メタデータ
| 項目 |
値 |
| Designation |
C/2015 VL62 (Lemmon-Yeung-PANSTARRS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2017-08-28T14:12:57.562560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:33:17Z |
| Obs used |
2115 |
| NEO |
- |
| M1 |
11.400 |
| K1 |
5.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-03-17.0000000 |
| e |
1.00203088 |
| q (au) |
2.720271 |
| a (au) |
-1339.452215 |
| i (deg) |
165.614083 |
| Ω (om, deg) |
94.546143 |
| ω (w, deg) |
128.359439 |
| M (ma, deg) |
-0.003309 |
等級
散乱 + 全体線形
$$
M_a = (9.551 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.551 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.822 |
| k |
0.999 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
11:57:00.46 |
-15:27:46.0 |
HIP 58408 |
30.58 |
| 2026-06-01 12:00 |
11:56:58.22 |
-15:27:10.8 |
HIP 58408 |
30.59 |
| 2026-06-02 00:00 |
11:56:56.02 |
-15:26:35.9 |
HIP 58408 |
30.61 |
| 2026-06-02 12:00 |
11:56:53.87 |
-15:26:01.2 |
HIP 58408 |
30.65 |
| 2026-06-03 00:00 |
11:56:51.76 |
-15:25:26.7 |
HIP 58408 |
30.70 |
| 2026-06-03 12:00 |
11:56:49.70 |
-15:24:52.5 |
HIP 58408 |
30.77 |
| 2026-06-04 00:00 |
11:56:47.68 |
-15:24:18.5 |
HIP 58408 |
30.84 |
| 2026-06-04 12:00 |
11:56:45.71 |
-15:23:44.7 |
HIP 58408 |
30.93 |
| 2026-06-05 00:00 |
11:56:43.78 |
-15:23:11.1 |
HIP 58408 |
31.03 |
| 2026-06-05 12:00 |
11:56:41.89 |
-15:22:37.8 |
HIP 58408 |
31.14 |
| 2026-06-06 00:00 |
11:56:40.05 |
-15:22:04.8 |
HIP 58408 |
31.25 |
| 2026-06-06 12:00 |
11:56:38.26 |
-15:21:31.9 |
HIP 58408 |
31.38 |
| 2026-06-07 00:00 |
11:56:36.51 |
-15:20:59.3 |
HIP 58408 |
31.51 |
| 2026-06-07 12:00 |
11:56:34.80 |
-15:20:27.0 |
HIP 58408 |
31.64 |
| 2026-06-08 00:00 |
11:56:33.14 |
-15:19:54.9 |
HIP 58408 |
31.79 |
| 2026-06-08 12:00 |
11:56:31.52 |
-15:19:23.1 |
HIP 58408 |
31.94 |
| 2026-06-09 00:00 |
11:56:29.95 |
-15:18:51.5 |
HIP 58408 |
32.09 |
| 2026-06-09 12:00 |
11:56:28.43 |
-15:18:20.2 |
HIP 58408 |
32.24 |
| 2026-06-10 00:00 |
11:56:26.95 |
-15:17:49.1 |
HIP 58408 |
32.40 |
| 2026-06-10 12:00 |
11:56:25.51 |
-15:17:18.3 |
HIP 58408 |
32.56 |
| 2026-06-11 00:00 |
11:56:24.12 |
-15:16:47.7 |
HIP 58408 |
32.73 |
| 2026-06-11 12:00 |
11:56:22.77 |
-15:16:17.4 |
HIP 58408 |
32.89 |
| 2026-06-12 00:00 |
11:56:21.47 |
-15:15:47.4 |
HIP 58408 |
33.06 |
| 2026-06-12 12:00 |
11:56:20.21 |
-15:15:17.6 |
HIP 58408 |
33.22 |
| 2026-06-13 00:00 |
11:56:19.00 |
-15:14:48.1 |
HIP 58408 |
33.39 |
| 2026-06-13 12:00 |
11:56:17.84 |
-15:14:18.9 |
HIP 58408 |
33.55 |
| 2026-06-14 00:00 |
11:56:16.72 |
-15:13:49.9 |
HIP 58408 |
33.72 |
| 2026-06-14 12:00 |
11:56:15.64 |
-15:13:21.2 |
HIP 58408 |
33.88 |
| 2026-06-15 00:00 |
11:56:14.61 |
-15:12:52.8 |
HIP 58408 |
34.04 |
| 2026-06-15 12:00 |
11:56:13.62 |
-15:12:24.7 |
HIP 58408 |
34.20 |
| 2026-06-16 00:00 |
11:56:12.68 |
-15:11:56.8 |
HIP 58408 |
34.35 |
| 2026-06-16 12:00 |
11:56:11.79 |
-15:11:29.2 |
HIP 58408 |
34.50 |
| 2026-06-17 00:00 |
11:56:10.94 |
-15:11:01.9 |
HIP 58408 |
34.65 |
| 2026-06-17 12:00 |
11:56:10.13 |
-15:10:34.9 |
HIP 58408 |
34.80 |
| 2026-06-18 00:00 |
11:56:09.37 |
-15:10:08.1 |
HIP 58408 |
34.94 |
| 2026-06-18 12:00 |
11:56:08.65 |
-15:09:41.7 |
HIP 58408 |
35.07 |
| 2026-06-19 00:00 |
11:56:07.98 |
-15:09:15.5 |
HIP 58408 |
35.21 |
| 2026-06-19 12:00 |
11:56:07.35 |
-15:08:49.6 |
HIP 58408 |
35.33 |
| 2026-06-20 00:00 |
11:56:06.77 |
-15:08:24.0 |
HIP 58408 |
35.46 |
| 2026-06-20 12:00 |
11:56:06.23 |
-15:07:58.7 |
HIP 58408 |
35.57 |
| 2026-06-21 00:00 |
11:56:05.73 |
-15:07:33.7 |
HIP 58408 |
35.68 |
| 2026-06-21 12:00 |
11:56:05.28 |
-15:07:08.9 |
HIP 58408 |
35.79 |
| 2026-06-22 00:00 |
11:56:04.87 |
-15:06:44.5 |
HIP 58408 |
35.89 |