メタデータ
| 項目 |
値 |
| Designation |
C/2013 V3 (Nevski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-10-29T21:44:27.254400Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:42Z |
| Obs used |
904 |
| NEO |
- |
| M1 |
15.400 |
| K1 |
5.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-12-03.0000000 |
| e |
0.89097069 |
| q (au) |
1.386694 |
| a (au) |
12.718543 |
| i (deg) |
32.134529 |
| Ω (om, deg) |
100.918155 |
| ω (w, deg) |
339.643363 |
| M (ma, deg) |
0.740845 |
等級
散乱 + 全体線形
$$
M_a = (12.738 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.738 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
| 2013-11-06 |
2014-03-08 |
+8.9180 |
-2.644 |
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) |
| 2026-03-26 00:00 |
17:06:09.63 |
-06:16:56.0 |
HIP 83676 |
6.92 |
| 2026-03-26 12:00 |
17:06:08.29 |
-06:16:33.7 |
HIP 83676 |
6.54 |
| 2026-03-27 00:00 |
17:06:06.90 |
-06:16:11.3 |
HIP 83676 |
6.17 |
| 2026-03-27 12:00 |
17:06:05.47 |
-06:15:48.9 |
HIP 83676 |
5.83 |
| 2026-03-28 00:00 |
17:06:03.99 |
-06:15:26.6 |
HIP 83676 |
5.52 |
| 2026-03-28 12:00 |
17:06:02.46 |
-06:15:04.2 |
HIP 83676 |
5.25 |
| 2026-03-29 00:00 |
17:06:00.88 |
-06:14:41.8 |
HIP 83676 |
5.02 |
| 2026-03-29 12:00 |
17:05:59.25 |
-06:14:19.4 |
HIP 83676 |
4.85 |
| 2026-03-30 00:00 |
17:05:57.57 |
-06:13:57.0 |
HIP 83676 |
4.74 |
| 2026-03-30 12:00 |
17:05:55.85 |
-06:13:34.6 |
HIP 83676 |
4.70 |
| 2026-03-31 00:00 |
17:05:54.08 |
-06:13:12.2 |
HIP 83676 |
4.75 |
| 2026-03-31 12:00 |
17:05:52.26 |
-06:12:49.9 |
HIP 83676 |
4.87 |
| 2026-04-01 00:00 |
17:05:50.39 |
-06:12:27.5 |
HIP 83676 |
5.06 |
| 2026-04-01 12:00 |
17:05:48.48 |
-06:12:05.1 |
HIP 83676 |
5.33 |
| 2026-04-02 00:00 |
17:05:46.52 |
-06:11:42.8 |
HIP 83676 |
5.66 |
| 2026-04-02 12:00 |
17:05:44.51 |
-06:11:20.4 |
HIP 83676 |
6.05 |
| 2026-04-03 00:00 |
17:05:42.45 |
-06:10:58.1 |
HIP 83676 |
6.48 |
| 2026-04-03 12:00 |
17:05:40.35 |
-06:10:35.8 |
HIP 83676 |
6.96 |
| 2026-04-04 00:00 |
17:05:38.20 |
-06:10:13.5 |
HIP 83676 |
7.47 |
| 2026-04-04 12:00 |
17:05:36.01 |
-06:09:51.3 |
HIP 83676 |
8.02 |
| 2026-04-05 00:00 |
17:05:33.77 |
-06:09:29.0 |
HIP 83676 |
8.59 |
| 2026-04-05 12:00 |
17:05:31.48 |
-06:09:06.8 |
HIP 83676 |
9.19 |
| 2026-04-06 00:00 |
17:05:29.14 |
-06:08:44.6 |
HIP 83676 |
9.81 |
| 2026-04-06 12:00 |
17:05:26.77 |
-06:08:22.4 |
HIP 83676 |
10.44 |
| 2026-04-07 00:00 |
17:05:24.34 |
-06:08:00.3 |
HIP 83676 |
11.10 |
| 2026-04-07 12:00 |
17:05:21.87 |
-06:07:38.2 |
HIP 83676 |
11.78 |
| 2026-04-08 00:00 |
17:05:19.35 |
-06:07:16.1 |
HIP 83676 |
12.46 |
| 2026-04-08 12:00 |
17:05:16.79 |
-06:06:54.1 |
HIP 83676 |
13.17 |
| 2026-04-09 00:00 |
17:05:14.19 |
-06:06:32.1 |
HIP 83676 |
13.89 |
| 2026-04-09 12:00 |
17:05:11.53 |
-06:06:10.1 |
HIP 83676 |
14.62 |
| 2026-04-10 00:00 |
17:05:08.84 |
-06:05:48.2 |
HIP 83676 |
15.36 |
| 2026-04-10 12:00 |
17:05:06.10 |
-06:05:26.3 |
HIP 83676 |
16.12 |
| 2026-04-11 00:00 |
17:05:03.31 |
-06:05:04.5 |
HIP 83676 |
16.89 |
| 2026-04-11 12:00 |
17:05:00.49 |
-06:04:42.7 |
HIP 83676 |
17.66 |
| 2026-04-12 00:00 |
17:04:57.61 |
-06:04:21.0 |
HIP 83676 |
18.45 |
| 2026-04-12 12:00 |
17:04:54.70 |
-06:03:59.3 |
HIP 83676 |
19.26 |
| 2026-04-13 00:00 |
17:04:51.74 |
-06:03:37.7 |
HIP 83676 |
20.07 |
| 2026-04-13 12:00 |
17:04:48.74 |
-06:03:16.1 |
HIP 83676 |
20.89 |
| 2026-04-14 00:00 |
17:04:45.69 |
-06:02:54.6 |
HIP 83676 |
21.72 |
| 2026-04-14 12:00 |
17:04:42.60 |
-06:02:33.2 |
HIP 83676 |
22.57 |
| 2026-04-15 00:00 |
17:04:39.47 |
-06:02:11.8 |
HIP 83676 |
23.42 |
| 2026-04-15 12:00 |
17:04:36.30 |
-06:01:50.5 |
HIP 83676 |
24.28 |
| 2026-04-16 00:00 |
17:04:33.09 |
-06:01:29.2 |
HIP 83676 |
25.15 |