メタデータ
| 項目 |
値 |
| Designation |
C/2001 M10 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-06-21T05:05:18.251520Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:09Z |
| Obs used |
93 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
6.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-11-03.0000000 |
| e |
0.80109494 |
| q (au) |
5.302796 |
| a (au) |
26.659937 |
| i (deg) |
28.083400 |
| Ω (om, deg) |
293.917499 |
| ω (w, deg) |
5.478964 |
| M (ma, deg) |
0.965087 |
等級
散乱 + 全体線形
$$
M_a = (11.120 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.120 |
| n |
2.000 |
| gf |
0.974 |
| gb |
-0.951 |
| k |
1.000 |
| δ90 |
9.726 |
| 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 |
06:17:03.32 |
+33:02:18.4 |
HIP 29760 |
16.10 |
| 2026-05-12 12:00 |
06:17:06.62 |
+33:02:09.2 |
HIP 29760 |
16.75 |
| 2026-05-13 00:00 |
06:17:09.95 |
+33:02:00.0 |
HIP 29760 |
17.41 |
| 2026-05-13 12:00 |
06:17:13.31 |
+33:01:50.8 |
HIP 29760 |
18.07 |
| 2026-05-14 00:00 |
06:17:16.68 |
+33:01:41.7 |
HIP 29760 |
18.75 |
| 2026-05-14 12:00 |
06:17:20.08 |
+33:01:32.6 |
HIP 29874 |
19.11 |
| 2026-05-15 00:00 |
06:17:23.49 |
+33:01:23.6 |
HIP 29874 |
18.94 |
| 2026-05-15 12:00 |
06:17:26.93 |
+33:01:14.6 |
HIP 29874 |
18.79 |
| 2026-05-16 00:00 |
06:17:30.39 |
+33:01:05.7 |
HIP 29874 |
18.67 |
| 2026-05-16 12:00 |
06:17:33.87 |
+33:00:56.8 |
HIP 29874 |
18.59 |
| 2026-05-17 00:00 |
06:17:37.37 |
+33:00:47.9 |
HIP 29874 |
18.53 |
| 2026-05-17 12:00 |
06:17:40.89 |
+33:00:39.1 |
HIP 29874 |
18.51 |
| 2026-05-18 00:00 |
06:17:44.43 |
+33:00:30.4 |
HIP 29874 |
18.51 |
| 2026-05-18 12:00 |
06:17:47.99 |
+33:00:21.7 |
HIP 29874 |
18.56 |
| 2026-05-19 00:00 |
06:17:51.57 |
+33:00:13.0 |
HIP 29874 |
18.63 |
| 2026-05-19 12:00 |
06:17:55.17 |
+33:00:04.4 |
HIP 29874 |
18.74 |
| 2026-05-20 00:00 |
06:17:58.78 |
+32:59:55.9 |
HIP 29874 |
18.88 |
| 2026-05-20 12:00 |
06:18:02.42 |
+32:59:47.3 |
HIP 29874 |
19.05 |
| 2026-05-21 00:00 |
06:18:06.07 |
+32:59:38.9 |
HIP 29874 |
19.25 |
| 2026-05-21 12:00 |
06:18:09.74 |
+32:59:30.5 |
HIP 29874 |
19.49 |
| 2026-05-22 00:00 |
06:18:13.43 |
+32:59:22.1 |
HIP 29874 |
19.76 |
| 2026-05-22 12:00 |
06:18:17.14 |
+32:59:13.8 |
HIP 29874 |
20.06 |
| 2026-05-23 00:00 |
06:18:20.86 |
+32:59:05.5 |
HIP 29874 |
20.38 |
| 2026-05-23 12:00 |
06:18:24.60 |
+32:58:57.3 |
HIP 29874 |
20.74 |
| 2026-05-24 00:00 |
06:18:28.36 |
+32:58:49.1 |
HIP 29874 |
21.12 |
| 2026-05-24 12:00 |
06:18:32.14 |
+32:58:41.0 |
HIP 29874 |
21.53 |
| 2026-05-25 00:00 |
06:18:35.93 |
+32:58:32.9 |
HIP 29874 |
21.96 |
| 2026-05-25 12:00 |
06:18:39.73 |
+32:58:24.9 |
HIP 29874 |
22.42 |
| 2026-05-26 00:00 |
06:18:43.56 |
+32:58:17.0 |
HIP 29874 |
22.90 |
| 2026-05-26 12:00 |
06:18:47.40 |
+32:58:09.0 |
HIP 29874 |
23.40 |
| 2026-05-27 00:00 |
06:18:51.25 |
+32:58:01.2 |
HIP 29874 |
23.92 |
| 2026-05-27 12:00 |
06:18:55.12 |
+32:57:53.4 |
HIP 29874 |
24.46 |
| 2026-05-28 00:00 |
06:18:59.00 |
+32:57:45.6 |
HIP 29874 |
25.02 |
| 2026-05-28 12:00 |
06:19:02.90 |
+32:57:37.9 |
HIP 29874 |
25.59 |
| 2026-05-29 00:00 |
06:19:06.81 |
+32:57:30.2 |
HIP 29874 |
26.19 |
| 2026-05-29 12:00 |
06:19:10.74 |
+32:57:22.6 |
HIP 29874 |
26.80 |
| 2026-05-30 00:00 |
06:19:14.68 |
+32:57:15.1 |
HIP 29874 |
27.42 |
| 2026-05-30 12:00 |
06:19:18.64 |
+32:57:07.6 |
HIP 29874 |
28.06 |
| 2026-05-31 00:00 |
06:19:22.60 |
+32:57:00.1 |
HIP 29874 |
28.71 |
| 2026-05-31 12:00 |
06:19:26.58 |
+32:56:52.7 |
HIP 29874 |
29.37 |
| 2026-06-01 00:00 |
06:19:30.58 |
+32:56:45.4 |
HIP 29874 |
30.05 |
| 2026-06-01 12:00 |
06:19:34.59 |
+32:56:38.1 |
HIP 29874 |
30.73 |
| 2026-06-02 00:00 |
06:19:38.61 |
+32:56:30.8 |
HIP 29874 |
31.43 |