メタデータ
| 項目 |
値 |
| Designation |
376P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2005-08-15T01:24:58.645440Z |
| Orbit solution date (soln_date, UTC) |
2024-09-11T13:42:35Z |
| Obs used |
478 |
| NEO |
- |
| M1 |
9.500 |
| K1 |
14.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2019-04-22T11:32:11.097600Z |
| Discovery magnitude (MPC) |
18.04 o |
| Discovery observatory (MPC) |
T08 · ATLAS-MLO, Mauna Loa |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2010-09-26.0000000 |
| e |
0.51484893 |
| q (au) |
2.841707 |
| a (au) |
5.857366 |
| i (deg) |
1.188860 |
| Ω (om, deg) |
315.159432 |
| ω (w, deg) |
285.484686 |
| M (ma, deg) |
129.871457 |
等級
散乱 + 全体線形
$$
M_a = (9.056 + 5.725\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
9.056 |
| n |
5.725 |
| gf |
0.999 |
| gb |
-0.879 |
| 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 |
| 2018-01-16 |
2019-03-12 |
+7.8827 |
-3.835 |
| 2019-03-12 |
2021-09-04 |
-3.5096 |
+2.097 |
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 |
04:13:27.74 |
+22:22:36.8 |
HIP 19672 |
8.72 |
| 2026-09-20 12:00 |
04:13:25.51 |
+22:22:34.9 |
HIP 19672 |
8.23 |
| 2026-09-21 00:00 |
04:13:23.16 |
+22:22:32.7 |
HIP 19672 |
7.72 |
| 2026-09-21 12:00 |
04:13:20.68 |
+22:22:30.2 |
HIP 19672 |
7.18 |
| 2026-09-22 00:00 |
04:13:18.09 |
+22:22:27.4 |
HIP 19672 |
6.63 |
| 2026-09-22 12:00 |
04:13:15.36 |
+22:22:24.2 |
HIP 19672 |
6.07 |
| 2026-09-23 00:00 |
04:13:12.52 |
+22:22:20.7 |
HIP 19672 |
5.50 |
| 2026-09-23 12:00 |
04:13:09.55 |
+22:22:16.9 |
HIP 19672 |
4.93 |
| 2026-09-24 00:00 |
04:13:06.46 |
+22:22:12.7 |
HIP 19672 |
4.37 |
| 2026-09-24 12:00 |
04:13:03.25 |
+22:22:08.3 |
HIP 19672 |
3.85 |
| 2026-09-25 00:00 |
04:12:59.91 |
+22:22:03.5 |
HIP 19672 |
3.40 |
| 2026-09-25 12:00 |
04:12:56.45 |
+22:21:58.4 |
HIP 19672 |
3.08 |
| 2026-09-26 00:00 |
04:12:52.87 |
+22:21:52.9 |
HIP 19672 |
2.95 |
| 2026-09-26 12:00 |
04:12:49.17 |
+22:21:47.2 |
HIP 19672 |
3.06 |
| 2026-09-27 00:00 |
04:12:45.34 |
+22:21:41.1 |
HIP 19672 |
3.41 |
| 2026-09-27 12:00 |
04:12:41.39 |
+22:21:34.7 |
HIP 19672 |
3.95 |
| 2026-09-28 00:00 |
04:12:37.33 |
+22:21:27.9 |
HIP 19672 |
4.64 |
| 2026-09-28 12:00 |
04:12:33.14 |
+22:21:20.9 |
HIP 19672 |
5.43 |
| 2026-09-29 00:00 |
04:12:28.82 |
+22:21:13.5 |
HIP 19672 |
6.30 |
| 2026-09-29 12:00 |
04:12:24.39 |
+22:21:05.8 |
HIP 19672 |
7.23 |
| 2026-09-30 00:00 |
04:12:19.84 |
+22:20:57.7 |
HIP 19672 |
8.22 |
| 2026-09-30 12:00 |
04:12:15.17 |
+22:20:49.3 |
HIP 19672 |
9.24 |
| 2026-10-01 00:00 |
04:12:10.38 |
+22:20:40.6 |
HIP 19672 |
10.31 |
| 2026-10-01 12:00 |
04:12:05.46 |
+22:20:31.6 |
HIP 19672 |
11.42 |
| 2026-10-02 00:00 |
04:12:00.43 |
+22:20:22.2 |
HIP 19672 |
12.56 |
| 2026-10-02 12:00 |
04:11:55.28 |
+22:20:12.5 |
HIP 19672 |
13.73 |
| 2026-10-03 00:00 |
04:11:50.01 |
+22:20:02.4 |
HIP 19672 |
14.94 |
| 2026-10-03 12:00 |
04:11:44.62 |
+22:19:52.1 |
HIP 19672 |
16.18 |
| 2026-10-04 00:00 |
04:11:39.11 |
+22:19:41.4 |
HIP 19558 |
16.51 |
| 2026-10-04 12:00 |
04:11:33.48 |
+22:19:30.3 |
HIP 19558 |
16.07 |
| 2026-10-05 00:00 |
04:11:27.74 |
+22:19:19.0 |
HIP 19558 |
15.71 |
| 2026-10-05 12:00 |
04:11:21.88 |
+22:19:07.3 |
HIP 19558 |
15.45 |
| 2026-10-06 00:00 |
04:11:15.90 |
+22:18:55.2 |
HIP 19558 |
15.31 |
| 2026-10-06 12:00 |
04:11:09.80 |
+22:18:42.9 |
HIP 19558 |
15.30 |
| 2026-10-07 00:00 |
04:11:03.59 |
+22:18:30.2 |
HIP 19558 |
15.42 |
| 2026-10-07 12:00 |
04:10:57.26 |
+22:18:17.1 |
HIP 19558 |
15.68 |
| 2026-10-08 00:00 |
04:10:50.82 |
+22:18:03.8 |
HIP 19558 |
16.08 |
| 2026-10-08 12:00 |
04:10:44.27 |
+22:17:50.1 |
HIP 19558 |
16.62 |
| 2026-10-09 00:00 |
04:10:37.60 |
+22:17:36.0 |
HIP 19558 |
17.29 |
| 2026-10-09 12:00 |
04:10:30.82 |
+22:17:21.7 |
HIP 19558 |
18.08 |
| 2026-10-10 00:00 |
04:10:23.92 |
+22:17:07.0 |
HIP 19558 |
18.99 |
| 2026-10-10 12:00 |
04:10:16.91 |
+22:16:52.0 |
HIP 19558 |
20.00 |
| 2026-10-11 00:00 |
04:10:09.80 |
+22:16:36.6 |
HIP 19558 |
21.11 |