メタデータ
| 項目 |
値 |
| Designation |
C/2011 M1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2011-09-07T13:44:21.122880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:52Z |
| Obs used |
109 |
| NEO |
- |
| M1 |
12.300 |
| K1 |
18.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-07-02.0000000 |
| e |
1.00267426 |
| q (au) |
0.895753 |
| a (au) |
-334.952908 |
| i (deg) |
70.183172 |
| Ω (om, deg) |
324.795673 |
| ω (w, deg) |
119.568947 |
| M (ma, deg) |
-0.010864 |
等級
散乱 + 全体線形
$$
M_a = (13.255 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.255 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2011-06-22 |
2011-07-13 |
+34.0421 |
-6.777 |
| 2011-07-13 |
2011-09-07 |
+17.3304 |
-3.287 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
08:04:28.97 |
-86:53:50.5 |
HIP 40514 |
22.76 |
| 2026-05-12 12:00 |
08:04:51.72 |
-86:53:03.8 |
HIP 40514 |
21.93 |
| 2026-05-13 00:00 |
08:05:14.79 |
-86:52:17.2 |
HIP 40514 |
21.09 |
| 2026-05-13 12:00 |
08:05:38.17 |
-86:51:30.8 |
HIP 40514 |
20.26 |
| 2026-05-14 00:00 |
08:06:01.86 |
-86:50:44.4 |
HIP 40514 |
19.43 |
| 2026-05-14 12:00 |
08:06:25.86 |
-86:49:58.2 |
HIP 40514 |
18.59 |
| 2026-05-15 00:00 |
08:06:50.15 |
-86:49:12.0 |
HIP 40514 |
17.76 |
| 2026-05-15 12:00 |
08:07:14.73 |
-86:48:26.0 |
HIP 40514 |
16.92 |
| 2026-05-16 00:00 |
08:07:39.61 |
-86:47:40.1 |
HIP 40514 |
16.08 |
| 2026-05-16 12:00 |
08:08:04.76 |
-86:46:54.4 |
HIP 40514 |
15.24 |
| 2026-05-17 00:00 |
08:08:30.20 |
-86:46:08.7 |
HIP 40514 |
14.40 |
| 2026-05-17 12:00 |
08:08:55.91 |
-86:45:23.2 |
HIP 40514 |
13.57 |
| 2026-05-18 00:00 |
08:09:21.89 |
-86:44:37.8 |
HIP 40514 |
12.73 |
| 2026-05-18 12:00 |
08:09:48.14 |
-86:43:52.5 |
HIP 40514 |
11.88 |
| 2026-05-19 00:00 |
08:10:14.65 |
-86:43:07.4 |
HIP 40514 |
11.04 |
| 2026-05-19 12:00 |
08:10:41.41 |
-86:42:22.4 |
HIP 40514 |
10.20 |
| 2026-05-20 00:00 |
08:11:08.43 |
-86:41:37.6 |
HIP 40514 |
9.36 |
| 2026-05-20 12:00 |
08:11:35.70 |
-86:40:52.8 |
HIP 40514 |
8.52 |
| 2026-05-21 00:00 |
08:12:03.20 |
-86:40:08.3 |
HIP 40514 |
7.67 |
| 2026-05-21 12:00 |
08:12:30.95 |
-86:39:23.8 |
HIP 40514 |
6.83 |
| 2026-05-22 00:00 |
08:12:58.93 |
-86:38:39.5 |
HIP 40514 |
5.99 |
| 2026-05-22 12:00 |
08:13:27.15 |
-86:37:55.4 |
HIP 40514 |
5.14 |
| 2026-05-23 00:00 |
08:13:55.59 |
-86:37:11.4 |
HIP 40514 |
4.30 |
| 2026-05-23 12:00 |
08:14:24.25 |
-86:36:27.5 |
HIP 40514 |
3.45 |
| 2026-05-24 00:00 |
08:14:53.13 |
-86:35:43.8 |
HIP 40514 |
2.61 |
| 2026-05-24 12:00 |
08:15:22.23 |
-86:35:00.3 |
HIP 40514 |
1.77 |
| 2026-05-25 00:00 |
08:15:51.54 |
-86:34:16.9 |
HIP 40514 |
0.92 |
| 2026-05-25 12:00 |
08:16:21.06 |
-86:33:33.6 |
HIP 40514 |
0.13 |
| 2026-05-26 00:00 |
08:16:50.78 |
-86:32:50.5 |
HIP 40514 |
0.78 |
| 2026-05-26 12:00 |
08:17:20.71 |
-86:32:07.6 |
HIP 40514 |
1.63 |
| 2026-05-27 00:00 |
08:17:50.83 |
-86:31:24.8 |
HIP 40514 |
2.47 |
| 2026-05-27 12:00 |
08:18:21.15 |
-86:30:42.2 |
HIP 40514 |
3.32 |
| 2026-05-28 00:00 |
08:18:51.66 |
-86:29:59.7 |
HIP 40514 |
4.17 |
| 2026-05-28 12:00 |
08:19:22.36 |
-86:29:17.4 |
HIP 40514 |
5.01 |
| 2026-05-29 00:00 |
08:19:53.25 |
-86:28:35.2 |
HIP 40514 |
5.86 |
| 2026-05-29 12:00 |
08:20:24.31 |
-86:27:53.2 |
HIP 40951 |
5.36 |
| 2026-05-30 00:00 |
08:20:55.56 |
-86:27:11.4 |
HIP 40951 |
4.60 |
| 2026-05-30 12:00 |
08:21:26.99 |
-86:26:29.7 |
HIP 40951 |
3.88 |
| 2026-05-31 00:00 |
08:21:58.59 |
-86:25:48.3 |
HIP 40951 |
3.23 |
| 2026-05-31 12:00 |
08:22:30.37 |
-86:25:06.9 |
HIP 40951 |
2.69 |
| 2026-06-01 00:00 |
08:23:02.31 |
-86:24:25.8 |
HIP 40951 |
2.35 |
| 2026-06-01 12:00 |
08:23:34.42 |
-86:23:44.8 |
HIP 40951 |
2.30 |
| 2026-06-02 00:00 |
08:24:06.69 |
-86:23:04.0 |
HIP 40951 |
2.55 |