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) |
| 2026-09-20 00:00 |
16:47:00.40 |
-06:30:53.8 |
HIP 82183 |
18.36 |
| 2026-09-20 12:00 |
16:47:02.20 |
-06:31:22.1 |
HIP 82183 |
18.68 |
| 2026-09-21 00:00 |
16:47:04.03 |
-06:31:50.5 |
HIP 82183 |
19.00 |
| 2026-09-21 12:00 |
16:47:05.92 |
-06:32:18.9 |
HIP 82183 |
19.35 |
| 2026-09-22 00:00 |
16:47:07.84 |
-06:32:47.3 |
HIP 82183 |
19.70 |
| 2026-09-22 12:00 |
16:47:09.81 |
-06:33:15.7 |
HIP 82183 |
20.08 |
| 2026-09-23 00:00 |
16:47:11.83 |
-06:33:44.1 |
HIP 82183 |
20.46 |
| 2026-09-23 12:00 |
16:47:13.88 |
-06:34:12.5 |
HIP 82183 |
20.86 |
| 2026-09-24 00:00 |
16:47:15.99 |
-06:34:40.9 |
HIP 82183 |
21.28 |
| 2026-09-24 12:00 |
16:47:18.13 |
-06:35:09.3 |
HIP 82183 |
21.71 |
| 2026-09-25 00:00 |
16:47:20.32 |
-06:35:37.7 |
HIP 82183 |
22.15 |
| 2026-09-25 12:00 |
16:47:22.55 |
-06:36:06.1 |
HIP 82183 |
22.61 |
| 2026-09-26 00:00 |
16:47:24.83 |
-06:36:34.5 |
HIP 82183 |
23.08 |
| 2026-09-26 12:00 |
16:47:27.15 |
-06:37:02.9 |
HIP 82183 |
23.56 |
| 2026-09-27 00:00 |
16:47:29.51 |
-06:37:31.2 |
HIP 82183 |
24.06 |
| 2026-09-27 12:00 |
16:47:31.91 |
-06:37:59.6 |
HIP 82183 |
24.57 |
| 2026-09-28 00:00 |
16:47:34.35 |
-06:38:27.9 |
HIP 82183 |
25.10 |
| 2026-09-28 12:00 |
16:47:36.84 |
-06:38:56.3 |
HIP 82183 |
25.64 |
| 2026-09-29 00:00 |
16:47:39.37 |
-06:39:24.6 |
HIP 82183 |
26.19 |
| 2026-09-29 12:00 |
16:47:41.94 |
-06:39:52.9 |
HIP 82183 |
26.75 |
| 2026-09-30 00:00 |
16:47:44.56 |
-06:40:21.2 |
HIP 82183 |
27.33 |
| 2026-09-30 12:00 |
16:47:47.21 |
-06:40:49.5 |
HIP 82183 |
27.92 |
| 2026-10-01 00:00 |
16:47:49.91 |
-06:41:17.7 |
HIP 82183 |
28.53 |
| 2026-10-01 12:00 |
16:47:52.65 |
-06:41:45.9 |
HIP 82183 |
29.15 |
| 2026-10-02 00:00 |
16:47:55.43 |
-06:42:14.1 |
HIP 82183 |
29.77 |
| 2026-10-02 12:00 |
16:47:58.25 |
-06:42:42.3 |
HIP 82183 |
30.42 |
| 2026-10-03 00:00 |
16:48:01.11 |
-06:43:10.5 |
HIP 82183 |
31.07 |
| 2026-10-03 12:00 |
16:48:04.01 |
-06:43:38.6 |
HIP 82183 |
31.74 |
| 2026-10-04 00:00 |
16:48:06.95 |
-06:44:06.7 |
HIP 82183 |
32.41 |
| 2026-10-04 12:00 |
16:48:09.93 |
-06:44:34.7 |
HIP 82183 |
33.10 |
| 2026-10-05 00:00 |
16:48:12.96 |
-06:45:02.7 |
HIP 82183 |
33.80 |
| 2026-10-05 12:00 |
16:48:16.02 |
-06:45:30.7 |
HIP 82183 |
34.52 |
| 2026-10-06 00:00 |
16:48:19.12 |
-06:45:58.6 |
HIP 82183 |
35.24 |
| 2026-10-06 12:00 |
16:48:22.27 |
-06:46:26.5 |
HIP 82183 |
35.98 |
| 2026-10-07 00:00 |
16:48:25.45 |
-06:46:54.4 |
HIP 82183 |
36.72 |
| 2026-10-07 12:00 |
16:48:28.67 |
-06:47:22.2 |
HIP 82183 |
37.48 |
| 2026-10-08 00:00 |
16:48:31.93 |
-06:47:50.0 |
HIP 82183 |
38.25 |
| 2026-10-08 12:00 |
16:48:35.23 |
-06:48:17.7 |
HIP 82183 |
39.03 |
| 2026-10-09 00:00 |
16:48:38.56 |
-06:48:45.4 |
HIP 82183 |
39.82 |
| 2026-10-09 12:00 |
16:48:41.94 |
-06:49:13.0 |
HIP 82183 |
40.62 |
| 2026-10-10 00:00 |
16:48:45.35 |
-06:49:40.6 |
HIP 82183 |
41.43 |
| 2026-10-10 12:00 |
16:48:48.80 |
-06:50:08.1 |
HIP 82183 |
42.25 |
| 2026-10-11 00:00 |
16:48:52.29 |
-06:50:35.6 |
HIP 82183 |
43.09 |