メタデータ
| 項目 |
値 |
| Designation |
C/2002 R3 (LONEOS) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-06-13T11:35:43.209600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:20Z |
| Obs used |
1261 |
| NEO |
- |
| M1 |
9.300 |
| K1 |
8.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-04-08.0000000 |
| e |
1.00261095 |
| q (au) |
3.869488 |
| a (au) |
-1482.020620 |
| i (deg) |
161.095162 |
| Ω (om, deg) |
54.295118 |
| ω (w, deg) |
45.068070 |
| M (ma, deg) |
-0.001149 |
等級
散乱 + 全体線形
$$
M_a = (7.252 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.252 |
| n |
6.000 |
| gf |
0.964 |
| gb |
-0.696 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
14:46:35.94 |
-19:22:57.0 |
HIP 72202 |
25.40 |
| 2026-05-12 12:00 |
14:46:32.85 |
-19:22:44.1 |
HIP 72202 |
24.98 |
| 2026-05-13 00:00 |
14:46:29.77 |
-19:22:31.1 |
HIP 72202 |
24.58 |
| 2026-05-13 12:00 |
14:46:26.69 |
-19:22:18.2 |
HIP 72202 |
24.19 |
| 2026-05-14 00:00 |
14:46:23.61 |
-19:22:05.3 |
HIP 72202 |
23.83 |
| 2026-05-14 12:00 |
14:46:20.54 |
-19:21:52.4 |
HIP 72202 |
23.48 |
| 2026-05-15 00:00 |
14:46:17.47 |
-19:21:39.4 |
HIP 72202 |
23.15 |
| 2026-05-15 12:00 |
14:46:14.41 |
-19:21:26.5 |
HIP 72202 |
22.84 |
| 2026-05-16 00:00 |
14:46:11.35 |
-19:21:13.5 |
HIP 72202 |
22.55 |
| 2026-05-16 12:00 |
14:46:08.30 |
-19:21:00.6 |
HIP 72202 |
22.29 |
| 2026-05-17 00:00 |
14:46:05.25 |
-19:20:47.6 |
HIP 72202 |
22.04 |
| 2026-05-17 12:00 |
14:46:02.21 |
-19:20:34.7 |
HIP 72202 |
21.82 |
| 2026-05-18 00:00 |
14:45:59.17 |
-19:20:21.8 |
HIP 72202 |
21.63 |
| 2026-05-18 12:00 |
14:45:56.14 |
-19:20:08.8 |
HIP 72202 |
21.46 |
| 2026-05-19 00:00 |
14:45:53.12 |
-19:19:55.9 |
HIP 72202 |
21.31 |
| 2026-05-19 12:00 |
14:45:50.10 |
-19:19:42.9 |
HIP 72202 |
21.19 |
| 2026-05-20 00:00 |
14:45:47.09 |
-19:19:30.0 |
HIP 72202 |
21.09 |
| 2026-05-20 12:00 |
14:45:44.09 |
-19:19:17.1 |
HIP 72202 |
21.02 |
| 2026-05-21 00:00 |
14:45:41.09 |
-19:19:04.2 |
HIP 72202 |
20.98 |
| 2026-05-21 12:00 |
14:45:38.10 |
-19:18:51.3 |
HIP 72202 |
20.96 |
| 2026-05-22 00:00 |
14:45:35.12 |
-19:18:38.4 |
HIP 72202 |
20.96 |
| 2026-05-22 12:00 |
14:45:32.15 |
-19:18:25.5 |
HIP 72202 |
20.99 |
| 2026-05-23 00:00 |
14:45:29.19 |
-19:18:12.6 |
HIP 72202 |
21.05 |
| 2026-05-23 12:00 |
14:45:26.23 |
-19:17:59.8 |
HIP 72202 |
21.13 |
| 2026-05-24 00:00 |
14:45:23.28 |
-19:17:47.0 |
HIP 72202 |
21.24 |
| 2026-05-24 12:00 |
14:45:20.35 |
-19:17:34.1 |
HIP 72202 |
21.36 |
| 2026-05-25 00:00 |
14:45:17.42 |
-19:17:21.3 |
HIP 72202 |
21.52 |
| 2026-05-25 12:00 |
14:45:14.50 |
-19:17:08.5 |
HIP 72202 |
21.69 |
| 2026-05-26 00:00 |
14:45:11.58 |
-19:16:55.8 |
HIP 72202 |
21.89 |
| 2026-05-26 12:00 |
14:45:08.68 |
-19:16:43.0 |
HIP 72202 |
22.10 |
| 2026-05-27 00:00 |
14:45:05.79 |
-19:16:30.3 |
HIP 72202 |
22.34 |
| 2026-05-27 12:00 |
14:45:02.91 |
-19:16:17.6 |
HIP 72202 |
22.59 |
| 2026-05-28 00:00 |
14:45:00.04 |
-19:16:04.9 |
HIP 72202 |
22.87 |
| 2026-05-28 12:00 |
14:44:57.17 |
-19:15:52.2 |
HIP 72202 |
23.16 |
| 2026-05-29 00:00 |
14:44:54.32 |
-19:15:39.5 |
HIP 72202 |
23.46 |
| 2026-05-29 12:00 |
14:44:51.48 |
-19:15:26.9 |
HIP 72202 |
23.78 |
| 2026-05-30 00:00 |
14:44:48.65 |
-19:15:14.3 |
HIP 72202 |
24.12 |
| 2026-05-30 12:00 |
14:44:45.83 |
-19:15:01.8 |
HIP 72202 |
24.47 |
| 2026-05-31 00:00 |
14:44:43.02 |
-19:14:49.2 |
HIP 72202 |
24.84 |
| 2026-05-31 12:00 |
14:44:40.23 |
-19:14:36.7 |
HIP 72202 |
25.21 |
| 2026-06-01 00:00 |
14:44:37.44 |
-19:14:24.2 |
HIP 72202 |
25.60 |
| 2026-06-01 12:00 |
14:44:34.67 |
-19:14:11.8 |
HIP 72202 |
26.00 |
| 2026-06-02 00:00 |
14:44:31.91 |
-19:13:59.3 |
HIP 71934 |
25.64 |