メタデータ
| 項目 |
値 |
| Designation |
P/2024 R1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2024-06-15T15:55:12.869760Z |
| Orbit solution date (soln_date, UTC) |
2024-10-11T15:13:32Z |
| Obs used |
46 |
| NEO |
- |
| M1 |
19.200 |
| K1 |
5.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2024-09-01T13:19:48.633600Z |
| Discovery magnitude (MPC) |
21.36 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) |
2024-09-08.0000000 |
| e |
0.49291197 |
| q (au) |
1.749729 |
| a (au) |
3.450542 |
| i (deg) |
12.736343 |
| Ω (om, deg) |
84.982836 |
| ω (w, deg) |
230.577928 |
| M (ma, deg) |
12.968491 |
等級
散乱 + 全体線形
$$
M_a = (17.458 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.458 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.541 |
| 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 |
05:47:46.24 |
+26:48:23.5 |
HIP 27527 |
32.66 |
| 2026-03-26 12:00 |
05:48:01.61 |
+26:48:37.6 |
HIP 27527 |
29.79 |
| 2026-03-27 00:00 |
05:48:17.17 |
+26:48:51.7 |
HIP 27527 |
27.01 |
| 2026-03-27 12:00 |
05:48:32.92 |
+26:49:05.7 |
HIP 27562 |
23.97 |
| 2026-03-28 00:00 |
05:48:48.85 |
+26:49:19.6 |
HIP 27562 |
20.60 |
| 2026-03-28 12:00 |
05:49:04.97 |
+26:49:33.4 |
HIP 27562 |
17.27 |
| 2026-03-29 00:00 |
05:49:21.27 |
+26:49:47.2 |
HIP 27562 |
14.04 |
| 2026-03-29 12:00 |
05:49:37.75 |
+26:50:00.9 |
HIP 27562 |
11.05 |
| 2026-03-30 00:00 |
05:49:54.41 |
+26:50:14.5 |
HIP 27562 |
8.58 |
| 2026-03-30 12:00 |
05:50:11.25 |
+26:50:28.0 |
HIP 27562 |
7.28 |
| 2026-03-31 00:00 |
05:50:28.27 |
+26:50:41.5 |
HIP 27562 |
7.81 |
| 2026-03-31 12:00 |
05:50:45.46 |
+26:50:54.8 |
HIP 27562 |
9.92 |
| 2026-04-01 00:00 |
05:51:02.83 |
+26:51:08.1 |
HIP 27562 |
12.89 |
| 2026-04-01 12:00 |
05:51:20.36 |
+26:51:21.3 |
HIP 27562 |
16.28 |
| 2026-04-02 00:00 |
05:51:38.07 |
+26:51:34.4 |
HIP 27562 |
19.90 |
| 2026-04-02 12:00 |
05:51:55.95 |
+26:51:47.4 |
HIP 27817 |
19.66 |
| 2026-04-03 00:00 |
05:52:14.00 |
+26:52:00.2 |
HIP 27817 |
16.32 |
| 2026-04-03 12:00 |
05:52:32.21 |
+26:52:13.0 |
HIP 27817 |
13.35 |
| 2026-04-04 00:00 |
05:52:50.59 |
+26:52:25.7 |
HIP 27817 |
11.07 |
| 2026-04-04 12:00 |
05:53:09.14 |
+26:52:38.3 |
HIP 27817 |
10.03 |
| 2026-04-05 00:00 |
05:53:27.84 |
+26:52:50.7 |
HIP 27817 |
10.65 |
| 2026-04-05 12:00 |
05:53:46.71 |
+26:53:03.1 |
HIP 27817 |
12.71 |
| 2026-04-06 00:00 |
05:54:05.74 |
+26:53:15.3 |
HIP 27907 |
15.16 |
| 2026-04-06 12:00 |
05:54:24.93 |
+26:53:27.4 |
HIP 27907 |
15.14 |
| 2026-04-07 00:00 |
05:54:44.27 |
+26:53:39.4 |
HIP 27907 |
16.30 |
| 2026-04-07 12:00 |
05:55:03.78 |
+26:53:51.3 |
HIP 27907 |
18.45 |
| 2026-04-08 00:00 |
05:55:23.44 |
+26:54:03.1 |
HIP 27907 |
21.30 |
| 2026-04-08 12:00 |
05:55:43.25 |
+26:54:14.7 |
HIP 28185 |
21.63 |
| 2026-04-09 00:00 |
05:56:03.21 |
+26:54:26.2 |
HIP 28185 |
17.27 |
| 2026-04-09 12:00 |
05:56:23.33 |
+26:54:37.5 |
HIP 28185 |
12.94 |
| 2026-04-10 00:00 |
05:56:43.60 |
+26:54:48.7 |
HIP 28185 |
8.74 |
| 2026-04-10 12:00 |
05:57:04.02 |
+26:54:59.8 |
HIP 28185 |
5.09 |
| 2026-04-11 00:00 |
05:57:24.58 |
+26:55:10.8 |
HIP 28185 |
4.14 |
| 2026-04-11 12:00 |
05:57:45.30 |
+26:55:21.6 |
HIP 28185 |
7.13 |
| 2026-04-12 00:00 |
05:58:06.15 |
+26:55:32.2 |
HIP 28276 |
8.58 |
| 2026-04-12 12:00 |
05:58:27.16 |
+26:55:42.7 |
HIP 28276 |
7.11 |
| 2026-04-13 00:00 |
05:58:48.30 |
+26:55:53.0 |
HIP 28276 |
8.46 |
| 2026-04-13 12:00 |
05:59:09.59 |
+26:56:03.2 |
HIP 28276 |
11.73 |
| 2026-04-14 00:00 |
05:59:31.02 |
+26:56:13.3 |
HIP 28276 |
15.80 |
| 2026-04-14 12:00 |
05:59:52.59 |
+26:56:23.1 |
HIP 28417 |
20.18 |
| 2026-04-15 00:00 |
06:00:14.30 |
+26:56:32.8 |
HIP 28417 |
19.88 |
| 2026-04-15 12:00 |
06:00:36.15 |
+26:56:42.4 |
HIP 28417 |
20.75 |
| 2026-04-16 00:00 |
06:00:58.13 |
+26:56:51.8 |
HIP 28528 |
20.53 |