メタデータ
| 項目 |
値 |
| Designation |
C/2002 Q2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-08-17T18:46:31.782720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:19Z |
| Obs used |
166 |
| NEO |
- |
| M1 |
16.400 |
| K1 |
10.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-09-04.0000000 |
| e |
0.97789208 |
| q (au) |
1.303022 |
| a (au) |
58.939134 |
| i (deg) |
96.765213 |
| Ω (om, deg) |
154.285005 |
| ω (w, deg) |
125.472100 |
| M (ma, deg) |
0.037504 |
等級
散乱 + 全体線形
$$
M_a = (16.983 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.983 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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 |
08:28:42.54 |
-57:14:10.9 |
HIP 41680 |
9.51 |
| 2026-05-12 12:00 |
08:28:44.04 |
-57:13:30.2 |
HIP 41680 |
9.55 |
| 2026-05-13 00:00 |
08:28:45.57 |
-57:12:49.6 |
HIP 41680 |
9.63 |
| 2026-05-13 12:00 |
08:28:47.15 |
-57:12:09.2 |
HIP 41680 |
9.76 |
| 2026-05-14 00:00 |
08:28:48.76 |
-57:11:28.8 |
HIP 41680 |
9.93 |
| 2026-05-14 12:00 |
08:28:50.42 |
-57:10:48.6 |
HIP 41680 |
10.14 |
| 2026-05-15 00:00 |
08:28:52.12 |
-57:10:08.6 |
HIP 41680 |
10.39 |
| 2026-05-15 12:00 |
08:28:53.85 |
-57:09:28.6 |
HIP 41680 |
10.67 |
| 2026-05-16 00:00 |
08:28:55.63 |
-57:08:48.8 |
HIP 41680 |
10.99 |
| 2026-05-16 12:00 |
08:28:57.45 |
-57:08:09.2 |
HIP 41680 |
11.33 |
| 2026-05-17 00:00 |
08:28:59.30 |
-57:07:29.7 |
HIP 41680 |
11.71 |
| 2026-05-17 12:00 |
08:29:01.20 |
-57:06:50.4 |
HIP 41680 |
12.10 |
| 2026-05-18 00:00 |
08:29:03.13 |
-57:06:11.2 |
HIP 41680 |
12.52 |
| 2026-05-18 12:00 |
08:29:05.10 |
-57:05:32.2 |
HIP 41680 |
12.96 |
| 2026-05-19 00:00 |
08:29:07.11 |
-57:04:53.3 |
HIP 41680 |
13.42 |
| 2026-05-19 12:00 |
08:29:09.16 |
-57:04:14.6 |
HIP 41680 |
13.89 |
| 2026-05-20 00:00 |
08:29:11.25 |
-57:03:36.1 |
HIP 41680 |
14.38 |
| 2026-05-20 12:00 |
08:29:13.37 |
-57:02:57.7 |
HIP 41680 |
14.88 |
| 2026-05-21 00:00 |
08:29:15.54 |
-57:02:19.5 |
HIP 41680 |
15.39 |
| 2026-05-21 12:00 |
08:29:17.74 |
-57:01:41.5 |
HIP 41680 |
15.91 |
| 2026-05-22 00:00 |
08:29:19.98 |
-57:01:03.7 |
HIP 41680 |
16.44 |
| 2026-05-22 12:00 |
08:29:22.25 |
-57:00:26.0 |
HIP 41680 |
16.98 |
| 2026-05-23 00:00 |
08:29:24.56 |
-56:59:48.5 |
HIP 41680 |
17.53 |
| 2026-05-23 12:00 |
08:29:26.91 |
-56:59:11.2 |
HIP 41680 |
18.08 |
| 2026-05-24 00:00 |
08:29:29.29 |
-56:58:34.1 |
HIP 41680 |
18.64 |
| 2026-05-24 12:00 |
08:29:31.71 |
-56:57:57.2 |
HIP 41680 |
19.21 |
| 2026-05-25 00:00 |
08:29:34.17 |
-56:57:20.4 |
HIP 41680 |
19.78 |
| 2026-05-25 12:00 |
08:29:36.66 |
-56:56:43.9 |
HIP 41680 |
20.35 |
| 2026-05-26 00:00 |
08:29:39.19 |
-56:56:07.5 |
HIP 41680 |
20.93 |
| 2026-05-26 12:00 |
08:29:41.75 |
-56:55:31.3 |
HIP 41680 |
21.51 |
| 2026-05-27 00:00 |
08:29:44.35 |
-56:54:55.4 |
HIP 41680 |
22.09 |
| 2026-05-27 12:00 |
08:29:46.98 |
-56:54:19.6 |
HIP 41680 |
22.68 |
| 2026-05-28 00:00 |
08:29:49.64 |
-56:53:44.0 |
HIP 41680 |
23.27 |
| 2026-05-28 12:00 |
08:29:52.34 |
-56:53:08.6 |
HIP 41680 |
23.86 |
| 2026-05-29 00:00 |
08:29:55.08 |
-56:52:33.5 |
HIP 41864 |
23.66 |
| 2026-05-29 12:00 |
08:29:57.85 |
-56:51:58.5 |
HIP 41864 |
23.00 |
| 2026-05-30 00:00 |
08:30:00.65 |
-56:51:23.8 |
HIP 41864 |
22.35 |
| 2026-05-30 12:00 |
08:30:03.48 |
-56:50:49.3 |
HIP 41864 |
21.70 |
| 2026-05-31 00:00 |
08:30:06.35 |
-56:50:14.9 |
HIP 41864 |
21.05 |
| 2026-05-31 12:00 |
08:30:09.25 |
-56:49:40.8 |
HIP 41864 |
20.40 |
| 2026-06-01 00:00 |
08:30:12.19 |
-56:49:06.9 |
HIP 41864 |
19.75 |
| 2026-06-01 12:00 |
08:30:15.16 |
-56:48:33.3 |
HIP 41864 |
19.10 |
| 2026-06-02 00:00 |
08:30:18.16 |
-56:47:59.8 |
HIP 41864 |
18.45 |