メタデータ
| 項目 |
値 |
| Designation |
62P/Tsuchinshan 1 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-11-16T02:53:15.889920Z |
| Orbit solution date (soln_date, UTC) |
2025-03-14T14:47:38Z |
| Obs used |
3392 |
| NEO |
- |
| M1 |
13.300 |
| K1 |
14.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-10-28.0000000 |
| e |
0.59747574 |
| q (au) |
1.383805 |
| a (au) |
3.437817 |
| i (deg) |
9.707775 |
| Ω (om, deg) |
90.244520 |
| ω (w, deg) |
30.348693 |
| M (ma, deg) |
357.043519 |
等級
散乱 + 全体線形
$$
M_a = (12.302 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.302 |
| n |
6.000 |
| gf |
0.998 |
| gb |
-0.666 |
| k |
0.993 |
| 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 |
| 2023-08-29 |
2024-06-04 |
+4.3693 |
-2.091 |
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) |
| 2026-06-01 00:00 |
19:35:24.89 |
-24:55:43.3 |
HIP 96333 |
12.77 |
| 2026-06-01 12:00 |
19:35:11.38 |
-24:56:34.4 |
HIP 96333 |
11.45 |
| 2026-06-02 00:00 |
19:34:57.69 |
-24:57:25.7 |
HIP 96333 |
10.93 |
| 2026-06-02 12:00 |
19:34:43.81 |
-24:58:17.2 |
HIP 96333 |
11.36 |
| 2026-06-03 00:00 |
19:34:29.75 |
-24:59:08.9 |
HIP 96333 |
12.67 |
| 2026-06-03 12:00 |
19:34:15.50 |
-25:00:00.9 |
HIP 96333 |
14.65 |
| 2026-06-04 00:00 |
19:34:01.07 |
-25:00:53.0 |
HIP 96333 |
17.09 |
| 2026-06-04 12:00 |
19:33:46.46 |
-25:01:45.3 |
HIP 96333 |
19.86 |
| 2026-06-05 00:00 |
19:33:31.67 |
-25:02:37.8 |
HIP 96333 |
22.83 |
| 2026-06-05 12:00 |
19:33:16.71 |
-25:03:30.5 |
HIP 96333 |
25.97 |
| 2026-06-06 00:00 |
19:33:01.56 |
-25:04:23.3 |
HIP 96082 |
26.85 |
| 2026-06-06 12:00 |
19:32:46.24 |
-25:05:16.3 |
HIP 96082 |
24.58 |
| 2026-06-07 00:00 |
19:32:30.75 |
-25:06:09.5 |
HIP 96082 |
22.64 |
| 2026-06-07 12:00 |
19:32:15.08 |
-25:07:02.7 |
HIP 96082 |
21.15 |
| 2026-06-08 00:00 |
19:31:59.25 |
-25:07:56.1 |
HIP 96082 |
20.20 |
| 2026-06-08 12:00 |
19:31:43.25 |
-25:08:49.7 |
HIP 96082 |
19.92 |
| 2026-06-09 00:00 |
19:31:27.08 |
-25:09:43.3 |
HIP 96082 |
20.34 |
| 2026-06-09 12:00 |
19:31:10.74 |
-25:10:37.0 |
HIP 96082 |
21.44 |
| 2026-06-10 00:00 |
19:30:54.24 |
-25:11:30.8 |
HIP 95971 |
20.55 |
| 2026-06-10 12:00 |
19:30:37.58 |
-25:12:24.7 |
HIP 95971 |
20.15 |
| 2026-06-11 00:00 |
19:30:20.76 |
-25:13:18.7 |
HIP 95971 |
20.50 |
| 2026-06-11 12:00 |
19:30:03.79 |
-25:14:12.7 |
HIP 95807 |
17.64 |
| 2026-06-12 00:00 |
19:29:46.66 |
-25:15:06.8 |
HIP 95807 |
14.75 |
| 2026-06-12 12:00 |
19:29:29.37 |
-25:16:00.9 |
HIP 95807 |
12.45 |
| 2026-06-13 00:00 |
19:29:11.94 |
-25:16:55.1 |
HIP 95807 |
11.17 |
| 2026-06-13 12:00 |
19:28:54.35 |
-25:17:49.2 |
HIP 95807 |
11.29 |
| 2026-06-14 00:00 |
19:28:36.62 |
-25:18:43.4 |
HIP 95807 |
12.80 |
| 2026-06-14 12:00 |
19:28:18.75 |
-25:19:37.6 |
HIP 95807 |
15.32 |
| 2026-06-15 00:00 |
19:28:00.73 |
-25:20:31.8 |
HIP 95807 |
18.46 |
| 2026-06-15 12:00 |
19:27:42.58 |
-25:21:25.9 |
HIP 95606 |
18.88 |
| 2026-06-16 00:00 |
19:27:24.29 |
-25:22:20.1 |
HIP 95606 |
15.55 |
| 2026-06-16 12:00 |
19:27:05.86 |
-25:23:14.1 |
HIP 95606 |
12.74 |
| 2026-06-17 00:00 |
19:26:47.31 |
-25:24:08.2 |
HIP 95606 |
10.91 |
| 2026-06-17 12:00 |
19:26:28.62 |
-25:25:02.1 |
HIP 95606 |
10.62 |
| 2026-06-18 00:00 |
19:26:09.81 |
-25:25:56.0 |
HIP 95606 |
12.00 |
| 2026-06-18 12:00 |
19:25:50.88 |
-25:26:49.8 |
HIP 95606 |
14.62 |
| 2026-06-19 00:00 |
19:25:31.82 |
-25:27:43.6 |
HIP 95606 |
17.95 |
| 2026-06-19 12:00 |
19:25:12.65 |
-25:28:37.2 |
HIP 95606 |
21.69 |
| 2026-06-20 00:00 |
19:24:53.36 |
-25:29:30.7 |
HIP 95461 |
21.78 |
| 2026-06-20 12:00 |
19:24:33.96 |
-25:30:24.1 |
HIP 95288 |
19.12 |
| 2026-06-21 00:00 |
19:24:14.46 |
-25:31:17.3 |
HIP 95288 |
14.90 |
| 2026-06-21 12:00 |
19:23:54.84 |
-25:32:10.4 |
HIP 95288 |
10.89 |
| 2026-06-22 00:00 |
19:23:35.12 |
-25:33:03.4 |
HIP 95288 |
7.45 |