メタデータ
| 項目 |
値 |
| Designation |
C/2014 W10 (PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2016-02-17T17:05:45.709440Z |
| Orbit solution date (soln_date, UTC) |
2022-07-16T01:42:20Z |
| Obs used |
28 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
10.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-09-22.0000000 |
| e |
1.00362111 |
| q (au) |
7.656557 |
| a (au) |
-2114.420080 |
| i (deg) |
83.309348 |
| Ω (om, deg) |
43.245415 |
| ω (w, deg) |
42.337209 |
| M (ma, deg) |
-0.005208 |
等級
散乱 + 全体線形
$$
M_a = (1.984 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
1.984 |
| n |
6.000 |
| gf |
0.991 |
| gb |
-0.653 |
| k |
1.000 |
| δ90 |
9.997 |
| 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) |
| 2026-05-12 00:00 |
15:05:44.36 |
+16:18:14.8 |
HIP 74014 |
45.42 |
| 2026-05-12 12:00 |
15:05:38.46 |
+16:18:16.9 |
HIP 74014 |
46.27 |
| 2026-05-13 00:00 |
15:05:32.57 |
+16:18:18.7 |
HIP 73593 |
45.62 |
| 2026-05-13 12:00 |
15:05:26.68 |
+16:18:20.0 |
HIP 73593 |
44.29 |
| 2026-05-14 00:00 |
15:05:20.79 |
+16:18:20.9 |
HIP 73593 |
42.97 |
| 2026-05-14 12:00 |
15:05:14.91 |
+16:18:21.3 |
HIP 73593 |
41.65 |
| 2026-05-15 00:00 |
15:05:09.03 |
+16:18:21.4 |
HIP 73593 |
40.34 |
| 2026-05-15 12:00 |
15:05:03.17 |
+16:18:21.0 |
HIP 73593 |
39.03 |
| 2026-05-16 00:00 |
15:04:57.30 |
+16:18:20.2 |
HIP 73593 |
37.73 |
| 2026-05-16 12:00 |
15:04:51.45 |
+16:18:18.9 |
HIP 73593 |
36.44 |
| 2026-05-17 00:00 |
15:04:45.60 |
+16:18:17.2 |
HIP 73593 |
35.16 |
| 2026-05-17 12:00 |
15:04:39.77 |
+16:18:15.1 |
HIP 73593 |
33.88 |
| 2026-05-18 00:00 |
15:04:33.94 |
+16:18:12.6 |
HIP 73593 |
32.61 |
| 2026-05-18 12:00 |
15:04:28.12 |
+16:18:09.6 |
HIP 73593 |
31.35 |
| 2026-05-19 00:00 |
15:04:22.31 |
+16:18:06.2 |
HIP 73593 |
30.10 |
| 2026-05-19 12:00 |
15:04:16.51 |
+16:18:02.4 |
HIP 73593 |
28.86 |
| 2026-05-20 00:00 |
15:04:10.72 |
+16:17:58.1 |
HIP 73593 |
27.64 |
| 2026-05-20 12:00 |
15:04:04.94 |
+16:17:53.4 |
HIP 73593 |
26.43 |
| 2026-05-21 00:00 |
15:03:59.18 |
+16:17:48.3 |
HIP 73593 |
25.24 |
| 2026-05-21 12:00 |
15:03:53.42 |
+16:17:42.7 |
HIP 73593 |
24.07 |
| 2026-05-22 00:00 |
15:03:47.68 |
+16:17:36.7 |
HIP 73593 |
22.92 |
| 2026-05-22 12:00 |
15:03:41.96 |
+16:17:30.3 |
HIP 73593 |
21.79 |
| 2026-05-23 00:00 |
15:03:36.24 |
+16:17:23.4 |
HIP 73593 |
20.69 |
| 2026-05-23 12:00 |
15:03:30.54 |
+16:17:16.1 |
HIP 73593 |
19.63 |
| 2026-05-24 00:00 |
15:03:24.86 |
+16:17:08.4 |
HIP 73593 |
18.60 |
| 2026-05-24 12:00 |
15:03:19.19 |
+16:17:00.2 |
HIP 73593 |
17.61 |
| 2026-05-25 00:00 |
15:03:13.53 |
+16:16:51.6 |
HIP 73593 |
16.68 |
| 2026-05-25 12:00 |
15:03:07.89 |
+16:16:42.6 |
HIP 73593 |
15.80 |
| 2026-05-26 00:00 |
15:03:02.27 |
+16:16:33.1 |
HIP 73593 |
14.99 |
| 2026-05-26 12:00 |
15:02:56.66 |
+16:16:23.2 |
HIP 73593 |
14.26 |
| 2026-05-27 00:00 |
15:02:51.07 |
+16:16:12.9 |
HIP 73593 |
13.63 |
| 2026-05-27 12:00 |
15:02:45.50 |
+16:16:02.2 |
HIP 73593 |
13.09 |
| 2026-05-28 00:00 |
15:02:39.95 |
+16:15:51.0 |
HIP 73593 |
12.67 |
| 2026-05-28 12:00 |
15:02:34.41 |
+16:15:39.4 |
HIP 73593 |
12.37 |
| 2026-05-29 00:00 |
15:02:28.89 |
+16:15:27.4 |
HIP 73593 |
12.21 |
| 2026-05-29 12:00 |
15:02:23.39 |
+16:15:14.9 |
HIP 73593 |
12.19 |
| 2026-05-30 00:00 |
15:02:17.91 |
+16:15:02.0 |
HIP 73593 |
12.31 |
| 2026-05-30 12:00 |
15:02:12.45 |
+16:14:48.7 |
HIP 73593 |
12.56 |
| 2026-05-31 00:00 |
15:02:07.01 |
+16:14:34.9 |
HIP 73593 |
12.93 |
| 2026-05-31 12:00 |
15:02:01.59 |
+16:14:20.8 |
HIP 73593 |
13.41 |
| 2026-06-01 00:00 |
15:01:56.20 |
+16:14:06.2 |
HIP 73482 |
13.76 |
| 2026-06-01 12:00 |
15:01:50.82 |
+16:13:51.2 |
HIP 73482 |
12.46 |
| 2026-06-02 00:00 |
15:01:45.46 |
+16:13:35.7 |
HIP 73482 |
11.17 |