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) |
| 2026-09-20 00:00 |
13:36:14.52 |
-54:15:04.0 |
HIP 66371 |
21.38 |
| 2026-09-20 12:00 |
13:36:17.62 |
-54:15:01.6 |
HIP 66371 |
21.32 |
| 2026-09-21 00:00 |
13:36:20.74 |
-54:14:59.4 |
HIP 66371 |
21.28 |
| 2026-09-21 12:00 |
13:36:23.87 |
-54:14:57.5 |
HIP 66371 |
21.25 |
| 2026-09-22 00:00 |
13:36:27.01 |
-54:14:55.7 |
HIP 66371 |
21.24 |
| 2026-09-22 12:00 |
13:36:30.16 |
-54:14:54.1 |
HIP 66371 |
21.24 |
| 2026-09-23 00:00 |
13:36:33.33 |
-54:14:52.8 |
HIP 66371 |
21.25 |
| 2026-09-23 12:00 |
13:36:36.51 |
-54:14:51.6 |
HIP 66371 |
21.28 |
| 2026-09-24 00:00 |
13:36:39.70 |
-54:14:50.7 |
HIP 66371 |
21.32 |
| 2026-09-24 12:00 |
13:36:42.90 |
-54:14:49.9 |
HIP 66371 |
21.37 |
| 2026-09-25 00:00 |
13:36:46.12 |
-54:14:49.4 |
HIP 66371 |
21.44 |
| 2026-09-25 12:00 |
13:36:49.35 |
-54:14:49.0 |
HIP 66371 |
21.52 |
| 2026-09-26 00:00 |
13:36:52.58 |
-54:14:48.9 |
HIP 66371 |
21.62 |
| 2026-09-26 12:00 |
13:36:55.83 |
-54:14:49.0 |
HIP 66371 |
21.72 |
| 2026-09-27 00:00 |
13:36:59.09 |
-54:14:49.3 |
HIP 66371 |
21.85 |
| 2026-09-27 12:00 |
13:37:02.37 |
-54:14:49.8 |
HIP 66371 |
21.98 |
| 2026-09-28 00:00 |
13:37:05.65 |
-54:14:50.4 |
HIP 66371 |
22.13 |
| 2026-09-28 12:00 |
13:37:08.94 |
-54:14:51.3 |
HIP 66371 |
22.29 |
| 2026-09-29 00:00 |
13:37:12.24 |
-54:14:52.4 |
HIP 66371 |
22.47 |
| 2026-09-29 12:00 |
13:37:15.56 |
-54:14:53.7 |
HIP 66371 |
22.66 |
| 2026-09-30 00:00 |
13:37:18.88 |
-54:14:55.2 |
HIP 66651 |
22.31 |
| 2026-09-30 12:00 |
13:37:22.21 |
-54:14:56.9 |
HIP 66651 |
21.85 |
| 2026-10-01 00:00 |
13:37:25.55 |
-54:14:58.9 |
HIP 66651 |
21.39 |
| 2026-10-01 12:00 |
13:37:28.91 |
-54:15:01.0 |
HIP 66651 |
20.93 |
| 2026-10-02 00:00 |
13:37:32.27 |
-54:15:03.3 |
HIP 66651 |
20.47 |
| 2026-10-02 12:00 |
13:37:35.63 |
-54:15:05.8 |
HIP 66651 |
20.02 |
| 2026-10-03 00:00 |
13:37:39.01 |
-54:15:08.6 |
HIP 66651 |
19.56 |
| 2026-10-03 12:00 |
13:37:42.40 |
-54:15:11.5 |
HIP 66651 |
19.11 |
| 2026-10-04 00:00 |
13:37:45.79 |
-54:15:14.6 |
HIP 66651 |
18.66 |
| 2026-10-04 12:00 |
13:37:49.19 |
-54:15:18.0 |
HIP 66651 |
18.21 |
| 2026-10-05 00:00 |
13:37:52.60 |
-54:15:21.5 |
HIP 66651 |
17.77 |
| 2026-10-05 12:00 |
13:37:56.02 |
-54:15:25.3 |
HIP 66651 |
17.33 |
| 2026-10-06 00:00 |
13:37:59.45 |
-54:15:29.3 |
HIP 66651 |
16.89 |
| 2026-10-06 12:00 |
13:38:02.88 |
-54:15:33.4 |
HIP 66651 |
16.46 |
| 2026-10-07 00:00 |
13:38:06.32 |
-54:15:37.8 |
HIP 66651 |
16.03 |
| 2026-10-07 12:00 |
13:38:09.76 |
-54:15:42.4 |
HIP 66651 |
15.61 |
| 2026-10-08 00:00 |
13:38:13.21 |
-54:15:47.1 |
HIP 66651 |
15.19 |
| 2026-10-08 12:00 |
13:38:16.67 |
-54:15:52.1 |
HIP 66651 |
14.78 |
| 2026-10-09 00:00 |
13:38:20.14 |
-54:15:57.3 |
HIP 66651 |
14.38 |
| 2026-10-09 12:00 |
13:38:23.60 |
-54:16:02.7 |
HIP 66651 |
13.98 |
| 2026-10-10 00:00 |
13:38:27.08 |
-54:16:08.3 |
HIP 66651 |
13.60 |
| 2026-10-10 12:00 |
13:38:30.56 |
-54:16:14.1 |
HIP 66651 |
13.22 |
| 2026-10-11 00:00 |
13:38:34.04 |
-54:16:20.1 |
HIP 66651 |
12.86 |