メタデータ
| 項目 |
値 |
| Designation |
P/2023 M1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-12-14T10:50:57.154560Z |
| Orbit solution date (soln_date, UTC) |
2023-06-30T22:18:01Z |
| Obs used |
37 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
22.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-06-16T09:48:14.918400Z |
| Discovery magnitude (MPC) |
20.42 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) |
2023-06-04.0000000 |
| e |
0.58789811 |
| q (au) |
2.825892 |
| a (au) |
6.857265 |
| i (deg) |
12.289932 |
| Ω (om, deg) |
216.866513 |
| ω (w, deg) |
79.702108 |
| M (ma, deg) |
349.381798 |
等級
散乱 + 全体線形
$$
M_a = (14.340 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.340 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.741 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
02:59:00.67 |
+13:49:28.4 |
HIP 13878 |
13.69 |
| 2026-03-26 12:00 |
02:59:20.00 |
+13:50:40.6 |
HIP 13878 |
16.65 |
| 2026-03-27 00:00 |
02:59:39.39 |
+13:51:52.8 |
HIP 13878 |
20.35 |
| 2026-03-27 12:00 |
02:59:58.84 |
+13:53:05.0 |
HIP 13878 |
24.47 |
| 2026-03-28 00:00 |
03:00:18.35 |
+13:54:17.4 |
HIP 13878 |
28.84 |
| 2026-03-28 12:00 |
03:00:37.91 |
+13:55:29.8 |
HIP 13878 |
33.36 |
| 2026-03-29 00:00 |
03:00:57.53 |
+13:56:42.2 |
HIP 13878 |
37.99 |
| 2026-03-29 12:00 |
03:01:17.21 |
+13:57:54.7 |
HIP 13878 |
42.70 |
| 2026-03-30 00:00 |
03:01:36.93 |
+13:59:07.2 |
HIP 14236 |
40.55 |
| 2026-03-30 12:00 |
03:01:56.71 |
+14:00:19.8 |
HIP 14236 |
36.44 |
| 2026-03-31 00:00 |
03:02:16.55 |
+14:01:32.4 |
HIP 14236 |
32.55 |
| 2026-03-31 12:00 |
03:02:36.43 |
+14:02:45.0 |
HIP 14236 |
28.99 |
| 2026-04-01 00:00 |
03:02:56.37 |
+14:03:57.7 |
HIP 14236 |
25.88 |
| 2026-04-01 12:00 |
03:03:16.36 |
+14:05:10.4 |
HIP 14236 |
23.44 |
| 2026-04-02 00:00 |
03:03:36.39 |
+14:06:23.1 |
HIP 14236 |
21.88 |
| 2026-04-02 12:00 |
03:03:56.48 |
+14:07:35.8 |
HIP 14236 |
21.40 |
| 2026-04-03 00:00 |
03:04:16.62 |
+14:08:48.5 |
HIP 14236 |
22.09 |
| 2026-04-03 12:00 |
03:04:36.80 |
+14:10:01.2 |
HIP 14404 |
18.22 |
| 2026-04-04 00:00 |
03:04:57.03 |
+14:11:14.0 |
HIP 14404 |
13.20 |
| 2026-04-04 12:00 |
03:05:17.31 |
+14:12:26.7 |
HIP 14404 |
8.21 |
| 2026-04-05 00:00 |
03:05:37.63 |
+14:13:39.4 |
HIP 14404 |
3.43 |
| 2026-04-05 12:00 |
03:05:58.00 |
+14:14:52.1 |
HIP 14404 |
2.76 |
| 2026-04-06 00:00 |
03:06:18.41 |
+14:16:04.8 |
HIP 14404 |
7.44 |
| 2026-04-06 12:00 |
03:06:38.87 |
+14:17:17.4 |
HIP 14404 |
12.45 |
| 2026-04-07 00:00 |
03:06:59.38 |
+14:18:30.1 |
HIP 14404 |
17.53 |
| 2026-04-07 12:00 |
03:07:19.92 |
+14:19:42.7 |
HIP 14404 |
22.63 |
| 2026-04-08 00:00 |
03:07:40.51 |
+14:20:55.3 |
HIP 14404 |
27.75 |
| 2026-04-08 12:00 |
03:08:01.14 |
+14:22:07.8 |
HIP 14404 |
32.88 |
| 2026-04-09 00:00 |
03:08:21.81 |
+14:23:20.3 |
HIP 14404 |
38.03 |
| 2026-04-09 12:00 |
03:08:42.52 |
+14:24:32.8 |
HIP 14694 |
41.88 |
| 2026-04-10 00:00 |
03:09:03.27 |
+14:25:45.2 |
HIP 14694 |
41.32 |
| 2026-04-10 12:00 |
03:09:24.07 |
+14:26:57.6 |
HIP 14694 |
41.40 |
| 2026-04-11 00:00 |
03:09:44.90 |
+14:28:09.9 |
HIP 14694 |
42.12 |
| 2026-04-11 12:00 |
03:10:05.76 |
+14:29:22.1 |
HIP 14897 |
41.38 |
| 2026-04-12 00:00 |
03:10:26.67 |
+14:30:34.3 |
HIP 14897 |
38.55 |
| 2026-04-12 12:00 |
03:10:47.61 |
+14:31:46.4 |
HIP 14897 |
36.26 |
| 2026-04-13 00:00 |
03:11:08.59 |
+14:32:58.4 |
HIP 14897 |
34.59 |
| 2026-04-13 12:00 |
03:11:29.61 |
+14:34:10.4 |
HIP 14909 |
31.37 |
| 2026-04-14 00:00 |
03:11:50.65 |
+14:35:22.3 |
HIP 14909 |
28.42 |
| 2026-04-14 12:00 |
03:12:11.74 |
+14:36:34.1 |
HIP 14909 |
26.19 |
| 2026-04-15 00:00 |
03:12:32.85 |
+14:37:45.8 |
HIP 14909 |
24.87 |
| 2026-04-15 12:00 |
03:12:54.00 |
+14:38:57.4 |
HIP 14909 |
24.63 |
| 2026-04-16 00:00 |
03:13:15.19 |
+14:40:08.9 |
HIP 14909 |
25.50 |