メタデータ
| 項目 |
値 |
| Designation |
C/2026 C1 (Tsuchinshan) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2028-11-07T00:02:20.797440Z |
| Orbit solution date (soln_date, UTC) |
2026-06-05T03:03:24Z |
| Obs used |
760 |
| NEO |
- |
| M1 |
6.300 |
| K1 |
7.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2026-02-11T19:49:29.596800Z |
| Discovery magnitude (MPC) |
19.30 R |
| Discovery observatory (MPC) |
D29 · Purple Mountain Observatory, XuYi Station |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2026-03-25.0000000 |
| e |
0.99989758 |
| q (au) |
1.152484 |
| a (au) |
11251.991601 |
| i (deg) |
99.596712 |
| Ω (om, deg) |
3.618762 |
| ω (w, deg) |
310.719614 |
| M (ma, deg) |
359.999209 |
等級
散乱 + 全体線形
$$
M_a = (-1.437 + 5.999\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
-1.437 |
| n |
5.999 |
| gf |
0.816 |
| gb |
-0.975 |
| k |
1.000 |
| δ90 |
3.289 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
12:08:32.36 |
+07:45:50.4 |
HIP 59289 |
30.91 |
| 2026-06-01 12:00 |
12:08:25.92 |
+07:45:28.4 |
HIP 59057 |
30.60 |
| 2026-06-02 00:00 |
12:08:19.57 |
+07:45:05.7 |
HIP 59057 |
29.06 |
| 2026-06-02 12:00 |
12:08:13.33 |
+07:44:42.3 |
HIP 59057 |
27.54 |
| 2026-06-03 00:00 |
12:08:07.19 |
+07:44:18.2 |
HIP 59057 |
26.04 |
| 2026-06-03 12:00 |
12:08:01.16 |
+07:43:53.4 |
HIP 59057 |
24.57 |
| 2026-06-04 00:00 |
12:07:55.22 |
+07:43:28.0 |
HIP 59057 |
23.13 |
| 2026-06-04 12:00 |
12:07:49.39 |
+07:43:01.9 |
HIP 59057 |
21.70 |
| 2026-06-05 00:00 |
12:07:43.67 |
+07:42:35.0 |
HIP 59057 |
20.31 |
| 2026-06-05 12:00 |
12:07:38.05 |
+07:42:07.6 |
HIP 59057 |
18.94 |
| 2026-06-06 00:00 |
12:07:32.53 |
+07:41:39.4 |
HIP 59057 |
17.60 |
| 2026-06-06 12:00 |
12:07:27.11 |
+07:41:10.5 |
HIP 59057 |
16.29 |
| 2026-06-07 00:00 |
12:07:21.80 |
+07:40:41.0 |
HIP 59057 |
15.00 |
| 2026-06-07 12:00 |
12:07:16.60 |
+07:40:10.8 |
HIP 59057 |
13.75 |
| 2026-06-08 00:00 |
12:07:11.50 |
+07:39:40.0 |
HIP 59057 |
12.54 |
| 2026-06-08 12:00 |
12:07:06.50 |
+07:39:08.4 |
HIP 59057 |
11.37 |
| 2026-06-09 00:00 |
12:07:01.61 |
+07:38:36.2 |
HIP 59057 |
10.24 |
| 2026-06-09 12:00 |
12:06:56.82 |
+07:38:03.4 |
HIP 59057 |
9.17 |
| 2026-06-10 00:00 |
12:06:52.14 |
+07:37:29.8 |
HIP 59057 |
8.17 |
| 2026-06-10 12:00 |
12:06:47.57 |
+07:36:55.6 |
HIP 59057 |
7.25 |
| 2026-06-11 00:00 |
12:06:43.10 |
+07:36:20.8 |
HIP 59057 |
6.45 |
| 2026-06-11 12:00 |
12:06:38.73 |
+07:35:45.3 |
HIP 59057 |
5.80 |
| 2026-06-12 00:00 |
12:06:34.47 |
+07:35:09.1 |
HIP 59057 |
5.34 |
| 2026-06-12 12:00 |
12:06:30.32 |
+07:34:32.2 |
HIP 59057 |
5.12 |
| 2026-06-13 00:00 |
12:06:26.27 |
+07:33:54.8 |
HIP 59057 |
5.14 |
| 2026-06-13 12:00 |
12:06:22.32 |
+07:33:16.6 |
HIP 59057 |
5.40 |
| 2026-06-14 00:00 |
12:06:18.49 |
+07:32:37.8 |
HIP 59057 |
5.85 |
| 2026-06-14 12:00 |
12:06:14.76 |
+07:31:58.4 |
HIP 59057 |
6.45 |
| 2026-06-15 00:00 |
12:06:11.13 |
+07:31:18.3 |
HIP 59057 |
7.16 |
| 2026-06-15 12:00 |
12:06:07.61 |
+07:30:37.5 |
HIP 59057 |
7.93 |
| 2026-06-16 00:00 |
12:06:04.19 |
+07:29:56.2 |
HIP 59057 |
8.75 |
| 2026-06-16 12:00 |
12:06:00.89 |
+07:29:14.1 |
HIP 59057 |
9.59 |
| 2026-06-17 00:00 |
12:05:57.68 |
+07:28:31.5 |
HIP 59057 |
10.46 |
| 2026-06-17 12:00 |
12:05:54.58 |
+07:27:48.2 |
HIP 59057 |
11.34 |
| 2026-06-18 00:00 |
12:05:51.59 |
+07:27:04.3 |
HIP 59057 |
12.22 |
| 2026-06-18 12:00 |
12:05:48.70 |
+07:26:19.8 |
HIP 59057 |
13.10 |
| 2026-06-19 00:00 |
12:05:45.92 |
+07:25:34.6 |
HIP 59057 |
13.98 |
| 2026-06-19 12:00 |
12:05:43.24 |
+07:24:48.8 |
HIP 59057 |
14.86 |
| 2026-06-20 00:00 |
12:05:40.67 |
+07:24:02.4 |
HIP 59057 |
15.73 |
| 2026-06-20 12:00 |
12:05:38.20 |
+07:23:15.4 |
HIP 59057 |
16.60 |
| 2026-06-21 00:00 |
12:05:35.84 |
+07:22:27.8 |
HIP 59057 |
17.47 |
| 2026-06-21 12:00 |
12:05:33.58 |
+07:21:39.6 |
HIP 59057 |
18.32 |
| 2026-06-22 00:00 |
12:05:31.42 |
+07:20:50.8 |
HIP 58864 |
18.36 |