メタデータ
| 項目 |
値 |
| Designation |
C/2014 L5 (Lemmon) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2014-11-26T09:05:17.537280Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:55Z |
| Obs used |
75 |
| NEO |
- |
| M1 |
6.900 |
| K1 |
11.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2014-09-05.0000000 |
| e |
1.00264316 |
| q (au) |
6.203169 |
| a (au) |
-2346.877572 |
| i (deg) |
122.805134 |
| Ω (om, deg) |
35.683472 |
| ω (w, deg) |
45.611210 |
| M (ma, deg) |
-0.000714 |
等級
散乱 + 全体線形
$$
M_a = (3.237 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
3.237 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
14:52:22.43 |
-03:05:51.5 |
HIP 72614 |
23.50 |
| 2026-07-29 12:00 |
14:52:21.18 |
-03:06:11.8 |
HIP 72614 |
23.15 |
| 2026-07-30 00:00 |
14:52:19.96 |
-03:06:32.2 |
HIP 72614 |
22.80 |
| 2026-07-30 12:00 |
14:52:18.78 |
-03:06:52.9 |
HIP 72614 |
22.48 |
| 2026-07-31 00:00 |
14:52:17.64 |
-03:07:13.7 |
HIP 72614 |
22.16 |
| 2026-07-31 12:00 |
14:52:16.53 |
-03:07:34.6 |
HIP 72614 |
21.86 |
| 2026-08-01 00:00 |
14:52:15.47 |
-03:07:55.8 |
HIP 72614 |
21.58 |
| 2026-08-01 12:00 |
14:52:14.45 |
-03:08:17.1 |
HIP 72614 |
21.31 |
| 2026-08-02 00:00 |
14:52:13.47 |
-03:08:38.5 |
HIP 72614 |
21.05 |
| 2026-08-02 12:00 |
14:52:12.53 |
-03:09:00.2 |
HIP 72614 |
20.81 |
| 2026-08-03 00:00 |
14:52:11.62 |
-03:09:22.0 |
HIP 72614 |
20.59 |
| 2026-08-03 12:00 |
14:52:10.76 |
-03:09:44.0 |
HIP 72614 |
20.38 |
| 2026-08-04 00:00 |
14:52:09.94 |
-03:10:06.1 |
HIP 72614 |
20.20 |
| 2026-08-04 12:00 |
14:52:09.15 |
-03:10:28.4 |
HIP 72614 |
20.02 |
| 2026-08-05 00:00 |
14:52:08.41 |
-03:10:50.9 |
HIP 72614 |
19.87 |
| 2026-08-05 12:00 |
14:52:07.70 |
-03:11:13.5 |
HIP 72614 |
19.73 |
| 2026-08-06 00:00 |
14:52:07.04 |
-03:11:36.3 |
HIP 72614 |
19.61 |
| 2026-08-06 12:00 |
14:52:06.41 |
-03:11:59.3 |
HIP 72740 |
19.31 |
| 2026-08-07 00:00 |
14:52:05.82 |
-03:12:22.4 |
HIP 72740 |
18.95 |
| 2026-08-07 12:00 |
14:52:05.28 |
-03:12:45.7 |
HIP 72740 |
18.59 |
| 2026-08-08 00:00 |
14:52:04.77 |
-03:13:09.1 |
HIP 72740 |
18.22 |
| 2026-08-08 12:00 |
14:52:04.30 |
-03:13:32.7 |
HIP 72740 |
17.86 |
| 2026-08-09 00:00 |
14:52:03.87 |
-03:13:56.4 |
HIP 72740 |
17.49 |
| 2026-08-09 12:00 |
14:52:03.48 |
-03:14:20.3 |
HIP 72740 |
17.12 |
| 2026-08-10 00:00 |
14:52:03.13 |
-03:14:44.3 |
HIP 72740 |
16.74 |
| 2026-08-10 12:00 |
14:52:02.82 |
-03:15:08.5 |
HIP 72740 |
16.37 |
| 2026-08-11 00:00 |
14:52:02.55 |
-03:15:32.9 |
HIP 72740 |
15.99 |
| 2026-08-11 12:00 |
14:52:02.32 |
-03:15:57.3 |
HIP 72740 |
15.60 |
| 2026-08-12 00:00 |
14:52:02.13 |
-03:16:22.0 |
HIP 72740 |
15.22 |
| 2026-08-12 12:00 |
14:52:01.97 |
-03:16:46.8 |
HIP 72740 |
14.83 |
| 2026-08-13 00:00 |
14:52:01.86 |
-03:17:11.7 |
HIP 72740 |
14.43 |
| 2026-08-13 12:00 |
14:52:01.78 |
-03:17:36.7 |
HIP 72740 |
14.04 |
| 2026-08-14 00:00 |
14:52:01.75 |
-03:18:01.9 |
HIP 72740 |
13.64 |
| 2026-08-14 12:00 |
14:52:01.75 |
-03:18:27.3 |
HIP 72740 |
13.23 |
| 2026-08-15 00:00 |
14:52:01.79 |
-03:18:52.7 |
HIP 72740 |
12.82 |
| 2026-08-15 12:00 |
14:52:01.87 |
-03:19:18.3 |
HIP 72740 |
12.41 |
| 2026-08-16 00:00 |
14:52:01.99 |
-03:19:44.1 |
HIP 72740 |
12.00 |
| 2026-08-16 12:00 |
14:52:02.15 |
-03:20:09.9 |
HIP 72740 |
11.57 |
| 2026-08-17 00:00 |
14:52:02.35 |
-03:20:35.9 |
HIP 72740 |
11.15 |
| 2026-08-17 12:00 |
14:52:02.58 |
-03:21:02.1 |
HIP 72740 |
10.72 |
| 2026-08-18 00:00 |
14:52:02.86 |
-03:21:28.3 |
HIP 72740 |
10.29 |
| 2026-08-18 12:00 |
14:52:03.17 |
-03:21:54.7 |
HIP 72740 |
9.85 |
| 2026-08-19 00:00 |
14:52:03.52 |
-03:22:21.2 |
HIP 72740 |
9.40 |