C/1997 N1 (Tabur)
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) |
| 2026-02-03 00:00 |
21:16:59.80 |
+10:47:48.4 |
HIP 105008 |
15.12 |
| 2026-02-03 12:00 |
21:17:02.01 |
+10:47:56.2 |
HIP 105008 |
15.52 |
| 2026-02-04 00:00 |
21:17:04.23 |
+10:48:04.2 |
HIP 105008 |
15.93 |
| 2026-02-04 12:00 |
21:17:06.44 |
+10:48:12.2 |
HIP 105008 |
16.34 |
| 2026-02-05 00:00 |
21:17:08.66 |
+10:48:20.5 |
HIP 105008 |
16.76 |
| 2026-02-05 12:00 |
21:17:10.87 |
+10:48:28.8 |
HIP 105008 |
17.19 |
| 2026-02-06 00:00 |
21:17:13.08 |
+10:48:37.3 |
HIP 105008 |
17.63 |
| 2026-02-06 12:00 |
21:17:15.30 |
+10:48:45.9 |
HIP 105008 |
18.07 |
| 2026-02-07 00:00 |
21:17:17.51 |
+10:48:54.6 |
HIP 105008 |
18.52 |
| 2026-02-07 12:00 |
21:17:19.73 |
+10:49:03.5 |
HIP 105008 |
18.97 |
| 2026-02-08 00:00 |
21:17:21.94 |
+10:49:12.5 |
HIP 105008 |
19.43 |
| 2026-02-08 12:00 |
21:17:24.15 |
+10:49:21.6 |
HIP 105008 |
19.89 |
| 2026-02-09 00:00 |
21:17:26.36 |
+10:49:30.9 |
HIP 105008 |
20.35 |
| 2026-02-09 12:00 |
21:17:28.57 |
+10:49:40.3 |
HIP 105008 |
20.82 |
| 2026-02-10 00:00 |
21:17:30.78 |
+10:49:49.8 |
HIP 105008 |
21.30 |
| 2026-02-10 12:00 |
21:17:32.99 |
+10:49:59.4 |
HIP 105008 |
21.77 |
| 2026-02-11 00:00 |
21:17:35.19 |
+10:50:09.2 |
HIP 105008 |
22.26 |
| 2026-02-11 12:00 |
21:17:37.40 |
+10:50:19.0 |
HIP 105008 |
22.74 |
| 2026-02-12 00:00 |
21:17:39.60 |
+10:50:29.0 |
HIP 105008 |
23.23 |
| 2026-02-12 12:00 |
21:17:41.80 |
+10:50:39.2 |
HIP 105008 |
23.71 |
| 2026-02-13 00:00 |
21:17:44.00 |
+10:50:49.4 |
HIP 105008 |
24.21 |
| 2026-02-13 12:00 |
21:17:46.19 |
+10:50:59.8 |
HIP 105008 |
24.70 |
| 2026-02-14 00:00 |
21:17:48.39 |
+10:51:10.3 |
HIP 105008 |
25.19 |
| 2026-02-14 12:00 |
21:17:50.58 |
+10:51:20.9 |
HIP 105008 |
25.69 |
| 2026-02-15 00:00 |
21:17:52.77 |
+10:51:31.6 |
HIP 105224 |
25.27 |
| 2026-02-15 12:00 |
21:17:54.95 |
+10:51:42.4 |
HIP 105224 |
24.82 |
| 2026-02-16 00:00 |
21:17:57.13 |
+10:51:53.4 |
HIP 105224 |
24.37 |
| 2026-02-16 12:00 |
21:17:59.31 |
+10:52:04.5 |
HIP 105224 |
23.92 |
| 2026-02-17 00:00 |
21:18:01.48 |
+10:52:15.7 |
HIP 105224 |
23.48 |
| 2026-02-17 12:00 |
21:18:03.65 |
+10:52:27.0 |
HIP 105224 |
23.04 |
| 2026-02-18 00:00 |
21:18:05.82 |
+10:52:38.4 |
HIP 105224 |
22.61 |
| 2026-02-18 12:00 |
21:18:07.98 |
+10:52:49.9 |
HIP 105224 |
22.18 |
| 2026-02-19 00:00 |
21:18:10.14 |
+10:53:01.6 |
HIP 105224 |
21.75 |
| 2026-02-19 12:00 |
21:18:12.30 |
+10:53:13.3 |
HIP 105224 |
21.33 |
| 2026-02-20 00:00 |
21:18:14.45 |
+10:53:25.2 |
HIP 105224 |
20.92 |
| 2026-02-20 12:00 |
21:18:16.59 |
+10:53:37.1 |
HIP 105224 |
20.51 |
| 2026-02-21 00:00 |
21:18:18.73 |
+10:53:49.2 |
HIP 105224 |
20.11 |
| 2026-02-21 12:00 |
21:18:20.87 |
+10:54:01.4 |
HIP 105224 |
19.72 |
| 2026-02-22 00:00 |
21:18:23.00 |
+10:54:13.7 |
HIP 105224 |
19.33 |
| 2026-02-22 12:00 |
21:18:25.12 |
+10:54:26.0 |
HIP 105224 |
18.95 |
| 2026-02-23 00:00 |
21:18:27.24 |
+10:54:38.5 |
HIP 105224 |
18.58 |
| 2026-02-23 12:00 |
21:18:29.36 |
+10:54:51.1 |
HIP 105224 |
18.22 |
| 2026-02-24 00:00 |
21:18:31.46 |
+10:55:03.8 |
HIP 105224 |
17.86 |