メタデータ
| 項目 |
値 |
| Designation |
C/1953 G1 (Mrkos-Honda) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1953-05-26T10:29:28.317120Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:12Z |
| Obs used |
7 |
| 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) |
1953-07-09.0000000 |
| e |
0.99746509 |
| q (au) |
1.022127 |
| a (au) |
403.221047 |
| i (deg) |
93.856976 |
| Ω (om, deg) |
275.885480 |
| ω (w, deg) |
85.742269 |
| M (ma, deg) |
0.005303 |
等級
散乱 + 全体線形
$$
M_a = (7.774 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.774 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.544 |
| k |
0.800 |
| δ90 |
1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1953-04-14 |
1953-05-25 |
+53.5483 |
-1.301 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
05:50:01.85 |
-50:40:55.9 |
HIP 27622 |
8.34 |
| 2026-09-20 12:00 |
05:50:01.83 |
-50:41:14.2 |
HIP 27622 |
8.29 |
| 2026-09-21 00:00 |
05:50:01.81 |
-50:41:32.4 |
HIP 27622 |
8.25 |
| 2026-09-21 12:00 |
05:50:01.76 |
-50:41:50.7 |
HIP 27622 |
8.23 |
| 2026-09-22 00:00 |
05:50:01.70 |
-50:42:09.0 |
HIP 27622 |
8.22 |
| 2026-09-22 12:00 |
05:50:01.62 |
-50:42:27.3 |
HIP 27622 |
8.22 |
| 2026-09-23 00:00 |
05:50:01.52 |
-50:42:45.6 |
HIP 27622 |
8.24 |
| 2026-09-23 12:00 |
05:50:01.41 |
-50:43:03.8 |
HIP 27622 |
8.27 |
| 2026-09-24 00:00 |
05:50:01.28 |
-50:43:22.1 |
HIP 27622 |
8.31 |
| 2026-09-24 12:00 |
05:50:01.13 |
-50:43:40.4 |
HIP 27622 |
8.37 |
| 2026-09-25 00:00 |
05:50:00.97 |
-50:43:58.6 |
HIP 27622 |
8.45 |
| 2026-09-25 12:00 |
05:50:00.79 |
-50:44:16.8 |
HIP 27622 |
8.53 |
| 2026-09-26 00:00 |
05:50:00.59 |
-50:44:35.1 |
HIP 27622 |
8.63 |
| 2026-09-26 12:00 |
05:50:00.37 |
-50:44:53.3 |
HIP 27622 |
8.74 |
| 2026-09-27 00:00 |
05:50:00.14 |
-50:45:11.5 |
HIP 27558 |
8.64 |
| 2026-09-27 12:00 |
05:49:59.89 |
-50:45:29.7 |
HIP 27558 |
8.35 |
| 2026-09-28 00:00 |
05:49:59.63 |
-50:45:47.9 |
HIP 27558 |
8.06 |
| 2026-09-28 12:00 |
05:49:59.35 |
-50:46:06.0 |
HIP 27558 |
7.78 |
| 2026-09-29 00:00 |
05:49:59.05 |
-50:46:24.2 |
HIP 27558 |
7.50 |
| 2026-09-29 12:00 |
05:49:58.73 |
-50:46:42.3 |
HIP 27558 |
7.22 |
| 2026-09-30 00:00 |
05:49:58.40 |
-50:47:00.4 |
HIP 27558 |
6.95 |
| 2026-09-30 12:00 |
05:49:58.05 |
-50:47:18.5 |
HIP 27558 |
6.68 |
| 2026-10-01 00:00 |
05:49:57.69 |
-50:47:36.5 |
HIP 27558 |
6.41 |
| 2026-10-01 12:00 |
05:49:57.30 |
-50:47:54.6 |
HIP 27558 |
6.15 |
| 2026-10-02 00:00 |
05:49:56.90 |
-50:48:12.6 |
HIP 27558 |
5.89 |
| 2026-10-02 12:00 |
05:49:56.49 |
-50:48:30.5 |
HIP 27558 |
5.64 |
| 2026-10-03 00:00 |
05:49:56.06 |
-50:48:48.5 |
HIP 27558 |
5.40 |
| 2026-10-03 12:00 |
05:49:55.61 |
-50:49:06.4 |
HIP 27558 |
5.17 |
| 2026-10-04 00:00 |
05:49:55.14 |
-50:49:24.3 |
HIP 27558 |
4.95 |
| 2026-10-04 12:00 |
05:49:54.66 |
-50:49:42.2 |
HIP 27558 |
4.74 |
| 2026-10-05 00:00 |
05:49:54.16 |
-50:50:00.0 |
HIP 27558 |
4.54 |
| 2026-10-05 12:00 |
05:49:53.64 |
-50:50:17.8 |
HIP 27558 |
4.36 |
| 2026-10-06 00:00 |
05:49:53.11 |
-50:50:35.5 |
HIP 27558 |
4.19 |
| 2026-10-06 12:00 |
05:49:52.55 |
-50:50:53.2 |
HIP 27558 |
4.04 |
| 2026-10-07 00:00 |
05:49:51.99 |
-50:51:10.9 |
HIP 27558 |
3.92 |
| 2026-10-07 12:00 |
05:49:51.40 |
-50:51:28.5 |
HIP 27558 |
3.82 |
| 2026-10-08 00:00 |
05:49:50.80 |
-50:51:46.1 |
HIP 27558 |
3.74 |
| 2026-10-08 12:00 |
05:49:50.19 |
-50:52:03.7 |
HIP 27558 |
3.69 |
| 2026-10-09 00:00 |
05:49:49.55 |
-50:52:21.2 |
HIP 27558 |
3.66 |
| 2026-10-09 12:00 |
05:49:48.90 |
-50:52:38.6 |
HIP 27558 |
3.67 |
| 2026-10-10 00:00 |
05:49:48.24 |
-50:52:56.1 |
HIP 27558 |
3.70 |
| 2026-10-10 12:00 |
05:49:47.55 |
-50:53:13.4 |
HIP 27558 |
3.77 |
| 2026-10-11 00:00 |
05:49:46.85 |
-50:53:30.7 |
HIP 27558 |
3.86 |