C/1996 N1 (Brewington)
メタデータ
| 項目 |
値 |
| Designation |
C/1996 N1 (Brewington) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1996-08-03T10:10:19.309440Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:50Z |
| Obs used |
303 |
| NEO |
- |
| M1 |
11.900 |
| K1 |
16.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1996-08-09.0000000 |
| e |
1.00056420 |
| q (au) |
0.925821 |
| a (au) |
-1640.935799 |
| i (deg) |
52.147950 |
| Ω (om, deg) |
234.900362 |
| ω (w, deg) |
43.969685 |
| M (ma, deg) |
0.000083 |
等級
散乱 + 全体線形
$$
M_a = (8.902 + 5.315\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
8.902 |
| n |
5.315 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.800 |
| 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 |
| 1996-07-05 |
1996-08-02 |
+5.1066 |
+1.494 |
| 1996-08-03 |
1996-09-01 |
-15.3196 |
-0.453 |
| 1996-09-01 |
1996-09-24 |
+16.0071 |
-1.174 |
| 1996-09-24 |
1996-11-09 |
+1.3962 |
+0.718 |
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) |
| 2026-02-03 00:00 |
04:55:13.57 |
-00:02:54.2 |
HIP 22808 |
14.79 |
| 2026-02-03 12:00 |
04:55:12.43 |
-00:02:45.3 |
HIP 22808 |
14.65 |
| 2026-02-04 00:00 |
04:55:11.30 |
-00:02:36.3 |
HIP 22808 |
14.52 |
| 2026-02-04 12:00 |
04:55:10.19 |
-00:02:27.2 |
HIP 22808 |
14.41 |
| 2026-02-05 00:00 |
04:55:09.10 |
-00:02:18.0 |
HIP 22808 |
14.30 |
| 2026-02-05 12:00 |
04:55:08.03 |
-00:02:08.8 |
HIP 22808 |
14.21 |
| 2026-02-06 00:00 |
04:55:06.98 |
-00:01:59.5 |
HIP 22808 |
14.12 |
| 2026-02-06 12:00 |
04:55:05.94 |
-00:01:50.1 |
HIP 22808 |
14.05 |
| 2026-02-07 00:00 |
04:55:04.92 |
-00:01:40.6 |
HIP 22808 |
13.98 |
| 2026-02-07 12:00 |
04:55:03.92 |
-00:01:31.1 |
HIP 22808 |
13.93 |
| 2026-02-08 00:00 |
04:55:02.93 |
-00:01:21.4 |
HIP 22808 |
13.88 |
| 2026-02-08 12:00 |
04:55:01.97 |
-00:01:11.7 |
HIP 22808 |
13.85 |
| 2026-02-09 00:00 |
04:55:01.02 |
-00:01:02.0 |
HIP 22808 |
13.82 |
| 2026-02-09 12:00 |
04:55:00.09 |
-00:00:52.1 |
HIP 22808 |
13.81 |
| 2026-02-10 00:00 |
04:54:59.18 |
-00:00:42.2 |
HIP 22808 |
13.80 |
| 2026-02-10 12:00 |
04:54:58.29 |
-00:00:32.2 |
HIP 22808 |
13.81 |
| 2026-02-11 00:00 |
04:54:57.42 |
-00:00:22.1 |
HIP 22808 |
13.82 |
| 2026-02-11 12:00 |
04:54:56.56 |
-00:00:12.0 |
HIP 22808 |
13.84 |
| 2026-02-12 00:00 |
04:54:55.73 |
-00:00:01.8 |
HIP 22808 |
13.88 |
| 2026-02-12 12:00 |
04:54:54.91 |
+00:00:08.5 |
HIP 22808 |
13.91 |
| 2026-02-13 00:00 |
04:54:54.11 |
+00:00:18.9 |
HIP 22808 |
13.96 |
| 2026-02-13 12:00 |
04:54:53.33 |
+00:00:29.3 |
HIP 22808 |
14.02 |
| 2026-02-14 00:00 |
04:54:52.57 |
+00:00:39.8 |
HIP 22808 |
14.08 |
| 2026-02-14 12:00 |
04:54:51.82 |
+00:00:50.3 |
HIP 22808 |
14.15 |
| 2026-02-15 00:00 |
04:54:51.10 |
+00:01:00.9 |
HIP 22808 |
14.23 |
| 2026-02-15 12:00 |
04:54:50.40 |
+00:01:11.6 |
HIP 22808 |
14.32 |
| 2026-02-16 00:00 |
04:54:49.71 |
+00:01:22.3 |
HIP 22808 |
14.41 |
| 2026-02-16 12:00 |
04:54:49.04 |
+00:01:33.1 |
HIP 22808 |
14.51 |
| 2026-02-17 00:00 |
04:54:48.40 |
+00:01:44.0 |
HIP 22808 |
14.61 |
| 2026-02-17 12:00 |
04:54:47.77 |
+00:01:54.9 |
HIP 22808 |
14.72 |
| 2026-02-18 00:00 |
04:54:47.16 |
+00:02:05.9 |
HIP 22808 |
14.84 |
| 2026-02-18 12:00 |
04:54:46.57 |
+00:02:16.9 |
HIP 22808 |
14.96 |
| 2026-02-19 00:00 |
04:54:46.00 |
+00:02:28.0 |
HIP 22808 |
15.09 |
| 2026-02-19 12:00 |
04:54:45.45 |
+00:02:39.1 |
HIP 22808 |
15.22 |
| 2026-02-20 00:00 |
04:54:44.92 |
+00:02:50.3 |
HIP 22808 |
15.36 |
| 2026-02-20 12:00 |
04:54:44.41 |
+00:03:01.6 |
HIP 22808 |
15.50 |
| 2026-02-21 00:00 |
04:54:43.91 |
+00:03:12.9 |
HIP 22808 |
15.64 |
| 2026-02-21 12:00 |
04:54:43.44 |
+00:03:24.2 |
HIP 22808 |
15.79 |
| 2026-02-22 00:00 |
04:54:42.99 |
+00:03:35.6 |
HIP 22808 |
15.95 |
| 2026-02-22 12:00 |
04:54:42.55 |
+00:03:47.1 |
HIP 22808 |
16.10 |
| 2026-02-23 00:00 |
04:54:42.14 |
+00:03:58.6 |
HIP 22808 |
16.26 |
| 2026-02-23 12:00 |
04:54:41.74 |
+00:04:10.1 |
HIP 22808 |
16.43 |
| 2026-02-24 00:00 |
04:54:41.37 |
+00:04:21.7 |
HIP 22808 |
16.59 |