メタデータ
| 項目 |
値 |
| Designation |
514P/Lemmon-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2025-11-23T16:24:19.644480Z |
| Orbit solution date (soln_date, UTC) |
2026-03-14T17:50:16Z |
| Obs used |
172 |
| NEO |
- |
| M1 |
7.500 |
| K1 |
22.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2025-09-19T07:05:17.376000Z |
| Discovery magnitude (MPC) |
19.90 G |
| Discovery observatory (MPC) |
W62 · Comet Hunter Observatory2, New Ringgold |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2022-06-01.0000000 |
| e |
0.35903203 |
| q (au) |
2.918667 |
| a (au) |
4.553530 |
| i (deg) |
6.499970 |
| Ω (om, deg) |
321.641424 |
| ω (w, deg) |
89.136768 |
| M (ma, deg) |
231.008591 |
等級
散乱 + 全体線形
$$
M_a = (13.698 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.698 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.735 |
| k |
0.800 |
| 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 |
07:25:04.20 |
+25:05:36.3 |
HIP 35846 |
21.81 |
| 2026-07-29 12:00 |
07:25:51.11 |
+25:03:45.6 |
HIP 36268 |
29.96 |
| 2026-07-30 00:00 |
07:26:37.94 |
+25:01:54.3 |
HIP 36268 |
19.28 |
| 2026-07-30 12:00 |
07:27:24.70 |
+25:00:02.4 |
HIP 36268 |
8.84 |
| 2026-07-31 00:00 |
07:28:11.39 |
+24:58:09.9 |
HIP 36268 |
3.99 |
| 2026-07-31 12:00 |
07:28:57.99 |
+24:56:16.7 |
HIP 36268 |
13.57 |
| 2026-08-01 00:00 |
07:29:44.52 |
+24:54:22.8 |
HIP 36326 |
21.20 |
| 2026-08-01 12:00 |
07:30:30.98 |
+24:52:28.4 |
HIP 36326 |
28.48 |
| 2026-08-02 00:00 |
07:31:17.35 |
+24:50:33.3 |
HIP 36623 |
22.03 |
| 2026-08-02 12:00 |
07:32:03.65 |
+24:48:37.7 |
HIP 36623 |
18.53 |
| 2026-08-03 00:00 |
07:32:49.86 |
+24:46:41.4 |
HIP 36623 |
20.73 |
| 2026-08-03 12:00 |
07:33:36.00 |
+24:44:44.5 |
HIP 36874 |
21.04 |
| 2026-08-04 00:00 |
07:34:22.06 |
+24:42:47.0 |
HIP 36874 |
15.89 |
| 2026-08-04 12:00 |
07:35:08.03 |
+24:40:48.9 |
HIP 36874 |
16.99 |
| 2026-08-05 00:00 |
07:35:53.93 |
+24:38:50.3 |
HIP 36874 |
23.45 |
| 2026-08-05 12:00 |
07:36:39.75 |
+24:36:51.0 |
HIP 37180 |
23.56 |
| 2026-08-06 00:00 |
07:37:25.48 |
+24:34:51.2 |
HIP 37180 |
14.27 |
| 2026-08-06 12:00 |
07:38:11.13 |
+24:32:50.8 |
HIP 37180 |
8.75 |
| 2026-08-07 00:00 |
07:38:56.69 |
+24:30:49.8 |
HIP 37180 |
13.14 |
| 2026-08-07 12:00 |
07:39:42.18 |
+24:28:48.3 |
HIP 37269 |
16.91 |
| 2026-08-08 00:00 |
07:40:27.58 |
+24:26:46.2 |
HIP 37269 |
21.83 |
| 2026-08-08 12:00 |
07:41:12.89 |
+24:24:43.6 |
HIP 37517 |
24.24 |
| 2026-08-09 00:00 |
07:41:58.12 |
+24:22:40.4 |
HIP 37517 |
19.65 |
| 2026-08-09 12:00 |
07:42:43.26 |
+24:20:36.7 |
HIP 37691 |
18.06 |
| 2026-08-10 00:00 |
07:43:28.31 |
+24:18:32.5 |
HIP 37691 |
7.82 |
| 2026-08-10 12:00 |
07:44:13.27 |
+24:16:27.8 |
HIP 37691 |
3.92 |
| 2026-08-11 00:00 |
07:44:58.15 |
+24:14:22.5 |
HIP 37788 |
4.88 |
| 2026-08-11 12:00 |
07:45:42.94 |
+24:12:16.7 |
HIP 37788 |
12.73 |
| 2026-08-12 00:00 |
07:46:27.63 |
+24:10:10.4 |
HIP 37788 |
22.73 |
| 2026-08-12 12:00 |
07:47:12.24 |
+24:08:03.6 |
HIP 37988 |
28.24 |
| 2026-08-13 00:00 |
07:47:56.75 |
+24:05:56.4 |
HIP 38201 |
24.85 |
| 2026-08-13 12:00 |
07:48:41.18 |
+24:03:48.6 |
HIP 38201 |
17.59 |
| 2026-08-14 00:00 |
07:49:25.50 |
+24:01:40.4 |
HIP 38201 |
14.68 |
| 2026-08-14 12:00 |
07:50:09.74 |
+23:59:31.7 |
HIP 38287 |
12.23 |
| 2026-08-15 00:00 |
07:50:53.88 |
+23:57:22.5 |
HIP 38287 |
12.70 |
| 2026-08-15 12:00 |
07:51:37.92 |
+23:55:12.9 |
HIP 38287 |
19.62 |
| 2026-08-16 00:00 |
07:52:21.87 |
+23:53:02.8 |
HIP 38287 |
28.63 |
| 2026-08-16 12:00 |
07:53:05.73 |
+23:50:52.3 |
HIP 38603 |
25.93 |
| 2026-08-17 00:00 |
07:53:49.48 |
+23:48:41.3 |
HIP 38603 |
19.31 |
| 2026-08-17 12:00 |
07:54:33.14 |
+23:46:30.0 |
HIP 38603 |
16.83 |
| 2026-08-18 00:00 |
07:55:16.70 |
+23:44:18.1 |
HIP 38755 |
10.90 |
| 2026-08-18 12:00 |
07:56:00.16 |
+23:42:05.9 |
HIP 38755 |
0.79 |
| 2026-08-19 00:00 |
07:56:43.52 |
+23:39:53.3 |
HIP 38761 |
8.83 |