メタデータ
| 項目 |
値 |
| Designation |
C/2002 Q3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2002-08-19T00:27:24.831360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:20Z |
| Obs used |
75 |
| NEO |
- |
| M1 |
17.100 |
| 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) |
2002-08-29.0000000 |
| e |
0.99831744 |
| q (au) |
1.306123 |
| a (au) |
776.272581 |
| i (deg) |
96.895223 |
| Ω (om, deg) |
154.151313 |
| ω (w, deg) |
125.698640 |
| M (ma, deg) |
0.000455 |
等級
散乱 + 全体線形
$$
M_a = (18.038 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
18.038 |
| 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) |
| 2026-09-20 00:00 |
08:37:12.41 |
-59:12:06.0 |
HIP 42158 |
23.72 |
| 2026-09-20 12:00 |
08:37:15.55 |
-59:12:35.6 |
HIP 42158 |
23.50 |
| 2026-09-21 00:00 |
08:37:18.66 |
-59:13:05.3 |
HIP 42158 |
23.29 |
| 2026-09-21 12:00 |
08:37:21.75 |
-59:13:35.3 |
HIP 42158 |
23.10 |
| 2026-09-22 00:00 |
08:37:24.80 |
-59:14:05.4 |
HIP 42158 |
22.91 |
| 2026-09-22 12:00 |
08:37:27.81 |
-59:14:35.7 |
HIP 42158 |
22.74 |
| 2026-09-23 00:00 |
08:37:30.80 |
-59:15:06.2 |
HIP 42158 |
22.58 |
| 2026-09-23 12:00 |
08:37:33.76 |
-59:15:36.9 |
HIP 42158 |
22.43 |
| 2026-09-24 00:00 |
08:37:36.68 |
-59:16:07.7 |
HIP 42158 |
22.29 |
| 2026-09-24 12:00 |
08:37:39.57 |
-59:16:38.7 |
HIP 42158 |
22.16 |
| 2026-09-25 00:00 |
08:37:42.43 |
-59:17:09.9 |
HIP 42158 |
22.05 |
| 2026-09-25 12:00 |
08:37:45.25 |
-59:17:41.2 |
HIP 42158 |
21.95 |
| 2026-09-26 00:00 |
08:37:48.04 |
-59:18:12.7 |
HIP 42158 |
21.86 |
| 2026-09-26 12:00 |
08:37:50.80 |
-59:18:44.4 |
HIP 42505 |
21.55 |
| 2026-09-27 00:00 |
08:37:53.53 |
-59:19:16.2 |
HIP 42505 |
20.94 |
| 2026-09-27 12:00 |
08:37:56.22 |
-59:19:48.2 |
HIP 42505 |
20.34 |
| 2026-09-28 00:00 |
08:37:58.87 |
-59:20:20.4 |
HIP 42505 |
19.74 |
| 2026-09-28 12:00 |
08:38:01.50 |
-59:20:52.7 |
HIP 42505 |
19.14 |
| 2026-09-29 00:00 |
08:38:04.09 |
-59:21:25.1 |
HIP 42505 |
18.54 |
| 2026-09-29 12:00 |
08:38:06.64 |
-59:21:57.7 |
HIP 42505 |
17.95 |
| 2026-09-30 00:00 |
08:38:09.16 |
-59:22:30.5 |
HIP 42505 |
17.37 |
| 2026-09-30 12:00 |
08:38:11.65 |
-59:23:03.4 |
HIP 42505 |
16.79 |
| 2026-10-01 00:00 |
08:38:14.10 |
-59:23:36.4 |
HIP 42505 |
16.21 |
| 2026-10-01 12:00 |
08:38:16.51 |
-59:24:09.6 |
HIP 42505 |
15.65 |
| 2026-10-02 00:00 |
08:38:18.89 |
-59:24:42.9 |
HIP 42505 |
15.09 |
| 2026-10-02 12:00 |
08:38:21.24 |
-59:25:16.4 |
HIP 42505 |
14.54 |
| 2026-10-03 00:00 |
08:38:23.54 |
-59:25:50.0 |
HIP 42505 |
14.00 |
| 2026-10-03 12:00 |
08:38:25.81 |
-59:26:23.7 |
HIP 42505 |
13.48 |
| 2026-10-04 00:00 |
08:38:28.05 |
-59:26:57.6 |
HIP 42505 |
12.96 |
| 2026-10-04 12:00 |
08:38:30.25 |
-59:27:31.6 |
HIP 42505 |
12.46 |
| 2026-10-05 00:00 |
08:38:32.41 |
-59:28:05.7 |
HIP 42505 |
11.98 |
| 2026-10-05 12:00 |
08:38:34.53 |
-59:28:39.9 |
HIP 42505 |
11.51 |
| 2026-10-06 00:00 |
08:38:36.62 |
-59:29:14.3 |
HIP 42505 |
11.07 |
| 2026-10-06 12:00 |
08:38:38.67 |
-59:29:48.8 |
HIP 42505 |
10.64 |
| 2026-10-07 00:00 |
08:38:40.68 |
-59:30:23.4 |
HIP 42505 |
10.24 |
| 2026-10-07 12:00 |
08:38:42.66 |
-59:30:58.1 |
HIP 42505 |
9.88 |
| 2026-10-08 00:00 |
08:38:44.59 |
-59:31:32.9 |
HIP 42505 |
9.54 |
| 2026-10-08 12:00 |
08:38:46.49 |
-59:32:07.9 |
HIP 42505 |
9.24 |
| 2026-10-09 00:00 |
08:38:48.35 |
-59:32:42.9 |
HIP 42505 |
8.98 |
| 2026-10-09 12:00 |
08:38:50.17 |
-59:33:18.1 |
HIP 42505 |
8.76 |
| 2026-10-10 00:00 |
08:38:51.95 |
-59:33:53.3 |
HIP 42505 |
8.58 |
| 2026-10-10 12:00 |
08:38:53.70 |
-59:34:28.7 |
HIP 42505 |
8.46 |
| 2026-10-11 00:00 |
08:38:55.40 |
-59:35:04.1 |
HIP 42505 |
8.39 |