メタデータ
| 項目 |
値 |
| Designation |
C/1952 H1 (Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1952-06-08T17:20:59.570880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
60 |
| NEO |
- |
| M1 |
5.500 |
| K1 |
37.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1952-07-02.0000000 |
| e |
0.98344799 |
| q (au) |
1.282807 |
| a (au) |
77.501590 |
| i (deg) |
112.034543 |
| Ω (om, deg) |
122.356189 |
| ω (w, deg) |
144.900038 |
| M (ma, deg) |
0.033625 |
等級
散乱 + 全体線形
$$
M_a = (7.291 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.291 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.552 |
| k |
1.000 |
| δ90 |
9.999 |
| 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 |
08:43:27.57 |
-24:03:25.9 |
HIP 42736 |
15.50 |
| 2026-06-01 12:00 |
08:43:28.33 |
-24:03:15.7 |
HIP 42736 |
15.74 |
| 2026-06-02 00:00 |
08:43:29.10 |
-24:03:05.5 |
HIP 42736 |
15.98 |
| 2026-06-02 12:00 |
08:43:29.89 |
-24:02:55.5 |
HIP 42736 |
16.23 |
| 2026-06-03 00:00 |
08:43:30.68 |
-24:02:45.6 |
HIP 42736 |
16.47 |
| 2026-06-03 12:00 |
08:43:31.48 |
-24:02:35.7 |
HIP 42736 |
16.72 |
| 2026-06-04 00:00 |
08:43:32.30 |
-24:02:26.0 |
HIP 42736 |
16.96 |
| 2026-06-04 12:00 |
08:43:33.12 |
-24:02:16.3 |
HIP 42736 |
17.21 |
| 2026-06-05 00:00 |
08:43:33.96 |
-24:02:06.7 |
HIP 42736 |
17.46 |
| 2026-06-05 12:00 |
08:43:34.80 |
-24:01:57.3 |
HIP 42736 |
17.71 |
| 2026-06-06 00:00 |
08:43:35.65 |
-24:01:47.9 |
HIP 42736 |
17.96 |
| 2026-06-06 12:00 |
08:43:36.52 |
-24:01:38.6 |
HIP 42736 |
18.21 |
| 2026-06-07 00:00 |
08:43:37.39 |
-24:01:29.5 |
HIP 42736 |
18.46 |
| 2026-06-07 12:00 |
08:43:38.27 |
-24:01:20.4 |
HIP 42736 |
18.71 |
| 2026-06-08 00:00 |
08:43:39.17 |
-24:01:11.4 |
HIP 42736 |
18.96 |
| 2026-06-08 12:00 |
08:43:40.07 |
-24:01:02.6 |
HIP 42736 |
19.22 |
| 2026-06-09 00:00 |
08:43:40.98 |
-24:00:53.8 |
HIP 42912 |
19.39 |
| 2026-06-09 12:00 |
08:43:41.90 |
-24:00:45.1 |
HIP 42912 |
19.14 |
| 2026-06-10 00:00 |
08:43:42.83 |
-24:00:36.6 |
HIP 42912 |
18.89 |
| 2026-06-10 12:00 |
08:43:43.77 |
-24:00:28.1 |
HIP 42912 |
18.63 |
| 2026-06-11 00:00 |
08:43:44.72 |
-24:00:19.8 |
HIP 42912 |
18.38 |
| 2026-06-11 12:00 |
08:43:45.68 |
-24:00:11.5 |
HIP 42912 |
18.13 |
| 2026-06-12 00:00 |
08:43:46.65 |
-24:00:03.4 |
HIP 42912 |
17.88 |
| 2026-06-12 12:00 |
08:43:47.63 |
-23:59:55.3 |
HIP 42912 |
17.63 |
| 2026-06-13 00:00 |
08:43:48.61 |
-23:59:47.4 |
HIP 42912 |
17.37 |
| 2026-06-13 12:00 |
08:43:49.61 |
-23:59:39.6 |
HIP 42912 |
17.12 |
| 2026-06-14 00:00 |
08:43:50.61 |
-23:59:31.9 |
HIP 42912 |
16.87 |
| 2026-06-14 12:00 |
08:43:51.62 |
-23:59:24.3 |
HIP 42912 |
16.62 |
| 2026-06-15 00:00 |
08:43:52.64 |
-23:59:16.7 |
HIP 42912 |
16.37 |
| 2026-06-15 12:00 |
08:43:53.67 |
-23:59:09.4 |
HIP 42912 |
16.12 |
| 2026-06-16 00:00 |
08:43:54.71 |
-23:59:02.1 |
HIP 42912 |
15.87 |
| 2026-06-16 12:00 |
08:43:55.76 |
-23:58:54.9 |
HIP 42912 |
15.62 |
| 2026-06-17 00:00 |
08:43:56.81 |
-23:58:47.8 |
HIP 42912 |
15.37 |
| 2026-06-17 12:00 |
08:43:57.88 |
-23:58:40.9 |
HIP 42912 |
15.12 |
| 2026-06-18 00:00 |
08:43:58.95 |
-23:58:34.0 |
HIP 42912 |
14.88 |
| 2026-06-18 12:00 |
08:44:00.03 |
-23:58:27.3 |
HIP 42912 |
14.63 |
| 2026-06-19 00:00 |
08:44:01.12 |
-23:58:20.7 |
HIP 42912 |
14.39 |
| 2026-06-19 12:00 |
08:44:02.21 |
-23:58:14.2 |
HIP 42912 |
14.14 |
| 2026-06-20 00:00 |
08:44:03.32 |
-23:58:07.8 |
HIP 42912 |
13.90 |
| 2026-06-20 12:00 |
08:44:04.43 |
-23:58:01.5 |
HIP 42912 |
13.66 |
| 2026-06-21 00:00 |
08:44:05.55 |
-23:57:55.3 |
HIP 42912 |
13.42 |
| 2026-06-21 12:00 |
08:44:06.67 |
-23:57:49.3 |
HIP 42912 |
13.19 |
| 2026-06-22 00:00 |
08:44:07.81 |
-23:57:43.3 |
HIP 42912 |
12.95 |