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) |
| 2026-07-29 00:00 |
22:23:52.68 |
-50:00:42.0 |
HIP 110587 |
8.59 |
| 2026-07-29 12:00 |
22:23:46.88 |
-50:01:23.8 |
HIP 110587 |
9.61 |
| 2026-07-30 00:00 |
22:23:41.05 |
-50:02:05.4 |
HIP 110587 |
10.66 |
| 2026-07-30 12:00 |
22:23:35.19 |
-50:02:46.6 |
HIP 110587 |
11.72 |
| 2026-07-31 00:00 |
22:23:29.31 |
-50:03:27.6 |
HIP 110587 |
12.81 |
| 2026-07-31 12:00 |
22:23:23.40 |
-50:04:08.4 |
HIP 110587 |
13.90 |
| 2026-08-01 00:00 |
22:23:17.46 |
-50:04:48.9 |
HIP 110587 |
15.01 |
| 2026-08-01 12:00 |
22:23:11.50 |
-50:05:29.0 |
HIP 110587 |
16.12 |
| 2026-08-02 00:00 |
22:23:05.51 |
-50:06:08.9 |
HIP 110587 |
17.24 |
| 2026-08-02 12:00 |
22:22:59.50 |
-50:06:48.6 |
HIP 110587 |
18.37 |
| 2026-08-03 00:00 |
22:22:53.47 |
-50:07:27.9 |
HIP 110587 |
19.50 |
| 2026-08-03 12:00 |
22:22:47.41 |
-50:08:07.0 |
HIP 110587 |
20.63 |
| 2026-08-04 00:00 |
22:22:41.33 |
-50:08:45.7 |
HIP 110558 |
20.75 |
| 2026-08-04 12:00 |
22:22:35.22 |
-50:09:24.2 |
HIP 110558 |
20.73 |
| 2026-08-05 00:00 |
22:22:29.09 |
-50:10:02.4 |
HIP 110558 |
20.78 |
| 2026-08-05 12:00 |
22:22:22.94 |
-50:10:40.2 |
HIP 110558 |
20.91 |
| 2026-08-06 00:00 |
22:22:16.77 |
-50:11:17.8 |
HIP 110558 |
21.10 |
| 2026-08-06 12:00 |
22:22:10.58 |
-50:11:55.1 |
HIP 110558 |
21.36 |
| 2026-08-07 00:00 |
22:22:04.37 |
-50:12:32.0 |
HIP 110558 |
21.69 |
| 2026-08-07 12:00 |
22:21:58.14 |
-50:13:08.6 |
HIP 110558 |
22.08 |
| 2026-08-08 00:00 |
22:21:51.88 |
-50:13:45.0 |
HIP 110558 |
22.53 |
| 2026-08-08 12:00 |
22:21:45.61 |
-50:14:21.0 |
HIP 110558 |
23.03 |
| 2026-08-09 00:00 |
22:21:39.32 |
-50:14:56.7 |
HIP 110558 |
23.59 |
| 2026-08-09 12:00 |
22:21:33.01 |
-50:15:32.0 |
HIP 110558 |
24.19 |
| 2026-08-10 00:00 |
22:21:26.69 |
-50:16:07.1 |
HIP 110558 |
24.84 |
| 2026-08-10 12:00 |
22:21:20.35 |
-50:16:41.8 |
HIP 110558 |
25.53 |
| 2026-08-11 00:00 |
22:21:13.99 |
-50:17:16.2 |
HIP 110558 |
26.26 |
| 2026-08-11 12:00 |
22:21:07.61 |
-50:17:50.2 |
HIP 110558 |
27.02 |
| 2026-08-12 00:00 |
22:21:01.22 |
-50:18:24.0 |
HIP 110558 |
27.81 |
| 2026-08-12 12:00 |
22:20:54.82 |
-50:18:57.3 |
HIP 110558 |
28.64 |
| 2026-08-13 00:00 |
22:20:48.40 |
-50:19:30.4 |
HIP 110303 |
28.46 |
| 2026-08-13 12:00 |
22:20:41.96 |
-50:20:03.1 |
HIP 110074 |
27.82 |
| 2026-08-14 00:00 |
22:20:35.51 |
-50:20:35.4 |
HIP 110074 |
26.80 |
| 2026-08-14 12:00 |
22:20:29.06 |
-50:21:07.4 |
HIP 110074 |
25.80 |
| 2026-08-15 00:00 |
22:20:22.58 |
-50:21:39.0 |
HIP 110074 |
24.81 |
| 2026-08-15 12:00 |
22:20:16.10 |
-50:22:10.3 |
HIP 110074 |
23.83 |
| 2026-08-16 00:00 |
22:20:09.61 |
-50:22:41.3 |
HIP 110074 |
22.86 |
| 2026-08-16 12:00 |
22:20:03.10 |
-50:23:11.9 |
HIP 110074 |
21.91 |
| 2026-08-17 00:00 |
22:19:56.59 |
-50:23:42.1 |
HIP 110074 |
20.98 |
| 2026-08-17 12:00 |
22:19:50.06 |
-50:24:11.9 |
HIP 110074 |
20.08 |
| 2026-08-18 00:00 |
22:19:43.53 |
-50:24:41.4 |
HIP 110074 |
19.19 |
| 2026-08-18 12:00 |
22:19:36.99 |
-50:25:10.6 |
HIP 110074 |
18.33 |
| 2026-08-19 00:00 |
22:19:30.44 |
-50:25:39.3 |
HIP 110074 |
17.50 |