00:00 |
22:11:15.47 |
-09:35:26.7 |
HIP 109574 |
12.60 |
| 2026-02-18 12:00 |
22:11:41.60 |
-09:32:59.7 |
HIP 109574 |
11.91 |
| 2026-02-19 00:00 |
22:12:07.71 |
-09:30:32.5 |
HIP 109574 |
14.83 |
| 2026-02-19 12:00 |
22:12:33.80 |
-09:28:05.3 |
HIP 109574 |
19.82 |
| 2026-02-20 00:00 |
22:12:59.87 |
-09:25:37.9 |
HIP 109574 |
25.70 |
| 2026-02-20 12:00 |
22:13:25.91 |
-09:23:10.5 |
HIP 109574 |
31.97 |
| 2026-02-21 00:00 |
22:13:51.93 |
-09:20:43.0 |
HIP 109801 |
36.96 |
| 2026-02-21 12:00 |
22:14:17.92 |
-09:18:15.4 |
HIP 109801 |
33.67 |
| 2026-02-22 00:00 |
22:14:43.89 |
-09:15:47.7 |
HIP 109801 |
31.56 |
| 2026-02-22 12:00 |
22:15:09.83 |
-09:13:20.0 |
HIP 110009 |
27.62 |
| 2026-02-23 00:00 |
22:15:35.75 |
-09:10:52.1 |
HIP 110009 |
20.77 |
| 2026-02-23 12:00 |
22:16:01.64 |
-09:08:24.2 |
HIP 110009 |
13.94 |
| 2026-02-24 00:00 |
22:16:27.50 |
-09:05:56.3 |
HIP 110009 |
7.13 |