メタデータ
| 項目 |
値 |
| Designation |
C/1948 L1 (Honda-Bernasconi) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1948-05-15T23:03:10.120320Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:29:09Z |
| Obs used |
17 |
| NEO |
- |
| M1 |
- |
| K1 |
- |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1948-06-25.0000000 |
| e |
1.00103010 |
| q (au) |
0.206577 |
| a (au) |
-200.540589 |
| i (deg) |
23.190084 |
| Ω (om, deg) |
203.661991 |
| ω (w, deg) |
317.153520 |
| M (ma, deg) |
0.013896 |
等級
散乱 + 全体線形
$$
M_a = (7.694 + 4.502\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
7.694 |
| n |
4.502 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
22:13:36.98 |
+07:17:17.6 |
HIP 109641 |
16.12 |
| 2026-05-12 12:00 |
22:13:37.18 |
+07:17:23.7 |
HIP 109641 |
16.12 |
| 2026-05-13 00:00 |
22:13:37.37 |
+07:17:29.8 |
HIP 109641 |
16.12 |
| 2026-05-13 12:00 |
22:13:37.56 |
+07:17:35.9 |
HIP 109641 |
16.12 |
| 2026-05-14 00:00 |
22:13:37.74 |
+07:17:41.9 |
HIP 109641 |
16.12 |
| 2026-05-14 12:00 |
22:13:37.90 |
+07:17:47.9 |
HIP 109641 |
16.12 |
| 2026-05-15 00:00 |
22:13:38.06 |
+07:17:53.9 |
HIP 109641 |
16.12 |
| 2026-05-15 12:00 |
22:13:38.21 |
+07:17:59.8 |
HIP 109641 |
16.11 |
| 2026-05-16 00:00 |
22:13:38.35 |
+07:18:05.6 |
HIP 109641 |
16.11 |
| 2026-05-16 12:00 |
22:13:38.49 |
+07:18:11.5 |
HIP 109641 |
16.10 |
| 2026-05-17 00:00 |
22:13:38.61 |
+07:18:17.2 |
HIP 109641 |
16.09 |
| 2026-05-17 12:00 |
22:13:38.72 |
+07:18:23.0 |
HIP 109641 |
16.09 |
| 2026-05-18 00:00 |
22:13:38.83 |
+07:18:28.7 |
HIP 109641 |
16.08 |
| 2026-05-18 12:00 |
22:13:38.93 |
+07:18:34.3 |
HIP 109641 |
16.07 |
| 2026-05-19 00:00 |
22:13:39.02 |
+07:18:39.9 |
HIP 109641 |
16.05 |
| 2026-05-19 12:00 |
22:13:39.10 |
+07:18:45.5 |
HIP 109641 |
16.04 |
| 2026-05-20 00:00 |
22:13:39.17 |
+07:18:51.0 |
HIP 109641 |
16.03 |
| 2026-05-20 12:00 |
22:13:39.23 |
+07:18:56.5 |
HIP 109641 |
16.01 |
| 2026-05-21 00:00 |
22:13:39.28 |
+07:19:01.9 |
HIP 109641 |
15.99 |
| 2026-05-21 12:00 |
22:13:39.33 |
+07:19:07.3 |
HIP 109641 |
15.98 |
| 2026-05-22 00:00 |
22:13:39.36 |
+07:19:12.6 |
HIP 109641 |
15.96 |
| 2026-05-22 12:00 |
22:13:39.39 |
+07:19:17.9 |
HIP 109641 |
15.93 |
| 2026-05-23 00:00 |
22:13:39.41 |
+07:19:23.2 |
HIP 109641 |
15.91 |
| 2026-05-23 12:00 |
22:13:39.41 |
+07:19:28.3 |
HIP 109641 |
15.89 |
| 2026-05-24 00:00 |
22:13:39.41 |
+07:19:33.5 |
HIP 109641 |
15.86 |
| 2026-05-24 12:00 |
22:13:39.41 |
+07:19:38.6 |
HIP 109641 |
15.84 |
| 2026-05-25 00:00 |
22:13:39.39 |
+07:19:43.7 |
HIP 109641 |
15.81 |
| 2026-05-25 12:00 |
22:13:39.36 |
+07:19:48.7 |
HIP 109641 |
15.78 |
| 2026-05-26 00:00 |
22:13:39.33 |
+07:19:53.6 |
HIP 109641 |
15.75 |
| 2026-05-26 12:00 |
22:13:39.28 |
+07:19:58.5 |
HIP 109641 |
15.72 |
| 2026-05-27 00:00 |
22:13:39.23 |
+07:20:03.4 |
HIP 109641 |
15.68 |
| 2026-05-27 12:00 |
22:13:39.17 |
+07:20:08.2 |
HIP 109641 |
15.65 |
| 2026-05-28 00:00 |
22:13:39.10 |
+07:20:12.9 |
HIP 109641 |
15.61 |
| 2026-05-28 12:00 |
22:13:39.02 |
+07:20:17.7 |
HIP 109641 |
15.57 |
| 2026-05-29 00:00 |
22:13:38.94 |
+07:20:22.3 |
HIP 109641 |
15.53 |
| 2026-05-29 12:00 |
22:13:38.84 |
+07:20:26.9 |
HIP 109641 |
15.49 |
| 2026-05-30 00:00 |
22:13:38.73 |
+07:20:31.5 |
HIP 109641 |
15.44 |
| 2026-05-30 12:00 |
22:13:38.62 |
+07:20:36.0 |
HIP 109641 |
15.40 |
| 2026-05-31 00:00 |
22:13:38.50 |
+07:20:40.4 |
HIP 109641 |
15.35 |
| 2026-05-31 12:00 |
22:13:38.37 |
+07:20:44.8 |
HIP 109641 |
15.30 |
| 2026-06-01 00:00 |
22:13:38.23 |
+07:20:49.2 |
HIP 109641 |
15.25 |
| 2026-06-01 12:00 |
22:13:38.08 |
+07:20:53.5 |
HIP 109641 |
15.20 |
| 2026-06-02 00:00 |
22:13:37.92 |
+07:20:57.7 |
HIP 109641 |
15.15 |