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) |
| 2026-09-20 00:00 |
22:10:43.86 |
+07:12:46.2 |
HIP 109530 |
23.69 |
| 2026-09-20 12:00 |
22:10:42.93 |
+07:12:38.8 |
HIP 109530 |
23.65 |
| 2026-09-21 00:00 |
22:10:42.01 |
+07:12:31.4 |
HIP 109530 |
23.61 |
| 2026-09-21 12:00 |
22:10:41.09 |
+07:12:24.0 |
HIP 109530 |
23.58 |
| 2026-09-22 00:00 |
22:10:40.18 |
+07:12:16.5 |
HIP 109530 |
23.54 |
| 2026-09-22 12:00 |
22:10:39.27 |
+07:12:09.0 |
HIP 109530 |
23.51 |
| 2026-09-23 00:00 |
22:10:38.36 |
+07:12:01.6 |
HIP 109530 |
23.48 |
| 2026-09-23 12:00 |
22:10:37.46 |
+07:11:54.1 |
HIP 109530 |
23.45 |
| 2026-09-24 00:00 |
22:10:36.57 |
+07:11:46.6 |
HIP 109530 |
23.42 |
| 2026-09-24 12:00 |
22:10:35.67 |
+07:11:39.0 |
HIP 109530 |
23.40 |
| 2026-09-25 00:00 |
22:10:34.79 |
+07:11:31.5 |
HIP 109530 |
23.37 |
| 2026-09-25 12:00 |
22:10:33.90 |
+07:11:23.9 |
HIP 109530 |
23.35 |
| 2026-09-26 00:00 |
22:10:33.03 |
+07:11:16.4 |
HIP 109530 |
23.34 |
| 2026-09-26 12:00 |
22:10:32.15 |
+07:11:08.8 |
HIP 109530 |
23.32 |
| 2026-09-27 00:00 |
22:10:31.29 |
+07:11:01.2 |
HIP 109530 |
23.30 |
| 2026-09-27 12:00 |
22:10:30.42 |
+07:10:53.6 |
HIP 109530 |
23.29 |
| 2026-09-28 00:00 |
22:10:29.56 |
+07:10:46.0 |
HIP 109530 |
23.28 |
| 2026-09-28 12:00 |
22:10:28.71 |
+07:10:38.3 |
HIP 109530 |
23.27 |
| 2026-09-29 00:00 |
22:10:27.86 |
+07:10:30.7 |
HIP 109530 |
23.27 |
| 2026-09-29 12:00 |
22:10:27.02 |
+07:10:23.1 |
HIP 109530 |
23.26 |
| 2026-09-30 00:00 |
22:10:26.18 |
+07:10:15.4 |
HIP 109530 |
23.26 |
| 2026-09-30 12:00 |
22:10:25.35 |
+07:10:07.8 |
HIP 109530 |
23.26 |
| 2026-10-01 00:00 |
22:10:24.53 |
+07:10:00.1 |
HIP 109530 |
23.26 |
| 2026-10-01 12:00 |
22:10:23.71 |
+07:09:52.4 |
HIP 109530 |
23.26 |
| 2026-10-02 00:00 |
22:10:22.89 |
+07:09:44.7 |
HIP 109530 |
23.26 |
| 2026-10-02 12:00 |
22:10:22.08 |
+07:09:37.0 |
HIP 109530 |
23.27 |
| 2026-10-03 00:00 |
22:10:21.28 |
+07:09:29.3 |
HIP 109530 |
23.27 |
| 2026-10-03 12:00 |
22:10:20.48 |
+07:09:21.7 |
HIP 109530 |
23.28 |
| 2026-10-04 00:00 |
22:10:19.68 |
+07:09:13.9 |
HIP 109530 |
23.29 |
| 2026-10-04 12:00 |
22:10:18.90 |
+07:09:06.2 |
HIP 109530 |
23.30 |
| 2026-10-05 00:00 |
22:10:18.12 |
+07:08:58.5 |
HIP 109530 |
23.31 |
| 2026-10-05 12:00 |
22:10:17.34 |
+07:08:50.8 |
HIP 109530 |
23.33 |
| 2026-10-06 00:00 |
22:10:16.57 |
+07:08:43.1 |
HIP 109530 |
23.34 |
| 2026-10-06 12:00 |
22:10:15.81 |
+07:08:35.4 |
HIP 109530 |
23.36 |
| 2026-10-07 00:00 |
22:10:15.05 |
+07:08:27.7 |
HIP 109530 |
23.38 |
| 2026-10-07 12:00 |
22:10:14.30 |
+07:08:20.0 |
HIP 109530 |
23.40 |
| 2026-10-08 00:00 |
22:10:13.56 |
+07:08:12.2 |
HIP 109530 |
23.42 |
| 2026-10-08 12:00 |
22:10:12.82 |
+07:08:04.5 |
HIP 109530 |
23.44 |
| 2026-10-09 00:00 |
22:10:12.09 |
+07:07:56.8 |
HIP 109530 |
23.46 |
| 2026-10-09 12:00 |
22:10:11.37 |
+07:07:49.1 |
HIP 109530 |
23.48 |
| 2026-10-10 00:00 |
22:10:10.65 |
+07:07:41.4 |
HIP 109530 |
23.51 |
| 2026-10-10 12:00 |
22:10:09.94 |
+07:07:33.7 |
HIP 109530 |
23.53 |
| 2026-10-11 00:00 |
22:10:09.23 |
+07:07:26.0 |
HIP 109530 |
23.56 |