メタデータ
| 項目 |
値 |
| Designation |
C/1999 S3 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1999-11-09T00:22:32.453760Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:01Z |
| Obs used |
638 |
| NEO |
- |
| M1 |
4.800 |
| K1 |
29.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1999-10-24.0000000 |
| e |
0.89996276 |
| q (au) |
1.894944 |
| a (au) |
18.942389 |
| i (deg) |
70.560909 |
| Ω (om, deg) |
11.878195 |
| ω (w, deg) |
44.128165 |
| M (ma, deg) |
359.808532 |
等級
散乱 + 全体線形
$$
M_a = (7.393 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.393 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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) |
| 2026-06-01 00:00 |
12:25:02.91 |
-40:43:26.8 |
HIP 60563 |
3.67 |
| 2026-06-01 12:00 |
12:25:00.90 |
-40:42:52.4 |
HIP 60563 |
2.99 |
| 2026-06-02 00:00 |
12:24:58.92 |
-40:42:18.1 |
HIP 60563 |
2.31 |
| 2026-06-02 12:00 |
12:24:56.98 |
-40:41:43.7 |
HIP 60563 |
1.63 |
| 2026-06-03 00:00 |
12:24:55.08 |
-40:41:09.4 |
HIP 60563 |
0.96 |
| 2026-06-03 12:00 |
12:24:53.20 |
-40:40:35.2 |
HIP 60563 |
0.34 |
| 2026-06-04 00:00 |
12:24:51.37 |
-40:40:00.9 |
HIP 60563 |
0.44 |
| 2026-06-04 12:00 |
12:24:49.57 |
-40:39:26.6 |
HIP 60563 |
1.08 |
| 2026-06-05 00:00 |
12:24:47.80 |
-40:38:52.4 |
HIP 60563 |
1.73 |
| 2026-06-05 12:00 |
12:24:46.07 |
-40:38:18.3 |
HIP 60563 |
2.38 |
| 2026-06-06 00:00 |
12:24:44.37 |
-40:37:44.1 |
HIP 60563 |
3.04 |
| 2026-06-06 12:00 |
12:24:42.71 |
-40:37:10.0 |
HIP 60563 |
3.68 |
| 2026-06-07 00:00 |
12:24:41.09 |
-40:36:36.0 |
HIP 60563 |
4.33 |
| 2026-06-07 12:00 |
12:24:39.50 |
-40:36:01.9 |
HIP 60563 |
4.97 |
| 2026-06-08 00:00 |
12:24:37.95 |
-40:35:28.0 |
HIP 60563 |
5.60 |
| 2026-06-08 12:00 |
12:24:36.43 |
-40:34:54.0 |
HIP 60563 |
6.24 |
| 2026-06-09 00:00 |
12:24:34.95 |
-40:34:20.2 |
HIP 60563 |
6.87 |
| 2026-06-09 12:00 |
12:24:33.50 |
-40:33:46.4 |
HIP 60563 |
7.49 |
| 2026-06-10 00:00 |
12:24:32.09 |
-40:33:12.6 |
HIP 60563 |
8.11 |
| 2026-06-10 12:00 |
12:24:30.72 |
-40:32:38.9 |
HIP 60563 |
8.73 |
| 2026-06-11 00:00 |
12:24:29.38 |
-40:32:05.3 |
HIP 60563 |
9.34 |
| 2026-06-11 12:00 |
12:24:28.08 |
-40:31:31.7 |
HIP 60563 |
9.95 |
| 2026-06-12 00:00 |
12:24:26.82 |
-40:30:58.2 |
HIP 60563 |
10.56 |
| 2026-06-12 12:00 |
12:24:25.59 |
-40:30:24.7 |
HIP 60563 |
11.16 |
| 2026-06-13 00:00 |
12:24:24.40 |
-40:29:51.4 |
HIP 60563 |
11.76 |
| 2026-06-13 12:00 |
12:24:23.24 |
-40:29:18.1 |
HIP 60563 |
12.35 |
| 2026-06-14 00:00 |
12:24:22.12 |
-40:28:44.9 |
HIP 60563 |
12.94 |
| 2026-06-14 12:00 |
12:24:21.04 |
-40:28:11.8 |
HIP 60563 |
13.52 |
| 2026-06-15 00:00 |
12:24:20.00 |
-40:27:38.8 |
HIP 60563 |
14.11 |
| 2026-06-15 12:00 |
12:24:18.99 |
-40:27:05.8 |
HIP 60563 |
14.68 |
| 2026-06-16 00:00 |
12:24:18.02 |
-40:26:33.0 |
HIP 60563 |
15.26 |
| 2026-06-16 12:00 |
12:24:17.08 |
-40:26:00.2 |
HIP 60563 |
15.82 |
| 2026-06-17 00:00 |
12:24:16.18 |
-40:25:27.6 |
HIP 60563 |
16.39 |
| 2026-06-17 12:00 |
12:24:15.32 |
-40:24:55.0 |
HIP 60563 |
16.95 |
| 2026-06-18 00:00 |
12:24:14.50 |
-40:24:22.6 |
HIP 60563 |
17.51 |
| 2026-06-18 12:00 |
12:24:13.71 |
-40:23:50.2 |
HIP 60563 |
18.06 |
| 2026-06-19 00:00 |
12:24:12.96 |
-40:23:18.0 |
HIP 60563 |
18.61 |
| 2026-06-19 12:00 |
12:24:12.25 |
-40:22:45.9 |
HIP 60563 |
19.15 |
| 2026-06-20 00:00 |
12:24:11.57 |
-40:22:13.9 |
HIP 60563 |
19.69 |
| 2026-06-20 12:00 |
12:24:10.93 |
-40:21:42.0 |
HIP 60563 |
20.23 |
| 2026-06-21 00:00 |
12:24:10.33 |
-40:21:10.2 |
HIP 60563 |
20.76 |
| 2026-06-21 12:00 |
12:24:09.76 |
-40:20:38.5 |
HIP 60563 |
21.29 |
| 2026-06-22 00:00 |
12:24:09.23 |
-40:20:07.0 |
HIP 60563 |
21.81 |