60P/Tsuchinshan 2
メタデータ
| 項目 |
値 |
| Designation |
60P/Tsuchinshan 2 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-12-11T05:33:44.340480Z |
| Orbit solution date (soln_date, UTC) |
2025-02-28T14:18:31Z |
| Obs used |
1247 |
| NEO |
- |
| M1 |
9.600 |
| K1 |
23.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-10-02.0000000 |
| e |
0.53777177 |
| q (au) |
1.622648 |
| a (au) |
3.510492 |
| i (deg) |
3.606471 |
| Ω (om, deg) |
267.581419 |
| ω (w, deg) |
216.554593 |
| M (ma, deg) |
349.475881 |
等級
散乱 + 全体線形
$$
M_a = (19.813 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.813 |
| n |
2.000 |
| gf |
0.997 |
| 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) |
| 2026-02-03 00:00 |
15:21:40.44 |
-21:38:27.2 |
HIP 74965 |
35.54 |
| 2026-02-03 12:00 |
15:22:13.34 |
-21:40:41.6 |
HIP 75159 |
40.94 |
| 2026-02-04 00:00 |
15:22:45.94 |
-21:42:54.6 |
HIP 75462 |
36.35 |
| 2026-02-04 12:00 |
15:23:18.24 |
-21:45:06.1 |
HIP 75462 |
28.94 |
| 2026-02-05 00:00 |
15:23:50.24 |
-21:47:16.2 |
HIP 75462 |
21.90 |
| 2026-02-05 12:00 |
15:24:21.92 |
-21:49:24.8 |
HIP 75504 |
15.44 |
| 2026-02-06 00:00 |
15:24:53.30 |
-21:51:31.9 |
HIP 75504 |
8.00 |
| 2026-02-06 12:00 |
15:25:24.36 |
-21:53:37.7 |
HIP 75504 |
2.16 |
| 2026-02-07 00:00 |
15:25:55.11 |
-21:55:41.9 |
HIP 75504 |
7.54 |
| 2026-02-07 12:00 |
15:26:25.55 |
-21:57:44.7 |
HIP 75504 |
14.73 |
| 2026-02-08 00:00 |
15:26:55.66 |
-21:59:46.1 |
HIP 75504 |
21.95 |
| 2026-02-08 12:00 |
15:27:25.46 |
-22:01:46.0 |
HIP 75755 |
20.20 |
| 2026-02-09 00:00 |
15:27:54.93 |
-22:03:44.5 |
HIP 75755 |
17.25 |
| 2026-02-09 12:00 |
15:28:24.07 |
-22:05:41.5 |
HIP 75755 |
16.97 |
| 2026-02-10 00:00 |
15:28:52.89 |
-22:07:37.1 |
HIP 75755 |
19.38 |
| 2026-02-10 12:00 |
15:29:21.38 |
-22:09:31.3 |
HIP 75951 |
19.54 |
| 2026-02-11 00:00 |
15:29:49.53 |
-22:11:24.0 |
HIP 75951 |
12.93 |
| 2026-02-11 12:00 |
15:30:17.35 |
-22:13:15.3 |
HIP 75951 |
6.74 |
| 2026-02-12 00:00 |
15:30:44.83 |
-22:15:05.1 |
HIP 75951 |
3.67 |
| 2026-02-12 12:00 |
15:31:11.97 |
-22:16:53.5 |
HIP 75951 |
8.24 |
| 2026-02-13 00:00 |
15:31:38.77 |
-22:18:40.5 |
HIP 75951 |
14.33 |
| 2026-02-13 12:00 |
15:32:05.22 |
-22:20:26.1 |
HIP 75951 |
20.56 |
| 2026-02-14 00:00 |
15:32:31.33 |
-22:22:10.2 |
HIP 76071 |
24.65 |
| 2026-02-14 12:00 |
15:32:57.09 |
-22:23:52.9 |
HIP 76071 |
28.05 |
| 2026-02-15 00:00 |
15:33:22.49 |
-22:25:34.1 |
HIP 76268 |
27.66 |
| 2026-02-15 12:00 |
15:33:47.54 |
-22:27:13.9 |
HIP 76268 |
22.80 |
| 2026-02-16 00:00 |
15:34:12.24 |
-22:28:52.3 |
HIP 76268 |
18.70 |
| 2026-02-16 12:00 |
15:34:36.58 |
-22:30:29.3 |
HIP 76268 |
15.83 |
| 2026-02-17 00:00 |
15:35:00.56 |
-22:32:04.9 |
HIP 76268 |
14.83 |
| 2026-02-17 12:00 |
15:35:24.17 |
-22:33:39.0 |
HIP 76268 |
15.95 |
| 2026-02-18 00:00 |
15:35:47.42 |
-22:35:11.7 |
HIP 76268 |
18.73 |
| 2026-02-18 12:00 |
15:36:10.30 |
-22:36:43.0 |
HIP 76268 |
22.51 |
| 2026-02-19 00:00 |
15:36:32.82 |
-22:38:12.8 |
HIP 76268 |
26.81 |
| 2026-02-19 12:00 |
15:36:54.96 |
-22:39:41.3 |
HIP 76532 |
31.29 |
| 2026-02-20 00:00 |
15:37:16.73 |
-22:41:08.3 |
HIP 76636 |
27.31 |
| 2026-02-20 12:00 |
15:37:38.12 |
-22:42:33.9 |
HIP 76636 |
23.87 |
| 2026-02-21 00:00 |
15:37:59.14 |
-22:43:58.1 |
HIP 76636 |
21.18 |
| 2026-02-21 12:00 |
15:38:19.78 |
-22:45:20.8 |
HIP 76614 |
18.52 |
| 2026-02-22 00:00 |
15:38:40.04 |
-22:46:42.2 |
HIP 76614 |
16.30 |
| 2026-02-22 12:00 |
15:38:59.91 |
-22:48:02.2 |
HIP 76614 |
15.34 |
| 2026-02-23 00:00 |
15:39:19.40 |
-22:49:20.7 |
HIP 76614 |
15.81 |
| 2026-02-23 12:00 |
15:39:38.51 |
-22:50:37.8 |
HIP 76614 |
17.50 |
| 2026-02-24 00:00 |
15:39:57.23 |
-22:51:53.5 |
HIP 76666 |
19.00 |