メタデータ
| 項目 |
値 |
| Designation |
P/2023 Y2 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2023-08-09T20:11:11.523840Z |
| Orbit solution date (soln_date, UTC) |
2025-01-02T20:12:44Z |
| Obs used |
90 |
| NEO |
- |
| M1 |
11.800 |
| K1 |
17.750 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2023-12-17T11:22:10.185600Z |
| Discovery magnitude (MPC) |
19.40 G |
| Discovery observatory (MPC) |
G96 · University of Arizona Mt. Lemmon Survey |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2023-12-10.0000000 |
| e |
0.39215548 |
| q (au) |
2.275929 |
| a (au) |
3.744261 |
| i (deg) |
6.992785 |
| Ω (om, deg) |
79.230881 |
| ω (w, deg) |
16.802088 |
| M (ma, deg) |
16.618047 |
等級
散乱 + 全体線形
$$
M_a = (11.969 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.969 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| 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 |
17:07:50.01 |
-22:27:44.6 |
HIP 83662 |
34.74 |
| 2026-06-01 12:00 |
17:07:30.03 |
-22:27:38.2 |
HIP 83662 |
31.59 |
| 2026-06-02 00:00 |
17:07:10.01 |
-22:27:31.7 |
HIP 83662 |
28.84 |
| 2026-06-02 12:00 |
17:06:49.95 |
-22:27:25.0 |
HIP 83662 |
26.61 |
| 2026-06-03 00:00 |
17:06:29.86 |
-22:27:18.2 |
HIP 83662 |
25.05 |
| 2026-06-03 12:00 |
17:06:09.75 |
-22:27:11.2 |
HIP 83662 |
24.29 |
| 2026-06-04 00:00 |
17:05:49.61 |
-22:27:04.0 |
HIP 83629 |
23.14 |
| 2026-06-04 12:00 |
17:05:29.45 |
-22:26:56.7 |
HIP 83629 |
22.58 |
| 2026-06-05 00:00 |
17:05:09.27 |
-22:26:49.2 |
HIP 83629 |
22.98 |
| 2026-06-05 12:00 |
17:04:49.08 |
-22:26:41.5 |
HIP 83629 |
24.28 |
| 2026-06-06 00:00 |
17:04:28.88 |
-22:26:33.7 |
HIP 83629 |
26.36 |
| 2026-06-06 12:00 |
17:04:08.66 |
-22:26:25.8 |
HIP 83396 |
23.37 |
| 2026-06-07 00:00 |
17:03:48.44 |
-22:26:17.7 |
HIP 83396 |
19.58 |
| 2026-06-07 12:00 |
17:03:28.22 |
-22:26:09.5 |
HIP 83396 |
16.25 |
| 2026-06-08 00:00 |
17:03:08.01 |
-22:26:01.1 |
HIP 83396 |
13.73 |
| 2026-06-08 12:00 |
17:02:47.79 |
-22:25:52.6 |
HIP 83396 |
12.51 |
| 2026-06-09 00:00 |
17:02:27.58 |
-22:25:44.0 |
HIP 83396 |
12.97 |
| 2026-06-09 12:00 |
17:02:07.39 |
-22:25:35.2 |
HIP 83396 |
14.96 |
| 2026-06-10 00:00 |
17:01:47.21 |
-22:25:26.3 |
HIP 83396 |
17.96 |
| 2026-06-10 12:00 |
17:01:27.05 |
-22:25:17.4 |
HIP 83396 |
21.56 |
| 2026-06-11 00:00 |
17:01:06.91 |
-22:25:08.2 |
HIP 83211 |
20.17 |
| 2026-06-11 12:00 |
17:00:46.79 |
-22:24:59.0 |
HIP 83211 |
18.04 |
| 2026-06-12 00:00 |
17:00:26.70 |
-22:24:49.7 |
HIP 83211 |
16.95 |
| 2026-06-12 12:00 |
17:00:06.64 |
-22:24:40.3 |
HIP 83179 |
15.80 |
| 2026-06-13 00:00 |
16:59:46.62 |
-22:24:30.7 |
HIP 83179 |
15.92 |
| 2026-06-13 12:00 |
16:59:26.64 |
-22:24:21.1 |
HIP 83179 |
17.32 |
| 2026-06-14 00:00 |
16:59:06.69 |
-22:24:11.4 |
HIP 83179 |
19.72 |
| 2026-06-14 12:00 |
16:58:46.80 |
-22:24:01.6 |
HIP 83179 |
22.81 |
| 2026-06-15 00:00 |
16:58:26.95 |
-22:23:51.8 |
HIP 82986 |
19.73 |
| 2026-06-15 12:00 |
16:58:07.15 |
-22:23:41.9 |
HIP 82986 |
17.18 |
| 2026-06-16 00:00 |
16:57:47.41 |
-22:23:31.9 |
HIP 82986 |
15.60 |
| 2026-06-16 12:00 |
16:57:27.73 |
-22:23:21.8 |
HIP 82986 |
15.26 |
| 2026-06-17 00:00 |
16:57:08.11 |
-22:23:11.7 |
HIP 82986 |
16.24 |
| 2026-06-17 12:00 |
16:56:48.55 |
-22:23:01.5 |
HIP 82919 |
17.51 |
| 2026-06-18 00:00 |
16:56:29.07 |
-22:22:51.3 |
HIP 82919 |
17.81 |
| 2026-06-18 12:00 |
16:56:09.65 |
-22:22:41.1 |
HIP 82919 |
19.19 |
| 2026-06-19 00:00 |
16:55:50.32 |
-22:22:30.8 |
HIP 82919 |
21.43 |
| 2026-06-19 12:00 |
16:55:31.05 |
-22:22:20.5 |
HIP 82919 |
24.28 |
| 2026-06-20 00:00 |
16:55:11.87 |
-22:22:10.1 |
HIP 82919 |
27.54 |
| 2026-06-20 12:00 |
16:54:52.78 |
-22:21:59.8 |
HIP 82734 |
29.41 |
| 2026-06-21 00:00 |
16:54:33.77 |
-22:21:49.4 |
HIP 82734 |
29.07 |
| 2026-06-21 12:00 |
16:54:14.85 |
-22:21:39.0 |
HIP 82734 |
29.39 |
| 2026-06-22 00:00 |
16:53:56.03 |
-22:21:28.6 |
HIP 82734 |
30.33 |