メタデータ
| 項目 |
値 |
| Designation |
143P/Kowal-Mrkos |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-05-07T09:50:36.579840Z |
| Orbit solution date (soln_date, UTC) |
2026-07-06T12:12:40Z |
| Obs used |
1483 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2016-04-01.0000000 |
| e |
0.40992672 |
| q (au) |
2.533941 |
| a (au) |
4.294282 |
| i (deg) |
4.694479 |
| Ω (om, deg) |
245.305556 |
| ω (w, deg) |
320.836644 |
| M (ma, deg) |
275.115295 |
等級
散乱 + 全体線形
$$
M_a = (14.422 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.422 |
| n |
2.000 |
| gf |
0.836 |
| gb |
-0.815 |
| k |
0.995 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
09:49:27.64 |
+08:45:07.1 |
HIP 48146 |
15.84 |
| 2026-07-29 12:00 |
09:50:11.50 |
+08:41:25.9 |
HIP 48146 |
25.78 |
| 2026-07-30 00:00 |
09:50:55.38 |
+08:37:43.9 |
HIP 48370 |
17.60 |
| 2026-07-30 12:00 |
09:51:39.28 |
+08:34:01.1 |
HIP 48370 |
10.27 |
| 2026-07-31 00:00 |
09:52:23.22 |
+08:30:17.5 |
HIP 48370 |
12.83 |
| 2026-07-31 12:00 |
09:53:07.19 |
+08:26:33.1 |
HIP 48498 |
15.80 |
| 2026-08-01 00:00 |
09:53:51.18 |
+08:22:47.9 |
HIP 48553 |
18.72 |
| 2026-08-01 12:00 |
09:54:35.20 |
+08:19:02.0 |
HIP 48553 |
16.18 |
| 2026-08-02 00:00 |
09:55:19.24 |
+08:15:15.2 |
HIP 48553 |
20.95 |
| 2026-08-02 12:00 |
09:56:03.32 |
+08:11:27.7 |
HIP 48553 |
29.70 |
| 2026-08-03 00:00 |
09:56:47.42 |
+08:07:39.4 |
HIP 48876 |
22.78 |
| 2026-08-03 12:00 |
09:57:31.54 |
+08:03:50.3 |
HIP 48876 |
17.46 |
| 2026-08-04 00:00 |
09:58:15.70 |
+08:00:00.4 |
HIP 48876 |
18.94 |
| 2026-08-04 12:00 |
09:58:59.87 |
+07:56:09.8 |
HIP 49029 |
19.19 |
| 2026-08-05 00:00 |
09:59:44.08 |
+07:52:18.3 |
HIP 49029 |
12.56 |
| 2026-08-05 12:00 |
10:00:28.30 |
+07:48:26.2 |
HIP 49029 |
14.73 |
| 2026-08-06 00:00 |
10:01:12.55 |
+07:44:33.2 |
HIP 49029 |
23.38 |
| 2026-08-06 12:00 |
10:01:56.83 |
+07:40:39.5 |
HIP 49100 |
29.72 |
| 2026-08-07 00:00 |
10:02:41.13 |
+07:36:45.1 |
HIP 49100 |
31.93 |
| 2026-08-07 12:00 |
10:03:25.45 |
+07:32:49.9 |
HIP 49316 |
23.84 |
| 2026-08-08 00:00 |
10:04:09.80 |
+07:28:54.0 |
HIP 49316 |
18.49 |
| 2026-08-08 12:00 |
10:04:54.17 |
+07:24:57.3 |
HIP 49316 |
19.71 |
| 2026-08-09 00:00 |
10:05:38.56 |
+07:20:59.8 |
HIP 49316 |
26.61 |
| 2026-08-09 12:00 |
10:06:22.98 |
+07:17:01.7 |
HIP 49519 |
22.97 |
| 2026-08-10 00:00 |
10:07:07.41 |
+07:13:02.8 |
HIP 49519 |
20.12 |
| 2026-08-10 12:00 |
10:07:51.87 |
+07:09:03.1 |
HIP 49519 |
23.60 |
| 2026-08-11 00:00 |
10:08:36.35 |
+07:05:02.8 |
HIP 49704 |
22.19 |
| 2026-08-11 12:00 |
10:09:20.84 |
+07:01:01.7 |
HIP 49704 |
19.70 |
| 2026-08-12 00:00 |
10:10:05.36 |
+06:57:00.0 |
HIP 49704 |
23.67 |
| 2026-08-12 12:00 |
10:10:49.90 |
+06:52:57.5 |
HIP 49999 |
27.34 |
| 2026-08-13 00:00 |
10:11:34.45 |
+06:48:54.3 |
HIP 49999 |
15.77 |
| 2026-08-13 12:00 |
10:12:19.02 |
+06:44:50.4 |
HIP 49999 |
5.21 |
| 2026-08-14 00:00 |
10:13:03.61 |
+06:40:45.9 |
HIP 49999 |
9.15 |
| 2026-08-14 12:00 |
10:13:48.22 |
+06:36:40.6 |
HIP 49999 |
20.47 |
| 2026-08-15 00:00 |
10:14:32.84 |
+06:32:34.7 |
HIP 50178 |
25.44 |
| 2026-08-15 12:00 |
10:15:17.48 |
+06:28:28.1 |
HIP 50255 |
27.77 |
| 2026-08-16 00:00 |
10:16:02.14 |
+06:24:20.9 |
HIP 50423 |
25.67 |
| 2026-08-16 12:00 |
10:16:46.81 |
+06:20:12.9 |
HIP 50423 |
15.32 |
| 2026-08-17 00:00 |
10:17:31.49 |
+06:16:04.3 |
HIP 50423 |
9.53 |
| 2026-08-17 12:00 |
10:18:16.19 |
+06:11:55.1 |
HIP 50423 |
15.11 |
| 2026-08-18 00:00 |
10:19:00.90 |
+06:07:45.2 |
HIP 50563 |
11.15 |
| 2026-08-18 12:00 |
10:19:45.63 |
+06:03:34.7 |
HIP 50563 |
8.22 |
| 2026-08-19 00:00 |
10:20:30.37 |
+05:59:23.6 |
HIP 50563 |
17.12 |