メタデータ
| 項目 |
値 |
| Designation |
C/2001 M10 (NEAT) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-06-21T05:00:15.782400Z |
| Orbit solution date (soln_date, UTC) |
2026-06-18T16:12:18Z |
| Obs used |
96 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
4.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-11-06.0000000 |
| e |
0.80109025 |
| q (au) |
5.302793 |
| a (au) |
26.659293 |
| i (deg) |
28.083417 |
| Ω (om, deg) |
293.917513 |
| ω (w, deg) |
5.478589 |
| M (ma, deg) |
0.986628 |
等級
散乱 + 全体線形
$$
M_a = (11.116 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.116 |
| n |
2.000 |
| gf |
0.981 |
| gb |
-0.951 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-07-29 00:00 |
06:27:36.27 |
+32:49:15.3 |
HIP 30751 |
12.05 |
| 2026-07-29 12:00 |
06:27:40.07 |
+32:49:15.2 |
HIP 30751 |
12.01 |
| 2026-07-30 00:00 |
06:27:43.85 |
+32:49:15.0 |
HIP 30751 |
12.03 |
| 2026-07-30 12:00 |
06:27:47.62 |
+32:49:15.0 |
HIP 30751 |
12.10 |
| 2026-07-31 00:00 |
06:27:51.38 |
+32:49:15.0 |
HIP 30751 |
12.22 |
| 2026-07-31 12:00 |
06:27:55.11 |
+32:49:15.0 |
HIP 30751 |
12.39 |
| 2026-08-01 00:00 |
06:27:58.83 |
+32:49:15.2 |
HIP 30751 |
12.60 |
| 2026-08-01 12:00 |
06:28:02.53 |
+32:49:15.4 |
HIP 30751 |
12.86 |
| 2026-08-02 00:00 |
06:28:06.22 |
+32:49:15.6 |
HIP 30751 |
13.17 |
| 2026-08-02 12:00 |
06:28:09.89 |
+32:49:16.0 |
HIP 30751 |
13.50 |
| 2026-08-03 00:00 |
06:28:13.54 |
+32:49:16.3 |
HIP 30751 |
13.88 |
| 2026-08-03 12:00 |
06:28:17.17 |
+32:49:16.8 |
HIP 30751 |
14.28 |
| 2026-08-04 00:00 |
06:28:20.78 |
+32:49:17.3 |
HIP 30751 |
14.71 |
| 2026-08-04 12:00 |
06:28:24.38 |
+32:49:17.9 |
HIP 30751 |
15.16 |
| 2026-08-05 00:00 |
06:28:27.95 |
+32:49:18.5 |
HIP 30751 |
15.64 |
| 2026-08-05 12:00 |
06:28:31.51 |
+32:49:19.3 |
HIP 30751 |
16.13 |
| 2026-08-06 00:00 |
06:28:35.05 |
+32:49:20.0 |
HIP 30751 |
16.65 |
| 2026-08-06 12:00 |
06:28:38.57 |
+32:49:20.9 |
HIP 30751 |
17.17 |
| 2026-08-07 00:00 |
06:28:42.07 |
+32:49:21.8 |
HIP 30751 |
17.71 |
| 2026-08-07 12:00 |
06:28:45.55 |
+32:49:22.7 |
HIP 30751 |
18.26 |
| 2026-08-08 00:00 |
06:28:49.01 |
+32:49:23.8 |
HIP 30751 |
18.82 |
| 2026-08-08 12:00 |
06:28:52.45 |
+32:49:24.8 |
HIP 30751 |
19.39 |
| 2026-08-09 00:00 |
06:28:55.87 |
+32:49:26.0 |
HIP 30751 |
19.97 |
| 2026-08-09 12:00 |
06:28:59.26 |
+32:49:27.2 |
HIP 30751 |
20.55 |
| 2026-08-10 00:00 |
06:29:02.64 |
+32:49:28.5 |
HIP 30751 |
21.14 |
| 2026-08-10 12:00 |
06:29:06.00 |
+32:49:29.8 |
HIP 30751 |
21.73 |
| 2026-08-11 00:00 |
06:29:09.33 |
+32:49:31.3 |
HIP 30751 |
22.33 |
| 2026-08-11 12:00 |
06:29:12.64 |
+32:49:32.7 |
HIP 31054 |
22.53 |
| 2026-08-12 00:00 |
06:29:15.93 |
+32:49:34.3 |
HIP 31054 |
21.84 |
| 2026-08-12 12:00 |
06:29:19.20 |
+32:49:35.9 |
HIP 31054 |
21.16 |
| 2026-08-13 00:00 |
06:29:22.45 |
+32:49:37.5 |
HIP 31054 |
20.48 |
| 2026-08-13 12:00 |
06:29:25.67 |
+32:49:39.2 |
HIP 31054 |
19.81 |
| 2026-08-14 00:00 |
06:29:28.87 |
+32:49:41.0 |
HIP 31054 |
19.14 |
| 2026-08-14 12:00 |
06:29:32.05 |
+32:49:42.9 |
HIP 31054 |
18.47 |
| 2026-08-15 00:00 |
06:29:35.20 |
+32:49:44.8 |
HIP 31054 |
17.81 |
| 2026-08-15 12:00 |
06:29:38.33 |
+32:49:46.8 |
HIP 31054 |
17.16 |
| 2026-08-16 00:00 |
06:29:41.44 |
+32:49:48.8 |
HIP 31054 |
16.51 |
| 2026-08-16 12:00 |
06:29:44.52 |
+32:49:50.9 |
HIP 31054 |
15.87 |
| 2026-08-17 00:00 |
06:29:47.58 |
+32:49:53.1 |
HIP 31054 |
15.24 |
| 2026-08-17 12:00 |
06:29:50.62 |
+32:49:55.3 |
HIP 31054 |
14.61 |
| 2026-08-18 00:00 |
06:29:53.63 |
+32:49:57.6 |
HIP 31054 |
13.98 |
| 2026-08-18 12:00 |
06:29:56.61 |
+32:50:00.0 |
HIP 31054 |
13.36 |
| 2026-08-19 00:00 |
06:29:59.57 |
+32:50:02.3 |
HIP 31054 |
12.75 |