メタデータ
| 項目 |
値 |
| Designation |
P/2024 R2 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-10-01T23:06:13.608000Z |
| Orbit solution date (soln_date, UTC) |
2025-02-13T09:13:03Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
15.600 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-09-03T12:43:40.080000Z |
| Discovery magnitude (MPC) |
20.72 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) |
2024-09-12.0000000 |
| e |
0.26821638 |
| q (au) |
2.303780 |
| a (au) |
3.148171 |
| i (deg) |
15.120781 |
| Ω (om, deg) |
193.061486 |
| ω (w, deg) |
203.974490 |
| M (ma, deg) |
356.477630 |
等級
散乱 + 全体線形
$$
M_a = (16.480 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.480 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-06-01 00:00 |
10:15:33.96 |
+04:27:00.9 |
HIP 50266 |
19.71 |
| 2026-06-01 12:00 |
10:15:54.46 |
+04:26:51.6 |
HIP 50266 |
19.17 |
| 2026-06-02 00:00 |
10:16:15.11 |
+04:26:40.8 |
HIP 50266 |
19.96 |
| 2026-06-02 12:00 |
10:16:35.91 |
+04:26:28.5 |
HIP 50429 |
21.03 |
| 2026-06-03 00:00 |
10:16:56.87 |
+04:26:14.8 |
HIP 50429 |
16.88 |
| 2026-06-03 12:00 |
10:17:17.99 |
+04:25:59.6 |
HIP 50429 |
13.50 |
| 2026-06-04 00:00 |
10:17:39.25 |
+04:25:42.9 |
HIP 50429 |
11.63 |
| 2026-06-04 12:00 |
10:18:00.66 |
+04:25:24.8 |
HIP 50429 |
12.06 |
| 2026-06-05 00:00 |
10:18:22.22 |
+04:25:05.3 |
HIP 50429 |
14.63 |
| 2026-06-05 12:00 |
10:18:43.93 |
+04:24:44.3 |
HIP 50429 |
18.50 |
| 2026-06-06 00:00 |
10:19:05.78 |
+04:24:21.9 |
HIP 50429 |
23.04 |
| 2026-06-06 12:00 |
10:19:27.78 |
+04:23:58.1 |
HIP 50656 |
23.74 |
| 2026-06-07 00:00 |
10:19:49.92 |
+04:23:32.8 |
HIP 50656 |
20.09 |
| 2026-06-07 12:00 |
10:20:12.21 |
+04:23:06.2 |
HIP 50656 |
17.46 |
| 2026-06-08 00:00 |
10:20:34.63 |
+04:22:38.1 |
HIP 50656 |
16.40 |
| 2026-06-08 12:00 |
10:20:57.20 |
+04:22:08.7 |
HIP 50749 |
12.39 |
| 2026-06-09 00:00 |
10:21:19.90 |
+04:21:37.9 |
HIP 50749 |
7.02 |
| 2026-06-09 12:00 |
10:21:42.74 |
+04:21:05.7 |
HIP 50749 |
3.10 |
| 2026-06-10 00:00 |
10:22:05.72 |
+04:20:32.1 |
HIP 50749 |
5.97 |
| 2026-06-10 12:00 |
10:22:28.83 |
+04:19:57.1 |
HIP 50749 |
11.34 |
| 2026-06-11 00:00 |
10:22:52.08 |
+04:19:20.8 |
HIP 50749 |
17.02 |
| 2026-06-11 12:00 |
10:23:15.47 |
+04:18:43.2 |
HIP 50749 |
22.81 |
| 2026-06-12 00:00 |
10:23:38.98 |
+04:18:04.1 |
HIP 50983 |
22.40 |
| 2026-06-12 12:00 |
10:24:02.63 |
+04:17:23.8 |
HIP 50983 |
18.43 |
| 2026-06-13 00:00 |
10:24:26.40 |
+04:16:42.1 |
HIP 50983 |
15.76 |
| 2026-06-13 12:00 |
10:24:50.31 |
+04:15:59.1 |
HIP 50983 |
15.13 |
| 2026-06-14 00:00 |
10:25:14.34 |
+04:15:14.7 |
HIP 50983 |
16.81 |
| 2026-06-14 12:00 |
10:25:38.50 |
+04:14:29.1 |
HIP 51032 |
19.87 |
| 2026-06-15 00:00 |
10:26:02.78 |
+04:13:42.1 |
HIP 51075 |
17.82 |
| 2026-06-15 12:00 |
10:26:27.19 |
+04:12:53.9 |
HIP 51075 |
17.53 |
| 2026-06-16 00:00 |
10:26:51.72 |
+04:12:04.3 |
HIP 51075 |
19.29 |
| 2026-06-16 12:00 |
10:27:16.37 |
+04:11:13.5 |
HIP 51190 |
20.40 |
| 2026-06-17 00:00 |
10:27:41.15 |
+04:10:21.4 |
HIP 51190 |
19.90 |
| 2026-06-17 12:00 |
10:28:06.04 |
+04:09:28.0 |
HIP 51190 |
21.29 |
| 2026-06-18 00:00 |
10:28:31.05 |
+04:08:33.4 |
HIP 51370 |
21.14 |
| 2026-06-18 12:00 |
10:28:56.18 |
+04:07:37.5 |
HIP 51370 |
16.45 |
| 2026-06-19 00:00 |
10:29:21.42 |
+04:06:40.4 |
HIP 51370 |
13.18 |
| 2026-06-19 12:00 |
10:29:46.77 |
+04:05:42.0 |
HIP 51370 |
12.56 |
| 2026-06-20 00:00 |
10:30:12.24 |
+04:04:42.5 |
HIP 51370 |
14.95 |
| 2026-06-20 12:00 |
10:30:37.82 |
+04:03:41.7 |
HIP 51370 |
19.31 |
| 2026-06-21 00:00 |
10:31:03.51 |
+04:02:39.7 |
HIP 51370 |
24.62 |
| 2026-06-21 12:00 |
10:31:29.31 |
+04:01:36.5 |
HIP 51370 |
30.42 |
| 2026-06-22 00:00 |
10:31:55.22 |
+04:00:32.1 |
HIP 51742 |
36.24 |