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) |
| 2026-06-01 00:00 |
02:51:04.49 |
+12:40:28.1 |
HIP 13201 |
17.36 |
| 2026-06-01 12:00 |
02:51:05.52 |
+12:40:32.4 |
HIP 13201 |
17.62 |
| 2026-06-02 00:00 |
02:51:06.54 |
+12:40:36.8 |
HIP 13201 |
17.87 |
| 2026-06-02 12:00 |
02:51:07.56 |
+12:40:41.1 |
HIP 13201 |
18.12 |
| 2026-06-03 00:00 |
02:51:08.58 |
+12:40:45.3 |
HIP 13201 |
18.38 |
| 2026-06-03 12:00 |
02:51:09.59 |
+12:40:49.6 |
HIP 13201 |
18.63 |
| 2026-06-04 00:00 |
02:51:10.59 |
+12:40:53.8 |
HIP 13201 |
18.88 |
| 2026-06-04 12:00 |
02:51:11.59 |
+12:40:58.0 |
HIP 13201 |
19.13 |
| 2026-06-05 00:00 |
02:51:12.59 |
+12:41:02.1 |
HIP 13201 |
19.37 |
| 2026-06-05 12:00 |
02:51:13.58 |
+12:41:06.2 |
HIP 13201 |
19.62 |
| 2026-06-06 00:00 |
02:51:14.57 |
+12:41:10.3 |
HIP 13201 |
19.87 |
| 2026-06-06 12:00 |
02:51:15.55 |
+12:41:14.4 |
HIP 13201 |
20.11 |
| 2026-06-07 00:00 |
02:51:16.53 |
+12:41:18.4 |
HIP 13201 |
20.36 |
| 2026-06-07 12:00 |
02:51:17.50 |
+12:41:22.4 |
HIP 13201 |
20.60 |
| 2026-06-08 00:00 |
02:51:18.47 |
+12:41:26.4 |
HIP 13201 |
20.84 |
| 2026-06-08 12:00 |
02:51:19.44 |
+12:41:30.3 |
HIP 13201 |
21.08 |
| 2026-06-09 00:00 |
02:51:20.39 |
+12:41:34.3 |
HIP 13201 |
21.32 |
| 2026-06-09 12:00 |
02:51:21.35 |
+12:41:38.1 |
HIP 13201 |
21.56 |
| 2026-06-10 00:00 |
02:51:22.29 |
+12:41:42.0 |
HIP 13201 |
21.79 |
| 2026-06-10 12:00 |
02:51:23.24 |
+12:41:45.8 |
HIP 13201 |
22.03 |
| 2026-06-11 00:00 |
02:51:24.17 |
+12:41:49.6 |
HIP 13201 |
22.26 |
| 2026-06-11 12:00 |
02:51:25.10 |
+12:41:53.3 |
HIP 13201 |
22.50 |
| 2026-06-12 00:00 |
02:51:26.03 |
+12:41:57.0 |
HIP 13201 |
22.73 |
| 2026-06-12 12:00 |
02:51:26.95 |
+12:42:00.7 |
HIP 13201 |
22.96 |
| 2026-06-13 00:00 |
02:51:27.87 |
+12:42:04.4 |
HIP 13201 |
23.19 |
| 2026-06-13 12:00 |
02:51:28.77 |
+12:42:08.0 |
HIP 13201 |
23.41 |
| 2026-06-14 00:00 |
02:51:29.68 |
+12:42:11.6 |
HIP 13201 |
23.64 |
| 2026-06-14 12:00 |
02:51:30.57 |
+12:42:15.1 |
HIP 13201 |
23.86 |
| 2026-06-15 00:00 |
02:51:31.47 |
+12:42:18.6 |
HIP 13201 |
24.09 |
| 2026-06-15 12:00 |
02:51:32.35 |
+12:42:22.1 |
HIP 13201 |
24.31 |
| 2026-06-16 00:00 |
02:51:33.23 |
+12:42:25.6 |
HIP 13201 |
24.53 |
| 2026-06-16 12:00 |
02:51:34.10 |
+12:42:29.0 |
HIP 13201 |
24.75 |
| 2026-06-17 00:00 |
02:51:34.97 |
+12:42:32.3 |
HIP 13201 |
24.96 |
| 2026-06-17 12:00 |
02:51:35.83 |
+12:42:35.7 |
HIP 13201 |
25.18 |
| 2026-06-18 00:00 |
02:51:36.68 |
+12:42:39.0 |
HIP 13201 |
25.39 |
| 2026-06-18 12:00 |
02:51:37.53 |
+12:42:42.2 |
HIP 13201 |
25.60 |
| 2026-06-19 00:00 |
02:51:38.37 |
+12:42:45.5 |
HIP 13201 |
25.81 |
| 2026-06-19 12:00 |
02:51:39.21 |
+12:42:48.6 |
HIP 13201 |
26.02 |
| 2026-06-20 00:00 |
02:51:40.03 |
+12:42:51.8 |
HIP 13201 |
26.23 |
| 2026-06-20 12:00 |
02:51:40.85 |
+12:42:54.9 |
HIP 13201 |
26.43 |
| 2026-06-21 00:00 |
02:51:41.67 |
+12:42:58.0 |
HIP 13201 |
26.64 |
| 2026-06-21 12:00 |
02:51:42.48 |
+12:43:01.0 |
HIP 13201 |
26.84 |
| 2026-06-22 00:00 |
02:51:43.28 |
+12:43:04.0 |
HIP 13201 |
27.04 |