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) |
| 2026-07-29 00:00 |
15:59:13.05 |
-20:09:20.6 |
HIP 78420 |
26.12 |
| 2026-07-29 12:00 |
15:59:11.80 |
-20:09:10.5 |
HIP 78420 |
26.45 |
| 2026-07-30 00:00 |
15:59:10.73 |
-20:09:01.0 |
HIP 78420 |
26.74 |
| 2026-07-30 12:00 |
15:59:09.84 |
-20:08:52.0 |
HIP 78420 |
27.00 |
| 2026-07-31 00:00 |
15:59:09.14 |
-20:08:43.6 |
HIP 78420 |
27.21 |
| 2026-07-31 12:00 |
15:59:08.63 |
-20:08:35.7 |
HIP 78420 |
27.39 |
| 2026-08-01 00:00 |
15:59:08.30 |
-20:08:28.4 |
HIP 78420 |
27.53 |
| 2026-08-01 12:00 |
15:59:08.15 |
-20:08:21.6 |
HIP 78420 |
27.63 |
| 2026-08-02 00:00 |
15:59:08.18 |
-20:08:15.4 |
HIP 78420 |
27.70 |
| 2026-08-02 12:00 |
15:59:08.39 |
-20:08:09.8 |
HIP 78420 |
27.73 |
| 2026-08-03 00:00 |
15:59:08.79 |
-20:08:04.7 |
HIP 78420 |
27.72 |
| 2026-08-03 12:00 |
15:59:09.37 |
-20:08:00.1 |
HIP 78420 |
27.67 |
| 2026-08-04 00:00 |
15:59:10.14 |
-20:07:56.1 |
HIP 78420 |
27.59 |
| 2026-08-04 12:00 |
15:59:11.08 |
-20:07:52.7 |
HIP 78420 |
27.47 |
| 2026-08-05 00:00 |
15:59:12.21 |
-20:07:49.8 |
HIP 78420 |
27.31 |
| 2026-08-05 12:00 |
15:59:13.52 |
-20:07:47.4 |
HIP 78420 |
27.12 |
| 2026-08-06 00:00 |
15:59:15.01 |
-20:07:45.6 |
HIP 78420 |
26.90 |
| 2026-08-06 12:00 |
15:59:16.68 |
-20:07:44.4 |
HIP 78420 |
26.64 |
| 2026-08-07 00:00 |
15:59:18.54 |
-20:07:43.6 |
HIP 78420 |
26.35 |
| 2026-08-07 12:00 |
15:59:20.58 |
-20:07:43.5 |
HIP 78420 |
26.03 |
| 2026-08-08 00:00 |
15:59:22.79 |
-20:07:43.9 |
HIP 78420 |
25.68 |
| 2026-08-08 12:00 |
15:59:25.19 |
-20:07:44.8 |
HIP 78420 |
25.30 |
| 2026-08-09 00:00 |
15:59:27.77 |
-20:07:46.3 |
HIP 78420 |
24.90 |
| 2026-08-09 12:00 |
15:59:30.53 |
-20:07:48.3 |
HIP 78420 |
24.47 |
| 2026-08-10 00:00 |
15:59:33.47 |
-20:07:50.8 |
HIP 78420 |
24.02 |
| 2026-08-10 12:00 |
15:59:36.59 |
-20:07:53.9 |
HIP 78420 |
23.54 |
| 2026-08-11 00:00 |
15:59:39.89 |
-20:07:57.5 |
HIP 78420 |
23.05 |
| 2026-08-11 12:00 |
15:59:43.37 |
-20:08:01.7 |
HIP 78420 |
22.55 |
| 2026-08-12 00:00 |
15:59:47.03 |
-20:08:06.4 |
HIP 78420 |
22.03 |
| 2026-08-12 12:00 |
15:59:50.86 |
-20:08:11.6 |
HIP 78420 |
21.51 |
| 2026-08-13 00:00 |
15:59:54.88 |
-20:08:17.4 |
HIP 78420 |
20.99 |
| 2026-08-13 12:00 |
15:59:59.07 |
-20:08:23.6 |
HIP 78420 |
20.47 |
| 2026-08-14 00:00 |
16:00:03.44 |
-20:08:30.4 |
HIP 78420 |
19.97 |
| 2026-08-14 12:00 |
16:00:07.99 |
-20:08:37.8 |
HIP 78420 |
19.48 |
| 2026-08-15 00:00 |
16:00:12.72 |
-20:08:45.6 |
HIP 78420 |
19.02 |
| 2026-08-15 12:00 |
16:00:17.62 |
-20:08:53.9 |
HIP 78420 |
18.61 |
| 2026-08-16 00:00 |
16:00:22.69 |
-20:09:02.8 |
HIP 78420 |
18.24 |
| 2026-08-16 12:00 |
16:00:27.94 |
-20:09:12.2 |
HIP 78420 |
17.93 |
| 2026-08-17 00:00 |
16:00:33.37 |
-20:09:22.0 |
HIP 78420 |
17.69 |
| 2026-08-17 12:00 |
16:00:38.97 |
-20:09:32.4 |
HIP 78420 |
17.54 |
| 2026-08-18 00:00 |
16:00:44.74 |
-20:09:43.3 |
HIP 78420 |
17.49 |
| 2026-08-18 12:00 |
16:00:50.69 |
-20:09:54.6 |
HIP 78420 |
17.54 |
| 2026-08-19 00:00 |
16:00:56.80 |
-20:10:06.5 |
HIP 78420 |
17.71 |