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) |
| 2026-03-26 00:00 |
22:00:57.50 |
-49:06:03.2 |
HIP 108620 |
16.97 |
| 2026-03-26 12:00 |
22:01:00.21 |
-49:06:06.9 |
HIP 108620 |
17.21 |
| 2026-03-27 00:00 |
22:01:02.89 |
-49:06:10.7 |
HIP 108620 |
17.46 |
| 2026-03-27 12:00 |
22:01:05.56 |
-49:06:14.7 |
HIP 108620 |
17.71 |
| 2026-03-28 00:00 |
22:01:08.21 |
-49:06:18.9 |
HIP 108620 |
17.98 |
| 2026-03-28 12:00 |
22:01:10.84 |
-49:06:23.2 |
HIP 108620 |
18.25 |
| 2026-03-29 00:00 |
22:01:13.46 |
-49:06:27.8 |
HIP 108620 |
18.53 |
| 2026-03-29 12:00 |
22:01:16.06 |
-49:06:32.5 |
HIP 108620 |
18.81 |
| 2026-03-30 00:00 |
22:01:18.64 |
-49:06:37.5 |
HIP 108620 |
19.11 |
| 2026-03-30 12:00 |
22:01:21.20 |
-49:06:42.6 |
HIP 108620 |
19.41 |
| 2026-03-31 00:00 |
22:01:23.75 |
-49:06:47.9 |
HIP 108620 |
19.71 |
| 2026-03-31 12:00 |
22:01:26.27 |
-49:06:53.4 |
HIP 108620 |
20.02 |
| 2026-04-01 00:00 |
22:01:28.78 |
-49:06:59.0 |
HIP 108620 |
20.34 |
| 2026-04-01 12:00 |
22:01:31.27 |
-49:07:04.9 |
HIP 108620 |
20.66 |
| 2026-04-02 00:00 |
22:01:33.74 |
-49:07:10.9 |
HIP 108620 |
20.98 |
| 2026-04-02 12:00 |
22:01:36.19 |
-49:07:17.1 |
HIP 108620 |
21.31 |
| 2026-04-03 00:00 |
22:01:38.62 |
-49:07:23.6 |
HIP 108620 |
21.64 |
| 2026-04-03 12:00 |
22:01:41.04 |
-49:07:30.1 |
HIP 108620 |
21.98 |
| 2026-04-04 00:00 |
22:01:43.43 |
-49:07:36.9 |
HIP 108620 |
22.31 |
| 2026-04-04 12:00 |
22:01:45.80 |
-49:07:43.9 |
HIP 108620 |
22.65 |
| 2026-04-05 00:00 |
22:01:48.16 |
-49:07:51.0 |
HIP 108620 |
22.99 |
| 2026-04-05 12:00 |
22:01:50.49 |
-49:07:58.3 |
HIP 108620 |
23.34 |
| 2026-04-06 00:00 |
22:01:52.81 |
-49:08:05.8 |
HIP 108620 |
23.68 |
| 2026-04-06 12:00 |
22:01:55.10 |
-49:08:13.4 |
HIP 108620 |
24.03 |
| 2026-04-07 00:00 |
22:01:57.38 |
-49:08:21.3 |
HIP 108620 |
24.38 |
| 2026-04-07 12:00 |
22:01:59.63 |
-49:08:29.3 |
HIP 108620 |
24.73 |
| 2026-04-08 00:00 |
22:02:01.86 |
-49:08:37.5 |
HIP 108620 |
25.08 |
| 2026-04-08 12:00 |
22:02:04.07 |
-49:08:45.9 |
HIP 108620 |
25.43 |
| 2026-04-09 00:00 |
22:02:06.27 |
-49:08:54.4 |
HIP 108620 |
25.79 |
| 2026-04-09 12:00 |
22:02:08.44 |
-49:09:03.2 |
HIP 108620 |
26.14 |
| 2026-04-10 00:00 |
22:02:10.59 |
-49:09:12.1 |
HIP 108620 |
26.49 |
| 2026-04-10 12:00 |
22:02:12.71 |
-49:09:21.2 |
HIP 108620 |
26.85 |
| 2026-04-11 00:00 |
22:02:14.82 |
-49:09:30.4 |
HIP 108620 |
27.20 |
| 2026-04-11 12:00 |
22:02:16.90 |
-49:09:39.9 |
HIP 108620 |
27.56 |
| 2026-04-12 00:00 |
22:02:18.96 |
-49:09:49.5 |
HIP 108620 |
27.91 |
| 2026-04-12 12:00 |
22:02:21.00 |
-49:09:59.2 |
HIP 108620 |
28.26 |
| 2026-04-13 00:00 |
22:02:23.02 |
-49:10:09.2 |
HIP 108620 |
28.62 |
| 2026-04-13 12:00 |
22:02:25.02 |
-49:10:19.3 |
HIP 108620 |
28.97 |
| 2026-04-14 00:00 |
22:02:26.99 |
-49:10:29.6 |
HIP 108620 |
29.32 |
| 2026-04-14 12:00 |
22:02:28.94 |
-49:10:40.1 |
HIP 108620 |
29.68 |
| 2026-04-15 00:00 |
22:02:30.87 |
-49:10:50.7 |
HIP 108620 |
30.03 |
| 2026-04-15 12:00 |
22:02:32.77 |
-49:11:01.5 |
HIP 108620 |
30.38 |
| 2026-04-16 00:00 |
22:02:34.66 |
-49:11:12.5 |
HIP 108620 |
30.73 |