メタデータ
| 項目 |
値 |
| Designation |
C/1956 E1 (Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1956-04-13T14:37:14.880000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
4 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1956-04-05.0000000 |
| e |
1.00000000 |
| q (au) |
0.842240 |
| a (au) |
- |
| i (deg) |
147.451900 |
| Ω (om, deg) |
226.715900 |
| ω (w, deg) |
81.001500 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (9.975 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.975 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.938 |
| 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) |
| 2026-03-26 00:00 |
23:40:41.45 |
-35:15:10.3 |
HIP 116903 |
13.46 |
| 2026-03-26 12:00 |
23:40:42.81 |
-35:15:06.1 |
HIP 116903 |
13.17 |
| 2026-03-27 00:00 |
23:40:44.17 |
-35:15:01.9 |
HIP 116903 |
12.89 |
| 2026-03-27 12:00 |
23:40:45.53 |
-35:14:57.9 |
HIP 116903 |
12.60 |
| 2026-03-28 00:00 |
23:40:46.89 |
-35:14:54.0 |
HIP 116903 |
12.32 |
| 2026-03-28 12:00 |
23:40:48.24 |
-35:14:50.1 |
HIP 116903 |
12.03 |
| 2026-03-29 00:00 |
23:40:49.60 |
-35:14:46.4 |
HIP 116903 |
11.75 |
| 2026-03-29 12:00 |
23:40:50.94 |
-35:14:42.7 |
HIP 116903 |
11.47 |
| 2026-03-30 00:00 |
23:40:52.29 |
-35:14:39.2 |
HIP 116903 |
11.19 |
| 2026-03-30 12:00 |
23:40:53.63 |
-35:14:35.7 |
HIP 116903 |
10.91 |
| 2026-03-31 00:00 |
23:40:54.97 |
-35:14:32.3 |
HIP 116903 |
10.63 |
| 2026-03-31 12:00 |
23:40:56.31 |
-35:14:29.1 |
HIP 116903 |
10.35 |
| 2026-04-01 00:00 |
23:40:57.64 |
-35:14:25.9 |
HIP 116903 |
10.08 |
| 2026-04-01 12:00 |
23:40:58.97 |
-35:14:22.8 |
HIP 116903 |
9.80 |
| 2026-04-02 00:00 |
23:41:00.30 |
-35:14:19.9 |
HIP 116903 |
9.53 |
| 2026-04-02 12:00 |
23:41:01.63 |
-35:14:17.0 |
HIP 116903 |
9.25 |
| 2026-04-03 00:00 |
23:41:02.95 |
-35:14:14.2 |
HIP 116903 |
8.98 |
| 2026-04-03 12:00 |
23:41:04.26 |
-35:14:11.5 |
HIP 116903 |
8.71 |
| 2026-04-04 00:00 |
23:41:05.57 |
-35:14:09.0 |
HIP 116903 |
8.43 |
| 2026-04-04 12:00 |
23:41:06.88 |
-35:14:06.5 |
HIP 116903 |
8.16 |
| 2026-04-05 00:00 |
23:41:08.19 |
-35:14:04.1 |
HIP 116903 |
7.89 |
| 2026-04-05 12:00 |
23:41:09.49 |
-35:14:01.8 |
HIP 116903 |
7.63 |
| 2026-04-06 00:00 |
23:41:10.79 |
-35:13:59.6 |
HIP 116903 |
7.36 |
| 2026-04-06 12:00 |
23:41:12.08 |
-35:13:57.6 |
HIP 116903 |
7.09 |
| 2026-04-07 00:00 |
23:41:13.37 |
-35:13:55.6 |
HIP 116903 |
6.83 |
| 2026-04-07 12:00 |
23:41:14.65 |
-35:13:53.7 |
HIP 116903 |
6.56 |
| 2026-04-08 00:00 |
23:41:15.93 |
-35:13:51.9 |
HIP 116903 |
6.30 |
| 2026-04-08 12:00 |
23:41:17.20 |
-35:13:50.2 |
HIP 116903 |
6.04 |
| 2026-04-09 00:00 |
23:41:18.48 |
-35:13:48.7 |
HIP 116903 |
5.78 |
| 2026-04-09 12:00 |
23:41:19.74 |
-35:13:47.2 |
HIP 116903 |
5.52 |
| 2026-04-10 00:00 |
23:41:21.00 |
-35:13:45.8 |
HIP 116903 |
5.26 |
| 2026-04-10 12:00 |
23:41:22.26 |
-35:13:44.5 |
HIP 116903 |
5.00 |
| 2026-04-11 00:00 |
23:41:23.51 |
-35:13:43.3 |
HIP 116903 |
4.75 |
| 2026-04-11 12:00 |
23:41:24.75 |
-35:13:42.3 |
HIP 116903 |
4.49 |
| 2026-04-12 00:00 |
23:41:25.99 |
-35:13:41.3 |
HIP 116903 |
4.24 |
| 2026-04-12 12:00 |
23:41:27.23 |
-35:13:40.4 |
HIP 116903 |
3.99 |
| 2026-04-13 00:00 |
23:41:28.46 |
-35:13:39.6 |
HIP 116903 |
3.74 |
| 2026-04-13 12:00 |
23:41:29.68 |
-35:13:38.9 |
HIP 116903 |
3.49 |
| 2026-04-14 00:00 |
23:41:30.90 |
-35:13:38.4 |
HIP 116903 |
3.24 |
| 2026-04-14 12:00 |
23:41:32.12 |
-35:13:37.9 |
HIP 116903 |
3.00 |
| 2026-04-15 00:00 |
23:41:33.32 |
-35:13:37.5 |
HIP 116903 |
2.76 |
| 2026-04-15 12:00 |
23:41:34.53 |
-35:13:37.3 |
HIP 116903 |
2.52 |
| 2026-04-16 00:00 |
23:41:35.72 |
-35:13:37.1 |
HIP 116903 |
2.28 |