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) |
| 2026-05-12 00:00 |
06:22:37.35 |
+27:00:11.6 |
HIP 30396 |
13.63 |
| 2026-05-12 12:00 |
06:23:04.81 |
+27:00:09.0 |
HIP 30396 |
8.94 |
| 2026-05-13 00:00 |
06:23:32.34 |
+27:00:06.1 |
HIP 30396 |
7.00 |
| 2026-05-13 12:00 |
06:23:59.95 |
+27:00:02.9 |
HIP 30396 |
9.67 |
| 2026-05-14 00:00 |
06:24:27.64 |
+26:59:59.5 |
HIP 30396 |
14.63 |
| 2026-05-14 12:00 |
06:24:55.39 |
+26:59:55.7 |
HIP 30396 |
20.28 |
| 2026-05-15 00:00 |
06:25:23.22 |
+26:59:51.7 |
HIP 30396 |
26.18 |
| 2026-05-15 12:00 |
06:25:51.12 |
+26:59:47.4 |
HIP 30724 |
27.64 |
| 2026-05-16 00:00 |
06:26:19.09 |
+26:59:42.8 |
HIP 30724 |
23.60 |
| 2026-05-16 12:00 |
06:26:47.13 |
+26:59:37.9 |
HIP 30724 |
20.68 |
| 2026-05-17 00:00 |
06:27:15.24 |
+26:59:32.8 |
HIP 30724 |
19.41 |
| 2026-05-17 12:00 |
06:27:43.42 |
+26:59:27.4 |
HIP 30880 |
16.30 |
| 2026-05-18 00:00 |
06:28:11.66 |
+26:59:21.6 |
HIP 30880 |
10.04 |
| 2026-05-18 12:00 |
06:28:39.96 |
+26:59:15.6 |
HIP 30880 |
3.84 |
| 2026-05-19 00:00 |
06:29:08.33 |
+26:59:09.3 |
HIP 30893 |
1.55 |
| 2026-05-19 12:00 |
06:29:36.77 |
+26:59:02.7 |
HIP 30893 |
7.09 |
| 2026-05-20 00:00 |
06:30:05.26 |
+26:58:55.9 |
HIP 30984 |
2.17 |
| 2026-05-20 12:00 |
06:30:33.81 |
+26:58:48.7 |
HIP 30984 |
5.71 |
| 2026-05-21 00:00 |
06:31:02.43 |
+26:58:41.2 |
HIP 30984 |
11.90 |
| 2026-05-21 12:00 |
06:31:31.10 |
+26:58:33.5 |
HIP 30984 |
18.24 |
| 2026-05-22 00:00 |
06:31:59.83 |
+26:58:25.4 |
HIP 31213 |
17.33 |
| 2026-05-22 12:00 |
06:32:28.62 |
+26:58:17.1 |
HIP 31213 |
13.85 |
| 2026-05-23 00:00 |
06:32:57.46 |
+26:58:08.5 |
HIP 31213 |
12.88 |
| 2026-05-23 12:00 |
06:33:26.36 |
+26:57:59.6 |
HIP 31310 |
8.46 |
| 2026-05-24 00:00 |
06:33:55.31 |
+26:57:50.4 |
HIP 31310 |
4.88 |
| 2026-05-24 12:00 |
06:34:24.32 |
+26:57:40.8 |
HIP 31310 |
7.72 |
| 2026-05-25 00:00 |
06:34:53.37 |
+26:57:31.0 |
HIP 31310 |
13.38 |
| 2026-05-25 12:00 |
06:35:22.48 |
+26:57:20.9 |
HIP 31535 |
17.43 |
| 2026-05-26 00:00 |
06:35:51.64 |
+26:57:10.5 |
HIP 31535 |
14.65 |
| 2026-05-26 12:00 |
06:36:20.84 |
+26:56:59.9 |
HIP 31535 |
14.49 |
| 2026-05-27 00:00 |
06:36:50.10 |
+26:56:48.9 |
HIP 31535 |
17.05 |
| 2026-05-27 12:00 |
06:37:19.40 |
+26:56:37.6 |
HIP 31759 |
17.12 |
| 2026-05-28 00:00 |
06:37:48.75 |
+26:56:26.0 |
HIP 31759 |
10.64 |
| 2026-05-28 12:00 |
06:38:18.15 |
+26:56:14.1 |
HIP 31759 |
4.32 |
| 2026-05-29 00:00 |
06:38:47.59 |
+26:56:02.0 |
HIP 31759 |
3.18 |
| 2026-05-29 12:00 |
06:39:17.07 |
+26:55:49.5 |
HIP 31759 |
9.38 |
| 2026-05-30 00:00 |
06:39:46.60 |
+26:55:36.7 |
HIP 31759 |
15.90 |
| 2026-05-30 12:00 |
06:40:16.17 |
+26:55:23.6 |
HIP 32044 |
21.50 |
| 2026-05-31 00:00 |
06:40:45.79 |
+26:55:10.3 |
HIP 32044 |
15.98 |
| 2026-05-31 12:00 |
06:41:15.45 |
+26:54:56.6 |
HIP 32044 |
11.66 |
| 2026-06-01 00:00 |
06:41:45.14 |
+26:54:42.6 |
HIP 32044 |
10.20 |
| 2026-06-01 12:00 |
06:42:14.88 |
+26:54:28.4 |
HIP 32044 |
12.64 |
| 2026-06-02 00:00 |
06:42:44.66 |
+26:54:13.8 |
HIP 32194 |
7.06 |