メタデータ
| 項目 |
値 |
| Designation |
C/2006 S2 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2007-05-07T08:26:31.346880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:59Z |
| Obs used |
175 |
| NEO |
- |
| M1 |
13.800 |
| 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) |
2006-12-27.0000000 |
| e |
1.00195952 |
| q (au) |
3.161510 |
| a (au) |
-1613.414402 |
| i (deg) |
98.959134 |
| Ω (om, deg) |
113.887214 |
| ω (w, deg) |
166.340993 |
| M (ma, deg) |
-0.001998 |
等級
散乱 + 全体線形
$$
M_a = (12.406 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.406 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.502 |
| 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) |
| 2026-05-12 00:00 |
07:34:03.45 |
-25:37:10.3 |
HIP 36929 |
23.67 |
| 2026-05-12 12:00 |
07:34:05.12 |
-25:36:39.4 |
HIP 36929 |
23.07 |
| 2026-05-13 00:00 |
07:34:06.81 |
-25:36:08.6 |
HIP 36929 |
22.46 |
| 2026-05-13 12:00 |
07:34:08.53 |
-25:35:38.1 |
HIP 36929 |
21.86 |
| 2026-05-14 00:00 |
07:34:10.27 |
-25:35:07.7 |
HIP 36929 |
21.25 |
| 2026-05-14 12:00 |
07:34:12.04 |
-25:34:37.5 |
HIP 36929 |
20.65 |
| 2026-05-15 00:00 |
07:34:13.83 |
-25:34:07.6 |
HIP 36929 |
20.04 |
| 2026-05-15 12:00 |
07:34:15.65 |
-25:33:37.8 |
HIP 36929 |
19.44 |
| 2026-05-16 00:00 |
07:34:17.49 |
-25:33:08.3 |
HIP 36929 |
18.83 |
| 2026-05-16 12:00 |
07:34:19.35 |
-25:32:38.9 |
HIP 36929 |
18.22 |
| 2026-05-17 00:00 |
07:34:21.23 |
-25:32:09.8 |
HIP 36929 |
17.61 |
| 2026-05-17 12:00 |
07:34:23.14 |
-25:31:40.8 |
HIP 36929 |
17.01 |
| 2026-05-18 00:00 |
07:34:25.08 |
-25:31:12.1 |
HIP 36929 |
16.40 |
| 2026-05-18 12:00 |
07:34:27.03 |
-25:30:43.6 |
HIP 36929 |
15.79 |
| 2026-05-19 00:00 |
07:34:29.01 |
-25:30:15.3 |
HIP 36929 |
15.18 |
| 2026-05-19 12:00 |
07:34:31.01 |
-25:29:47.3 |
HIP 36929 |
14.57 |
| 2026-05-20 00:00 |
07:34:33.03 |
-25:29:19.4 |
HIP 36929 |
13.97 |
| 2026-05-20 12:00 |
07:34:35.08 |
-25:28:51.8 |
HIP 36929 |
13.36 |
| 2026-05-21 00:00 |
07:34:37.14 |
-25:28:24.4 |
HIP 36929 |
12.76 |
| 2026-05-21 12:00 |
07:34:39.23 |
-25:27:57.2 |
HIP 36929 |
12.15 |
| 2026-05-22 00:00 |
07:34:41.34 |
-25:27:30.2 |
HIP 36929 |
11.55 |
| 2026-05-22 12:00 |
07:34:43.47 |
-25:27:03.4 |
HIP 36929 |
10.95 |
| 2026-05-23 00:00 |
07:34:45.63 |
-25:26:36.9 |
HIP 36929 |
10.36 |
| 2026-05-23 12:00 |
07:34:47.80 |
-25:26:10.6 |
HIP 36929 |
9.77 |
| 2026-05-24 00:00 |
07:34:50.00 |
-25:25:44.6 |
HIP 36929 |
9.18 |
| 2026-05-24 12:00 |
07:34:52.21 |
-25:25:18.8 |
HIP 36929 |
8.60 |
| 2026-05-25 00:00 |
07:34:54.45 |
-25:24:53.2 |
HIP 36929 |
8.03 |
| 2026-05-25 12:00 |
07:34:56.71 |
-25:24:27.8 |
HIP 36929 |
7.47 |
| 2026-05-26 00:00 |
07:34:58.98 |
-25:24:02.7 |
HIP 36929 |
6.93 |
| 2026-05-26 12:00 |
07:35:01.28 |
-25:23:37.8 |
HIP 36929 |
6.40 |
| 2026-05-27 00:00 |
07:35:03.60 |
-25:23:13.1 |
HIP 36929 |
5.89 |
| 2026-05-27 12:00 |
07:35:05.93 |
-25:22:48.7 |
HIP 36929 |
5.42 |
| 2026-05-28 00:00 |
07:35:08.29 |
-25:22:24.5 |
HIP 36929 |
4.98 |
| 2026-05-28 12:00 |
07:35:10.67 |
-25:22:00.5 |
HIP 36929 |
4.59 |
| 2026-05-29 00:00 |
07:35:13.06 |
-25:21:36.8 |
HIP 36929 |
4.27 |
| 2026-05-29 12:00 |
07:35:15.47 |
-25:21:13.3 |
HIP 36929 |
4.02 |
| 2026-05-30 00:00 |
07:35:17.91 |
-25:20:50.1 |
HIP 36929 |
3.88 |
| 2026-05-30 12:00 |
07:35:20.36 |
-25:20:27.1 |
HIP 36929 |
3.84 |
| 2026-05-31 00:00 |
07:35:22.83 |
-25:20:04.4 |
HIP 36929 |
3.91 |
| 2026-05-31 12:00 |
07:35:25.31 |
-25:19:41.9 |
HIP 36944 |
3.72 |
| 2026-06-01 00:00 |
07:35:27.82 |
-25:19:19.6 |
HIP 36944 |
3.28 |
| 2026-06-01 12:00 |
07:35:30.34 |
-25:18:57.6 |
HIP 36944 |
2.91 |
| 2026-06-02 00:00 |
07:35:32.89 |
-25:18:35.9 |
HIP 36944 |
2.67 |