メタデータ
| 項目 |
値 |
| Designation |
C/1976 U1 (Lovas) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
1976-07-06T14:19:56.015040Z |
| Orbit solution date (soln_date, UTC) |
2023-08-28T01:42:39Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
6.200 |
| K1 |
9.000 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
1977-02-05.0000000 |
| e |
1.00366837 |
| q (au) |
5.857482 |
| a (au) |
-1596.751644 |
| i (deg) |
86.628655 |
| Ω (om, deg) |
286.041394 |
| ω (w, deg) |
118.810853 |
| M (ma, deg) |
0.003296 |
等級
散乱 + 全体線形
$$
M_a = (5.912 + 3.386\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
5.912 |
| n |
3.386 |
| gf |
0.986 |
| gb |
-0.975 |
| 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) |
| 2026-06-01 00:00 |
06:35:25.05 |
-62:07:13.3 |
HIP 31438 |
22.98 |
| 2026-06-01 12:00 |
06:35:28.13 |
-62:07:03.0 |
HIP 31438 |
23.17 |
| 2026-06-02 00:00 |
06:35:31.22 |
-62:06:52.9 |
HIP 31438 |
23.37 |
| 2026-06-02 12:00 |
06:35:34.32 |
-62:06:42.9 |
HIP 31438 |
23.57 |
| 2026-06-03 00:00 |
06:35:37.44 |
-62:06:33.2 |
HIP 31438 |
23.77 |
| 2026-06-03 12:00 |
06:35:40.57 |
-62:06:23.6 |
HIP 31438 |
23.97 |
| 2026-06-04 00:00 |
06:35:43.71 |
-62:06:14.2 |
HIP 31438 |
24.17 |
| 2026-06-04 12:00 |
06:35:46.87 |
-62:06:05.0 |
HIP 31438 |
24.38 |
| 2026-06-05 00:00 |
06:35:50.03 |
-62:05:56.0 |
HIP 31438 |
24.59 |
| 2026-06-05 12:00 |
06:35:53.21 |
-62:05:47.2 |
HIP 31438 |
24.80 |
| 2026-06-06 00:00 |
06:35:56.40 |
-62:05:38.5 |
HIP 31438 |
25.01 |
| 2026-06-06 12:00 |
06:35:59.60 |
-62:05:30.1 |
HIP 31438 |
25.22 |
| 2026-06-07 00:00 |
06:36:02.81 |
-62:05:21.8 |
HIP 31438 |
25.44 |
| 2026-06-07 12:00 |
06:36:06.03 |
-62:05:13.7 |
HIP 31438 |
25.66 |
| 2026-06-08 00:00 |
06:36:09.27 |
-62:05:05.9 |
HIP 31438 |
25.87 |
| 2026-06-08 12:00 |
06:36:12.51 |
-62:04:58.2 |
HIP 31438 |
26.09 |
| 2026-06-09 00:00 |
06:36:15.76 |
-62:04:50.7 |
HIP 31438 |
26.32 |
| 2026-06-09 12:00 |
06:36:19.02 |
-62:04:43.3 |
HIP 31438 |
26.54 |
| 2026-06-10 00:00 |
06:36:22.30 |
-62:04:36.2 |
HIP 31438 |
26.76 |
| 2026-06-10 12:00 |
06:36:25.58 |
-62:04:29.3 |
HIP 31438 |
26.99 |
| 2026-06-11 00:00 |
06:36:28.87 |
-62:04:22.5 |
HIP 31438 |
27.22 |
| 2026-06-11 12:00 |
06:36:32.17 |
-62:04:16.0 |
HIP 31438 |
27.44 |
| 2026-06-12 00:00 |
06:36:35.48 |
-62:04:09.6 |
HIP 31438 |
27.67 |
| 2026-06-12 12:00 |
06:36:38.80 |
-62:04:03.5 |
HIP 31438 |
27.90 |
| 2026-06-13 00:00 |
06:36:42.13 |
-62:03:57.5 |
HIP 31438 |
28.14 |
| 2026-06-13 12:00 |
06:36:45.46 |
-62:03:51.8 |
HIP 31438 |
28.37 |
| 2026-06-14 00:00 |
06:36:48.80 |
-62:03:46.2 |
HIP 31438 |
28.60 |
| 2026-06-14 12:00 |
06:36:52.15 |
-62:03:40.8 |
HIP 31438 |
28.84 |
| 2026-06-15 00:00 |
06:36:55.51 |
-62:03:35.6 |
HIP 31438 |
29.07 |
| 2026-06-15 12:00 |
06:36:58.88 |
-62:03:30.7 |
HIP 31438 |
29.31 |
| 2026-06-16 00:00 |
06:37:02.25 |
-62:03:25.9 |
HIP 31438 |
29.55 |
| 2026-06-16 12:00 |
06:37:05.63 |
-62:03:21.3 |
HIP 31438 |
29.78 |
| 2026-06-17 00:00 |
06:37:09.01 |
-62:03:16.9 |
HIP 31438 |
30.02 |
| 2026-06-17 12:00 |
06:37:12.40 |
-62:03:12.7 |
HIP 31438 |
30.26 |
| 2026-06-18 00:00 |
06:37:15.80 |
-62:03:08.8 |
HIP 31638 |
30.33 |
| 2026-06-18 12:00 |
06:37:19.20 |
-62:03:05.0 |
HIP 31638 |
30.27 |
| 2026-06-19 00:00 |
06:37:22.61 |
-62:03:01.4 |
HIP 31638 |
30.22 |
| 2026-06-19 12:00 |
06:37:26.02 |
-62:02:58.0 |
HIP 31638 |
30.18 |
| 2026-06-20 00:00 |
06:37:29.44 |
-62:02:54.8 |
HIP 31638 |
30.14 |
| 2026-06-20 12:00 |
06:37:32.86 |
-62:02:51.8 |
HIP 31638 |
30.12 |
| 2026-06-21 00:00 |
06:37:36.29 |
-62:02:49.1 |
HIP 31638 |
30.11 |
| 2026-06-21 12:00 |
06:37:39.72 |
-62:02:46.5 |
HIP 31638 |
30.10 |
| 2026-06-22 00:00 |
06:37:43.16 |
-62:02:44.1 |
HIP 31638 |
30.10 |