メタデータ
| 項目 |
値 |
| Designation |
C/2003 S3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2003-04-10T12:54:00.440640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:31Z |
| Obs used |
122 |
| NEO |
- |
| M1 |
6.700 |
| K1 |
9.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2003-10-21.0000000 |
| e |
1.00180553 |
| q (au) |
8.129525 |
| a (au) |
-4502.566031 |
| i (deg) |
151.497754 |
| Ω (om, deg) |
226.388802 |
| ω (w, deg) |
154.570171 |
| M (ma, deg) |
0.000631 |
等級
散乱 + 全体線形
$$
M_a = (0.591 + 5.968\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
0.591 |
| n |
5.968 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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 |
20:58:43.36 |
-46:50:17.5 |
HIP 103676 |
20.91 |
| 2026-09-20 12:00 |
20:58:39.97 |
-46:50:10.0 |
HIP 103676 |
21.47 |
| 2026-09-21 00:00 |
20:58:36.61 |
-46:50:02.3 |
HIP 103676 |
22.03 |
| 2026-09-21 12:00 |
20:58:33.28 |
-46:49:54.4 |
HIP 103478 |
22.14 |
| 2026-09-22 00:00 |
20:58:29.97 |
-46:49:46.3 |
HIP 103478 |
21.84 |
| 2026-09-22 12:00 |
20:58:26.70 |
-46:49:38.0 |
HIP 103478 |
21.55 |
| 2026-09-23 00:00 |
20:58:23.45 |
-46:49:29.5 |
HIP 103478 |
21.28 |
| 2026-09-23 12:00 |
20:58:20.23 |
-46:49:20.8 |
HIP 103478 |
21.01 |
| 2026-09-24 00:00 |
20:58:17.03 |
-46:49:11.9 |
HIP 103478 |
20.75 |
| 2026-09-24 12:00 |
20:58:13.87 |
-46:49:02.8 |
HIP 103478 |
20.51 |
| 2026-09-25 00:00 |
20:58:10.74 |
-46:48:53.5 |
HIP 103478 |
20.27 |
| 2026-09-25 12:00 |
20:58:07.63 |
-46:48:44.0 |
HIP 103478 |
20.04 |
| 2026-09-26 00:00 |
20:58:04.56 |
-46:48:34.3 |
HIP 103478 |
19.83 |
| 2026-09-26 12:00 |
20:58:01.51 |
-46:48:24.4 |
HIP 103478 |
19.62 |
| 2026-09-27 00:00 |
20:57:58.49 |
-46:48:14.3 |
HIP 103478 |
19.43 |
| 2026-09-27 12:00 |
20:57:55.51 |
-46:48:04.0 |
HIP 103478 |
19.24 |
| 2026-09-28 00:00 |
20:57:52.55 |
-46:47:53.6 |
HIP 103478 |
19.06 |
| 2026-09-28 12:00 |
20:57:49.62 |
-46:47:42.9 |
HIP 103478 |
18.90 |
| 2026-09-29 00:00 |
20:57:46.73 |
-46:47:32.1 |
HIP 103478 |
18.74 |
| 2026-09-29 12:00 |
20:57:43.86 |
-46:47:21.0 |
HIP 103478 |
18.60 |
| 2026-09-30 00:00 |
20:57:41.02 |
-46:47:09.8 |
HIP 103478 |
18.47 |
| 2026-09-30 12:00 |
20:57:38.22 |
-46:46:58.4 |
HIP 103478 |
18.34 |
| 2026-10-01 00:00 |
20:57:35.45 |
-46:46:46.8 |
HIP 103478 |
18.23 |
| 2026-10-01 12:00 |
20:57:32.71 |
-46:46:35.0 |
HIP 103478 |
18.12 |
| 2026-10-02 00:00 |
20:57:30.00 |
-46:46:23.1 |
HIP 103478 |
18.03 |
| 2026-10-02 12:00 |
20:57:27.32 |
-46:46:10.9 |
HIP 103478 |
17.94 |
| 2026-10-03 00:00 |
20:57:24.67 |
-46:45:58.6 |
HIP 103478 |
17.87 |
| 2026-10-03 12:00 |
20:57:22.06 |
-46:45:46.1 |
HIP 103478 |
17.80 |
| 2026-10-04 00:00 |
20:57:19.47 |
-46:45:33.4 |
HIP 103478 |
17.74 |
| 2026-10-04 12:00 |
20:57:16.92 |
-46:45:20.5 |
HIP 103478 |
17.69 |
| 2026-10-05 00:00 |
20:57:14.40 |
-46:45:07.5 |
HIP 103478 |
17.65 |
| 2026-10-05 12:00 |
20:57:11.92 |
-46:44:54.3 |
HIP 103478 |
17.62 |
| 2026-10-06 00:00 |
20:57:09.47 |
-46:44:40.9 |
HIP 103478 |
17.59 |
| 2026-10-06 12:00 |
20:57:07.05 |
-46:44:27.3 |
HIP 103478 |
17.57 |
| 2026-10-07 00:00 |
20:57:04.66 |
-46:44:13.6 |
HIP 103478 |
17.56 |
| 2026-10-07 12:00 |
20:57:02.31 |
-46:43:59.6 |
HIP 103478 |
17.56 |
| 2026-10-08 00:00 |
20:57:00.00 |
-46:43:45.6 |
HIP 103478 |
17.57 |
| 2026-10-08 12:00 |
20:56:57.71 |
-46:43:31.3 |
HIP 103478 |
17.58 |
| 2026-10-09 00:00 |
20:56:55.46 |
-46:43:16.9 |
HIP 103478 |
17.59 |
| 2026-10-09 12:00 |
20:56:53.24 |
-46:43:02.3 |
HIP 103478 |
17.62 |
| 2026-10-10 00:00 |
20:56:51.06 |
-46:42:47.5 |
HIP 103478 |
17.65 |
| 2026-10-10 12:00 |
20:56:48.91 |
-46:42:32.6 |
HIP 103478 |
17.68 |
| 2026-10-11 00:00 |
20:56:46.79 |
-46:42:17.5 |
HIP 103478 |
17.72 |