メタデータ
| 項目 |
値 |
| Designation |
343P/NEAT-LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-01-27T05:13:16.026240Z |
| Orbit solution date (soln_date, UTC) |
2024-08-11T00:12:24Z |
| Obs used |
324 |
| NEO |
- |
| M1 |
5.600 |
| K1 |
29.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-10-15.0000000 |
| e |
0.58417160 |
| q (au) |
2.276535 |
| a (au) |
5.474699 |
| i (deg) |
5.584452 |
| Ω (om, deg) |
257.265816 |
| ω (w, deg) |
137.584514 |
| M (ma, deg) |
267.652804 |
等級
散乱 + 全体線形
$$
M_a = (10.056 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.056 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2016-06-11 |
2017-01-23 |
+9.4520 |
-3.557 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
16:07:04.06 |
-22:18:17.8 |
HIP 78977 |
15.03 |
| 2026-06-01 12:00 |
16:06:49.64 |
-22:17:31.7 |
HIP 78977 |
15.37 |
| 2026-06-02 00:00 |
16:06:35.25 |
-22:16:45.6 |
HIP 78977 |
16.43 |
| 2026-06-02 12:00 |
16:06:20.89 |
-22:15:59.3 |
HIP 78977 |
18.08 |
| 2026-06-03 00:00 |
16:06:06.54 |
-22:15:13.0 |
HIP 78977 |
20.17 |
| 2026-06-03 12:00 |
16:05:52.23 |
-22:14:26.6 |
HIP 78977 |
22.58 |
| 2026-06-04 00:00 |
16:05:37.94 |
-22:13:40.1 |
HIP 78847 |
23.38 |
| 2026-06-04 12:00 |
16:05:23.67 |
-22:12:53.6 |
HIP 78847 |
23.03 |
| 2026-06-05 00:00 |
16:05:09.45 |
-22:12:07.0 |
HIP 78708 |
22.54 |
| 2026-06-05 12:00 |
16:04:55.25 |
-22:11:20.3 |
HIP 78708 |
19.82 |
| 2026-06-06 00:00 |
16:04:41.09 |
-22:10:33.7 |
HIP 78708 |
17.33 |
| 2026-06-06 12:00 |
16:04:26.96 |
-22:09:46.9 |
HIP 78708 |
15.18 |
| 2026-06-07 00:00 |
16:04:12.88 |
-22:09:00.2 |
HIP 78708 |
13.55 |
| 2026-06-07 12:00 |
16:03:58.83 |
-22:08:13.4 |
HIP 78708 |
12.61 |
| 2026-06-08 00:00 |
16:03:44.83 |
-22:07:26.6 |
HIP 78708 |
12.52 |
| 2026-06-08 12:00 |
16:03:30.87 |
-22:06:39.7 |
HIP 78708 |
13.30 |
| 2026-06-09 00:00 |
16:03:16.96 |
-22:05:52.9 |
HIP 78708 |
14.79 |
| 2026-06-09 12:00 |
16:03:03.09 |
-22:05:06.1 |
HIP 78708 |
16.80 |
| 2026-06-10 00:00 |
16:02:49.27 |
-22:04:19.2 |
HIP 78530 |
13.63 |
| 2026-06-10 12:00 |
16:02:35.51 |
-22:03:32.4 |
HIP 78530 |
10.41 |
| 2026-06-11 00:00 |
16:02:21.80 |
-22:02:45.6 |
HIP 78530 |
7.27 |
| 2026-06-11 12:00 |
16:02:08.14 |
-22:01:58.8 |
HIP 78530 |
4.32 |
| 2026-06-12 00:00 |
16:01:54.54 |
-22:01:12.1 |
HIP 78530 |
2.39 |
| 2026-06-12 12:00 |
16:01:41.00 |
-22:00:25.4 |
HIP 78530 |
3.72 |
| 2026-06-13 00:00 |
16:01:27.52 |
-21:59:38.7 |
HIP 78530 |
6.53 |
| 2026-06-13 12:00 |
16:01:14.10 |
-21:58:52.1 |
HIP 78530 |
9.59 |
| 2026-06-14 00:00 |
16:01:00.74 |
-21:58:05.6 |
HIP 78472 |
12.12 |
| 2026-06-14 12:00 |
16:00:47.45 |
-21:57:19.1 |
HIP 78472 |
13.64 |
| 2026-06-15 00:00 |
16:00:34.23 |
-21:56:32.6 |
HIP 78472 |
15.66 |
| 2026-06-15 12:00 |
16:00:21.08 |
-21:55:46.3 |
HIP 78472 |
18.00 |
| 2026-06-16 00:00 |
16:00:08.00 |
-21:55:00.0 |
HIP 78472 |
20.54 |
| 2026-06-16 12:00 |
15:59:54.99 |
-21:54:13.9 |
HIP 78472 |
23.21 |
| 2026-06-17 00:00 |
15:59:42.06 |
-21:53:27.8 |
HIP 78472 |
25.97 |
| 2026-06-17 12:00 |
15:59:29.20 |
-21:52:41.8 |
HIP 78472 |
28.78 |
| 2026-06-18 00:00 |
15:59:16.42 |
-21:51:56.0 |
HIP 78233 |
29.94 |
| 2026-06-18 12:00 |
15:59:03.72 |
-21:51:10.2 |
HIP 78233 |
28.26 |
| 2026-06-19 00:00 |
15:58:51.11 |
-21:50:24.6 |
HIP 78233 |
26.83 |
| 2026-06-19 12:00 |
15:58:38.57 |
-21:49:39.1 |
HIP 78233 |
25.68 |
| 2026-06-20 00:00 |
15:58:26.12 |
-21:48:53.7 |
HIP 78123 |
22.94 |
| 2026-06-20 12:00 |
15:58:13.76 |
-21:48:08.5 |
HIP 78123 |
20.25 |
| 2026-06-21 00:00 |
15:58:01.48 |
-21:47:23.4 |
HIP 78123 |
17.65 |
| 2026-06-21 12:00 |
15:57:49.29 |
-21:46:38.5 |
HIP 78123 |
15.20 |
| 2026-06-22 00:00 |
15:57:37.19 |
-21:45:53.7 |
HIP 78123 |
12.97 |