メタデータ
| 項目 |
値 |
| Designation |
C/2000 CT54 (LINEAR) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2001-06-19T10:43:56.498880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:04Z |
| Obs used |
216 |
| NEO |
- |
| M1 |
7.400 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2002-05-15.0000000 |
| e |
0.99835347 |
| q (au) |
3.155967 |
| a (au) |
1916.742283 |
| i (deg) |
49.212506 |
| Ω (om, deg) |
18.956792 |
| ω (w, deg) |
272.644443 |
| M (ma, deg) |
0.003871 |
等級
散乱 + 全体線形
$$
M_a = (6.408 + 3.965\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
6.408 |
| n |
3.965 |
| gf |
1.000 |
| gb |
-0.824 |
| k |
0.998 |
| 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) |
| 2026-09-20 00:00 |
03:53:22.39 |
+63:41:47.2 |
HIP 18172 |
12.83 |
| 2026-09-20 12:00 |
03:53:19.95 |
+63:42:09.8 |
HIP 18172 |
13.18 |
| 2026-09-21 00:00 |
03:53:17.47 |
+63:42:32.2 |
HIP 18172 |
13.54 |
| 2026-09-21 12:00 |
03:53:14.95 |
+63:42:54.5 |
HIP 18172 |
13.91 |
| 2026-09-22 00:00 |
03:53:12.38 |
+63:43:16.7 |
HIP 18172 |
14.27 |
| 2026-09-22 12:00 |
03:53:09.77 |
+63:43:38.7 |
HIP 18172 |
14.64 |
| 2026-09-23 00:00 |
03:53:07.11 |
+63:44:00.6 |
HIP 18172 |
15.01 |
| 2026-09-23 12:00 |
03:53:04.41 |
+63:44:22.3 |
HIP 18172 |
15.39 |
| 2026-09-24 00:00 |
03:53:01.66 |
+63:44:43.8 |
HIP 18172 |
15.77 |
| 2026-09-24 12:00 |
03:52:58.87 |
+63:45:05.2 |
HIP 18172 |
16.15 |
| 2026-09-25 00:00 |
03:52:56.03 |
+63:45:26.4 |
HIP 18172 |
16.53 |
| 2026-09-25 12:00 |
03:52:53.15 |
+63:45:47.4 |
HIP 18172 |
16.92 |
| 2026-09-26 00:00 |
03:52:50.23 |
+63:46:08.3 |
HIP 18172 |
17.31 |
| 2026-09-26 12:00 |
03:52:47.26 |
+63:46:29.0 |
HIP 18172 |
17.70 |
| 2026-09-27 00:00 |
03:52:44.25 |
+63:46:49.6 |
HIP 18172 |
18.09 |
| 2026-09-27 12:00 |
03:52:41.20 |
+63:47:10.0 |
HIP 18172 |
18.49 |
| 2026-09-28 00:00 |
03:52:38.10 |
+63:47:30.2 |
HIP 18172 |
18.89 |
| 2026-09-28 12:00 |
03:52:34.96 |
+63:47:50.2 |
HIP 18172 |
19.29 |
| 2026-09-29 00:00 |
03:52:31.78 |
+63:48:10.1 |
HIP 18172 |
19.69 |
| 2026-09-29 12:00 |
03:52:28.56 |
+63:48:29.8 |
HIP 18172 |
20.09 |
| 2026-09-30 00:00 |
03:52:25.29 |
+63:48:49.3 |
HIP 18172 |
20.49 |
| 2026-09-30 12:00 |
03:52:21.98 |
+63:49:08.6 |
HIP 18172 |
20.90 |
| 2026-10-01 00:00 |
03:52:18.63 |
+63:49:27.8 |
HIP 18172 |
21.31 |
| 2026-10-01 12:00 |
03:52:15.24 |
+63:49:46.8 |
HIP 18172 |
21.72 |
| 2026-10-02 00:00 |
03:52:11.81 |
+63:50:05.6 |
HIP 18172 |
22.13 |
| 2026-10-02 12:00 |
03:52:08.33 |
+63:50:24.2 |
HIP 18172 |
22.55 |
| 2026-10-03 00:00 |
03:52:04.82 |
+63:50:42.6 |
HIP 18172 |
22.96 |
| 2026-10-03 12:00 |
03:52:01.26 |
+63:51:00.8 |
HIP 18172 |
23.38 |
| 2026-10-04 00:00 |
03:51:57.66 |
+63:51:18.8 |
HIP 18172 |
23.80 |
| 2026-10-04 12:00 |
03:51:54.03 |
+63:51:36.7 |
HIP 18172 |
24.22 |
| 2026-10-05 00:00 |
03:51:50.35 |
+63:51:54.3 |
HIP 18172 |
24.64 |
| 2026-10-05 12:00 |
03:51:46.63 |
+63:52:11.8 |
HIP 18172 |
25.07 |
| 2026-10-06 00:00 |
03:51:42.88 |
+63:52:29.0 |
HIP 18172 |
25.49 |
| 2026-10-06 12:00 |
03:51:39.08 |
+63:52:46.1 |
HIP 18172 |
25.92 |
| 2026-10-07 00:00 |
03:51:35.25 |
+63:53:03.0 |
HIP 18172 |
26.35 |
| 2026-10-07 12:00 |
03:51:31.37 |
+63:53:19.6 |
HIP 17972 |
26.76 |
| 2026-10-08 00:00 |
03:51:27.46 |
+63:53:36.1 |
HIP 17972 |
26.93 |
| 2026-10-08 12:00 |
03:51:23.51 |
+63:53:52.3 |
HIP 17972 |
27.10 |
| 2026-10-09 00:00 |
03:51:19.52 |
+63:54:08.3 |
HIP 17972 |
27.27 |
| 2026-10-09 12:00 |
03:51:15.50 |
+63:54:24.2 |
HIP 17972 |
27.45 |
| 2026-10-10 00:00 |
03:51:11.43 |
+63:54:39.8 |
HIP 17972 |
27.64 |
| 2026-10-10 12:00 |
03:51:07.33 |
+63:54:55.2 |
HIP 17972 |
27.83 |
| 2026-10-11 00:00 |
03:51:03.20 |
+63:55:10.4 |
HIP 17972 |
28.02 |