メタデータ
| 項目 |
値 |
| Designation |
C/2011 J2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-12-25T07:20:37.112640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:49Z |
| Obs used |
6434 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
7.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-01-22.0000000 |
| e |
1.00050456 |
| q (au) |
3.443446 |
| a (au) |
-6824.670055 |
| i (deg) |
122.798823 |
| Ω (om, deg) |
163.947568 |
| ω (w, deg) |
85.296082 |
| M (ma, deg) |
0.000048 |
等級
散乱 + 全体線形
$$
M_a = (8.869 + 2.029\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.869 |
| n |
2.029 |
| gf |
1.000 |
| gb |
-0.970 |
| 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 |
| 2011-03-10 |
2013-12-24 |
+0.7312 |
-0.692 |
| 2013-12-26 |
2014-08-07 |
+5.5794 |
-3.398 |
| 2014-08-07 |
2017-09-15 |
-0.6811 |
+0.668 |
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) |
| 2026-03-26 00:00 |
22:24:56.41 |
-47:14:51.7 |
HIP 110748 |
12.80 |
| 2026-03-26 12:00 |
22:25:01.37 |
-47:15:01.6 |
HIP 110748 |
11.95 |
| 2026-03-27 00:00 |
22:25:06.30 |
-47:15:11.9 |
HIP 110748 |
11.10 |
| 2026-03-27 12:00 |
22:25:11.21 |
-47:15:22.5 |
HIP 110748 |
10.26 |
| 2026-03-28 00:00 |
22:25:16.09 |
-47:15:33.5 |
HIP 110748 |
9.43 |
| 2026-03-28 12:00 |
22:25:20.94 |
-47:15:44.9 |
HIP 110748 |
8.60 |
| 2026-03-29 00:00 |
22:25:25.77 |
-47:15:56.6 |
HIP 110748 |
7.78 |
| 2026-03-29 12:00 |
22:25:30.58 |
-47:16:08.7 |
HIP 110748 |
6.98 |
| 2026-03-30 00:00 |
22:25:35.35 |
-47:16:21.1 |
HIP 110748 |
6.18 |
| 2026-03-30 12:00 |
22:25:40.10 |
-47:16:33.9 |
HIP 110748 |
5.41 |
| 2026-03-31 00:00 |
22:25:44.82 |
-47:16:47.1 |
HIP 110748 |
4.66 |
| 2026-03-31 12:00 |
22:25:49.52 |
-47:17:00.6 |
HIP 110748 |
3.94 |
| 2026-04-01 00:00 |
22:25:54.18 |
-47:17:14.5 |
HIP 110748 |
3.29 |
| 2026-04-01 12:00 |
22:25:58.82 |
-47:17:28.8 |
HIP 110748 |
2.75 |
| 2026-04-02 00:00 |
22:26:03.43 |
-47:17:43.4 |
HIP 110748 |
2.37 |
| 2026-04-02 12:00 |
22:26:08.01 |
-47:17:58.3 |
HIP 110748 |
2.26 |
| 2026-04-03 00:00 |
22:26:12.56 |
-47:18:13.7 |
HIP 110748 |
2.43 |
| 2026-04-03 12:00 |
22:26:17.08 |
-47:18:29.3 |
HIP 110748 |
2.84 |
| 2026-04-04 00:00 |
22:26:21.58 |
-47:18:45.4 |
HIP 110748 |
3.40 |
| 2026-04-04 12:00 |
22:26:26.04 |
-47:19:01.8 |
HIP 110748 |
4.05 |
| 2026-04-05 00:00 |
22:26:30.47 |
-47:19:18.5 |
HIP 110748 |
4.74 |
| 2026-04-05 12:00 |
22:26:34.87 |
-47:19:35.6 |
HIP 110748 |
5.47 |
| 2026-04-06 00:00 |
22:26:39.24 |
-47:19:53.1 |
HIP 110748 |
6.21 |
| 2026-04-06 12:00 |
22:26:43.58 |
-47:20:10.9 |
HIP 110748 |
6.96 |
| 2026-04-07 00:00 |
22:26:47.89 |
-47:20:29.1 |
HIP 110748 |
7.73 |
| 2026-04-07 12:00 |
22:26:52.16 |
-47:20:47.6 |
HIP 110748 |
8.49 |
| 2026-04-08 00:00 |
22:26:56.40 |
-47:21:06.5 |
HIP 110748 |
9.26 |
| 2026-04-08 12:00 |
22:27:00.61 |
-47:21:25.7 |
HIP 110748 |
10.03 |
| 2026-04-09 00:00 |
22:27:04.79 |
-47:21:45.3 |
HIP 110748 |
10.80 |
| 2026-04-09 12:00 |
22:27:08.94 |
-47:22:05.3 |
HIP 110748 |
11.57 |
| 2026-04-10 00:00 |
22:27:13.05 |
-47:22:25.5 |
HIP 110748 |
12.34 |
| 2026-04-10 12:00 |
22:27:17.12 |
-47:22:46.2 |
HIP 110748 |
13.10 |
| 2026-04-11 00:00 |
22:27:21.17 |
-47:23:07.2 |
HIP 110748 |
13.87 |
| 2026-04-11 12:00 |
22:27:25.18 |
-47:23:28.5 |
HIP 110748 |
14.63 |
| 2026-04-12 00:00 |
22:27:29.15 |
-47:23:50.2 |
HIP 110748 |
15.40 |
| 2026-04-12 12:00 |
22:27:33.09 |
-47:24:12.3 |
HIP 110748 |
16.16 |
| 2026-04-13 00:00 |
22:27:37.00 |
-47:24:34.7 |
HIP 110748 |
16.92 |
| 2026-04-13 12:00 |
22:27:40.86 |
-47:24:57.4 |
HIP 110748 |
17.67 |
| 2026-04-14 00:00 |
22:27:44.70 |
-47:25:20.5 |
HIP 110748 |
18.43 |
| 2026-04-14 12:00 |
22:27:48.49 |
-47:25:44.0 |
HIP 110748 |
19.18 |
| 2026-04-15 00:00 |
22:27:52.25 |
-47:26:07.8 |
HIP 110748 |
19.93 |
| 2026-04-15 12:00 |
22:27:55.98 |
-47:26:31.9 |
HIP 110748 |
20.67 |
| 2026-04-16 00:00 |
22:27:59.66 |
-47:26:56.4 |
HIP 110748 |
21.42 |