メタデータ
| 項目 |
値 |
| Designation |
C/2012 LP26 (Palomar) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2015-08-16T13:45:24.307200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:17Z |
| Obs used |
439 |
| NEO |
- |
| M1 |
9.400 |
| K1 |
6.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-10-09.0000000 |
| e |
0.99927976 |
| q (au) |
6.536055 |
| a (au) |
9074.782001 |
| i (deg) |
25.379849 |
| Ω (om, deg) |
153.987248 |
| ω (w, deg) |
145.153210 |
| M (ma, deg) |
0.000061 |
等級
散乱 + 全体線形
$$
M_a = (8.956 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.956 |
| n |
2.000 |
| gf |
0.835 |
| gb |
-1.000 |
| k |
1.000 |
| δ90 |
6.727 |
| 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 |
03:49:44.88 |
-04:30:06.4 |
HIP 17987 |
15.86 |
| 2026-06-01 12:00 |
03:49:50.42 |
-04:29:56.1 |
HIP 17987 |
14.73 |
| 2026-06-02 00:00 |
03:49:55.96 |
-04:29:46.1 |
HIP 17987 |
13.64 |
| 2026-06-02 12:00 |
03:50:01.48 |
-04:29:36.4 |
HIP 17987 |
12.62 |
| 2026-06-03 00:00 |
03:50:07.00 |
-04:29:27.0 |
HIP 17987 |
11.66 |
| 2026-06-03 12:00 |
03:50:12.51 |
-04:29:17.8 |
HIP 17987 |
10.80 |
| 2026-06-04 00:00 |
03:50:18.01 |
-04:29:08.9 |
HIP 17987 |
10.05 |
| 2026-06-04 12:00 |
03:50:23.51 |
-04:29:00.3 |
HIP 17987 |
9.44 |
| 2026-06-05 00:00 |
03:50:28.99 |
-04:28:52.0 |
HIP 17987 |
9.00 |
| 2026-06-05 12:00 |
03:50:34.46 |
-04:28:44.0 |
HIP 17987 |
8.75 |
| 2026-06-06 00:00 |
03:50:39.93 |
-04:28:36.2 |
HIP 17987 |
8.71 |
| 2026-06-06 12:00 |
03:50:45.38 |
-04:28:28.7 |
HIP 17987 |
8.88 |
| 2026-06-07 00:00 |
03:50:50.82 |
-04:28:21.5 |
HIP 17987 |
9.24 |
| 2026-06-07 12:00 |
03:50:56.25 |
-04:28:14.6 |
HIP 17987 |
9.77 |
| 2026-06-08 00:00 |
03:51:01.67 |
-04:28:07.9 |
HIP 17987 |
10.45 |
| 2026-06-08 12:00 |
03:51:07.08 |
-04:28:01.6 |
HIP 17987 |
11.24 |
| 2026-06-09 00:00 |
03:51:12.48 |
-04:27:55.5 |
HIP 17987 |
12.13 |
| 2026-06-09 12:00 |
03:51:17.86 |
-04:27:49.7 |
HIP 17987 |
13.09 |
| 2026-06-10 00:00 |
03:51:23.24 |
-04:27:44.2 |
HIP 17987 |
14.11 |
| 2026-06-10 12:00 |
03:51:28.60 |
-04:27:39.0 |
HIP 17987 |
15.18 |
| 2026-06-11 00:00 |
03:51:33.94 |
-04:27:34.0 |
HIP 17987 |
16.28 |
| 2026-06-11 12:00 |
03:51:39.28 |
-04:27:29.4 |
HIP 17987 |
17.41 |
| 2026-06-12 00:00 |
03:51:44.60 |
-04:27:25.0 |
HIP 17987 |
18.56 |
| 2026-06-12 12:00 |
03:51:49.91 |
-04:27:20.9 |
HIP 18164 |
18.17 |
| 2026-06-13 00:00 |
03:51:55.20 |
-04:27:17.1 |
HIP 18164 |
16.89 |
| 2026-06-13 12:00 |
03:52:00.48 |
-04:27:13.6 |
HIP 18164 |
15.62 |
| 2026-06-14 00:00 |
03:52:05.74 |
-04:27:10.4 |
HIP 18164 |
14.36 |
| 2026-06-14 12:00 |
03:52:10.99 |
-04:27:07.5 |
HIP 18164 |
13.12 |
| 2026-06-15 00:00 |
03:52:16.22 |
-04:27:04.8 |
HIP 18164 |
11.90 |
| 2026-06-15 12:00 |
03:52:21.44 |
-04:27:02.4 |
HIP 18164 |
10.71 |
| 2026-06-16 00:00 |
03:52:26.64 |
-04:27:00.4 |
HIP 18164 |
9.55 |
| 2026-06-16 12:00 |
03:52:31.83 |
-04:26:58.6 |
HIP 18164 |
8.44 |
| 2026-06-17 00:00 |
03:52:37.00 |
-04:26:57.1 |
HIP 18164 |
7.39 |
| 2026-06-17 12:00 |
03:52:42.15 |
-04:26:55.8 |
HIP 18164 |
6.44 |
| 2026-06-18 00:00 |
03:52:47.29 |
-04:26:54.9 |
HIP 18164 |
5.63 |
| 2026-06-18 12:00 |
03:52:52.40 |
-04:26:54.3 |
HIP 18164 |
5.02 |
| 2026-06-19 00:00 |
03:52:57.50 |
-04:26:53.9 |
HIP 18164 |
4.69 |
| 2026-06-19 12:00 |
03:53:02.58 |
-04:26:53.8 |
HIP 18164 |
4.70 |
| 2026-06-20 00:00 |
03:53:07.65 |
-04:26:54.1 |
HIP 18164 |
5.04 |
| 2026-06-20 12:00 |
03:53:12.69 |
-04:26:54.6 |
HIP 18164 |
5.66 |
| 2026-06-21 00:00 |
03:53:17.72 |
-04:26:55.4 |
HIP 18164 |
6.46 |
| 2026-06-21 12:00 |
03:53:22.72 |
-04:26:56.4 |
HIP 18164 |
7.38 |
| 2026-06-22 00:00 |
03:53:27.71 |
-04:26:57.8 |
HIP 18164 |
8.39 |