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 |
0.999 |
| 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) |
| 2026-09-20 00:00 |
14:42:25.35 |
-19:00:32.1 |
HIP 71934 |
18.76 |
| 2026-09-20 12:00 |
14:42:27.11 |
-19:00:39.3 |
HIP 71934 |
18.54 |
| 2026-09-21 00:00 |
14:42:28.90 |
-19:00:46.5 |
HIP 71934 |
18.33 |
| 2026-09-21 12:00 |
14:42:30.69 |
-19:00:53.9 |
HIP 71934 |
18.13 |
| 2026-09-22 00:00 |
14:42:32.51 |
-19:01:01.3 |
HIP 71934 |
17.93 |
| 2026-09-22 12:00 |
14:42:34.34 |
-19:01:08.8 |
HIP 71934 |
17.74 |
| 2026-09-23 00:00 |
14:42:36.18 |
-19:01:16.4 |
HIP 71934 |
17.56 |
| 2026-09-23 12:00 |
14:42:38.04 |
-19:01:24.1 |
HIP 71934 |
17.38 |
| 2026-09-24 00:00 |
14:42:39.92 |
-19:01:31.9 |
HIP 71934 |
17.22 |
| 2026-09-24 12:00 |
14:42:41.81 |
-19:01:39.7 |
HIP 71934 |
17.06 |
| 2026-09-25 00:00 |
14:42:43.71 |
-19:01:47.6 |
HIP 71934 |
16.91 |
| 2026-09-25 12:00 |
14:42:45.63 |
-19:01:55.6 |
HIP 71934 |
16.78 |
| 2026-09-26 00:00 |
14:42:47.57 |
-19:02:03.7 |
HIP 71934 |
16.65 |
| 2026-09-26 12:00 |
14:42:49.52 |
-19:02:11.9 |
HIP 71934 |
16.54 |
| 2026-09-27 00:00 |
14:42:51.49 |
-19:02:20.1 |
HIP 71934 |
16.44 |
| 2026-09-27 12:00 |
14:42:53.47 |
-19:02:28.4 |
HIP 71934 |
16.35 |
| 2026-09-28 00:00 |
14:42:55.46 |
-19:02:36.8 |
HIP 71934 |
16.28 |
| 2026-09-28 12:00 |
14:42:57.47 |
-19:02:45.3 |
HIP 71934 |
16.21 |
| 2026-09-29 00:00 |
14:42:59.49 |
-19:02:53.9 |
HIP 71934 |
16.17 |
| 2026-09-29 12:00 |
14:43:01.53 |
-19:03:02.5 |
HIP 71934 |
16.14 |
| 2026-09-30 00:00 |
14:43:03.57 |
-19:03:11.2 |
HIP 71934 |
16.12 |
| 2026-09-30 12:00 |
14:43:05.64 |
-19:03:20.0 |
HIP 71934 |
16.12 |
| 2026-10-01 00:00 |
14:43:07.71 |
-19:03:28.8 |
HIP 71934 |
16.13 |
| 2026-10-01 12:00 |
14:43:09.80 |
-19:03:37.8 |
HIP 71934 |
16.16 |
| 2026-10-02 00:00 |
14:43:11.91 |
-19:03:46.8 |
HIP 71934 |
16.21 |
| 2026-10-02 12:00 |
14:43:14.02 |
-19:03:55.8 |
HIP 71934 |
16.28 |
| 2026-10-03 00:00 |
14:43:16.15 |
-19:04:05.0 |
HIP 71934 |
16.36 |
| 2026-10-03 12:00 |
14:43:18.29 |
-19:04:14.2 |
HIP 71934 |
16.45 |
| 2026-10-04 00:00 |
14:43:20.45 |
-19:04:23.5 |
HIP 71934 |
16.57 |
| 2026-10-04 12:00 |
14:43:22.62 |
-19:04:32.9 |
HIP 71934 |
16.70 |
| 2026-10-05 00:00 |
14:43:24.80 |
-19:04:42.3 |
HIP 71934 |
16.85 |
| 2026-10-05 12:00 |
14:43:26.99 |
-19:04:51.8 |
HIP 71934 |
17.01 |
| 2026-10-06 00:00 |
14:43:29.19 |
-19:05:01.4 |
HIP 71934 |
17.19 |
| 2026-10-06 12:00 |
14:43:31.40 |
-19:05:11.0 |
HIP 71934 |
17.39 |
| 2026-10-07 00:00 |
14:43:33.63 |
-19:05:20.7 |
HIP 71934 |
17.60 |
| 2026-10-07 12:00 |
14:43:35.87 |
-19:05:30.5 |
HIP 71934 |
17.83 |
| 2026-10-08 00:00 |
14:43:38.12 |
-19:05:40.3 |
HIP 71934 |
18.07 |
| 2026-10-08 12:00 |
14:43:40.38 |
-19:05:50.2 |
HIP 71934 |
18.33 |
| 2026-10-09 00:00 |
14:43:42.65 |
-19:06:00.2 |
HIP 71934 |
18.60 |
| 2026-10-09 12:00 |
14:43:44.93 |
-19:06:10.2 |
HIP 71934 |
18.88 |
| 2026-10-10 00:00 |
14:43:47.22 |
-19:06:20.3 |
HIP 71934 |
19.18 |
| 2026-10-10 12:00 |
14:43:49.53 |
-19:06:30.5 |
HIP 71934 |
19.50 |
| 2026-10-11 00:00 |
14:43:51.84 |
-19:06:40.7 |
HIP 71934 |
19.82 |