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) |
| 2026-09-20 00:00 |
15:56:44.51 |
-21:11:17.5 |
HIP 78168 |
17.94 |
| 2026-09-20 12:00 |
15:56:56.34 |
-21:11:42.6 |
HIP 78168 |
16.37 |
| 2026-09-21 00:00 |
15:57:08.27 |
-21:12:07.9 |
HIP 78168 |
15.14 |
| 2026-09-21 12:00 |
15:57:20.31 |
-21:12:33.5 |
HIP 78168 |
14.37 |
| 2026-09-22 00:00 |
15:57:32.47 |
-21:12:59.5 |
HIP 78168 |
14.13 |
| 2026-09-22 12:00 |
15:57:44.73 |
-21:13:25.7 |
HIP 78168 |
14.48 |
| 2026-09-23 00:00 |
15:57:57.10 |
-21:13:52.2 |
HIP 78233 |
12.66 |
| 2026-09-23 12:00 |
15:58:09.58 |
-21:14:18.9 |
HIP 78233 |
10.78 |
| 2026-09-24 00:00 |
15:58:22.17 |
-21:14:46.0 |
HIP 78233 |
9.45 |
| 2026-09-24 12:00 |
15:58:34.86 |
-21:15:13.3 |
HIP 78233 |
8.94 |
| 2026-09-25 00:00 |
15:58:47.66 |
-21:15:40.9 |
HIP 78233 |
9.41 |
| 2026-09-25 12:00 |
15:59:00.57 |
-21:16:08.7 |
HIP 78233 |
10.76 |
| 2026-09-26 00:00 |
15:59:13.58 |
-21:16:36.8 |
HIP 78233 |
12.72 |
| 2026-09-26 12:00 |
15:59:26.70 |
-21:17:05.2 |
HIP 78233 |
15.07 |
| 2026-09-27 00:00 |
15:59:39.92 |
-21:17:33.8 |
HIP 78233 |
17.68 |
| 2026-09-27 12:00 |
15:59:53.24 |
-21:18:02.7 |
HIP 78467 |
19.03 |
| 2026-09-28 00:00 |
16:00:06.67 |
-21:18:31.8 |
HIP 78467 |
16.57 |
| 2026-09-28 12:00 |
16:00:20.20 |
-21:19:01.2 |
HIP 78467 |
14.38 |
| 2026-09-29 00:00 |
16:00:33.83 |
-21:19:30.8 |
HIP 78467 |
12.62 |
| 2026-09-29 12:00 |
16:00:47.56 |
-21:20:00.6 |
HIP 78467 |
11.49 |
| 2026-09-30 00:00 |
16:01:01.39 |
-21:20:30.7 |
HIP 78467 |
11.22 |
| 2026-09-30 12:00 |
16:01:15.33 |
-21:21:01.1 |
HIP 78467 |
11.89 |
| 2026-10-01 00:00 |
16:01:29.36 |
-21:21:31.6 |
HIP 78467 |
13.36 |
| 2026-10-01 12:00 |
16:01:43.49 |
-21:22:02.4 |
HIP 78467 |
15.44 |
| 2026-10-02 00:00 |
16:01:57.72 |
-21:22:33.4 |
HIP 78467 |
17.91 |
| 2026-10-02 12:00 |
16:02:12.05 |
-21:23:04.6 |
HIP 78467 |
20.66 |
| 2026-10-03 00:00 |
16:02:26.48 |
-21:23:36.1 |
HIP 78467 |
23.59 |
| 2026-10-03 12:00 |
16:02:41.00 |
-21:24:07.7 |
HIP 78467 |
26.65 |
| 2026-10-04 00:00 |
16:02:55.62 |
-21:24:39.6 |
HIP 78467 |
29.81 |
| 2026-10-04 12:00 |
16:03:10.34 |
-21:25:11.7 |
HIP 78708 |
32.82 |
| 2026-10-05 00:00 |
16:03:25.15 |
-21:25:44.0 |
HIP 78708 |
31.18 |
| 2026-10-05 12:00 |
16:03:40.06 |
-21:26:16.5 |
HIP 78708 |
29.85 |
| 2026-10-06 00:00 |
16:03:55.06 |
-21:26:49.2 |
HIP 78708 |
28.89 |
| 2026-10-06 12:00 |
16:04:10.15 |
-21:27:22.0 |
HIP 78708 |
28.33 |
| 2026-10-07 00:00 |
16:04:25.34 |
-21:27:55.1 |
HIP 78872 |
27.38 |
| 2026-10-07 12:00 |
16:04:40.62 |
-21:28:28.4 |
HIP 78872 |
24.24 |
| 2026-10-08 00:00 |
16:04:55.99 |
-21:29:01.8 |
HIP 78872 |
21.22 |
| 2026-10-08 12:00 |
16:05:11.46 |
-21:29:35.4 |
HIP 78872 |
18.40 |
| 2026-10-09 00:00 |
16:05:27.01 |
-21:30:09.2 |
HIP 78872 |
15.90 |
| 2026-10-09 12:00 |
16:05:42.65 |
-21:30:43.2 |
HIP 78872 |
13.92 |
| 2026-10-10 00:00 |
16:05:58.39 |
-21:31:17.4 |
HIP 78872 |
12.71 |
| 2026-10-10 12:00 |
16:06:14.21 |
-21:31:51.7 |
HIP 78872 |
12.53 |
| 2026-10-11 00:00 |
16:06:30.12 |
-21:32:26.1 |
HIP 78872 |
13.43 |