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) |
| 2026-09-20 00:00 |
08:48:04.30 |
-24:10:40.9 |
HIP 43173 |
14.24 |
| 2026-09-20 12:00 |
08:48:05.27 |
-24:10:53.7 |
HIP 43173 |
14.14 |
| 2026-09-21 00:00 |
08:48:06.24 |
-24:11:06.6 |
HIP 43173 |
14.05 |
| 2026-09-21 12:00 |
08:48:07.19 |
-24:11:19.5 |
HIP 43173 |
13.96 |
| 2026-09-22 00:00 |
08:48:08.14 |
-24:11:32.5 |
HIP 43173 |
13.87 |
| 2026-09-22 12:00 |
08:48:09.07 |
-24:11:45.5 |
HIP 43173 |
13.79 |
| 2026-09-23 00:00 |
08:48:10.00 |
-24:11:58.5 |
HIP 43173 |
13.72 |
| 2026-09-23 12:00 |
08:48:10.92 |
-24:12:11.6 |
HIP 43173 |
13.64 |
| 2026-09-24 00:00 |
08:48:11.82 |
-24:12:24.8 |
HIP 43173 |
13.58 |
| 2026-09-24 12:00 |
08:48:12.72 |
-24:12:38.0 |
HIP 43173 |
13.51 |
| 2026-09-25 00:00 |
08:48:13.61 |
-24:12:51.3 |
HIP 43173 |
13.45 |
| 2026-09-25 12:00 |
08:48:14.48 |
-24:13:04.6 |
HIP 43173 |
13.40 |
| 2026-09-26 00:00 |
08:48:15.35 |
-24:13:17.9 |
HIP 43173 |
13.35 |
| 2026-09-26 12:00 |
08:48:16.21 |
-24:13:31.3 |
HIP 43173 |
13.30 |
| 2026-09-27 00:00 |
08:48:17.06 |
-24:13:44.7 |
HIP 43173 |
13.26 |
| 2026-09-27 12:00 |
08:48:17.90 |
-24:13:58.2 |
HIP 43173 |
13.23 |
| 2026-09-28 00:00 |
08:48:18.72 |
-24:14:11.7 |
HIP 43173 |
13.19 |
| 2026-09-28 12:00 |
08:48:19.54 |
-24:14:25.3 |
HIP 43173 |
13.17 |
| 2026-09-29 00:00 |
08:48:20.35 |
-24:14:38.9 |
HIP 43173 |
13.14 |
| 2026-09-29 12:00 |
08:48:21.15 |
-24:14:52.5 |
HIP 43173 |
13.12 |
| 2026-09-30 00:00 |
08:48:21.93 |
-24:15:06.2 |
HIP 43173 |
13.11 |
| 2026-09-30 12:00 |
08:48:22.71 |
-24:15:19.9 |
HIP 43173 |
13.10 |
| 2026-10-01 00:00 |
08:48:23.48 |
-24:15:33.7 |
HIP 43173 |
13.09 |
| 2026-10-01 12:00 |
08:48:24.23 |
-24:15:47.5 |
HIP 43173 |
13.09 |
| 2026-10-02 00:00 |
08:48:24.97 |
-24:16:01.3 |
HIP 43173 |
13.09 |
| 2026-10-02 12:00 |
08:48:25.71 |
-24:16:15.1 |
HIP 43173 |
13.09 |
| 2026-10-03 00:00 |
08:48:26.43 |
-24:16:29.0 |
HIP 43173 |
13.10 |
| 2026-10-03 12:00 |
08:48:27.14 |
-24:16:42.9 |
HIP 43173 |
13.12 |
| 2026-10-04 00:00 |
08:48:27.85 |
-24:16:56.9 |
HIP 43173 |
13.13 |
| 2026-10-04 12:00 |
08:48:28.54 |
-24:17:10.9 |
HIP 43173 |
13.15 |
| 2026-10-05 00:00 |
08:48:29.22 |
-24:17:24.9 |
HIP 43173 |
13.17 |
| 2026-10-05 12:00 |
08:48:29.88 |
-24:17:38.9 |
HIP 43173 |
13.20 |
| 2026-10-06 00:00 |
08:48:30.54 |
-24:17:53.0 |
HIP 43173 |
13.23 |
| 2026-10-06 12:00 |
08:48:31.19 |
-24:18:07.1 |
HIP 43173 |
13.27 |
| 2026-10-07 00:00 |
08:48:31.82 |
-24:18:21.2 |
HIP 43173 |
13.30 |
| 2026-10-07 12:00 |
08:48:32.45 |
-24:18:35.3 |
HIP 43173 |
13.34 |
| 2026-10-08 00:00 |
08:48:33.06 |
-24:18:49.5 |
HIP 43173 |
13.38 |
| 2026-10-08 12:00 |
08:48:33.66 |
-24:19:03.7 |
HIP 43173 |
13.43 |
| 2026-10-09 00:00 |
08:48:34.25 |
-24:19:17.9 |
HIP 43173 |
13.48 |
| 2026-10-09 12:00 |
08:48:34.82 |
-24:19:32.1 |
HIP 43173 |
13.53 |
| 2026-10-10 00:00 |
08:48:35.39 |
-24:19:46.4 |
HIP 43173 |
13.58 |
| 2026-10-10 12:00 |
08:48:35.94 |
-24:20:00.6 |
HIP 43173 |
13.64 |
| 2026-10-11 00:00 |
08:48:36.49 |
-24:20:14.9 |
HIP 43173 |
13.70 |