メタデータ
| 項目 |
値 |
| Designation |
C/2002 V2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-05-13T16:33:06.503040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:22Z |
| Obs used |
317 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-08-14.0000000 |
| e |
0.99864267 |
| q (au) |
6.812027 |
| a (au) |
5018.714542 |
| i (deg) |
166.776236 |
| Ω (om, deg) |
20.234100 |
| ω (w, deg) |
314.679306 |
| M (ma, deg) |
0.000256 |
等級
散乱 + 全体線形
$$
M_a = (14.074 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.074 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.744 |
| k |
0.800 |
| δ90 |
9.898 |
| 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 |
19:41:42.15 |
-07:50:25.9 |
HIP 96813 |
24.25 |
| 2026-05-12 12:00 |
19:41:40.51 |
-07:50:20.6 |
HIP 96813 |
23.94 |
| 2026-05-13 00:00 |
19:41:38.86 |
-07:50:15.4 |
HIP 96813 |
23.64 |
| 2026-05-13 12:00 |
19:41:37.18 |
-07:50:10.3 |
HIP 96813 |
23.33 |
| 2026-05-14 00:00 |
19:41:35.47 |
-07:50:05.3 |
HIP 96813 |
23.03 |
| 2026-05-14 12:00 |
19:41:33.75 |
-07:50:00.4 |
HIP 96813 |
22.74 |
| 2026-05-15 00:00 |
19:41:32.00 |
-07:49:55.6 |
HIP 96813 |
22.44 |
| 2026-05-15 12:00 |
19:41:30.23 |
-07:49:50.9 |
HIP 96813 |
22.15 |
| 2026-05-16 00:00 |
19:41:28.44 |
-07:49:46.3 |
HIP 96813 |
21.86 |
| 2026-05-16 12:00 |
19:41:26.63 |
-07:49:41.8 |
HIP 96813 |
21.58 |
| 2026-05-17 00:00 |
19:41:24.79 |
-07:49:37.4 |
HIP 96813 |
21.30 |
| 2026-05-17 12:00 |
19:41:22.93 |
-07:49:33.1 |
HIP 96813 |
21.03 |
| 2026-05-18 00:00 |
19:41:21.05 |
-07:49:28.9 |
HIP 96813 |
20.76 |
| 2026-05-18 12:00 |
19:41:19.15 |
-07:49:24.7 |
HIP 96813 |
20.50 |
| 2026-05-19 00:00 |
19:41:17.23 |
-07:49:20.7 |
HIP 96754 |
20.14 |
| 2026-05-19 12:00 |
19:41:15.28 |
-07:49:16.8 |
HIP 96754 |
19.75 |
| 2026-05-20 00:00 |
19:41:13.32 |
-07:49:13.0 |
HIP 96754 |
19.35 |
| 2026-05-20 12:00 |
19:41:11.33 |
-07:49:09.3 |
HIP 96754 |
18.96 |
| 2026-05-21 00:00 |
19:41:09.32 |
-07:49:05.7 |
HIP 96754 |
18.56 |
| 2026-05-21 12:00 |
19:41:07.29 |
-07:49:02.2 |
HIP 96754 |
18.16 |
| 2026-05-22 00:00 |
19:41:05.24 |
-07:48:58.8 |
HIP 96754 |
17.77 |
| 2026-05-22 12:00 |
19:41:03.17 |
-07:48:55.5 |
HIP 96754 |
17.37 |
| 2026-05-23 00:00 |
19:41:01.08 |
-07:48:52.3 |
HIP 96754 |
16.98 |
| 2026-05-23 12:00 |
19:40:58.97 |
-07:48:49.2 |
HIP 96754 |
16.59 |
| 2026-05-24 00:00 |
19:40:56.84 |
-07:48:46.3 |
HIP 96754 |
16.20 |
| 2026-05-24 12:00 |
19:40:54.68 |
-07:48:43.4 |
HIP 96754 |
15.81 |
| 2026-05-25 00:00 |
19:40:52.51 |
-07:48:40.6 |
HIP 96754 |
15.43 |
| 2026-05-25 12:00 |
19:40:50.32 |
-07:48:37.9 |
HIP 96754 |
15.06 |
| 2026-05-26 00:00 |
19:40:48.11 |
-07:48:35.4 |
HIP 96754 |
14.68 |
| 2026-05-26 12:00 |
19:40:45.88 |
-07:48:32.9 |
HIP 96754 |
14.32 |
| 2026-05-27 00:00 |
19:40:43.63 |
-07:48:30.5 |
HIP 96754 |
13.96 |
| 2026-05-27 12:00 |
19:40:41.36 |
-07:48:28.3 |
HIP 96754 |
13.62 |
| 2026-05-28 00:00 |
19:40:39.08 |
-07:48:26.1 |
HIP 96754 |
13.28 |
| 2026-05-28 12:00 |
19:40:36.77 |
-07:48:24.1 |
HIP 96754 |
12.96 |
| 2026-05-29 00:00 |
19:40:34.45 |
-07:48:22.2 |
HIP 96754 |
12.65 |
| 2026-05-29 12:00 |
19:40:32.10 |
-07:48:20.3 |
HIP 96754 |
12.35 |
| 2026-05-30 00:00 |
19:40:29.74 |
-07:48:18.6 |
HIP 96754 |
12.07 |
| 2026-05-30 12:00 |
19:40:27.36 |
-07:48:17.0 |
HIP 96754 |
11.81 |
| 2026-05-31 00:00 |
19:40:24.96 |
-07:48:15.4 |
HIP 96754 |
11.57 |
| 2026-05-31 12:00 |
19:40:22.55 |
-07:48:14.0 |
HIP 96754 |
11.36 |
| 2026-06-01 00:00 |
19:40:20.11 |
-07:48:12.7 |
HIP 96754 |
11.16 |
| 2026-06-01 12:00 |
19:40:17.66 |
-07:48:11.5 |
HIP 96754 |
11.00 |
| 2026-06-02 00:00 |
19:40:15.19 |
-07:48:10.4 |
HIP 96754 |
10.86 |