メタデータ
| 項目 |
値 |
| Designation |
462P/LONEOS-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2022-08-02T09:36:57.879360Z |
| Orbit solution date (soln_date, UTC) |
2024-01-26T23:44:19Z |
| Obs used |
182 |
| NEO |
- |
| M1 |
16.600 |
| K1 |
7.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2000-07-29T08:45:07.488000Z |
| Discovery magnitude (MPC) |
18.40 R |
| Discovery observatory (MPC) |
699 · Lowell Observatory-LONEOS |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2020-10-21.0000000 |
| e |
0.57792407 |
| q (au) |
2.063101 |
| a (au) |
4.887986 |
| i (deg) |
7.027368 |
| Ω (om, deg) |
322.920313 |
| ω (w, deg) |
4.420991 |
| M (ma, deg) |
300.681499 |
等級
散乱 + 全体線形
$$
M_a = (19.639 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.639 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.700 |
| 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) |
| 2026-09-20 00:00 |
09:23:09.09 |
+16:26:30.4 |
HIP 45894 |
26.55 |
| 2026-09-20 12:00 |
09:23:23.41 |
+16:25:19.5 |
HIP 45894 |
30.18 |
| 2026-09-21 00:00 |
09:23:37.67 |
+16:24:08.9 |
HIP 46232 |
29.65 |
| 2026-09-21 12:00 |
09:23:51.86 |
+16:22:58.4 |
HIP 46232 |
27.03 |
| 2026-09-22 00:00 |
09:24:05.99 |
+16:21:48.3 |
HIP 46232 |
24.67 |
| 2026-09-22 12:00 |
09:24:20.05 |
+16:20:38.4 |
HIP 46232 |
22.63 |
| 2026-09-23 00:00 |
09:24:34.05 |
+16:19:28.8 |
HIP 46232 |
21.02 |
| 2026-09-23 12:00 |
09:24:47.98 |
+16:18:19.4 |
HIP 46232 |
19.92 |
| 2026-09-24 00:00 |
09:25:01.84 |
+16:17:10.3 |
HIP 46232 |
19.42 |
| 2026-09-24 12:00 |
09:25:15.64 |
+16:16:01.4 |
HIP 46232 |
19.54 |
| 2026-09-25 00:00 |
09:25:29.37 |
+16:14:52.9 |
HIP 46232 |
20.27 |
| 2026-09-25 12:00 |
09:25:43.02 |
+16:13:44.6 |
HIP 46232 |
21.54 |
| 2026-09-26 00:00 |
09:25:56.61 |
+16:12:36.6 |
HIP 46232 |
23.26 |
| 2026-09-26 12:00 |
09:26:10.13 |
+16:11:28.9 |
HIP 46232 |
25.32 |
| 2026-09-27 00:00 |
09:26:23.58 |
+16:10:21.4 |
HIP 46232 |
27.64 |
| 2026-09-27 12:00 |
09:26:36.96 |
+16:09:14.3 |
HIP 46397 |
28.94 |
| 2026-09-28 00:00 |
09:26:50.27 |
+16:08:07.4 |
HIP 46397 |
26.42 |
| 2026-09-28 12:00 |
09:27:03.50 |
+16:07:00.9 |
HIP 46397 |
24.11 |
| 2026-09-29 00:00 |
09:27:16.66 |
+16:05:54.6 |
HIP 46397 |
22.10 |
| 2026-09-29 12:00 |
09:27:29.75 |
+16:04:48.7 |
HIP 46397 |
20.44 |
| 2026-09-30 00:00 |
09:27:42.77 |
+16:03:43.1 |
HIP 46397 |
19.23 |
| 2026-09-30 12:00 |
09:27:55.71 |
+16:02:37.7 |
HIP 46397 |
18.54 |
| 2026-10-01 00:00 |
09:28:08.57 |
+16:01:32.7 |
HIP 46397 |
18.42 |
| 2026-10-01 12:00 |
09:28:21.36 |
+16:00:28.1 |
HIP 46397 |
18.88 |
| 2026-10-02 00:00 |
09:28:34.07 |
+15:59:23.7 |
HIP 46397 |
19.85 |
| 2026-10-02 12:00 |
09:28:46.70 |
+15:58:19.7 |
HIP 46397 |
21.27 |
| 2026-10-03 00:00 |
09:28:59.26 |
+15:57:16.0 |
HIP 46397 |
23.05 |
| 2026-10-03 12:00 |
09:29:11.74 |
+15:56:12.6 |
HIP 46397 |
25.09 |
| 2026-10-04 00:00 |
09:29:24.14 |
+15:55:09.6 |
HIP 46561 |
25.98 |
| 2026-10-04 12:00 |
09:29:36.45 |
+15:54:06.9 |
HIP 46561 |
26.68 |
| 2026-10-05 00:00 |
09:29:48.69 |
+15:53:04.6 |
HIP 46745 |
27.41 |
| 2026-10-05 12:00 |
09:30:00.85 |
+15:52:02.6 |
HIP 46745 |
24.33 |
| 2026-10-06 00:00 |
09:30:12.92 |
+15:51:01.0 |
HIP 46745 |
21.27 |
| 2026-10-06 12:00 |
09:30:24.91 |
+15:49:59.8 |
HIP 46745 |
18.23 |
| 2026-10-07 00:00 |
09:30:36.82 |
+15:48:58.9 |
HIP 46745 |
15.22 |
| 2026-10-07 12:00 |
09:30:48.64 |
+15:47:58.4 |
HIP 46745 |
12.25 |
| 2026-10-08 00:00 |
09:31:00.38 |
+15:46:58.3 |
HIP 46745 |
9.33 |
| 2026-10-08 12:00 |
09:31:12.03 |
+15:45:58.5 |
HIP 46745 |
6.50 |
| 2026-10-09 00:00 |
09:31:23.60 |
+15:44:59.2 |
HIP 46745 |
3.91 |
| 2026-10-09 12:00 |
09:31:35.07 |
+15:44:00.2 |
HIP 46745 |
2.40 |
| 2026-10-10 00:00 |
09:31:46.46 |
+15:43:01.6 |
HIP 46745 |
3.65 |
| 2026-10-10 12:00 |
09:31:57.76 |
+15:42:03.5 |
HIP 46745 |
6.13 |
| 2026-10-11 00:00 |
09:32:08.97 |
+15:41:05.7 |
HIP 46745 |
8.83 |