メタデータ
| 項目 |
値 |
| Designation |
P/2010 E2 (Jarnac) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-04-07T22:14:05.470080Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:41Z |
| Obs used |
344 |
| NEO |
- |
| M1 |
14.400 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-04-02.0000000 |
| e |
0.72237010 |
| q (au) |
2.398733 |
| a (au) |
8.640039 |
| i (deg) |
15.437000 |
| Ω (om, deg) |
177.899371 |
| ω (w, deg) |
8.294555 |
| M (ma, deg) |
359.770001 |
等級
散乱 + 全体線形
$$
M_a = (11.468 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.468 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
01:23:55.89 |
+03:21:51.3 |
HIP 6516 |
4.68 |
| 2026-06-01 12:00 |
01:24:02.10 |
+03:22:15.4 |
HIP 6516 |
6.17 |
| 2026-06-02 00:00 |
01:24:08.26 |
+03:22:39.3 |
HIP 6516 |
7.69 |
| 2026-06-02 12:00 |
01:24:14.39 |
+03:23:02.8 |
HIP 6516 |
9.22 |
| 2026-06-03 00:00 |
01:24:20.47 |
+03:23:26.0 |
HIP 6614 |
8.86 |
| 2026-06-03 12:00 |
01:24:26.52 |
+03:23:48.8 |
HIP 6614 |
7.56 |
| 2026-06-04 00:00 |
01:24:32.52 |
+03:24:11.4 |
HIP 6614 |
6.38 |
| 2026-06-04 12:00 |
01:24:38.48 |
+03:24:33.6 |
HIP 6614 |
5.39 |
| 2026-06-05 00:00 |
01:24:44.40 |
+03:24:55.4 |
HIP 6614 |
4.70 |
| 2026-06-05 12:00 |
01:24:50.27 |
+03:25:17.0 |
HIP 6614 |
4.45 |
| 2026-06-06 00:00 |
01:24:56.10 |
+03:25:38.2 |
HIP 6614 |
4.69 |
| 2026-06-06 12:00 |
01:25:01.89 |
+03:25:59.1 |
HIP 6614 |
5.34 |
| 2026-06-07 00:00 |
01:25:07.64 |
+03:26:19.6 |
HIP 6614 |
6.27 |
| 2026-06-07 12:00 |
01:25:13.34 |
+03:26:39.8 |
HIP 6614 |
7.38 |
| 2026-06-08 00:00 |
01:25:18.99 |
+03:26:59.7 |
HIP 6614 |
8.57 |
| 2026-06-08 12:00 |
01:25:24.61 |
+03:27:19.2 |
HIP 6614 |
9.83 |
| 2026-06-09 00:00 |
01:25:30.17 |
+03:27:38.4 |
HIP 6614 |
11.11 |
| 2026-06-09 12:00 |
01:25:35.69 |
+03:27:57.3 |
HIP 6614 |
12.42 |
| 2026-06-10 00:00 |
01:25:41.17 |
+03:28:15.8 |
HIP 6614 |
13.73 |
| 2026-06-10 12:00 |
01:25:46.60 |
+03:28:33.9 |
HIP 6614 |
15.04 |
| 2026-06-11 00:00 |
01:25:51.98 |
+03:28:51.7 |
HIP 6751 |
15.71 |
| 2026-06-11 12:00 |
01:25:57.32 |
+03:29:09.2 |
HIP 6751 |
14.35 |
| 2026-06-12 00:00 |
01:26:02.60 |
+03:29:26.3 |
HIP 6751 |
13.00 |
| 2026-06-12 12:00 |
01:26:07.85 |
+03:29:43.0 |
HIP 6751 |
11.66 |
| 2026-06-13 00:00 |
01:26:13.04 |
+03:29:59.4 |
HIP 6751 |
10.33 |
| 2026-06-13 12:00 |
01:26:18.18 |
+03:30:15.4 |
HIP 6751 |
9.02 |
| 2026-06-14 00:00 |
01:26:23.28 |
+03:30:31.1 |
HIP 6751 |
7.73 |
| 2026-06-14 12:00 |
01:26:28.32 |
+03:30:46.4 |
HIP 6751 |
6.44 |
| 2026-06-15 00:00 |
01:26:33.32 |
+03:31:01.3 |
HIP 6751 |
5.17 |
| 2026-06-15 12:00 |
01:26:38.27 |
+03:31:15.9 |
HIP 6751 |
3.91 |
| 2026-06-16 00:00 |
01:26:43.16 |
+03:31:30.1 |
HIP 6751 |
2.67 |
| 2026-06-16 12:00 |
01:26:48.01 |
+03:31:44.0 |
HIP 6751 |
1.44 |
| 2026-06-17 00:00 |
01:26:52.81 |
+03:31:57.5 |
HIP 6751 |
0.26 |
| 2026-06-17 12:00 |
01:26:57.55 |
+03:32:10.6 |
HIP 6751 |
1.00 |
| 2026-06-18 00:00 |
01:27:02.25 |
+03:32:23.3 |
HIP 6751 |
2.18 |
| 2026-06-18 12:00 |
01:27:06.89 |
+03:32:35.7 |
HIP 6751 |
3.36 |
| 2026-06-19 00:00 |
01:27:11.48 |
+03:32:47.7 |
HIP 6751 |
4.52 |
| 2026-06-19 12:00 |
01:27:16.01 |
+03:32:59.3 |
HIP 6751 |
5.67 |
| 2026-06-20 00:00 |
01:27:20.50 |
+03:33:10.6 |
HIP 6751 |
6.80 |
| 2026-06-20 12:00 |
01:27:24.93 |
+03:33:21.5 |
HIP 6751 |
7.92 |
| 2026-06-21 00:00 |
01:27:29.31 |
+03:33:32.0 |
HIP 6751 |
9.03 |
| 2026-06-21 12:00 |
01:27:33.64 |
+03:33:42.1 |
HIP 6751 |
10.12 |
| 2026-06-22 00:00 |
01:27:37.91 |
+03:33:51.9 |
HIP 6751 |
11.20 |