C/1953 G1 (Mrkos-Honda)
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) |
| 2026-02-03 00:00 |
05:43:24.77 |
-51:03:06.5 |
HIP 27131 |
17.91 |
| 2026-02-03 12:00 |
05:43:23.39 |
-51:02:53.2 |
HIP 27131 |
18.04 |
| 2026-02-04 00:00 |
05:43:22.02 |
-51:02:39.9 |
HIP 27131 |
18.17 |
| 2026-02-04 12:00 |
05:43:20.67 |
-51:02:26.4 |
HIP 27131 |
18.31 |
| 2026-02-05 00:00 |
05:43:19.33 |
-51:02:12.9 |
HIP 27131 |
18.44 |
| 2026-02-05 12:00 |
05:43:18.00 |
-51:01:59.2 |
HIP 27131 |
18.58 |
| 2026-02-06 00:00 |
05:43:16.69 |
-51:01:45.5 |
HIP 27131 |
18.72 |
| 2026-02-06 12:00 |
05:43:15.39 |
-51:01:31.6 |
HIP 27131 |
18.86 |
| 2026-02-07 00:00 |
05:43:14.11 |
-51:01:17.6 |
HIP 27131 |
19.01 |
| 2026-02-07 12:00 |
05:43:12.84 |
-51:01:03.5 |
HIP 27131 |
19.15 |
| 2026-02-08 00:00 |
05:43:11.58 |
-51:00:49.4 |
HIP 27131 |
19.30 |
| 2026-02-08 12:00 |
05:43:10.34 |
-51:00:35.1 |
HIP 27131 |
19.44 |
| 2026-02-09 00:00 |
05:43:09.11 |
-51:00:20.7 |
HIP 27131 |
19.59 |
| 2026-02-09 12:00 |
05:43:07.90 |
-51:00:06.2 |
HIP 27131 |
19.74 |
| 2026-02-10 00:00 |
05:43:06.70 |
-50:59:51.7 |
HIP 27131 |
19.89 |
| 2026-02-10 12:00 |
05:43:05.52 |
-50:59:37.0 |
HIP 27131 |
20.04 |
| 2026-02-11 00:00 |
05:43:04.35 |
-50:59:22.3 |
HIP 27131 |
20.20 |
| 2026-02-11 12:00 |
05:43:03.19 |
-50:59:07.4 |
HIP 27131 |
20.35 |
| 2026-02-12 00:00 |
05:43:02.06 |
-50:58:52.5 |
HIP 27131 |
20.50 |
| 2026-02-12 12:00 |
05:43:00.93 |
-50:58:37.5 |
HIP 26788 |
20.35 |
| 2026-02-13 00:00 |
05:42:59.82 |
-50:58:22.3 |
HIP 26788 |
20.06 |
| 2026-02-13 12:00 |
05:42:58.73 |
-50:58:07.1 |
HIP 26788 |
19.76 |
| 2026-02-14 00:00 |
05:42:57.65 |
-50:57:51.9 |
HIP 26788 |
19.47 |
| 2026-02-14 12:00 |
05:42:56.59 |
-50:57:36.5 |
HIP 26788 |
19.17 |
| 2026-02-15 00:00 |
05:42:55.54 |
-50:57:21.0 |
HIP 26788 |
18.88 |
| 2026-02-15 12:00 |
05:42:54.51 |
-50:57:05.5 |
HIP 26788 |
18.59 |
| 2026-02-16 00:00 |
05:42:53.49 |
-50:56:49.9 |
HIP 26788 |
18.30 |
| 2026-02-16 12:00 |
05:42:52.49 |
-50:56:34.2 |
HIP 26788 |
18.02 |
| 2026-02-17 00:00 |
05:42:51.51 |
-50:56:18.4 |
HIP 26788 |
17.73 |
| 2026-02-17 12:00 |
05:42:50.54 |
-50:56:02.5 |
HIP 26788 |
17.45 |
| 2026-02-18 00:00 |
05:42:49.59 |
-50:55:46.6 |
HIP 26788 |
17.17 |
| 2026-02-18 12:00 |
05:42:48.65 |
-50:55:30.6 |
HIP 26788 |
16.89 |
| 2026-02-19 00:00 |
05:42:47.73 |
-50:55:14.5 |
HIP 26788 |
16.61 |
| 2026-02-19 12:00 |
05:42:46.83 |
-50:54:58.4 |
HIP 26788 |
16.34 |
| 2026-02-20 00:00 |
05:42:45.94 |
-50:54:42.2 |
HIP 26788 |
16.06 |
| 2026-02-20 12:00 |
05:42:45.07 |
-50:54:25.9 |
HIP 26788 |
15.80 |
| 2026-02-21 00:00 |
05:42:44.21 |
-50:54:09.6 |
HIP 26788 |
15.53 |
| 2026-02-21 12:00 |
05:42:43.37 |
-50:53:53.1 |
HIP 26788 |
15.26 |
| 2026-02-22 00:00 |
05:42:42.55 |
-50:53:36.7 |
HIP 26788 |
15.00 |
| 2026-02-22 12:00 |
05:42:41.74 |
-50:53:20.1 |
HIP 26788 |
14.75 |
| 2026-02-23 00:00 |
05:42:40.95 |
-50:53:03.5 |
HIP 26788 |
14.49 |
| 2026-02-23 12:00 |
05:42:40.18 |
-50:52:46.9 |
HIP 26788 |
14.24 |
| 2026-02-24 00:00 |
05:42:39.42 |
-50:52:30.2 |
HIP 26788 |
14.00 |