メタデータ
| 項目 |
値 |
| Designation |
P/2024 Q1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-06-14T12:42:16.583040Z |
| Orbit solution date (soln_date, UTC) |
2024-10-31T13:12:25Z |
| Obs used |
106 |
| NEO |
- |
| M1 |
18.700 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-08-27T13:01:30.921600Z |
| Discovery magnitude (MPC) |
20.21 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) |
2024-09-07.0000000 |
| e |
0.53479138 |
| q (au) |
1.636333 |
| a (au) |
3.517418 |
| i (deg) |
5.015508 |
| Ω (om, deg) |
23.138189 |
| ω (w, deg) |
284.407930 |
| M (ma, deg) |
12.620424 |
等級
散乱 + 全体線形
$$
M_a = (19.503 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.503 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.691 |
| k |
0.943 |
| 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
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 |
07:57:23.69 |
+25:22:20.6 |
HIP 38630 |
38.93 |
| 2026-09-20 12:00 |
07:57:42.15 |
+25:21:53.9 |
HIP 38985 |
41.56 |
| 2026-09-21 00:00 |
07:58:00.48 |
+25:21:27.4 |
HIP 39148 |
38.25 |
| 2026-09-21 12:00 |
07:58:18.67 |
+25:21:01.4 |
HIP 39148 |
34.53 |
| 2026-09-22 00:00 |
07:58:36.72 |
+25:20:35.8 |
HIP 39148 |
30.94 |
| 2026-09-22 12:00 |
07:58:54.63 |
+25:20:10.5 |
HIP 39148 |
27.52 |
| 2026-09-23 00:00 |
07:59:12.41 |
+25:19:45.7 |
HIP 39191 |
23.68 |
| 2026-09-23 12:00 |
07:59:30.05 |
+25:19:21.3 |
HIP 39191 |
19.84 |
| 2026-09-24 00:00 |
07:59:47.55 |
+25:18:57.2 |
HIP 39191 |
16.11 |
| 2026-09-24 12:00 |
08:00:04.90 |
+25:18:33.6 |
HIP 39191 |
12.56 |
| 2026-09-25 00:00 |
08:00:22.12 |
+25:18:10.4 |
HIP 39191 |
9.34 |
| 2026-09-25 12:00 |
08:00:39.19 |
+25:17:47.6 |
HIP 39191 |
6.90 |
| 2026-09-26 00:00 |
08:00:56.12 |
+25:17:25.2 |
HIP 39191 |
6.15 |
| 2026-09-26 12:00 |
08:01:12.91 |
+25:17:03.3 |
HIP 39191 |
7.57 |
| 2026-09-27 00:00 |
08:01:29.55 |
+25:16:41.8 |
HIP 39191 |
10.26 |
| 2026-09-27 12:00 |
08:01:46.04 |
+25:16:20.7 |
HIP 39263 |
10.99 |
| 2026-09-28 00:00 |
08:02:02.39 |
+25:16:00.1 |
HIP 39263 |
11.44 |
| 2026-09-28 12:00 |
08:02:18.59 |
+25:15:40.0 |
HIP 39263 |
12.97 |
| 2026-09-29 00:00 |
08:02:34.64 |
+25:15:20.2 |
HIP 39263 |
15.23 |
| 2026-09-29 12:00 |
08:02:50.54 |
+25:15:01.0 |
HIP 39263 |
17.93 |
| 2026-09-30 00:00 |
08:03:06.29 |
+25:14:42.2 |
HIP 39263 |
20.88 |
| 2026-09-30 12:00 |
08:03:21.89 |
+25:14:23.9 |
HIP 39297 |
23.45 |
| 2026-10-01 00:00 |
08:03:37.34 |
+25:14:06.1 |
HIP 39297 |
25.96 |
| 2026-10-01 12:00 |
08:03:52.63 |
+25:13:48.7 |
HIP 39297 |
28.66 |
| 2026-10-02 00:00 |
08:04:07.77 |
+25:13:31.9 |
HIP 39648 |
31.45 |
| 2026-10-02 12:00 |
08:04:22.75 |
+25:13:15.5 |
HIP 39648 |
28.75 |
| 2026-10-03 00:00 |
08:04:37.57 |
+25:12:59.6 |
HIP 39648 |
26.23 |
| 2026-10-03 12:00 |
08:04:52.24 |
+25:12:44.2 |
HIP 39648 |
23.94 |
| 2026-10-04 00:00 |
08:05:06.74 |
+25:12:29.4 |
HIP 39648 |
21.94 |
| 2026-10-04 12:00 |
08:05:21.09 |
+25:12:15.0 |
HIP 39648 |
20.28 |
| 2026-10-05 00:00 |
08:05:35.27 |
+25:12:01.2 |
HIP 39648 |
19.04 |
| 2026-10-05 12:00 |
08:05:49.29 |
+25:11:47.9 |
HIP 39648 |
18.29 |
| 2026-10-06 00:00 |
08:06:03.15 |
+25:11:35.1 |
HIP 39648 |
18.07 |
| 2026-10-06 12:00 |
08:06:16.84 |
+25:11:22.9 |
HIP 39648 |
18.38 |
| 2026-10-07 00:00 |
08:06:30.37 |
+25:11:11.2 |
HIP 39648 |
19.17 |
| 2026-10-07 12:00 |
08:06:43.73 |
+25:11:00.0 |
HIP 39648 |
20.37 |
| 2026-10-08 00:00 |
08:06:56.92 |
+25:10:49.4 |
HIP 39648 |
21.89 |
| 2026-10-08 12:00 |
08:07:09.94 |
+25:10:39.4 |
HIP 39648 |
23.67 |
| 2026-10-09 00:00 |
08:07:22.79 |
+25:10:29.9 |
HIP 39648 |
25.63 |
| 2026-10-09 12:00 |
08:07:35.47 |
+25:10:21.0 |
HIP 39835 |
24.95 |
| 2026-10-10 00:00 |
08:07:47.97 |
+25:10:12.7 |
HIP 39835 |
24.08 |
| 2026-10-10 12:00 |
08:08:00.30 |
+25:10:04.9 |
HIP 39835 |
23.52 |
| 2026-10-11 00:00 |
08:08:12.46 |
+25:09:57.7 |
HIP 39835 |
23.28 |