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) |
| 2026-03-26 00:00 |
13:42:30.11 |
-55:47:33.2 |
HIP 66956 |
7.92 |
| 2026-03-26 12:00 |
13:42:26.60 |
-55:47:35.6 |
HIP 66956 |
8.40 |
| 2026-03-27 00:00 |
13:42:23.07 |
-55:47:37.8 |
HIP 66956 |
8.88 |
| 2026-03-27 12:00 |
13:42:19.53 |
-55:47:39.8 |
HIP 66956 |
9.36 |
| 2026-03-28 00:00 |
13:42:15.98 |
-55:47:41.5 |
HIP 66956 |
9.85 |
| 2026-03-28 12:00 |
13:42:12.42 |
-55:47:43.0 |
HIP 66956 |
10.34 |
| 2026-03-29 00:00 |
13:42:08.85 |
-55:47:44.2 |
HIP 66956 |
10.83 |
| 2026-03-29 12:00 |
13:42:05.26 |
-55:47:45.2 |
HIP 66956 |
11.32 |
| 2026-03-30 00:00 |
13:42:01.67 |
-55:47:46.0 |
HIP 66956 |
11.82 |
| 2026-03-30 12:00 |
13:41:58.06 |
-55:47:46.6 |
HIP 66956 |
12.31 |
| 2026-03-31 00:00 |
13:41:54.45 |
-55:47:47.0 |
HIP 66956 |
12.81 |
| 2026-03-31 12:00 |
13:41:50.82 |
-55:47:47.1 |
HIP 66956 |
13.31 |
| 2026-04-01 00:00 |
13:41:47.18 |
-55:47:47.0 |
HIP 66956 |
13.81 |
| 2026-04-01 12:00 |
13:41:43.54 |
-55:47:46.6 |
HIP 66956 |
14.31 |
| 2026-04-02 00:00 |
13:41:39.88 |
-55:47:46.0 |
HIP 66956 |
14.81 |
| 2026-04-02 12:00 |
13:41:36.22 |
-55:47:45.2 |
HIP 66956 |
15.31 |
| 2026-04-03 00:00 |
13:41:32.55 |
-55:47:44.2 |
HIP 66956 |
15.82 |
| 2026-04-03 12:00 |
13:41:28.87 |
-55:47:43.0 |
HIP 66956 |
16.33 |
| 2026-04-04 00:00 |
13:41:25.18 |
-55:47:41.5 |
HIP 66956 |
16.83 |
| 2026-04-04 12:00 |
13:41:21.48 |
-55:47:39.8 |
HIP 66956 |
17.34 |
| 2026-04-05 00:00 |
13:41:17.77 |
-55:47:37.8 |
HIP 66956 |
17.85 |
| 2026-04-05 12:00 |
13:41:14.06 |
-55:47:35.7 |
HIP 66956 |
18.36 |
| 2026-04-06 00:00 |
13:41:10.34 |
-55:47:33.3 |
HIP 66956 |
18.88 |
| 2026-04-06 12:00 |
13:41:06.62 |
-55:47:30.7 |
HIP 66956 |
19.39 |
| 2026-04-07 00:00 |
13:41:02.89 |
-55:47:27.8 |
HIP 66956 |
19.90 |
| 2026-04-07 12:00 |
13:40:59.15 |
-55:47:24.7 |
HIP 66956 |
20.42 |
| 2026-04-08 00:00 |
13:40:55.41 |
-55:47:21.4 |
HIP 66956 |
20.94 |
| 2026-04-08 12:00 |
13:40:51.66 |
-55:47:17.9 |
HIP 66956 |
21.45 |
| 2026-04-09 00:00 |
13:40:47.90 |
-55:47:14.2 |
HIP 66956 |
21.97 |
| 2026-04-09 12:00 |
13:40:44.14 |
-55:47:10.2 |
HIP 66956 |
22.49 |
| 2026-04-10 00:00 |
13:40:40.38 |
-55:47:06.0 |
HIP 66956 |
23.01 |
| 2026-04-10 12:00 |
13:40:36.61 |
-55:47:01.6 |
HIP 66956 |
23.54 |
| 2026-04-11 00:00 |
13:40:32.84 |
-55:46:56.9 |
HIP 66956 |
24.06 |
| 2026-04-11 12:00 |
13:40:29.06 |
-55:46:52.0 |
HIP 66956 |
24.58 |
| 2026-04-12 00:00 |
13:40:25.28 |
-55:46:46.9 |
HIP 66956 |
25.11 |
| 2026-04-12 12:00 |
13:40:21.50 |
-55:46:41.6 |
HIP 66483 |
24.92 |
| 2026-04-13 00:00 |
13:40:17.72 |
-55:46:36.1 |
HIP 66483 |
24.51 |
| 2026-04-13 12:00 |
13:40:13.93 |
-55:46:30.3 |
HIP 66483 |
24.10 |
| 2026-04-14 00:00 |
13:40:10.14 |
-55:46:24.3 |
HIP 66483 |
23.70 |
| 2026-04-14 12:00 |
13:40:06.35 |
-55:46:18.1 |
HIP 66483 |
23.31 |
| 2026-04-15 00:00 |
13:40:02.55 |
-55:46:11.7 |
HIP 66483 |
22.93 |
| 2026-04-15 12:00 |
13:39:58.76 |
-55:46:05.0 |
HIP 66483 |
22.56 |
| 2026-04-16 00:00 |
13:39:54.96 |
-55:45:58.1 |
HIP 66483 |
22.20 |