メタデータ
| 項目 |
値 |
| Designation |
267P/LONEOS |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-09-02T22:24:46.506240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:28:10Z |
| Obs used |
197 |
| NEO |
- |
| M1 |
20.500 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-09-25.0000000 |
| e |
0.59338984 |
| q (au) |
1.337651 |
| a (au) |
3.289763 |
| i (deg) |
5.368342 |
| Ω (om, deg) |
245.248897 |
| ω (w, deg) |
96.855091 |
| M (ma, deg) |
63.935532 |
等級
散乱 + 全体線形
$$
M_a = (19.505 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.505 |
| n |
6.000 |
| gf |
0.992 |
| gb |
-0.846 |
| k |
0.977 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
10:29:26.22 |
+04:06:08.4 |
HIP 51370 |
12.48 |
| 2026-09-20 12:00 |
10:29:48.18 |
+04:03:51.4 |
HIP 51370 |
10.94 |
| 2026-09-21 00:00 |
10:30:10.08 |
+04:01:34.3 |
HIP 51370 |
12.41 |
| 2026-09-21 12:00 |
10:30:31.95 |
+03:59:17.2 |
HIP 51370 |
16.06 |
| 2026-09-22 00:00 |
10:30:53.76 |
+03:57:00.1 |
HIP 51370 |
20.77 |
| 2026-09-22 12:00 |
10:31:15.54 |
+03:54:43.0 |
HIP 51370 |
25.96 |
| 2026-09-23 00:00 |
10:31:37.27 |
+03:52:25.9 |
HIP 51436 |
27.84 |
| 2026-09-23 12:00 |
10:31:58.95 |
+03:50:08.8 |
HIP 51436 |
30.64 |
| 2026-09-24 00:00 |
10:32:20.58 |
+03:47:51.7 |
HIP 51753 |
33.10 |
| 2026-09-24 12:00 |
10:32:42.17 |
+03:45:34.6 |
HIP 51753 |
27.27 |
| 2026-09-25 00:00 |
10:33:03.71 |
+03:43:17.6 |
HIP 51753 |
21.45 |
| 2026-09-25 12:00 |
10:33:25.20 |
+03:41:00.5 |
HIP 51753 |
15.67 |
| 2026-09-26 00:00 |
10:33:46.65 |
+03:38:43.5 |
HIP 51753 |
9.96 |
| 2026-09-26 12:00 |
10:34:08.04 |
+03:36:26.5 |
HIP 51753 |
4.53 |
| 2026-09-27 00:00 |
10:34:29.38 |
+03:34:09.6 |
HIP 51753 |
3.04 |
| 2026-09-27 12:00 |
10:34:50.68 |
+03:31:52.7 |
HIP 51753 |
8.06 |
| 2026-09-28 00:00 |
10:35:11.92 |
+03:29:35.8 |
HIP 51753 |
13.68 |
| 2026-09-28 12:00 |
10:35:33.11 |
+03:27:19.0 |
HIP 51753 |
19.38 |
| 2026-09-29 00:00 |
10:35:54.25 |
+03:25:02.2 |
HIP 51753 |
25.09 |
| 2026-09-29 12:00 |
10:36:15.33 |
+03:22:45.5 |
HIP 52055 |
29.73 |
| 2026-09-30 00:00 |
10:36:36.37 |
+03:20:28.8 |
HIP 52055 |
24.79 |
| 2026-09-30 12:00 |
10:36:57.34 |
+03:18:12.2 |
HIP 52055 |
20.29 |
| 2026-10-01 00:00 |
10:37:18.27 |
+03:15:55.6 |
HIP 52055 |
16.55 |
| 2026-10-01 12:00 |
10:37:39.13 |
+03:13:39.2 |
HIP 52055 |
14.18 |
| 2026-10-02 00:00 |
10:37:59.95 |
+03:11:22.8 |
HIP 52055 |
13.90 |
| 2026-10-02 12:00 |
10:38:20.70 |
+03:09:06.5 |
HIP 52055 |
15.79 |
| 2026-10-03 00:00 |
10:38:41.40 |
+03:06:50.2 |
HIP 52055 |
19.22 |
| 2026-10-03 12:00 |
10:39:02.04 |
+03:04:34.1 |
HIP 52055 |
23.51 |
| 2026-10-04 00:00 |
10:39:22.62 |
+03:02:18.1 |
HIP 52055 |
28.26 |
| 2026-10-04 12:00 |
10:39:43.14 |
+03:00:02.1 |
HIP 52086 |
29.73 |
| 2026-10-05 00:00 |
10:40:03.60 |
+02:57:46.3 |
HIP 52201 |
27.55 |
| 2026-10-05 12:00 |
10:40:24.00 |
+02:55:30.6 |
HIP 52201 |
26.18 |
| 2026-10-06 00:00 |
10:40:44.34 |
+02:53:15.0 |
HIP 52368 |
22.67 |
| 2026-10-06 12:00 |
10:41:04.61 |
+02:50:59.5 |
HIP 52368 |
17.24 |
| 2026-10-07 00:00 |
10:41:24.82 |
+02:48:44.2 |
HIP 52368 |
11.94 |
| 2026-10-07 12:00 |
10:41:44.97 |
+02:46:29.0 |
HIP 52368 |
6.99 |
| 2026-10-08 00:00 |
10:42:05.05 |
+02:44:13.9 |
HIP 52368 |
4.03 |
| 2026-10-08 12:00 |
10:42:25.07 |
+02:41:59.0 |
HIP 52368 |
6.62 |
| 2026-10-09 00:00 |
10:42:45.02 |
+02:39:44.3 |
HIP 52368 |
11.45 |
| 2026-10-09 12:00 |
10:43:04.90 |
+02:37:29.7 |
HIP 52368 |
16.67 |
| 2026-10-10 00:00 |
10:43:24.71 |
+02:35:15.2 |
HIP 52368 |
21.98 |
| 2026-10-10 12:00 |
10:43:44.46 |
+02:33:01.0 |
HIP 52584 |
21.56 |
| 2026-10-11 00:00 |
10:44:04.13 |
+02:30:46.9 |
HIP 52584 |
16.39 |