メタデータ
| 項目 |
値 |
| Designation |
315P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-12-07T07:13:42.444480Z |
| Orbit solution date (soln_date, UTC) |
2025-11-25T15:42:35Z |
| Obs used |
2369 |
| NEO |
- |
| M1 |
10.700 |
| K1 |
10.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-10-14.0000000 |
| e |
0.51637548 |
| q (au) |
2.429183 |
| a (au) |
5.022870 |
| i (deg) |
17.906607 |
| Ω (om, deg) |
69.600919 |
| ω (w, deg) |
66.946020 |
| M (ma, deg) |
227.329282 |
等級
散乱 + 全体線形
$$
M_a = (8.160 + 5.209\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.160 |
| n |
5.209 |
| gf |
0.964 |
| gb |
-0.977 |
| k |
1.000 |
| δ90 |
8.536 |
| 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) |
| 2026-03-26 00:00 |
01:20:48.74 |
-03:33:07.3 |
HIP 6360 |
14.94 |
| 2026-03-26 12:00 |
01:21:14.38 |
-03:29:44.1 |
HIP 6360 |
7.70 |
| 2026-03-27 00:00 |
01:21:40.06 |
-03:26:21.2 |
HIP 6360 |
0.46 |
| 2026-03-27 12:00 |
01:22:05.80 |
-03:22:58.4 |
HIP 6360 |
6.80 |
| 2026-03-28 00:00 |
01:22:31.57 |
-03:19:35.8 |
HIP 6360 |
14.07 |
| 2026-03-28 12:00 |
01:22:57.40 |
-03:16:13.4 |
HIP 6360 |
21.34 |
| 2026-03-29 00:00 |
01:23:23.27 |
-03:12:51.3 |
HIP 6360 |
28.63 |
| 2026-03-29 12:00 |
01:23:49.18 |
-03:09:29.4 |
HIP 6605 |
23.79 |
| 2026-03-30 00:00 |
01:24:15.14 |
-03:06:07.6 |
HIP 6605 |
17.37 |
| 2026-03-30 12:00 |
01:24:41.14 |
-03:02:46.1 |
HIP 6605 |
12.01 |
| 2026-03-31 00:00 |
01:25:07.18 |
-02:59:24.9 |
HIP 6605 |
9.68 |
| 2026-03-31 12:00 |
01:25:33.27 |
-02:56:03.8 |
HIP 6605 |
12.27 |
| 2026-04-01 00:00 |
01:25:59.40 |
-02:52:43.0 |
HIP 6605 |
17.75 |
| 2026-04-01 12:00 |
01:26:25.57 |
-02:49:22.4 |
HIP 6605 |
24.24 |
| 2026-04-02 00:00 |
01:26:51.78 |
-02:46:02.0 |
HIP 6605 |
31.12 |
| 2026-04-02 12:00 |
01:27:18.03 |
-02:42:41.9 |
HIP 6700 |
35.50 |
| 2026-04-03 00:00 |
01:27:44.32 |
-02:39:22.0 |
HIP 6700 |
36.69 |
| 2026-04-03 12:00 |
01:28:10.65 |
-02:36:02.4 |
HIP 6840 |
34.01 |
| 2026-04-04 00:00 |
01:28:37.02 |
-02:32:43.0 |
HIP 6840 |
31.89 |
| 2026-04-04 12:00 |
01:29:03.43 |
-02:29:23.9 |
HIP 6840 |
31.41 |
| 2026-04-05 00:00 |
01:29:29.87 |
-02:26:05.0 |
HIP 7085 |
27.20 |
| 2026-04-05 12:00 |
01:29:56.36 |
-02:22:46.4 |
HIP 7085 |
20.09 |
| 2026-04-06 00:00 |
01:30:22.88 |
-02:19:28.0 |
HIP 7085 |
13.28 |
| 2026-04-06 12:00 |
01:30:49.44 |
-02:16:09.9 |
HIP 7085 |
7.66 |
| 2026-04-07 00:00 |
01:31:16.03 |
-02:12:52.1 |
HIP 7085 |
7.12 |
| 2026-04-07 12:00 |
01:31:42.66 |
-02:09:34.5 |
HIP 7085 |
12.36 |
| 2026-04-08 00:00 |
01:32:09.33 |
-02:06:17.2 |
HIP 7085 |
19.11 |
| 2026-04-08 12:00 |
01:32:36.03 |
-02:03:00.2 |
HIP 7267 |
18.72 |
| 2026-04-09 00:00 |
01:33:02.76 |
-01:59:43.4 |
HIP 7267 |
11.47 |
| 2026-04-09 12:00 |
01:33:29.53 |
-01:56:27.0 |
HIP 7267 |
4.84 |
| 2026-04-10 00:00 |
01:33:56.34 |
-01:53:10.8 |
HIP 7267 |
5.12 |
| 2026-04-10 12:00 |
01:34:23.17 |
-01:49:55.0 |
HIP 7303 |
10.24 |
| 2026-04-11 00:00 |
01:34:50.04 |
-01:46:39.4 |
HIP 7303 |
13.20 |
| 2026-04-11 12:00 |
01:35:16.94 |
-01:43:24.1 |
HIP 7303 |
18.86 |
| 2026-04-12 00:00 |
01:35:43.87 |
-01:40:09.1 |
HIP 7303 |
25.47 |
| 2026-04-12 12:00 |
01:36:10.83 |
-01:36:54.5 |
HIP 7596 |
31.25 |
| 2026-04-13 00:00 |
01:36:37.82 |
-01:33:40.1 |
HIP 7596 |
23.95 |
| 2026-04-13 12:00 |
01:37:04.85 |
-01:30:26.1 |
HIP 7596 |
16.80 |
| 2026-04-14 00:00 |
01:37:31.90 |
-01:27:12.3 |
HIP 7596 |
10.16 |
| 2026-04-14 12:00 |
01:37:58.98 |
-01:23:58.9 |
HIP 7596 |
6.05 |
| 2026-04-15 00:00 |
01:38:26.08 |
-01:20:45.9 |
HIP 7596 |
9.08 |
| 2026-04-15 12:00 |
01:38:53.22 |
-01:17:33.1 |
HIP 7596 |
15.52 |
| 2026-04-16 00:00 |
01:39:20.38 |
-01:14:20.7 |
HIP 7596 |
22.64 |