メタデータ
| 項目 |
値 |
| Designation |
C/2024 Q3 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2025-03-05T05:25:00.739200Z |
| Orbit solution date (soln_date, UTC) |
2025-06-26T10:13:08Z |
| Obs used |
78 |
| NEO |
- |
| M1 |
15.800 |
| K1 |
7.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-08-27T09:52:56.323200Z |
| Discovery magnitude (MPC) |
21.06 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2024-10-14.0000000 |
| e |
1.00151399 |
| q (au) |
2.091551 |
| a (au) |
-1381.479710 |
| i (deg) |
121.375983 |
| Ω (om, deg) |
337.283849 |
| ω (w, deg) |
70.127632 |
| M (ma, deg) |
-0.002730 |
等級
散乱 + 全体線形
$$
M_a = (13.376 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.376 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.685 |
| k |
0.950 |
| 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) |
| 2026-05-12 00:00 |
10:26:25.32 |
+19:39:28.2 |
HIP 51147 |
11.06 |
| 2026-05-12 12:00 |
10:26:13.30 |
+19:37:11.4 |
HIP 51147 |
11.59 |
| 2026-05-13 00:00 |
10:26:01.55 |
+19:34:54.1 |
HIP 51067 |
10.83 |
| 2026-05-13 12:00 |
10:25:50.06 |
+19:32:36.3 |
HIP 51067 |
9.13 |
| 2026-05-14 00:00 |
10:25:38.84 |
+19:30:17.9 |
HIP 51067 |
8.59 |
| 2026-05-14 12:00 |
10:25:27.89 |
+19:27:59.0 |
HIP 51067 |
9.37 |
| 2026-05-15 00:00 |
10:25:17.19 |
+19:25:39.7 |
HIP 51067 |
11.16 |
| 2026-05-15 12:00 |
10:25:06.76 |
+19:23:19.8 |
HIP 51067 |
13.53 |
| 2026-05-16 00:00 |
10:24:56.58 |
+19:20:59.5 |
HIP 51067 |
16.21 |
| 2026-05-16 12:00 |
10:24:46.67 |
+19:18:38.7 |
HIP 51067 |
19.04 |
| 2026-05-17 00:00 |
10:24:37.00 |
+19:16:17.5 |
HIP 51067 |
21.96 |
| 2026-05-17 12:00 |
10:24:27.59 |
+19:13:55.8 |
HIP 50848 |
21.73 |
| 2026-05-18 00:00 |
10:24:18.43 |
+19:11:33.6 |
HIP 50848 |
19.06 |
| 2026-05-18 12:00 |
10:24:09.52 |
+19:09:11.0 |
HIP 50848 |
16.65 |
| 2026-05-19 00:00 |
10:24:00.86 |
+19:06:48.1 |
HIP 50848 |
14.59 |
| 2026-05-19 12:00 |
10:23:52.44 |
+19:04:24.7 |
HIP 50848 |
13.03 |
| 2026-05-20 00:00 |
10:23:44.26 |
+19:02:00.8 |
HIP 50848 |
12.14 |
| 2026-05-20 12:00 |
10:23:36.33 |
+18:59:36.7 |
HIP 50848 |
12.03 |
| 2026-05-21 00:00 |
10:23:28.63 |
+18:57:12.1 |
HIP 50848 |
12.72 |
| 2026-05-21 12:00 |
10:23:21.18 |
+18:54:47.1 |
HIP 50848 |
14.06 |
| 2026-05-22 00:00 |
10:23:13.95 |
+18:52:21.8 |
HIP 50848 |
15.88 |
| 2026-05-22 12:00 |
10:23:06.97 |
+18:49:56.1 |
HIP 50848 |
18.01 |
| 2026-05-23 00:00 |
10:23:00.21 |
+18:47:30.1 |
HIP 50848 |
20.36 |
| 2026-05-23 12:00 |
10:22:53.68 |
+18:45:03.8 |
HIP 50936 |
22.49 |
| 2026-05-24 00:00 |
10:22:47.38 |
+18:42:37.1 |
HIP 50936 |
22.52 |
| 2026-05-24 12:00 |
10:22:41.31 |
+18:40:10.1 |
HIP 50936 |
22.86 |
| 2026-05-25 00:00 |
10:22:35.46 |
+18:37:42.8 |
HIP 50936 |
23.49 |
| 2026-05-25 12:00 |
10:22:29.83 |
+18:35:15.1 |
HIP 50936 |
24.38 |
| 2026-05-26 00:00 |
10:22:24.42 |
+18:32:47.2 |
HIP 50936 |
25.50 |
| 2026-05-26 12:00 |
10:22:19.22 |
+18:30:19.0 |
HIP 50936 |
26.80 |
| 2026-05-27 00:00 |
10:22:14.25 |
+18:27:50.5 |
HIP 50936 |
28.27 |
| 2026-05-27 12:00 |
10:22:09.49 |
+18:25:21.7 |
HIP 50936 |
29.87 |
| 2026-05-28 00:00 |
10:22:04.93 |
+18:22:52.7 |
HIP 50936 |
31.58 |
| 2026-05-28 12:00 |
10:22:00.59 |
+18:20:23.3 |
HIP 50936 |
33.37 |
| 2026-05-29 00:00 |
10:21:56.46 |
+18:17:53.8 |
HIP 50936 |
35.24 |
| 2026-05-29 12:00 |
10:21:52.54 |
+18:15:23.9 |
HIP 50936 |
37.16 |
| 2026-05-30 00:00 |
10:21:48.81 |
+18:12:53.9 |
HIP 50882 |
37.27 |
| 2026-05-30 12:00 |
10:21:45.30 |
+18:10:23.6 |
HIP 50882 |
35.85 |
| 2026-05-31 00:00 |
10:21:41.98 |
+18:07:53.0 |
HIP 50882 |
34.55 |
| 2026-05-31 12:00 |
10:21:38.86 |
+18:05:22.2 |
HIP 50882 |
33.36 |
| 2026-06-01 00:00 |
10:21:35.94 |
+18:02:51.2 |
HIP 50882 |
32.30 |
| 2026-06-01 12:00 |
10:21:33.21 |
+18:00:20.0 |
HIP 50882 |
31.39 |
| 2026-06-02 00:00 |
10:21:30.68 |
+17:57:48.6 |
HIP 50814 |
30.29 |