メタデータ
| 項目 |
値 |
| Designation |
C/1955 L1 (Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1955-06-04T03:57:09.207360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
21 |
| 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) |
1955-07-14.0000000 |
| e |
0.98921350 |
| q (au) |
0.534369 |
| a (au) |
49.540478 |
| i (deg) |
86.503010 |
| Ω (om, deg) |
48.941547 |
| ω (w, deg) |
32.506239 |
| M (ma, deg) |
0.112598 |
等級
散乱 + 全体線形
$$
M_a = (6.847 + 4.080\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.847 |
| n |
4.080 |
| gf |
1.000 |
| gb |
-0.565 |
| k |
0.800 |
| 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 |
14:31:11.63 |
-44:44:59.0 |
HIP 71023 |
3.87 |
| 2026-06-01 12:00 |
14:31:09.78 |
-44:44:47.8 |
HIP 71023 |
4.20 |
| 2026-06-02 00:00 |
14:31:07.93 |
-44:44:36.5 |
HIP 71023 |
4.54 |
| 2026-06-02 12:00 |
14:31:06.09 |
-44:44:25.2 |
HIP 71023 |
4.89 |
| 2026-06-03 00:00 |
14:31:04.27 |
-44:44:13.8 |
HIP 71023 |
5.24 |
| 2026-06-03 12:00 |
14:31:02.45 |
-44:44:02.3 |
HIP 71023 |
5.59 |
| 2026-06-04 00:00 |
14:31:00.64 |
-44:43:50.8 |
HIP 71023 |
5.94 |
| 2026-06-04 12:00 |
14:30:58.84 |
-44:43:39.2 |
HIP 71023 |
6.29 |
| 2026-06-05 00:00 |
14:30:57.06 |
-44:43:27.6 |
HIP 71023 |
6.64 |
| 2026-06-05 12:00 |
14:30:55.28 |
-44:43:15.9 |
HIP 71023 |
7.00 |
| 2026-06-06 00:00 |
14:30:53.51 |
-44:43:04.2 |
HIP 71023 |
7.35 |
| 2026-06-06 12:00 |
14:30:51.76 |
-44:42:52.4 |
HIP 71023 |
7.71 |
| 2026-06-07 00:00 |
14:30:50.01 |
-44:42:40.5 |
HIP 71023 |
8.06 |
| 2026-06-07 12:00 |
14:30:48.28 |
-44:42:28.7 |
HIP 71023 |
8.41 |
| 2026-06-08 00:00 |
14:30:46.55 |
-44:42:16.7 |
HIP 71023 |
8.77 |
| 2026-06-08 12:00 |
14:30:44.84 |
-44:42:04.7 |
HIP 71023 |
9.12 |
| 2026-06-09 00:00 |
14:30:43.14 |
-44:41:52.7 |
HIP 71023 |
9.47 |
| 2026-06-09 12:00 |
14:30:41.45 |
-44:41:40.6 |
HIP 71023 |
9.82 |
| 2026-06-10 00:00 |
14:30:39.77 |
-44:41:28.5 |
HIP 71023 |
10.17 |
| 2026-06-10 12:00 |
14:30:38.10 |
-44:41:16.3 |
HIP 71023 |
10.52 |
| 2026-06-11 00:00 |
14:30:36.45 |
-44:41:04.1 |
HIP 71023 |
10.87 |
| 2026-06-11 12:00 |
14:30:34.80 |
-44:40:51.8 |
HIP 71023 |
11.21 |
| 2026-06-12 00:00 |
14:30:33.17 |
-44:40:39.5 |
HIP 71023 |
11.56 |
| 2026-06-12 12:00 |
14:30:31.55 |
-44:40:27.2 |
HIP 71023 |
11.91 |
| 2026-06-13 00:00 |
14:30:29.94 |
-44:40:14.8 |
HIP 71023 |
12.25 |
| 2026-06-13 12:00 |
14:30:28.35 |
-44:40:02.4 |
HIP 71023 |
12.59 |
| 2026-06-14 00:00 |
14:30:26.77 |
-44:39:49.9 |
HIP 71023 |
12.93 |
| 2026-06-14 12:00 |
14:30:25.20 |
-44:39:37.4 |
HIP 71023 |
13.27 |
| 2026-06-15 00:00 |
14:30:23.64 |
-44:39:24.9 |
HIP 71023 |
13.61 |
| 2026-06-15 12:00 |
14:30:22.09 |
-44:39:12.3 |
HIP 71023 |
13.95 |
| 2026-06-16 00:00 |
14:30:20.56 |
-44:38:59.8 |
HIP 71023 |
14.28 |
| 2026-06-16 12:00 |
14:30:19.04 |
-44:38:47.1 |
HIP 71023 |
14.62 |
| 2026-06-17 00:00 |
14:30:17.54 |
-44:38:34.5 |
HIP 71023 |
14.95 |
| 2026-06-17 12:00 |
14:30:16.05 |
-44:38:21.8 |
HIP 71023 |
15.28 |
| 2026-06-18 00:00 |
14:30:14.57 |
-44:38:09.0 |
HIP 71023 |
15.61 |
| 2026-06-18 12:00 |
14:30:13.10 |
-44:37:56.3 |
HIP 71023 |
15.94 |
| 2026-06-19 00:00 |
14:30:11.65 |
-44:37:43.5 |
HIP 71023 |
16.26 |
| 2026-06-19 12:00 |
14:30:10.21 |
-44:37:30.7 |
HIP 71023 |
16.59 |
| 2026-06-20 00:00 |
14:30:08.79 |
-44:37:17.9 |
HIP 71023 |
16.91 |
| 2026-06-20 12:00 |
14:30:07.38 |
-44:37:05.0 |
HIP 71023 |
17.23 |
| 2026-06-21 00:00 |
14:30:05.98 |
-44:36:52.2 |
HIP 71023 |
17.55 |
| 2026-06-21 12:00 |
14:30:04.60 |
-44:36:39.3 |
HIP 71023 |
17.87 |
| 2026-06-22 00:00 |
14:30:03.23 |
-44:36:26.4 |
HIP 71023 |
18.19 |