メタデータ
| 項目 |
値 |
| Designation |
C/2001 OG108 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-03-15T04:56:44.543040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:10Z |
| Obs used |
882 |
| NEO |
Yes |
| M1 |
13.300 |
| K1 |
11.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2001-12-05.0000000 |
| e |
0.92526008 |
| q (au) |
0.994048 |
| a (au) |
13.300093 |
| i (deg) |
80.245059 |
| Ω (om, deg) |
10.555290 |
| ω (w, deg) |
116.419511 |
| M (ma, deg) |
357.963820 |
等級
散乱 + 全体線形
$$
M_a = (10.668 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.668 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.831 |
| k |
0.800 |
| 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 |
| 2001-08-27 |
2002-03-15 |
+6.7648 |
-0.411 |
| 2002-03-15 |
2002-04-29 |
+26.2855 |
-0.105 |
| 2002-04-29 |
2002-06-05 |
-11.8897 |
+2.380 |
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) |
| 2026-05-12 00:00 |
02:11:49.01 |
-54:36:12.3 |
HIP 10134 |
13.40 |
| 2026-05-12 12:00 |
02:11:55.96 |
-54:36:17.1 |
HIP 10134 |
14.35 |
| 2026-05-13 00:00 |
02:12:02.90 |
-54:36:22.5 |
HIP 10134 |
15.30 |
| 2026-05-13 12:00 |
02:12:09.82 |
-54:36:28.4 |
HIP 10134 |
16.26 |
| 2026-05-14 00:00 |
02:12:16.73 |
-54:36:34.8 |
HIP 10134 |
17.21 |
| 2026-05-14 12:00 |
02:12:23.62 |
-54:36:41.8 |
HIP 10134 |
18.17 |
| 2026-05-15 00:00 |
02:12:30.49 |
-54:36:49.2 |
HIP 10134 |
19.13 |
| 2026-05-15 12:00 |
02:12:37.35 |
-54:36:57.2 |
HIP 10134 |
20.09 |
| 2026-05-16 00:00 |
02:12:44.19 |
-54:37:05.7 |
HIP 10461 |
21.04 |
| 2026-05-16 12:00 |
02:12:51.01 |
-54:37:14.7 |
HIP 10461 |
20.24 |
| 2026-05-17 00:00 |
02:12:57.81 |
-54:37:24.2 |
HIP 10461 |
19.48 |
| 2026-05-17 12:00 |
02:13:04.59 |
-54:37:34.2 |
HIP 10461 |
18.74 |
| 2026-05-18 00:00 |
02:13:11.35 |
-54:37:44.7 |
HIP 10461 |
18.03 |
| 2026-05-18 12:00 |
02:13:18.10 |
-54:37:55.7 |
HIP 10461 |
17.36 |
| 2026-05-19 00:00 |
02:13:24.82 |
-54:38:07.3 |
HIP 10461 |
16.73 |
| 2026-05-19 12:00 |
02:13:31.52 |
-54:38:19.3 |
HIP 10461 |
16.15 |
| 2026-05-20 00:00 |
02:13:38.20 |
-54:38:31.9 |
HIP 10461 |
15.61 |
| 2026-05-20 12:00 |
02:13:44.86 |
-54:38:44.9 |
HIP 10461 |
15.13 |
| 2026-05-21 00:00 |
02:13:51.49 |
-54:38:58.5 |
HIP 10461 |
14.71 |
| 2026-05-21 12:00 |
02:13:58.11 |
-54:39:12.6 |
HIP 10461 |
14.36 |
| 2026-05-22 00:00 |
02:14:04.70 |
-54:39:27.1 |
HIP 10461 |
14.07 |
| 2026-05-22 12:00 |
02:14:11.26 |
-54:39:42.2 |
HIP 10461 |
13.86 |
| 2026-05-23 00:00 |
02:14:17.81 |
-54:39:57.8 |
HIP 10461 |
13.72 |
| 2026-05-23 12:00 |
02:14:24.32 |
-54:40:13.9 |
HIP 10461 |
13.66 |
| 2026-05-24 00:00 |
02:14:30.82 |
-54:40:30.4 |
HIP 10461 |
13.69 |
| 2026-05-24 12:00 |
02:14:37.29 |
-54:40:47.5 |
HIP 10461 |
13.79 |
| 2026-05-25 00:00 |
02:14:43.73 |
-54:41:05.0 |
HIP 10461 |
13.96 |
| 2026-05-25 12:00 |
02:14:50.14 |
-54:41:23.1 |
HIP 10461 |
14.22 |
| 2026-05-26 00:00 |
02:14:56.54 |
-54:41:41.6 |
HIP 10461 |
14.54 |
| 2026-05-26 12:00 |
02:15:02.90 |
-54:42:00.6 |
HIP 10461 |
14.92 |
| 2026-05-27 00:00 |
02:15:09.24 |
-54:42:20.1 |
HIP 10461 |
15.37 |
| 2026-05-27 12:00 |
02:15:15.55 |
-54:42:40.1 |
HIP 10461 |
15.87 |
| 2026-05-28 00:00 |
02:15:21.83 |
-54:43:00.6 |
HIP 10461 |
16.41 |
| 2026-05-28 12:00 |
02:15:28.08 |
-54:43:21.6 |
HIP 10461 |
17.01 |
| 2026-05-29 00:00 |
02:15:34.31 |
-54:43:43.0 |
HIP 10461 |
17.64 |
| 2026-05-29 12:00 |
02:15:40.50 |
-54:44:05.0 |
HIP 10461 |
18.31 |
| 2026-05-30 00:00 |
02:15:46.67 |
-54:44:27.4 |
HIP 10461 |
19.01 |
| 2026-05-30 12:00 |
02:15:52.81 |
-54:44:50.3 |
HIP 10461 |
19.73 |
| 2026-05-31 00:00 |
02:15:58.92 |
-54:45:13.6 |
HIP 10461 |
20.49 |
| 2026-05-31 12:00 |
02:16:04.99 |
-54:45:37.5 |
HIP 10461 |
21.26 |
| 2026-06-01 00:00 |
02:16:11.04 |
-54:46:01.8 |
HIP 10461 |
22.05 |
| 2026-06-01 12:00 |
02:16:17.06 |
-54:46:26.6 |
HIP 10779 |
21.78 |
| 2026-06-02 00:00 |
02:16:23.04 |
-54:46:51.9 |
HIP 10779 |
20.84 |