メタデータ
| 項目 |
値 |
| Designation |
C/1952 W1 (Mrkos) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1953-01-24T20:37:26.682240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:10Z |
| Obs used |
6 |
| 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) |
1953-05-04.0000000 |
| e |
1.00019124 |
| q (au) |
0.777758 |
| a (au) |
-4066.956181 |
| i (deg) |
97.176622 |
| Ω (om, deg) |
343.578585 |
| ω (w, deg) |
253.819495 |
| M (ma, deg) |
0.000377 |
等級
散乱 + 全体線形
$$
M_a = (8.778 + 4.911\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.778 |
| n |
4.911 |
| gf |
0.800 |
| gb |
-0.677 |
| k |
0.800 |
| δ90 |
10.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
20:17:05.56 |
+46:30:44.9 |
HIP 100040 |
8.26 |
| 2026-09-20 12:00 |
20:17:04.59 |
+46:30:30.5 |
HIP 100040 |
8.27 |
| 2026-09-21 00:00 |
20:17:03.63 |
+46:30:15.9 |
HIP 100040 |
8.29 |
| 2026-09-21 12:00 |
20:17:02.68 |
+46:30:01.3 |
HIP 100040 |
8.32 |
| 2026-09-22 00:00 |
20:17:01.74 |
+46:29:46.7 |
HIP 100040 |
8.35 |
| 2026-09-22 12:00 |
20:17:00.82 |
+46:29:32.0 |
HIP 100040 |
8.40 |
| 2026-09-23 00:00 |
20:16:59.91 |
+46:29:17.2 |
HIP 100040 |
8.45 |
| 2026-09-23 12:00 |
20:16:59.01 |
+46:29:02.3 |
HIP 100040 |
8.50 |
| 2026-09-24 00:00 |
20:16:58.13 |
+46:28:47.4 |
HIP 100040 |
8.57 |
| 2026-09-24 12:00 |
20:16:57.26 |
+46:28:32.5 |
HIP 100040 |
8.64 |
| 2026-09-25 00:00 |
20:16:56.40 |
+46:28:17.4 |
HIP 100040 |
8.72 |
| 2026-09-25 12:00 |
20:16:55.55 |
+46:28:02.3 |
HIP 100040 |
8.80 |
| 2026-09-26 00:00 |
20:16:54.71 |
+46:27:47.2 |
HIP 100040 |
8.89 |
| 2026-09-26 12:00 |
20:16:53.89 |
+46:27:32.0 |
HIP 100040 |
8.99 |
| 2026-09-27 00:00 |
20:16:53.08 |
+46:27:16.7 |
HIP 100040 |
9.09 |
| 2026-09-27 12:00 |
20:16:52.29 |
+46:27:01.4 |
HIP 100040 |
9.20 |
| 2026-09-28 00:00 |
20:16:51.51 |
+46:26:46.0 |
HIP 100040 |
9.32 |
| 2026-09-28 12:00 |
20:16:50.74 |
+46:26:30.6 |
HIP 100040 |
9.44 |
| 2026-09-29 00:00 |
20:16:49.98 |
+46:26:15.2 |
HIP 100040 |
9.56 |
| 2026-09-29 12:00 |
20:16:49.24 |
+46:25:59.6 |
HIP 100040 |
9.69 |
| 2026-09-30 00:00 |
20:16:48.51 |
+46:25:44.1 |
HIP 100040 |
9.83 |
| 2026-09-30 12:00 |
20:16:47.79 |
+46:25:28.5 |
HIP 100040 |
9.96 |
| 2026-10-01 00:00 |
20:16:47.09 |
+46:25:12.8 |
HIP 100040 |
10.11 |
| 2026-10-01 12:00 |
20:16:46.40 |
+46:24:57.1 |
HIP 100040 |
10.25 |
| 2026-10-02 00:00 |
20:16:45.72 |
+46:24:41.3 |
HIP 100040 |
10.40 |
| 2026-10-02 12:00 |
20:16:45.06 |
+46:24:25.5 |
HIP 100040 |
10.56 |
| 2026-10-03 00:00 |
20:16:44.41 |
+46:24:09.7 |
HIP 100040 |
10.71 |
| 2026-10-03 12:00 |
20:16:43.78 |
+46:23:53.8 |
HIP 100040 |
10.87 |
| 2026-10-04 00:00 |
20:16:43.16 |
+46:23:37.9 |
HIP 100040 |
11.04 |
| 2026-10-04 12:00 |
20:16:42.55 |
+46:23:21.9 |
HIP 100040 |
11.20 |
| 2026-10-05 00:00 |
20:16:41.95 |
+46:23:05.9 |
HIP 100040 |
11.37 |
| 2026-10-05 12:00 |
20:16:41.37 |
+46:22:49.9 |
HIP 100040 |
11.54 |
| 2026-10-06 00:00 |
20:16:40.81 |
+46:22:33.8 |
HIP 100040 |
11.72 |
| 2026-10-06 12:00 |
20:16:40.26 |
+46:22:17.7 |
HIP 100040 |
11.89 |
| 2026-10-07 00:00 |
20:16:39.72 |
+46:22:01.6 |
HIP 100040 |
12.07 |
| 2026-10-07 12:00 |
20:16:39.20 |
+46:21:45.4 |
HIP 100040 |
12.25 |
| 2026-10-08 00:00 |
20:16:38.69 |
+46:21:29.2 |
HIP 100040 |
12.43 |
| 2026-10-08 12:00 |
20:16:38.19 |
+46:21:13.0 |
HIP 100040 |
12.61 |
| 2026-10-09 00:00 |
20:16:37.71 |
+46:20:56.7 |
HIP 100040 |
12.80 |
| 2026-10-09 12:00 |
20:16:37.24 |
+46:20:40.5 |
HIP 100040 |
12.98 |
| 2026-10-10 00:00 |
20:16:36.79 |
+46:20:24.2 |
HIP 100040 |
13.17 |
| 2026-10-10 12:00 |
20:16:36.35 |
+46:20:07.8 |
HIP 100040 |
13.36 |
| 2026-10-11 00:00 |
20:16:35.93 |
+46:19:51.5 |
HIP 100040 |
13.55 |