C/1950 K1 (Minkowski)
メタデータ
| 項目 |
値 |
| Designation |
C/1950 K1 (Minkowski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1951-01-15T01:00:02.396160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:09Z |
| Obs used |
32 |
| 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) |
1951-02-12.0000000 |
| e |
1.00121746 |
| q (au) |
2.572332 |
| a (au) |
-2112.865342 |
| i (deg) |
144.155299 |
| Ω (om, deg) |
38.890420 |
| ω (w, deg) |
192.467845 |
| M (ma, deg) |
0.000284 |
等級
散乱 + 全体線形
$$
M_a = (5.948 + 2.647\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.948 |
| n |
2.647 |
| gf |
0.952 |
| gb |
-0.765 |
| k |
0.984 |
| 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 |
| 1950-06-06 |
1951-01-14 |
+2.1156 |
-1.155 |
| 1951-01-19 |
1951-06-30 |
+15.8103 |
-6.727 |
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 |
02:47:55.53 |
+12:23:10.0 |
HIP 12985 |
14.03 |
| 2026-02-03 12:00 |
02:47:55.49 |
+12:23:11.2 |
HIP 12985 |
14.02 |
| 2026-02-04 00:00 |
02:47:55.45 |
+12:23:12.6 |
HIP 12985 |
14.00 |
| 2026-02-04 12:00 |
02:47:55.43 |
+12:23:13.9 |
HIP 12985 |
13.99 |
| 2026-02-05 00:00 |
02:47:55.42 |
+12:23:15.4 |
HIP 12985 |
13.98 |
| 2026-02-05 12:00 |
02:47:55.42 |
+12:23:16.8 |
HIP 12985 |
13.97 |
| 2026-02-06 00:00 |
02:47:55.42 |
+12:23:18.3 |
HIP 12985 |
13.97 |
| 2026-02-06 12:00 |
02:47:55.44 |
+12:23:19.9 |
HIP 12985 |
13.97 |
| 2026-02-07 00:00 |
02:47:55.47 |
+12:23:21.5 |
HIP 12985 |
13.97 |
| 2026-02-07 12:00 |
02:47:55.51 |
+12:23:23.2 |
HIP 12985 |
13.97 |
| 2026-02-08 00:00 |
02:47:55.56 |
+12:23:24.9 |
HIP 12985 |
13.97 |
| 2026-02-08 12:00 |
02:47:55.62 |
+12:23:26.6 |
HIP 12985 |
13.98 |
| 2026-02-09 00:00 |
02:47:55.69 |
+12:23:28.4 |
HIP 12985 |
13.99 |
| 2026-02-09 12:00 |
02:47:55.77 |
+12:23:30.2 |
HIP 12985 |
14.00 |
| 2026-02-10 00:00 |
02:47:55.87 |
+12:23:32.1 |
HIP 12985 |
14.02 |
| 2026-02-10 12:00 |
02:47:55.97 |
+12:23:34.0 |
HIP 12985 |
14.03 |
| 2026-02-11 00:00 |
02:47:56.08 |
+12:23:36.0 |
HIP 12985 |
14.05 |
| 2026-02-11 12:00 |
02:47:56.20 |
+12:23:38.0 |
HIP 12985 |
14.07 |
| 2026-02-12 00:00 |
02:47:56.34 |
+12:23:40.1 |
HIP 12985 |
14.10 |
| 2026-02-12 12:00 |
02:47:56.48 |
+12:23:42.2 |
HIP 12985 |
14.12 |
| 2026-02-13 00:00 |
02:47:56.63 |
+12:23:44.4 |
HIP 12985 |
14.15 |
| 2026-02-13 12:00 |
02:47:56.80 |
+12:23:46.6 |
HIP 12985 |
14.18 |
| 2026-02-14 00:00 |
02:47:56.97 |
+12:23:48.8 |
HIP 12985 |
14.21 |
| 2026-02-14 12:00 |
02:47:57.16 |
+12:23:51.1 |
HIP 12985 |
14.25 |
| 2026-02-15 00:00 |
02:47:57.35 |
+12:23:53.4 |
HIP 12985 |
14.29 |
| 2026-02-15 12:00 |
02:47:57.56 |
+12:23:55.8 |
HIP 12985 |
14.33 |
| 2026-02-16 00:00 |
02:47:57.77 |
+12:23:58.2 |
HIP 12985 |
14.37 |
| 2026-02-16 12:00 |
02:47:58.00 |
+12:24:00.7 |
HIP 12985 |
14.42 |
| 2026-02-17 00:00 |
02:47:58.24 |
+12:24:03.2 |
HIP 12985 |
14.46 |
| 2026-02-17 12:00 |
02:47:58.48 |
+12:24:05.8 |
HIP 12985 |
14.51 |
| 2026-02-18 00:00 |
02:47:58.74 |
+12:24:08.4 |
HIP 12985 |
14.57 |
| 2026-02-18 12:00 |
02:47:59.01 |
+12:24:11.0 |
HIP 12985 |
14.62 |
| 2026-02-19 00:00 |
02:47:59.28 |
+12:24:13.7 |
HIP 12985 |
14.68 |
| 2026-02-19 12:00 |
02:47:59.57 |
+12:24:16.4 |
HIP 12985 |
14.74 |
| 2026-02-20 00:00 |
02:47:59.87 |
+12:24:19.2 |
HIP 12985 |
14.80 |
| 2026-02-20 12:00 |
02:48:00.17 |
+12:24:22.0 |
HIP 12985 |
14.87 |
| 2026-02-21 00:00 |
02:48:00.49 |
+12:24:24.8 |
HIP 12985 |
14.94 |
| 2026-02-21 12:00 |
02:48:00.82 |
+12:24:27.7 |
HIP 12985 |
15.01 |
| 2026-02-22 00:00 |
02:48:01.15 |
+12:24:30.6 |
HIP 12985 |
15.08 |
| 2026-02-22 12:00 |
02:48:01.50 |
+12:24:33.6 |
HIP 12985 |
15.15 |
| 2026-02-23 00:00 |
02:48:01.85 |
+12:24:36.6 |
HIP 12985 |
15.23 |
| 2026-02-23 12:00 |
02:48:02.22 |
+12:24:39.7 |
HIP 12985 |
15.31 |
| 2026-02-24 00:00 |
02:48:02.60 |
+12:24:42.8 |
HIP 12985 |
15.40 |