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) |
| 2026-09-20 00:00 |
18:51:10.46 |
-26:42:02.9 |
HIP 92463 |
8.46 |
| 2026-09-20 12:00 |
18:51:13.26 |
-26:41:49.0 |
HIP 92463 |
9.12 |
| 2026-09-21 00:00 |
18:51:16.28 |
-26:41:34.8 |
HIP 92463 |
9.82 |
| 2026-09-21 12:00 |
18:51:19.50 |
-26:41:20.3 |
HIP 92463 |
10.57 |
| 2026-09-22 00:00 |
18:51:22.93 |
-26:41:05.6 |
HIP 92463 |
11.37 |
| 2026-09-22 12:00 |
18:51:26.57 |
-26:40:50.6 |
HIP 92463 |
12.20 |
| 2026-09-23 00:00 |
18:51:30.42 |
-26:40:35.4 |
HIP 92635 |
13.03 |
| 2026-09-23 12:00 |
18:51:34.48 |
-26:40:19.9 |
HIP 92635 |
12.10 |
| 2026-09-24 00:00 |
18:51:38.74 |
-26:40:04.1 |
HIP 92635 |
11.12 |
| 2026-09-24 12:00 |
18:51:43.21 |
-26:39:48.1 |
HIP 92635 |
10.11 |
| 2026-09-25 00:00 |
18:51:47.88 |
-26:39:31.8 |
HIP 92635 |
9.05 |
| 2026-09-25 12:00 |
18:51:52.76 |
-26:39:15.3 |
HIP 92635 |
7.95 |
| 2026-09-26 00:00 |
18:51:57.84 |
-26:38:58.5 |
HIP 92635 |
6.81 |
| 2026-09-26 12:00 |
18:52:03.13 |
-26:38:41.5 |
HIP 92635 |
5.64 |
| 2026-09-27 00:00 |
18:52:08.61 |
-26:38:24.3 |
HIP 92635 |
4.45 |
| 2026-09-27 12:00 |
18:52:14.30 |
-26:38:06.7 |
HIP 92635 |
3.27 |
| 2026-09-28 00:00 |
18:52:20.19 |
-26:37:49.0 |
HIP 92635 |
2.19 |
| 2026-09-28 12:00 |
18:52:26.27 |
-26:37:31.0 |
HIP 92635 |
1.59 |
| 2026-09-29 00:00 |
18:52:32.56 |
-26:37:12.7 |
HIP 92635 |
2.06 |
| 2026-09-29 12:00 |
18:52:39.04 |
-26:36:54.2 |
HIP 92635 |
3.21 |
| 2026-09-30 00:00 |
18:52:45.72 |
-26:36:35.5 |
HIP 92635 |
4.60 |
| 2026-09-30 12:00 |
18:52:52.60 |
-26:36:16.5 |
HIP 92635 |
6.09 |
| 2026-10-01 00:00 |
18:52:59.67 |
-26:35:57.2 |
HIP 92635 |
7.66 |
| 2026-10-01 12:00 |
18:53:06.94 |
-26:35:37.8 |
HIP 92635 |
9.28 |
| 2026-10-02 00:00 |
18:53:14.40 |
-26:35:18.1 |
HIP 92635 |
10.96 |
| 2026-10-02 12:00 |
18:53:22.06 |
-26:34:58.1 |
HIP 92635 |
12.68 |
| 2026-10-03 00:00 |
18:53:29.90 |
-26:34:37.9 |
HIP 92635 |
14.45 |
| 2026-10-03 12:00 |
18:53:37.94 |
-26:34:17.5 |
HIP 92635 |
16.27 |
| 2026-10-04 00:00 |
18:53:46.18 |
-26:33:56.8 |
HIP 92635 |
18.13 |
| 2026-10-04 12:00 |
18:53:54.60 |
-26:33:35.9 |
HIP 92635 |
20.04 |
| 2026-10-05 00:00 |
18:54:03.21 |
-26:33:14.8 |
HIP 92808 |
21.61 |
| 2026-10-05 12:00 |
18:54:12.01 |
-26:32:53.4 |
HIP 92855 |
20.80 |
| 2026-10-06 00:00 |
18:54:21.00 |
-26:32:31.8 |
HIP 92855 |
19.19 |
| 2026-10-06 12:00 |
18:54:30.18 |
-26:32:09.9 |
HIP 92855 |
17.65 |
| 2026-10-07 00:00 |
18:54:39.54 |
-26:31:47.8 |
HIP 92855 |
16.20 |
| 2026-10-07 12:00 |
18:54:49.09 |
-26:31:25.5 |
HIP 92855 |
14.89 |
| 2026-10-08 00:00 |
18:54:58.83 |
-26:31:02.9 |
HIP 92855 |
13.79 |
| 2026-10-08 12:00 |
18:55:08.75 |
-26:30:40.1 |
HIP 92855 |
12.97 |
| 2026-10-09 00:00 |
18:55:18.85 |
-26:30:17.0 |
HIP 92855 |
12.50 |
| 2026-10-09 12:00 |
18:55:29.13 |
-26:29:53.7 |
HIP 92855 |
12.46 |
| 2026-10-10 00:00 |
18:55:39.60 |
-26:29:30.2 |
HIP 92855 |
12.85 |
| 2026-10-10 12:00 |
18:55:50.25 |
-26:29:06.4 |
HIP 92855 |
13.68 |
| 2026-10-11 00:00 |
18:56:01.08 |
-26:28:42.4 |
HIP 92855 |
14.88 |