メタデータ
| 項目 |
値 |
| Designation |
C/1996 Q1 (Tabur) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1996-11-03T12:46:28.758720Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:49Z |
| Obs used |
214 |
| NEO |
- |
| M1 |
11.000 |
| K1 |
10.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1996-09-15.0000000 |
| e |
0.99861194 |
| q (au) |
0.839803 |
| a (au) |
605.019223 |
| i (deg) |
73.355632 |
| Ω (om, deg) |
31.399626 |
| ω (w, deg) |
57.412892 |
| M (ma, deg) |
359.996720 |
等級
散乱 + 全体線形
$$
M_a = (7.550 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.550 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
1.000 |
| 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
残差 (区間線形)
$$\epsilon = a \log_{10} r_{\mathrm{au}} + b$$
| 開始日 (UTC) |
終了日 (UTC) |
a |
b |
| 1996-08-21 |
1996-09-14 |
+20.1110 |
-2.149 |
| 1996-09-14 |
1996-10-11 |
-2.1380 |
-0.247 |
| 1996-10-11 |
1996-11-03 |
-32.9959 |
-1.069 |
| 1996-11-03 |
1997-10-05 |
-3.4416 |
+1.689 |
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) |
| 2026-05-12 00:00 |
13:36:44.09 |
-55:35:21.0 |
HIP 66366 |
20.39 |
| 2026-05-12 12:00 |
13:36:40.68 |
-55:35:03.9 |
HIP 66366 |
20.01 |
| 2026-05-13 00:00 |
13:36:37.28 |
-55:34:46.6 |
HIP 66366 |
19.64 |
| 2026-05-13 12:00 |
13:36:33.90 |
-55:34:29.2 |
HIP 66366 |
19.27 |
| 2026-05-14 00:00 |
13:36:30.53 |
-55:34:11.6 |
HIP 66366 |
18.91 |
| 2026-05-14 12:00 |
13:36:27.18 |
-55:33:53.8 |
HIP 66366 |
18.56 |
| 2026-05-15 00:00 |
13:36:23.84 |
-55:33:35.9 |
HIP 66366 |
18.21 |
| 2026-05-15 12:00 |
13:36:20.52 |
-55:33:17.9 |
HIP 66366 |
17.88 |
| 2026-05-16 00:00 |
13:36:17.22 |
-55:32:59.7 |
HIP 66366 |
17.55 |
| 2026-05-16 12:00 |
13:36:13.93 |
-55:32:41.3 |
HIP 66366 |
17.23 |
| 2026-05-17 00:00 |
13:36:10.66 |
-55:32:22.8 |
HIP 66366 |
16.93 |
| 2026-05-17 12:00 |
13:36:07.41 |
-55:32:04.2 |
HIP 66366 |
16.63 |
| 2026-05-18 00:00 |
13:36:04.17 |
-55:31:45.4 |
HIP 66366 |
16.34 |
| 2026-05-18 12:00 |
13:36:00.95 |
-55:31:26.5 |
HIP 66366 |
16.07 |
| 2026-05-19 00:00 |
13:35:57.75 |
-55:31:07.4 |
HIP 66366 |
15.81 |
| 2026-05-19 12:00 |
13:35:54.57 |
-55:30:48.2 |
HIP 66366 |
15.56 |
| 2026-05-20 00:00 |
13:35:51.41 |
-55:30:28.9 |
HIP 66366 |
15.32 |
| 2026-05-20 12:00 |
13:35:48.26 |
-55:30:09.4 |
HIP 66366 |
15.10 |
| 2026-05-21 00:00 |
13:35:45.13 |
-55:29:49.7 |
HIP 66366 |
14.89 |
| 2026-05-21 12:00 |
13:35:42.03 |
-55:29:30.0 |
HIP 66366 |
14.70 |
| 2026-05-22 00:00 |
13:35:38.94 |
-55:29:10.1 |
HIP 66366 |
14.52 |
| 2026-05-22 12:00 |
13:35:35.87 |
-55:28:50.1 |
HIP 66366 |
14.36 |
| 2026-05-23 00:00 |
13:35:32.82 |
-55:28:30.0 |
HIP 66366 |
14.21 |
| 2026-05-23 12:00 |
13:35:29.79 |
-55:28:09.7 |
HIP 66366 |
14.08 |
| 2026-05-24 00:00 |
13:35:26.78 |
-55:27:49.3 |
HIP 66366 |
13.97 |
| 2026-05-24 12:00 |
13:35:23.79 |
-55:27:28.8 |
HIP 66366 |
13.88 |
| 2026-05-25 00:00 |
13:35:20.82 |
-55:27:08.2 |
HIP 66366 |
13.80 |
| 2026-05-25 12:00 |
13:35:17.87 |
-55:26:47.4 |
HIP 66366 |
13.74 |
| 2026-05-26 00:00 |
13:35:14.94 |
-55:26:26.6 |
HIP 66366 |
13.70 |
| 2026-05-26 12:00 |
13:35:12.04 |
-55:26:05.6 |
HIP 66366 |
13.68 |
| 2026-05-27 00:00 |
13:35:09.15 |
-55:25:44.5 |
HIP 66366 |
13.68 |
| 2026-05-27 12:00 |
13:35:06.29 |
-55:25:23.3 |
HIP 66366 |
13.69 |
| 2026-05-28 00:00 |
13:35:03.44 |
-55:25:02.0 |
HIP 66366 |
13.72 |
| 2026-05-28 12:00 |
13:35:00.62 |
-55:24:40.6 |
HIP 66366 |
13.77 |
| 2026-05-29 00:00 |
13:34:57.83 |
-55:24:19.1 |
HIP 66366 |
13.84 |
| 2026-05-29 12:00 |
13:34:55.05 |
-55:23:57.5 |
HIP 66366 |
13.92 |
| 2026-05-30 00:00 |
13:34:52.29 |
-55:23:35.7 |
HIP 66366 |
14.02 |
| 2026-05-30 12:00 |
13:34:49.56 |
-55:23:13.9 |
HIP 66366 |
14.14 |
| 2026-05-31 00:00 |
13:34:46.85 |
-55:22:52.0 |
HIP 66366 |
14.27 |
| 2026-05-31 12:00 |
13:34:44.17 |
-55:22:29.9 |
HIP 66366 |
14.41 |
| 2026-06-01 00:00 |
13:34:41.50 |
-55:22:07.8 |
HIP 66366 |
14.57 |
| 2026-06-01 12:00 |
13:34:38.86 |
-55:21:45.6 |
HIP 66366 |
14.75 |
| 2026-06-02 00:00 |
13:34:36.24 |
-55:21:23.3 |
HIP 66366 |
14.94 |