メタデータ
| 項目 |
値 |
| Designation |
P/2023 Y1 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-11-29T17:56:43.405440Z |
| Orbit solution date (soln_date, UTC) |
2024-05-14T12:42:28Z |
| Obs used |
94 |
| NEO |
- |
| M1 |
16.500 |
| 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) |
2024-02-05.0000000 |
| e |
0.44505354 |
| q (au) |
2.079783 |
| a (au) |
3.747719 |
| i (deg) |
6.384063 |
| Ω (om, deg) |
78.857594 |
| ω (w, deg) |
51.430701 |
| M (ma, deg) |
9.136095 |
等級
散乱 + 全体線形
$$
M_a = (13.789 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
13.789 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.929 |
| 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) |
| 2026-03-26 00:00 |
19:35:05.91 |
-23:56:00.2 |
HIP 96274 |
8.57 |
| 2026-03-26 12:00 |
19:35:21.76 |
-23:55:50.3 |
HIP 96274 |
11.75 |
| 2026-03-27 00:00 |
19:35:37.44 |
-23:55:40.8 |
HIP 96274 |
15.10 |
| 2026-03-27 12:00 |
19:35:52.96 |
-23:55:31.6 |
HIP 96274 |
18.50 |
| 2026-03-28 00:00 |
19:36:08.31 |
-23:55:22.8 |
HIP 96274 |
21.91 |
| 2026-03-28 12:00 |
19:36:23.49 |
-23:55:14.4 |
HIP 96274 |
25.31 |
| 2026-03-29 00:00 |
19:36:38.50 |
-23:55:06.4 |
HIP 96274 |
28.70 |
| 2026-03-29 12:00 |
19:36:53.34 |
-23:54:58.7 |
HIP 96394 |
30.54 |
| 2026-03-30 00:00 |
19:37:08.01 |
-23:54:51.5 |
HIP 96394 |
32.23 |
| 2026-03-30 12:00 |
19:37:22.50 |
-23:54:44.7 |
HIP 96674 |
30.24 |
| 2026-03-31 00:00 |
19:37:36.83 |
-23:54:38.2 |
HIP 96674 |
27.58 |
| 2026-03-31 12:00 |
19:37:50.98 |
-23:54:32.2 |
HIP 96674 |
25.09 |
| 2026-04-01 00:00 |
19:38:04.96 |
-23:54:26.6 |
HIP 96674 |
22.81 |
| 2026-04-01 12:00 |
19:38:18.76 |
-23:54:21.4 |
HIP 96674 |
20.79 |
| 2026-04-02 00:00 |
19:38:32.39 |
-23:54:16.7 |
HIP 96674 |
19.09 |
| 2026-04-02 12:00 |
19:38:45.84 |
-23:54:12.3 |
HIP 96674 |
17.79 |
| 2026-04-03 00:00 |
19:38:59.11 |
-23:54:08.4 |
HIP 96674 |
16.95 |
| 2026-04-03 12:00 |
19:39:12.21 |
-23:54:04.9 |
HIP 96674 |
16.63 |
| 2026-04-04 00:00 |
19:39:25.13 |
-23:54:01.9 |
HIP 96674 |
16.82 |
| 2026-04-04 12:00 |
19:39:37.86 |
-23:53:59.3 |
HIP 96674 |
17.50 |
| 2026-04-05 00:00 |
19:39:50.42 |
-23:53:57.2 |
HIP 96674 |
18.59 |
| 2026-04-05 12:00 |
19:40:02.79 |
-23:53:55.5 |
HIP 96674 |
20.00 |
| 2026-04-06 00:00 |
19:40:14.98 |
-23:53:54.3 |
HIP 96838 |
18.72 |
| 2026-04-06 12:00 |
19:40:26.99 |
-23:53:53.5 |
HIP 96838 |
17.19 |
| 2026-04-07 00:00 |
19:40:38.81 |
-23:53:53.2 |
HIP 96838 |
16.00 |
| 2026-04-07 12:00 |
19:40:50.45 |
-23:53:53.4 |
HIP 96838 |
15.23 |
| 2026-04-08 00:00 |
19:41:01.90 |
-23:53:54.0 |
HIP 96838 |
14.90 |
| 2026-04-08 12:00 |
19:41:13.16 |
-23:53:55.2 |
HIP 96838 |
15.04 |
| 2026-04-09 00:00 |
19:41:24.24 |
-23:53:56.8 |
HIP 96838 |
15.60 |
| 2026-04-09 12:00 |
19:41:35.12 |
-23:53:58.9 |
HIP 96838 |
16.52 |
| 2026-04-10 00:00 |
19:41:45.82 |
-23:54:01.5 |
HIP 96838 |
17.73 |
| 2026-04-10 12:00 |
19:41:56.32 |
-23:54:04.6 |
HIP 96838 |
19.16 |
| 2026-04-11 00:00 |
19:42:06.64 |
-23:54:08.1 |
HIP 96838 |
20.74 |
| 2026-04-11 12:00 |
19:42:16.76 |
-23:54:12.2 |
HIP 96838 |
22.44 |
| 2026-04-12 00:00 |
19:42:26.68 |
-23:54:16.8 |
HIP 96838 |
24.21 |
| 2026-04-12 12:00 |
19:42:36.41 |
-23:54:22.0 |
HIP 96838 |
26.02 |
| 2026-04-13 00:00 |
19:42:45.95 |
-23:54:27.6 |
HIP 96838 |
27.87 |
| 2026-04-13 12:00 |
19:42:55.29 |
-23:54:33.7 |
HIP 96967 |
28.50 |
| 2026-04-14 00:00 |
19:43:04.43 |
-23:54:40.4 |
HIP 96967 |
28.77 |
| 2026-04-14 12:00 |
19:43:13.38 |
-23:54:47.6 |
HIP 96967 |
29.17 |
| 2026-04-15 00:00 |
19:43:22.12 |
-23:54:55.3 |
HIP 96967 |
29.67 |
| 2026-04-15 12:00 |
19:43:30.67 |
-23:55:03.6 |
HIP 96967 |
30.28 |
| 2026-04-16 00:00 |
19:43:39.01 |
-23:55:12.4 |
HIP 96967 |
30.96 |