メタデータ
| 項目 |
値 |
| Designation |
437P/Lemmon-PANSTARRS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-11-24T04:41:12.096960Z |
| Orbit solution date (soln_date, UTC) |
2023-01-21T03:13:43Z |
| Obs used |
106 |
| NEO |
- |
| M1 |
7.700 |
| K1 |
20.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2011-10-24T06:09:06.048000Z |
| Discovery magnitude (MPC) |
20.90 V |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-09-29.0000000 |
| e |
0.25225853 |
| q (au) |
3.409730 |
| a (au) |
4.560038 |
| i (deg) |
3.690020 |
| Ω (om, deg) |
245.898008 |
| ω (w, deg) |
206.625064 |
| M (ma, deg) |
179.133437 |
等級
散乱 + 全体線形
$$
M_a = (12.398 + 4.084\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.398 |
| n |
4.084 |
| 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) |
| 2026-09-20 00:00 |
16:12:54.82 |
-20:37:02.1 |
HIP 79293 |
30.42 |
| 2026-09-20 12:00 |
16:13:10.65 |
-20:37:37.9 |
HIP 79606 |
31.56 |
| 2026-09-21 00:00 |
16:13:26.61 |
-20:38:13.8 |
HIP 79606 |
29.70 |
| 2026-09-21 12:00 |
16:13:42.69 |
-20:38:50.0 |
HIP 79606 |
28.21 |
| 2026-09-22 00:00 |
16:13:58.90 |
-20:39:26.5 |
HIP 79606 |
27.17 |
| 2026-09-22 12:00 |
16:14:15.23 |
-20:40:03.1 |
HIP 79599 |
26.59 |
| 2026-09-23 00:00 |
16:14:31.68 |
-20:40:39.9 |
HIP 79599 |
25.80 |
| 2026-09-23 12:00 |
16:14:48.25 |
-20:41:16.9 |
HIP 79599 |
25.57 |
| 2026-09-24 00:00 |
16:15:04.94 |
-20:41:54.2 |
HIP 79599 |
25.95 |
| 2026-09-24 12:00 |
16:15:21.75 |
-20:42:31.6 |
HIP 79599 |
26.92 |
| 2026-09-25 00:00 |
16:15:38.68 |
-20:43:09.2 |
HIP 79599 |
28.43 |
| 2026-09-25 12:00 |
16:15:55.73 |
-20:43:47.0 |
HIP 79599 |
30.42 |
| 2026-09-26 00:00 |
16:16:12.90 |
-20:44:25.0 |
HIP 79743 |
30.04 |
| 2026-09-26 12:00 |
16:16:30.18 |
-20:45:03.2 |
HIP 79743 |
29.18 |
| 2026-09-27 00:00 |
16:16:47.57 |
-20:45:41.5 |
HIP 79743 |
28.87 |
| 2026-09-27 12:00 |
16:17:05.08 |
-20:46:20.0 |
HIP 79743 |
29.16 |
| 2026-09-28 00:00 |
16:17:22.71 |
-20:46:58.6 |
HIP 79743 |
30.02 |
| 2026-09-28 12:00 |
16:17:40.45 |
-20:47:37.5 |
HIP 79743 |
31.43 |
| 2026-09-29 00:00 |
16:17:58.30 |
-20:48:16.4 |
HIP 80009 |
27.39 |
| 2026-09-29 12:00 |
16:18:16.27 |
-20:48:55.6 |
HIP 80009 |
23.24 |
| 2026-09-30 00:00 |
16:18:34.34 |
-20:49:34.8 |
HIP 80009 |
19.12 |
| 2026-09-30 12:00 |
16:18:52.53 |
-20:50:14.3 |
HIP 80009 |
15.05 |
| 2026-10-01 00:00 |
16:19:10.82 |
-20:50:53.8 |
HIP 80009 |
11.13 |
| 2026-10-01 12:00 |
16:19:29.23 |
-20:51:33.5 |
HIP 80009 |
7.66 |
| 2026-10-02 00:00 |
16:19:47.75 |
-20:52:13.3 |
HIP 80009 |
5.57 |
| 2026-10-02 12:00 |
16:20:06.37 |
-20:52:53.3 |
HIP 80009 |
6.48 |
| 2026-10-03 00:00 |
16:20:25.10 |
-20:53:33.3 |
HIP 80009 |
9.59 |
| 2026-10-03 12:00 |
16:20:43.94 |
-20:54:13.5 |
HIP 80009 |
13.49 |
| 2026-10-04 00:00 |
16:21:02.88 |
-20:54:53.8 |
HIP 80009 |
17.67 |
| 2026-10-04 12:00 |
16:21:21.93 |
-20:55:34.3 |
HIP 80009 |
21.99 |
| 2026-10-05 00:00 |
16:21:41.09 |
-20:56:14.8 |
HIP 80009 |
26.39 |
| 2026-10-05 12:00 |
16:22:00.35 |
-20:56:55.4 |
HIP 80276 |
26.01 |
| 2026-10-06 00:00 |
16:22:19.71 |
-20:57:36.1 |
HIP 80276 |
22.82 |
| 2026-10-06 12:00 |
16:22:39.18 |
-20:58:16.9 |
HIP 80276 |
20.16 |
| 2026-10-07 00:00 |
16:22:58.75 |
-20:58:57.8 |
HIP 80276 |
18.27 |
| 2026-10-07 12:00 |
16:23:18.42 |
-20:59:38.8 |
HIP 80276 |
17.43 |
| 2026-10-08 00:00 |
16:23:38.19 |
-21:00:19.9 |
HIP 80276 |
17.81 |
| 2026-10-08 12:00 |
16:23:58.06 |
-21:01:01.0 |
HIP 80276 |
19.35 |
| 2026-10-09 00:00 |
16:24:18.03 |
-21:01:42.2 |
HIP 80276 |
21.82 |
| 2026-10-09 12:00 |
16:24:38.10 |
-21:02:23.5 |
HIP 80276 |
24.96 |
| 2026-10-10 00:00 |
16:24:58.27 |
-21:03:04.8 |
HIP 80276 |
28.56 |
| 2026-10-10 12:00 |
16:25:18.53 |
-21:03:46.2 |
HIP 80276 |
32.48 |
| 2026-10-11 00:00 |
16:25:38.89 |
-21:04:27.6 |
HIP 80276 |
36.62 |