メタデータ
| 項目 |
値 |
| Designation |
C/1997 N1 (Tabur) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1997-08-15T11:29:17.433600Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:51Z |
| Obs used |
65 |
| NEO |
- |
| M1 |
12.100 |
| K1 |
6.250 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1997-07-13.0000000 |
| e |
1.00016168 |
| q (au) |
0.395723 |
| a (au) |
-2447.496553 |
| i (deg) |
85.962975 |
| Ω (om, deg) |
147.610977 |
| ω (w, deg) |
344.181841 |
| M (ma, deg) |
-0.000273 |
等級
散乱 + 全体線形
$$
M_a = (10.434 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
10.434 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.920 |
| δ90 |
1.000 |
| 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) |
| 2026-06-01 00:00 |
21:21:15.53 |
+11:44:08.0 |
HIP 105365 |
13.67 |
| 2026-06-01 12:00 |
21:21:14.73 |
+11:44:18.2 |
HIP 105365 |
13.61 |
| 2026-06-02 00:00 |
21:21:13.90 |
+11:44:28.3 |
HIP 105365 |
13.56 |
| 2026-06-02 12:00 |
21:21:13.06 |
+11:44:38.2 |
HIP 105365 |
13.50 |
| 2026-06-03 00:00 |
21:21:12.21 |
+11:44:48.1 |
HIP 105365 |
13.45 |
| 2026-06-03 12:00 |
21:21:11.33 |
+11:44:57.8 |
HIP 105365 |
13.40 |
| 2026-06-04 00:00 |
21:21:10.44 |
+11:45:07.4 |
HIP 105365 |
13.34 |
| 2026-06-04 12:00 |
21:21:09.53 |
+11:45:16.8 |
HIP 105365 |
13.29 |
| 2026-06-05 00:00 |
21:21:08.61 |
+11:45:26.2 |
HIP 105365 |
13.24 |
| 2026-06-05 12:00 |
21:21:07.66 |
+11:45:35.4 |
HIP 105365 |
13.19 |
| 2026-06-06 00:00 |
21:21:06.70 |
+11:45:44.5 |
HIP 105365 |
13.14 |
| 2026-06-06 12:00 |
21:21:05.73 |
+11:45:53.5 |
HIP 105365 |
13.09 |
| 2026-06-07 00:00 |
21:21:04.74 |
+11:46:02.3 |
HIP 105365 |
13.05 |
| 2026-06-07 12:00 |
21:21:03.73 |
+11:46:11.1 |
HIP 105365 |
13.01 |
| 2026-06-08 00:00 |
21:21:02.70 |
+11:46:19.7 |
HIP 105365 |
12.97 |
| 2026-06-08 12:00 |
21:21:01.66 |
+11:46:28.1 |
HIP 105365 |
12.93 |
| 2026-06-09 00:00 |
21:21:00.61 |
+11:46:36.5 |
HIP 105365 |
12.89 |
| 2026-06-09 12:00 |
21:20:59.53 |
+11:46:44.7 |
HIP 105365 |
12.86 |
| 2026-06-10 00:00 |
21:20:58.44 |
+11:46:52.7 |
HIP 105365 |
12.83 |
| 2026-06-10 12:00 |
21:20:57.34 |
+11:47:00.7 |
HIP 105365 |
12.80 |
| 2026-06-11 00:00 |
21:20:56.21 |
+11:47:08.5 |
HIP 105365 |
12.77 |
| 2026-06-11 12:00 |
21:20:55.08 |
+11:47:16.2 |
HIP 105365 |
12.75 |
| 2026-06-12 00:00 |
21:20:53.92 |
+11:47:23.7 |
HIP 105365 |
12.73 |
| 2026-06-12 12:00 |
21:20:52.75 |
+11:47:31.1 |
HIP 105365 |
12.72 |
| 2026-06-13 00:00 |
21:20:51.57 |
+11:47:38.4 |
HIP 105365 |
12.71 |
| 2026-06-13 12:00 |
21:20:50.37 |
+11:47:45.5 |
HIP 105365 |
12.70 |
| 2026-06-14 00:00 |
21:20:49.15 |
+11:47:52.5 |
HIP 105365 |
12.70 |
| 2026-06-14 12:00 |
21:20:47.92 |
+11:47:59.4 |
HIP 105365 |
12.71 |
| 2026-06-15 00:00 |
21:20:46.67 |
+11:48:06.1 |
HIP 105365 |
12.71 |
| 2026-06-15 12:00 |
21:20:45.41 |
+11:48:12.7 |
HIP 105365 |
12.73 |
| 2026-06-16 00:00 |
21:20:44.13 |
+11:48:19.2 |
HIP 105365 |
12.74 |
| 2026-06-16 12:00 |
21:20:42.83 |
+11:48:25.5 |
HIP 105365 |
12.77 |
| 2026-06-17 00:00 |
21:20:41.53 |
+11:48:31.6 |
HIP 105365 |
12.80 |
| 2026-06-17 12:00 |
21:20:40.20 |
+11:48:37.7 |
HIP 105365 |
12.83 |
| 2026-06-18 00:00 |
21:20:38.86 |
+11:48:43.5 |
HIP 105365 |
12.87 |
| 2026-06-18 12:00 |
21:20:37.51 |
+11:48:49.3 |
HIP 105365 |
12.92 |
| 2026-06-19 00:00 |
21:20:36.15 |
+11:48:54.9 |
HIP 105365 |
12.97 |
| 2026-06-19 12:00 |
21:20:34.76 |
+11:49:00.3 |
HIP 105365 |
13.03 |
| 2026-06-20 00:00 |
21:20:33.37 |
+11:49:05.6 |
HIP 105365 |
13.10 |
| 2026-06-20 12:00 |
21:20:31.96 |
+11:49:10.8 |
HIP 105365 |
13.17 |
| 2026-06-21 00:00 |
21:20:30.53 |
+11:49:15.8 |
HIP 105365 |
13.25 |
| 2026-06-21 12:00 |
21:20:29.09 |
+11:49:20.7 |
HIP 105365 |
13.34 |
| 2026-06-22 00:00 |
21:20:27.64 |
+11:49:25.4 |
HIP 105365 |
13.43 |