C/2013 V5 (Oukaimeden)
メタデータ
| 項目 |
値 |
| Designation |
C/2013 V5 (Oukaimeden) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-09-28T05:21:10.025280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:42Z |
| Obs used |
1519 |
| NEO |
- |
| M1 |
10.800 |
| K1 |
7.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-05-07.0000000 |
| e |
0.99872022 |
| q (au) |
0.625586 |
| a (au) |
488.821430 |
| i (deg) |
154.885490 |
| Ω (om, deg) |
278.616285 |
| ω (w, deg) |
314.568126 |
| M (ma, deg) |
359.986847 |
等級
散乱 + 全体線形
$$
M_a = (11.416 + 3.189\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.416 |
| n |
3.189 |
| gf |
1.000 |
| gb |
-0.569 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2013-11-12 |
2014-08-23 |
+2.6983 |
-1.565 |
| 2014-08-23 |
2014-09-28 |
-5.6126 |
-1.006 |
| 2014-09-28 |
2014-10-14 |
+11.8900 |
+2.906 |
| 2014-10-14 |
2015-02-17 |
+5.1684 |
+0.565 |
| 2015-02-17 |
2015-04-19 |
+0.6936 |
+3.285 |
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 |
11:22:46.47 |
+28:53:13.7 |
HIP 55617 |
15.61 |
| 2026-02-03 12:00 |
11:22:42.45 |
+28:53:50.3 |
HIP 55617 |
16.67 |
| 2026-02-04 00:00 |
11:22:38.40 |
+28:54:26.8 |
HIP 55617 |
17.74 |
| 2026-02-04 12:00 |
11:22:34.32 |
+28:55:03.2 |
HIP 55617 |
18.82 |
| 2026-02-05 00:00 |
11:22:30.23 |
+28:55:39.6 |
HIP 55617 |
19.89 |
| 2026-02-05 12:00 |
11:22:26.10 |
+28:56:15.8 |
HIP 55530 |
19.69 |
| 2026-02-06 00:00 |
11:22:21.96 |
+28:56:52.0 |
HIP 55530 |
19.13 |
| 2026-02-06 12:00 |
11:22:17.79 |
+28:57:28.0 |
HIP 55530 |
18.62 |
| 2026-02-07 00:00 |
11:22:13.60 |
+28:58:04.0 |
HIP 55530 |
18.16 |
| 2026-02-07 12:00 |
11:22:09.38 |
+28:58:39.8 |
HIP 55530 |
17.76 |
| 2026-02-08 00:00 |
11:22:05.14 |
+28:59:15.6 |
HIP 55530 |
17.43 |
| 2026-02-08 12:00 |
11:22:00.88 |
+28:59:51.2 |
HIP 55530 |
17.16 |
| 2026-02-09 00:00 |
11:21:56.60 |
+29:00:26.7 |
HIP 55530 |
16.96 |
| 2026-02-09 12:00 |
11:21:52.30 |
+29:01:02.1 |
HIP 55530 |
16.84 |
| 2026-02-10 00:00 |
11:21:47.97 |
+29:01:37.4 |
HIP 55530 |
16.79 |
| 2026-02-10 12:00 |
11:21:43.62 |
+29:02:12.6 |
HIP 55530 |
16.82 |
| 2026-02-11 00:00 |
11:21:39.26 |
+29:02:47.6 |
HIP 55530 |
16.93 |
| 2026-02-11 12:00 |
11:21:34.87 |
+29:03:22.5 |
HIP 55530 |
17.12 |
| 2026-02-12 00:00 |
11:21:30.46 |
+29:03:57.3 |
HIP 55530 |
17.38 |
| 2026-02-12 12:00 |
11:21:26.04 |
+29:04:31.9 |
HIP 55530 |
17.71 |
| 2026-02-13 00:00 |
11:21:21.59 |
+29:05:06.4 |
HIP 55530 |
18.11 |
| 2026-02-13 12:00 |
11:21:17.13 |
+29:05:40.8 |
HIP 55530 |
18.58 |
| 2026-02-14 00:00 |
11:21:12.65 |
+29:06:15.0 |
HIP 55530 |
19.10 |
| 2026-02-14 12:00 |
11:21:08.15 |
+29:06:49.1 |
HIP 55530 |
19.69 |
| 2026-02-15 00:00 |
11:21:03.63 |
+29:07:23.0 |
HIP 55530 |
20.32 |
| 2026-02-15 12:00 |
11:20:59.09 |
+29:07:56.7 |
HIP 55530 |
21.00 |
| 2026-02-16 00:00 |
11:20:54.54 |
+29:08:30.3 |
HIP 55530 |
21.72 |
| 2026-02-16 12:00 |
11:20:49.97 |
+29:09:03.8 |
HIP 55530 |
22.48 |
| 2026-02-17 00:00 |
11:20:45.39 |
+29:09:37.1 |
HIP 55530 |
23.28 |
| 2026-02-17 12:00 |
11:20:40.79 |
+29:10:10.2 |
HIP 55341 |
23.46 |
| 2026-02-18 00:00 |
11:20:36.17 |
+29:10:43.1 |
HIP 55341 |
23.62 |
| 2026-02-18 12:00 |
11:20:31.54 |
+29:11:15.9 |
HIP 55341 |
23.82 |
| 2026-02-19 00:00 |
11:20:26.90 |
+29:11:48.5 |
HIP 55341 |
24.08 |
| 2026-02-19 12:00 |
11:20:22.24 |
+29:12:21.0 |
HIP 55341 |
24.38 |
| 2026-02-20 00:00 |
11:20:17.57 |
+29:12:53.2 |
HIP 55341 |
24.73 |
| 2026-02-20 12:00 |
11:20:12.88 |
+29:13:25.3 |
HIP 55341 |
25.12 |
| 2026-02-21 00:00 |
11:20:08.18 |
+29:13:57.1 |
HIP 55341 |
25.56 |
| 2026-02-21 12:00 |
11:20:03.47 |
+29:14:28.8 |
HIP 55341 |
26.03 |
| 2026-02-22 00:00 |
11:19:58.75 |
+29:15:00.3 |
HIP 55341 |
26.55 |
| 2026-02-22 12:00 |
11:19:54.01 |
+29:15:31.6 |
HIP 55341 |
27.10 |
| 2026-02-23 00:00 |
11:19:49.27 |
+29:16:02.7 |
HIP 55341 |
27.69 |
| 2026-02-23 12:00 |
11:19:44.51 |
+29:16:33.6 |
HIP 55341 |
28.31 |
| 2026-02-24 00:00 |
11:19:39.75 |
+29:17:04.3 |
HIP 55341 |
28.96 |