メタデータ
| 項目 |
値 |
| Designation |
C/2004 YJ35 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-03-03T03:36:26.084160Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:46Z |
| Obs used |
216 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2005-02-01.0000000 |
| e |
0.99986436 |
| q (au) |
1.781202 |
| a (au) |
13132.099127 |
| i (deg) |
52.476403 |
| Ω (om, deg) |
328.249684 |
| ω (w, deg) |
136.897955 |
| M (ma, deg) |
359.999980 |
等級
散乱 + 全体線形
$$
M_a = (17.126 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.126 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.800 |
| 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) |
| 2026-03-26 00:00 |
18:40:45.47 |
-70:11:17.8 |
HIP 91425 |
10.80 |
| 2026-03-26 12:00 |
18:40:46.49 |
-70:11:48.1 |
HIP 91425 |
10.76 |
| 2026-03-27 00:00 |
18:40:47.45 |
-70:12:18.5 |
HIP 91744 |
10.47 |
| 2026-03-27 12:00 |
18:40:48.33 |
-70:12:48.9 |
HIP 91744 |
10.13 |
| 2026-03-28 00:00 |
18:40:49.14 |
-70:13:19.4 |
HIP 91744 |
9.81 |
| 2026-03-28 12:00 |
18:40:49.87 |
-70:13:49.9 |
HIP 91744 |
9.51 |
| 2026-03-29 00:00 |
18:40:50.54 |
-70:14:20.4 |
HIP 91744 |
9.23 |
| 2026-03-29 12:00 |
18:40:51.13 |
-70:14:51.0 |
HIP 91744 |
8.99 |
| 2026-03-30 00:00 |
18:40:51.64 |
-70:15:21.5 |
HIP 91744 |
8.77 |
| 2026-03-30 12:00 |
18:40:52.09 |
-70:15:52.2 |
HIP 91744 |
8.58 |
| 2026-03-31 00:00 |
18:40:52.46 |
-70:16:22.8 |
HIP 91744 |
8.42 |
| 2026-03-31 12:00 |
18:40:52.76 |
-70:16:53.4 |
HIP 91744 |
8.30 |
| 2026-04-01 00:00 |
18:40:52.99 |
-70:17:24.1 |
HIP 91744 |
8.21 |
| 2026-04-01 12:00 |
18:40:53.14 |
-70:17:54.8 |
HIP 91744 |
8.17 |
| 2026-04-02 00:00 |
18:40:53.23 |
-70:18:25.5 |
HIP 91744 |
8.16 |
| 2026-04-02 12:00 |
18:40:53.23 |
-70:18:56.2 |
HIP 91744 |
8.19 |
| 2026-04-03 00:00 |
18:40:53.17 |
-70:19:26.9 |
HIP 91744 |
8.25 |
| 2026-04-03 12:00 |
18:40:53.03 |
-70:19:57.7 |
HIP 91744 |
8.36 |
| 2026-04-04 00:00 |
18:40:52.82 |
-70:20:28.4 |
HIP 91744 |
8.49 |
| 2026-04-04 12:00 |
18:40:52.53 |
-70:20:59.1 |
HIP 91744 |
8.67 |
| 2026-04-05 00:00 |
18:40:52.18 |
-70:21:29.9 |
HIP 91744 |
8.87 |
| 2026-04-05 12:00 |
18:40:51.74 |
-70:22:00.6 |
HIP 91744 |
9.11 |
| 2026-04-06 00:00 |
18:40:51.24 |
-70:22:31.3 |
HIP 91744 |
9.37 |
| 2026-04-06 12:00 |
18:40:50.66 |
-70:23:02.1 |
HIP 91744 |
9.66 |
| 2026-04-07 00:00 |
18:40:50.01 |
-70:23:32.8 |
HIP 91744 |
9.97 |
| 2026-04-07 12:00 |
18:40:49.28 |
-70:24:03.5 |
HIP 91744 |
10.30 |
| 2026-04-08 00:00 |
18:40:48.48 |
-70:24:34.2 |
HIP 91744 |
10.66 |
| 2026-04-08 12:00 |
18:40:47.61 |
-70:25:04.9 |
HIP 91744 |
11.03 |
| 2026-04-09 00:00 |
18:40:46.66 |
-70:25:35.5 |
HIP 91744 |
11.41 |
| 2026-04-09 12:00 |
18:40:45.64 |
-70:26:06.2 |
HIP 91744 |
11.81 |
| 2026-04-10 00:00 |
18:40:44.54 |
-70:26:36.8 |
HIP 91744 |
12.22 |
| 2026-04-10 12:00 |
18:40:43.37 |
-70:27:07.4 |
HIP 91744 |
12.65 |
| 2026-04-11 00:00 |
18:40:42.13 |
-70:27:37.9 |
HIP 91744 |
13.08 |
| 2026-04-11 12:00 |
18:40:40.82 |
-70:28:08.5 |
HIP 91744 |
13.53 |
| 2026-04-12 00:00 |
18:40:39.42 |
-70:28:39.0 |
HIP 91744 |
13.98 |
| 2026-04-12 12:00 |
18:40:37.96 |
-70:29:09.4 |
HIP 91744 |
14.45 |
| 2026-04-13 00:00 |
18:40:36.42 |
-70:29:39.9 |
HIP 91744 |
14.92 |
| 2026-04-13 12:00 |
18:40:34.81 |
-70:30:10.2 |
HIP 91317 |
15.07 |
| 2026-04-14 00:00 |
18:40:33.12 |
-70:30:40.6 |
HIP 91317 |
14.91 |
| 2026-04-14 12:00 |
18:40:31.36 |
-70:31:10.9 |
HIP 91317 |
14.77 |
| 2026-04-15 00:00 |
18:40:29.53 |
-70:31:41.1 |
HIP 91317 |
14.63 |
| 2026-04-15 12:00 |
18:40:27.62 |
-70:32:11.3 |
HIP 91317 |
14.50 |
| 2026-04-16 00:00 |
18:40:25.64 |
-70:32:41.5 |
HIP 91317 |
14.39 |