メタデータ
| 項目 |
値 |
| Designation |
488P/NEAT-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-02-25T20:27:35.637120Z |
| Orbit solution date (soln_date, UTC) |
2024-10-26T00:12:33Z |
| Obs used |
92 |
| NEO |
- |
| M1 |
15.700 |
| K1 |
16.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2002-08-29T05:09:46.368000Z |
| Discovery magnitude (MPC) |
19.00 R |
| Discovery observatory (MPC) |
644 · Palomar Mountain/NEAT |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2020-04-27.0000000 |
| e |
0.55045765 |
| q (au) |
1.679899 |
| a (au) |
3.736909 |
| i (deg) |
11.366619 |
| Ω (om, deg) |
324.110333 |
| ω (w, deg) |
1.302662 |
| M (ma, deg) |
157.742457 |
等級
散乱 + 全体線形
$$
M_a = (15.185 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.185 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
07:23:06.75 |
+26:45:18.6 |
HIP 35967 |
24.00 |
| 2026-06-01 12:00 |
07:23:31.83 |
+26:43:57.9 |
HIP 35967 |
18.27 |
| 2026-06-02 00:00 |
07:23:56.96 |
+26:42:37.2 |
HIP 35967 |
12.56 |
| 2026-06-02 12:00 |
07:24:22.14 |
+26:41:16.2 |
HIP 35967 |
6.93 |
| 2026-06-03 00:00 |
07:24:47.38 |
+26:39:55.1 |
HIP 35967 |
2.29 |
| 2026-06-03 12:00 |
07:25:12.66 |
+26:38:33.9 |
HIP 35967 |
5.45 |
| 2026-06-04 00:00 |
07:25:37.99 |
+26:37:12.5 |
HIP 35967 |
11.05 |
| 2026-06-04 12:00 |
07:26:03.37 |
+26:35:50.9 |
HIP 35967 |
16.81 |
| 2026-06-05 00:00 |
07:26:28.80 |
+26:34:29.1 |
HIP 35967 |
22.62 |
| 2026-06-05 12:00 |
07:26:54.27 |
+26:33:07.2 |
HIP 36262 |
24.53 |
| 2026-06-06 00:00 |
07:27:19.79 |
+26:31:45.1 |
HIP 36262 |
20.31 |
| 2026-06-06 12:00 |
07:27:45.36 |
+26:30:22.9 |
HIP 36262 |
17.09 |
| 2026-06-07 00:00 |
07:28:10.97 |
+26:29:00.4 |
HIP 36262 |
15.52 |
| 2026-06-07 12:00 |
07:28:36.63 |
+26:27:37.8 |
HIP 36262 |
16.11 |
| 2026-06-08 00:00 |
07:29:02.32 |
+26:26:15.1 |
HIP 36262 |
18.66 |
| 2026-06-08 12:00 |
07:29:28.06 |
+26:24:52.1 |
HIP 36262 |
22.52 |
| 2026-06-09 00:00 |
07:29:53.84 |
+26:23:29.0 |
HIP 36601 |
23.88 |
| 2026-06-09 12:00 |
07:30:19.66 |
+26:22:05.8 |
HIP 36601 |
18.59 |
| 2026-06-10 00:00 |
07:30:45.53 |
+26:20:42.3 |
HIP 36601 |
13.84 |
| 2026-06-10 12:00 |
07:31:11.43 |
+26:19:18.7 |
HIP 36601 |
10.41 |
| 2026-06-11 00:00 |
07:31:37.37 |
+26:17:54.9 |
HIP 36601 |
9.81 |
| 2026-06-11 12:00 |
07:32:03.34 |
+26:16:31.0 |
HIP 36601 |
12.48 |
| 2026-06-12 00:00 |
07:32:29.36 |
+26:15:06.8 |
HIP 36725 |
12.78 |
| 2026-06-12 12:00 |
07:32:55.41 |
+26:13:42.5 |
HIP 36725 |
7.90 |
| 2026-06-13 00:00 |
07:33:21.49 |
+26:12:18.1 |
HIP 36725 |
5.82 |
| 2026-06-13 12:00 |
07:33:47.61 |
+26:10:53.4 |
HIP 36725 |
8.82 |
| 2026-06-14 00:00 |
07:34:13.77 |
+26:09:28.6 |
HIP 36725 |
13.96 |
| 2026-06-14 12:00 |
07:34:39.95 |
+26:08:03.6 |
HIP 36725 |
19.62 |
| 2026-06-15 00:00 |
07:35:06.17 |
+26:06:38.4 |
HIP 36725 |
25.47 |
| 2026-06-15 12:00 |
07:35:32.42 |
+26:05:13.1 |
HIP 37064 |
28.80 |
| 2026-06-16 00:00 |
07:35:58.70 |
+26:03:47.6 |
HIP 37064 |
23.96 |
| 2026-06-16 12:00 |
07:36:25.01 |
+26:02:21.9 |
HIP 37064 |
19.82 |
| 2026-06-17 00:00 |
07:36:51.34 |
+26:00:56.1 |
HIP 37064 |
16.90 |
| 2026-06-17 12:00 |
07:37:17.71 |
+25:59:30.1 |
HIP 37064 |
15.89 |
| 2026-06-18 00:00 |
07:37:44.10 |
+25:58:03.9 |
HIP 37064 |
17.14 |
| 2026-06-18 12:00 |
07:38:10.51 |
+25:56:37.6 |
HIP 37064 |
20.25 |
| 2026-06-19 00:00 |
07:38:36.95 |
+25:55:11.1 |
HIP 37064 |
24.52 |
| 2026-06-19 12:00 |
07:39:03.41 |
+25:53:44.4 |
HIP 37064 |
29.45 |
| 2026-06-20 00:00 |
07:39:29.90 |
+25:52:17.6 |
HIP 37452 |
24.21 |
| 2026-06-20 12:00 |
07:39:56.41 |
+25:50:50.6 |
HIP 37452 |
18.39 |
| 2026-06-21 00:00 |
07:40:22.94 |
+25:49:23.4 |
HIP 37452 |
12.87 |
| 2026-06-21 12:00 |
07:40:49.49 |
+25:47:56.1 |
HIP 37452 |
8.28 |
| 2026-06-22 00:00 |
07:41:16.06 |
+25:46:28.6 |
HIP 37452 |
6.86 |