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) |
| 2026-03-26 00:00 |
03:08:41.07 |
+18:44:20.5 |
HIP 14586 |
5.80 |
| 2026-03-26 12:00 |
03:08:53.15 |
+18:45:06.0 |
HIP 14586 |
8.02 |
| 2026-03-27 00:00 |
03:09:05.30 |
+18:45:51.7 |
HIP 14586 |
10.63 |
| 2026-03-27 12:00 |
03:09:17.51 |
+18:46:37.6 |
HIP 14586 |
13.40 |
| 2026-03-28 00:00 |
03:09:29.78 |
+18:47:23.7 |
HIP 14675 |
14.58 |
| 2026-03-28 12:00 |
03:09:42.11 |
+18:48:10.0 |
HIP 14675 |
13.82 |
| 2026-03-29 00:00 |
03:09:54.50 |
+18:48:56.5 |
HIP 14675 |
13.69 |
| 2026-03-29 12:00 |
03:10:06.95 |
+18:49:43.3 |
HIP 14675 |
14.23 |
| 2026-03-30 00:00 |
03:10:19.46 |
+18:50:30.2 |
HIP 14675 |
15.37 |
| 2026-03-30 12:00 |
03:10:32.03 |
+18:51:17.3 |
HIP 14675 |
17.00 |
| 2026-03-31 00:00 |
03:10:44.66 |
+18:52:04.6 |
HIP 14675 |
19.00 |
| 2026-03-31 12:00 |
03:10:57.34 |
+18:52:52.1 |
HIP 14675 |
21.27 |
| 2026-04-01 00:00 |
03:11:10.08 |
+18:53:39.8 |
HIP 14929 |
19.81 |
| 2026-04-01 12:00 |
03:11:22.88 |
+18:54:27.7 |
HIP 14929 |
16.70 |
| 2026-04-02 00:00 |
03:11:35.73 |
+18:55:15.8 |
HIP 14929 |
13.59 |
| 2026-04-02 12:00 |
03:11:48.64 |
+18:56:04.0 |
HIP 14929 |
10.48 |
| 2026-04-03 00:00 |
03:12:01.60 |
+18:56:52.4 |
HIP 14929 |
7.41 |
| 2026-04-03 12:00 |
03:12:14.61 |
+18:57:41.0 |
HIP 14929 |
4.45 |
| 2026-04-04 00:00 |
03:12:27.68 |
+18:58:29.8 |
HIP 14929 |
2.25 |
| 2026-04-04 12:00 |
03:12:40.80 |
+18:59:18.7 |
HIP 14929 |
3.28 |
| 2026-04-05 00:00 |
03:12:53.98 |
+19:00:07.8 |
HIP 14929 |
6.10 |
| 2026-04-05 12:00 |
03:13:07.20 |
+19:00:57.1 |
HIP 14929 |
9.19 |
| 2026-04-06 00:00 |
03:13:20.48 |
+19:01:46.5 |
HIP 15048 |
8.80 |
| 2026-04-06 12:00 |
03:13:33.80 |
+19:02:36.1 |
HIP 15048 |
6.52 |
| 2026-04-07 00:00 |
03:13:47.18 |
+19:03:25.8 |
HIP 15048 |
5.35 |
| 2026-04-07 12:00 |
03:14:00.60 |
+19:04:15.7 |
HIP 15048 |
6.02 |
| 2026-04-08 00:00 |
03:14:14.08 |
+19:05:05.7 |
HIP 15048 |
8.09 |
| 2026-04-08 12:00 |
03:14:27.60 |
+19:05:55.9 |
HIP 15048 |
10.80 |
| 2026-04-09 00:00 |
03:14:41.17 |
+19:06:46.2 |
HIP 15048 |
13.78 |
| 2026-04-09 12:00 |
03:14:54.79 |
+19:07:36.6 |
HIP 15048 |
16.89 |
| 2026-04-10 00:00 |
03:15:08.45 |
+19:08:27.2 |
HIP 15048 |
20.09 |
| 2026-04-10 12:00 |
03:15:22.16 |
+19:09:17.9 |
HIP 15227 |
17.40 |
| 2026-04-11 00:00 |
03:15:35.92 |
+19:10:08.8 |
HIP 15227 |
14.41 |
| 2026-04-11 12:00 |
03:15:49.72 |
+19:10:59.7 |
HIP 15227 |
11.62 |
| 2026-04-12 00:00 |
03:16:03.57 |
+19:11:50.8 |
HIP 15227 |
9.21 |
| 2026-04-12 12:00 |
03:16:17.45 |
+19:12:42.1 |
HIP 15227 |
7.58 |
| 2026-04-13 00:00 |
03:16:31.39 |
+19:13:33.4 |
HIP 15227 |
7.28 |
| 2026-04-13 12:00 |
03:16:45.36 |
+19:14:24.9 |
HIP 15227 |
8.47 |
| 2026-04-14 00:00 |
03:16:59.38 |
+19:15:16.4 |
HIP 15227 |
10.67 |
| 2026-04-14 12:00 |
03:17:13.44 |
+19:16:08.1 |
HIP 15227 |
13.40 |
| 2026-04-15 00:00 |
03:17:27.53 |
+19:16:59.9 |
HIP 15227 |
16.41 |
| 2026-04-15 12:00 |
03:17:41.67 |
+19:17:51.8 |
HIP 15227 |
19.56 |
| 2026-04-16 00:00 |
03:17:55.85 |
+19:18:43.7 |
HIP 15227 |
22.81 |