C/1980 O1 (Cernis-Petrauskas)
メタデータ
| 項目 |
値 |
| Designation |
C/1980 O1 (Cernis-Petrauskas) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1980-06-22T10:43:23.995200Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:29Z |
| Obs used |
20 |
| NEO |
- |
| M1 |
9.700 |
| K1 |
8.750 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1980-08-29.0000000 |
| e |
1.00000000 |
| q (au) |
0.522897 |
| a (au) |
- |
| i (deg) |
49.068235 |
| Ω (om, deg) |
160.632533 |
| ω (w, deg) |
337.783670 |
| M (ma, deg) |
- |
等級
散乱 + 全体線形
$$
M_a = (7.470 + 3.779\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.470 |
| n |
3.779 |
| gf |
0.800 |
| gb |
-0.765 |
| k |
1.000 |
| δ90 |
10.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
20:54:48.73 |
+06:54:14.6 |
HIP 103160 |
16.17 |
| 2026-02-03 12:00 |
20:54:50.37 |
+06:54:21.2 |
HIP 103160 |
16.39 |
| 2026-02-04 00:00 |
20:54:52.00 |
+06:54:27.8 |
HIP 103160 |
16.61 |
| 2026-02-04 12:00 |
20:54:53.64 |
+06:54:34.5 |
HIP 103160 |
16.84 |
| 2026-02-05 00:00 |
20:54:55.27 |
+06:54:41.3 |
HIP 103160 |
17.08 |
| 2026-02-05 12:00 |
20:54:56.91 |
+06:54:48.2 |
HIP 103160 |
17.32 |
| 2026-02-06 00:00 |
20:54:58.54 |
+06:54:55.2 |
HIP 103160 |
17.57 |
| 2026-02-06 12:00 |
20:55:00.17 |
+06:55:02.2 |
HIP 103160 |
17.83 |
| 2026-02-07 00:00 |
20:55:01.80 |
+06:55:09.4 |
HIP 103160 |
18.08 |
| 2026-02-07 12:00 |
20:55:03.43 |
+06:55:16.6 |
HIP 103160 |
18.35 |
| 2026-02-08 00:00 |
20:55:05.05 |
+06:55:23.9 |
HIP 103160 |
18.62 |
| 2026-02-08 12:00 |
20:55:06.68 |
+06:55:31.3 |
HIP 103160 |
18.89 |
| 2026-02-09 00:00 |
20:55:08.30 |
+06:55:38.8 |
HIP 103160 |
19.17 |
| 2026-02-09 12:00 |
20:55:09.92 |
+06:55:46.3 |
HIP 103160 |
19.45 |
| 2026-02-10 00:00 |
20:55:11.54 |
+06:55:53.9 |
HIP 103160 |
19.73 |
| 2026-02-10 12:00 |
20:55:13.15 |
+06:56:01.6 |
HIP 103160 |
20.02 |
| 2026-02-11 00:00 |
20:55:14.76 |
+06:56:09.4 |
HIP 103160 |
20.31 |
| 2026-02-11 12:00 |
20:55:16.38 |
+06:56:17.3 |
HIP 103160 |
20.61 |
| 2026-02-12 00:00 |
20:55:17.98 |
+06:56:25.2 |
HIP 103160 |
20.91 |
| 2026-02-12 12:00 |
20:55:19.59 |
+06:56:33.2 |
HIP 103160 |
21.21 |
| 2026-02-13 00:00 |
20:55:21.19 |
+06:56:41.3 |
HIP 103160 |
21.51 |
| 2026-02-13 12:00 |
20:55:22.79 |
+06:56:49.5 |
HIP 103160 |
21.82 |
| 2026-02-14 00:00 |
20:55:24.39 |
+06:56:57.7 |
HIP 103160 |
22.13 |
| 2026-02-14 12:00 |
20:55:25.98 |
+06:57:06.1 |
HIP 103160 |
22.44 |
| 2026-02-15 00:00 |
20:55:27.57 |
+06:57:14.4 |
HIP 103160 |
22.76 |
| 2026-02-15 12:00 |
20:55:29.15 |
+06:57:22.9 |
HIP 103160 |
23.07 |
| 2026-02-16 00:00 |
20:55:30.73 |
+06:57:31.4 |
HIP 103160 |
23.39 |
| 2026-02-16 12:00 |
20:55:32.31 |
+06:57:40.1 |
HIP 103160 |
23.71 |
| 2026-02-17 00:00 |
20:55:33.89 |
+06:57:48.7 |
HIP 103160 |
24.03 |
| 2026-02-17 12:00 |
20:55:35.46 |
+06:57:57.5 |
HIP 103160 |
24.35 |
| 2026-02-18 00:00 |
20:55:37.02 |
+06:58:06.3 |
HIP 103160 |
24.68 |
| 2026-02-18 12:00 |
20:55:38.59 |
+06:58:15.2 |
HIP 103160 |
25.00 |
| 2026-02-19 00:00 |
20:55:40.14 |
+06:58:24.2 |
HIP 103160 |
25.33 |
| 2026-02-19 12:00 |
20:55:41.70 |
+06:58:33.2 |
HIP 103160 |
25.66 |
| 2026-02-20 00:00 |
20:55:43.25 |
+06:58:42.3 |
HIP 103160 |
25.99 |
| 2026-02-20 12:00 |
20:55:44.79 |
+06:58:51.4 |
HIP 103160 |
26.32 |
| 2026-02-21 00:00 |
20:55:46.33 |
+06:59:00.7 |
HIP 103160 |
26.65 |
| 2026-02-21 12:00 |
20:55:47.86 |
+06:59:09.9 |
HIP 103160 |
26.98 |
| 2026-02-22 00:00 |
20:55:49.39 |
+06:59:19.3 |
HIP 103160 |
27.31 |
| 2026-02-22 12:00 |
20:55:50.92 |
+06:59:28.7 |
HIP 103160 |
27.65 |
| 2026-02-23 00:00 |
20:55:52.43 |
+06:59:38.2 |
HIP 103160 |
27.98 |
| 2026-02-23 12:00 |
20:55:53.95 |
+06:59:47.7 |
HIP 103160 |
28.31 |
| 2026-02-24 00:00 |
20:55:55.46 |
+06:59:57.3 |
HIP 103160 |
28.65 |