メタデータ
| 項目 |
値 |
| Designation |
C/2010 S1 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2013-05-20T07:54:44.360640Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:47Z |
| Obs used |
8511 |
| NEO |
- |
| M1 |
5.800 |
| K1 |
6.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2012-10-29.0000000 |
| e |
1.00124864 |
| q (au) |
5.899919 |
| a (au) |
-4725.086529 |
| i (deg) |
125.335283 |
| Ω (om, deg) |
93.432292 |
| ω (w, deg) |
118.617187 |
| M (ma, deg) |
-0.000617 |
等級
散乱 + 全体線形
$$
M_a = (1.804 + 4.182\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
1.804 |
| n |
4.182 |
| gf |
1.000 |
| gb |
-0.503 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 2010-09-21 |
2011-08-06 |
+19.8672 |
-18.186 |
| 2011-08-06 |
2013-05-20 |
-7.0625 |
+5.448 |
| 2013-05-21 |
2014-07-27 |
+22.0489 |
-17.120 |
| 2014-07-27 |
2015-09-15 |
-9.4589 |
+8.899 |
log10 r = log10(太陽距離/AU)、Δ = 地球距離(AU)
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
12:59:37.31 |
-58:15:10.1 |
HIP 63315 |
8.61 |
| 2026-07-29 12:00 |
12:59:38.92 |
-58:14:26.8 |
HIP 63315 |
8.87 |
| 2026-07-30 00:00 |
12:59:40.58 |
-58:13:43.7 |
HIP 63315 |
9.19 |
| 2026-07-30 12:00 |
12:59:42.31 |
-58:13:00.9 |
HIP 63315 |
9.56 |
| 2026-07-31 00:00 |
12:59:44.09 |
-58:12:18.4 |
HIP 63315 |
9.99 |
| 2026-07-31 12:00 |
12:59:45.93 |
-58:11:36.3 |
HIP 63315 |
10.45 |
| 2026-08-01 00:00 |
12:59:47.83 |
-58:10:54.4 |
HIP 63315 |
10.95 |
| 2026-08-01 12:00 |
12:59:49.78 |
-58:10:12.8 |
HIP 63315 |
11.48 |
| 2026-08-02 00:00 |
12:59:51.80 |
-58:09:31.6 |
HIP 63315 |
12.04 |
| 2026-08-02 12:00 |
12:59:53.86 |
-58:08:50.7 |
HIP 63315 |
12.62 |
| 2026-08-03 00:00 |
12:59:55.99 |
-58:08:10.0 |
HIP 63315 |
13.22 |
| 2026-08-03 12:00 |
12:59:58.17 |
-58:07:29.7 |
HIP 63315 |
13.83 |
| 2026-08-04 00:00 |
13:00:00.41 |
-58:06:49.8 |
HIP 63315 |
14.46 |
| 2026-08-04 12:00 |
13:00:02.70 |
-58:06:10.1 |
HIP 63315 |
15.10 |
| 2026-08-05 00:00 |
13:00:05.05 |
-58:05:30.8 |
HIP 63315 |
15.75 |
| 2026-08-05 12:00 |
13:00:07.46 |
-58:04:51.8 |
HIP 63315 |
16.41 |
| 2026-08-06 00:00 |
13:00:09.92 |
-58:04:13.1 |
HIP 63315 |
17.08 |
| 2026-08-06 12:00 |
13:00:12.43 |
-58:03:34.7 |
HIP 63315 |
17.75 |
| 2026-08-07 00:00 |
13:00:15.00 |
-58:02:56.7 |
HIP 63315 |
18.43 |
| 2026-08-07 12:00 |
13:00:17.62 |
-58:02:19.0 |
HIP 63315 |
19.11 |
| 2026-08-08 00:00 |
13:00:20.30 |
-58:01:41.7 |
HIP 63315 |
19.79 |
| 2026-08-08 12:00 |
13:00:23.03 |
-58:01:04.7 |
HIP 63315 |
20.48 |
| 2026-08-09 00:00 |
13:00:25.82 |
-58:00:28.1 |
HIP 63315 |
21.17 |
| 2026-08-09 12:00 |
13:00:28.65 |
-57:59:51.8 |
HIP 63315 |
21.87 |
| 2026-08-10 00:00 |
13:00:31.54 |
-57:59:15.8 |
HIP 63315 |
22.56 |
| 2026-08-10 12:00 |
13:00:34.48 |
-57:58:40.2 |
HIP 63315 |
23.26 |
| 2026-08-11 00:00 |
13:00:37.48 |
-57:58:05.0 |
HIP 63315 |
23.96 |
| 2026-08-11 12:00 |
13:00:40.52 |
-57:57:30.1 |
HIP 63315 |
24.66 |
| 2026-08-12 00:00 |
13:00:43.62 |
-57:56:55.6 |
HIP 63315 |
25.36 |
| 2026-08-12 12:00 |
13:00:46.77 |
-57:56:21.4 |
HIP 63438 |
25.94 |
| 2026-08-13 00:00 |
13:00:49.97 |
-57:55:47.6 |
HIP 63438 |
25.51 |
| 2026-08-13 12:00 |
13:00:53.22 |
-57:55:14.2 |
HIP 63517 |
24.94 |
| 2026-08-14 00:00 |
13:00:56.51 |
-57:54:41.1 |
HIP 63517 |
24.39 |
| 2026-08-14 12:00 |
13:00:59.86 |
-57:54:08.4 |
HIP 63517 |
23.84 |
| 2026-08-15 00:00 |
13:01:03.26 |
-57:53:36.1 |
HIP 63517 |
23.32 |
| 2026-08-15 12:00 |
13:01:06.71 |
-57:53:04.1 |
HIP 63517 |
22.81 |
| 2026-08-16 00:00 |
13:01:10.20 |
-57:52:32.5 |
HIP 63517 |
22.31 |
| 2026-08-16 12:00 |
13:01:13.74 |
-57:52:01.3 |
HIP 63725 |
21.65 |
| 2026-08-17 00:00 |
13:01:17.33 |
-57:51:30.5 |
HIP 63725 |
20.98 |
| 2026-08-17 12:00 |
13:01:20.97 |
-57:51:00.1 |
HIP 63725 |
20.31 |
| 2026-08-18 00:00 |
13:01:24.65 |
-57:50:30.0 |
HIP 63725 |
19.64 |
| 2026-08-18 12:00 |
13:01:28.38 |
-57:50:00.3 |
HIP 63725 |
18.97 |
| 2026-08-19 00:00 |
13:01:32.16 |
-57:49:31.0 |
HIP 63725 |
18.30 |