メタデータ
| 項目 |
値 |
| Designation |
C/1996 B1 (Szczepanski) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1996-02-06T21:56:56.152320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:47Z |
| Obs used |
489 |
| NEO |
- |
| M1 |
7.100 |
| K1 |
31.750 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1996-02-24.0000000 |
| e |
0.99076543 |
| q (au) |
1.448788 |
| a (au) |
156.887422 |
| i (deg) |
51.918927 |
| Ω (om, deg) |
345.441855 |
| ω (w, deg) |
151.283322 |
| M (ma, deg) |
0.008569 |
等級
散乱 + 全体線形
$$
M_a = (7.421 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.421 |
| n |
6.000 |
| gf |
0.800 |
| gb |
-0.500 |
| k |
0.907 |
| 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 |
| 1996-02-07 |
1996-04-03 |
-0.9314 |
+0.297 |
| 1996-04-03 |
1996-05-22 |
+57.1178 |
-12.969 |
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 |
21:54:01.53 |
-50:27:45.9 |
HIP 108050 |
9.43 |
| 2026-09-20 12:00 |
21:53:58.67 |
-50:27:41.6 |
HIP 108050 |
9.09 |
| 2026-09-21 00:00 |
21:53:55.84 |
-50:27:37.0 |
HIP 108050 |
8.76 |
| 2026-09-21 12:00 |
21:53:53.01 |
-50:27:32.3 |
HIP 108050 |
8.45 |
| 2026-09-22 00:00 |
21:53:50.21 |
-50:27:27.4 |
HIP 108050 |
8.14 |
| 2026-09-22 12:00 |
21:53:47.42 |
-50:27:22.3 |
HIP 108050 |
7.85 |
| 2026-09-23 00:00 |
21:53:44.64 |
-50:27:17.0 |
HIP 108050 |
7.57 |
| 2026-09-23 12:00 |
21:53:41.89 |
-50:27:11.5 |
HIP 108050 |
7.31 |
| 2026-09-24 00:00 |
21:53:39.15 |
-50:27:05.8 |
HIP 108050 |
7.06 |
| 2026-09-24 12:00 |
21:53:36.43 |
-50:26:59.9 |
HIP 108050 |
6.84 |
| 2026-09-25 00:00 |
21:53:33.73 |
-50:26:53.8 |
HIP 108050 |
6.63 |
| 2026-09-25 12:00 |
21:53:31.04 |
-50:26:47.5 |
HIP 108050 |
6.44 |
| 2026-09-26 00:00 |
21:53:28.37 |
-50:26:41.0 |
HIP 108050 |
6.27 |
| 2026-09-26 12:00 |
21:53:25.72 |
-50:26:34.4 |
HIP 108050 |
6.13 |
| 2026-09-27 00:00 |
21:53:23.09 |
-50:26:27.5 |
HIP 108050 |
6.02 |
| 2026-09-27 12:00 |
21:53:20.48 |
-50:26:20.4 |
HIP 108050 |
5.93 |
| 2026-09-28 00:00 |
21:53:17.89 |
-50:26:13.2 |
HIP 108050 |
5.86 |
| 2026-09-28 12:00 |
21:53:15.31 |
-50:26:05.7 |
HIP 108050 |
5.83 |
| 2026-09-29 00:00 |
21:53:12.76 |
-50:25:58.1 |
HIP 108050 |
5.82 |
| 2026-09-29 12:00 |
21:53:10.22 |
-50:25:50.2 |
HIP 108050 |
5.84 |
| 2026-09-30 00:00 |
21:53:07.71 |
-50:25:42.2 |
HIP 108050 |
5.88 |
| 2026-09-30 12:00 |
21:53:05.21 |
-50:25:34.0 |
HIP 108050 |
5.95 |
| 2026-10-01 00:00 |
21:53:02.74 |
-50:25:25.6 |
HIP 108050 |
6.05 |
| 2026-10-01 12:00 |
21:53:00.28 |
-50:25:17.0 |
HIP 108050 |
6.16 |
| 2026-10-02 00:00 |
21:52:57.84 |
-50:25:08.2 |
HIP 108050 |
6.30 |
| 2026-10-02 12:00 |
21:52:55.43 |
-50:24:59.2 |
HIP 108050 |
6.46 |
| 2026-10-03 00:00 |
21:52:53.04 |
-50:24:50.1 |
HIP 108050 |
6.63 |
| 2026-10-03 12:00 |
21:52:50.66 |
-50:24:40.7 |
HIP 108050 |
6.83 |
| 2026-10-04 00:00 |
21:52:48.31 |
-50:24:31.2 |
HIP 108050 |
7.03 |
| 2026-10-04 12:00 |
21:52:45.98 |
-50:24:21.5 |
HIP 108050 |
7.25 |
| 2026-10-05 00:00 |
21:52:43.67 |
-50:24:11.6 |
HIP 108050 |
7.48 |
| 2026-10-05 12:00 |
21:52:41.39 |
-50:24:01.5 |
HIP 108050 |
7.71 |
| 2026-10-06 00:00 |
21:52:39.12 |
-50:23:51.2 |
HIP 108050 |
7.96 |
| 2026-10-06 12:00 |
21:52:36.88 |
-50:23:40.8 |
HIP 108050 |
8.22 |
| 2026-10-07 00:00 |
21:52:34.66 |
-50:23:30.1 |
HIP 108050 |
8.48 |
| 2026-10-07 12:00 |
21:52:32.46 |
-50:23:19.3 |
HIP 108050 |
8.74 |
| 2026-10-08 00:00 |
21:52:30.29 |
-50:23:08.3 |
HIP 108050 |
9.02 |
| 2026-10-08 12:00 |
21:52:28.14 |
-50:22:57.1 |
HIP 108050 |
9.29 |
| 2026-10-09 00:00 |
21:52:26.01 |
-50:22:45.7 |
HIP 108050 |
9.57 |
| 2026-10-09 12:00 |
21:52:23.90 |
-50:22:34.2 |
HIP 108050 |
9.86 |
| 2026-10-10 00:00 |
21:52:21.82 |
-50:22:22.5 |
HIP 108050 |
10.14 |
| 2026-10-10 12:00 |
21:52:19.76 |
-50:22:10.6 |
HIP 108050 |
10.43 |
| 2026-10-11 00:00 |
21:52:17.73 |
-50:21:58.5 |
HIP 108050 |
10.72 |