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) |
| 2026-03-26 00:00 |
22:12:43.08 |
+07:05:58.2 |
HIP 109582 |
17.11 |
| 2026-03-26 12:00 |
22:12:43.96 |
+07:06:05.8 |
HIP 109582 |
17.35 |
| 2026-03-27 00:00 |
22:12:44.84 |
+07:06:13.3 |
HIP 109582 |
17.60 |
| 2026-03-27 12:00 |
22:12:45.71 |
+07:06:20.9 |
HIP 109582 |
17.84 |
| 2026-03-28 00:00 |
22:12:46.57 |
+07:06:28.5 |
HIP 109641 |
17.84 |
| 2026-03-28 12:00 |
22:12:47.43 |
+07:06:36.0 |
HIP 109641 |
17.74 |
| 2026-03-29 00:00 |
22:12:48.28 |
+07:06:43.6 |
HIP 109641 |
17.64 |
| 2026-03-29 12:00 |
22:12:49.13 |
+07:06:51.2 |
HIP 109641 |
17.55 |
| 2026-03-30 00:00 |
22:12:49.97 |
+07:06:58.8 |
HIP 109641 |
17.46 |
| 2026-03-30 12:00 |
22:12:50.81 |
+07:07:06.4 |
HIP 109641 |
17.37 |
| 2026-03-31 00:00 |
22:12:51.64 |
+07:07:14.0 |
HIP 109641 |
17.28 |
| 2026-03-31 12:00 |
22:12:52.47 |
+07:07:21.6 |
HIP 109641 |
17.20 |
| 2026-04-01 00:00 |
22:12:53.29 |
+07:07:29.2 |
HIP 109641 |
17.12 |
| 2026-04-01 12:00 |
22:12:54.11 |
+07:07:36.9 |
HIP 109641 |
17.04 |
| 2026-04-02 00:00 |
22:12:54.92 |
+07:07:44.5 |
HIP 109641 |
16.97 |
| 2026-04-02 12:00 |
22:12:55.72 |
+07:07:52.1 |
HIP 109641 |
16.89 |
| 2026-04-03 00:00 |
22:12:56.52 |
+07:07:59.7 |
HIP 109641 |
16.82 |
| 2026-04-03 12:00 |
22:12:57.31 |
+07:08:07.4 |
HIP 109641 |
16.75 |
| 2026-04-04 00:00 |
22:12:58.10 |
+07:08:15.0 |
HIP 109641 |
16.69 |
| 2026-04-04 12:00 |
22:12:58.88 |
+07:08:22.6 |
HIP 109641 |
16.63 |
| 2026-04-05 00:00 |
22:12:59.65 |
+07:08:30.3 |
HIP 109641 |
16.56 |
| 2026-04-05 12:00 |
22:13:00.42 |
+07:08:37.9 |
HIP 109641 |
16.51 |
| 2026-04-06 00:00 |
22:13:01.18 |
+07:08:45.5 |
HIP 109641 |
16.45 |
| 2026-04-06 12:00 |
22:13:01.94 |
+07:08:53.1 |
HIP 109641 |
16.40 |
| 2026-04-07 00:00 |
22:13:02.69 |
+07:09:00.8 |
HIP 109641 |
16.35 |
| 2026-04-07 12:00 |
22:13:03.43 |
+07:09:08.4 |
HIP 109641 |
16.30 |
| 2026-04-08 00:00 |
22:13:04.17 |
+07:09:16.0 |
HIP 109641 |
16.25 |
| 2026-04-08 12:00 |
22:13:04.90 |
+07:09:23.6 |
HIP 109641 |
16.21 |
| 2026-04-09 00:00 |
22:13:05.62 |
+07:09:31.2 |
HIP 109641 |
16.17 |
| 2026-04-09 12:00 |
22:13:06.34 |
+07:09:38.9 |
HIP 109641 |
16.13 |
| 2026-04-10 00:00 |
22:13:07.05 |
+07:09:46.5 |
HIP 109641 |
16.09 |
| 2026-04-10 12:00 |
22:13:07.75 |
+07:09:54.1 |
HIP 109641 |
16.06 |
| 2026-04-11 00:00 |
22:13:08.45 |
+07:10:01.6 |
HIP 109641 |
16.03 |
| 2026-04-11 12:00 |
22:13:09.14 |
+07:10:09.2 |
HIP 109641 |
16.00 |
| 2026-04-12 00:00 |
22:13:09.83 |
+07:10:16.8 |
HIP 109641 |
15.97 |
| 2026-04-12 12:00 |
22:13:10.51 |
+07:10:24.4 |
HIP 109641 |
15.94 |
| 2026-04-13 00:00 |
22:13:11.18 |
+07:10:31.9 |
HIP 109641 |
15.92 |
| 2026-04-13 12:00 |
22:13:11.84 |
+07:10:39.5 |
HIP 109641 |
15.90 |
| 2026-04-14 00:00 |
22:13:12.50 |
+07:10:47.0 |
HIP 109641 |
15.88 |
| 2026-04-14 12:00 |
22:13:13.15 |
+07:10:54.6 |
HIP 109641 |
15.86 |
| 2026-04-15 00:00 |
22:13:13.79 |
+07:11:02.1 |
HIP 109641 |
15.84 |
| 2026-04-15 12:00 |
22:13:14.42 |
+07:11:09.6 |
HIP 109641 |
15.83 |
| 2026-04-16 00:00 |
22:13:15.05 |
+07:11:17.1 |
HIP 109641 |
15.81 |