428P/Gibbs
メタデータ
| 項目 |
値 |
| Designation |
428P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2014-11-14T13:43:38.052480Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:57Z |
| Obs used |
130 |
| NEO |
- |
| M1 |
11.700 |
| K1 |
22.750 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2021-08-16T03:08:49.632000Z |
| Discovery magnitude (MPC) |
20.00 T |
| Discovery observatory (MPC) |
Z84 · Calar Alto-Schmidt |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2017-07-29.0000000 |
| e |
0.51895674 |
| q (au) |
1.675591 |
| a (au) |
3.483245 |
| i (deg) |
8.514132 |
| Ω (om, deg) |
299.322409 |
| ω (w, deg) |
36.937480 |
| M (ma, deg) |
149.704035 |
等級
散乱 + 全体線形
$$
M_a = (14.349 + 5.458\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.349 |
| n |
5.458 |
| gf |
0.999 |
| gb |
-0.874 |
| k |
0.999 |
| δ90 |
9.999 |
| 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) |
| 2026-02-03 00:00 |
13:05:37.52 |
-16:39:50.8 |
HIP 63872 |
20.58 |
| 2026-02-03 12:00 |
13:05:35.81 |
-16:40:54.7 |
HIP 63872 |
19.47 |
| 2026-02-04 00:00 |
13:05:33.88 |
-16:41:57.3 |
HIP 63872 |
18.38 |
| 2026-02-04 12:00 |
13:05:31.71 |
-16:42:58.6 |
HIP 63872 |
17.32 |
| 2026-02-05 00:00 |
13:05:29.31 |
-16:43:58.6 |
HIP 63872 |
16.30 |
| 2026-02-05 12:00 |
13:05:26.69 |
-16:44:57.3 |
HIP 63872 |
15.31 |
| 2026-02-06 00:00 |
13:05:23.82 |
-16:45:54.6 |
HIP 63872 |
14.37 |
| 2026-02-06 12:00 |
13:05:20.73 |
-16:46:50.5 |
HIP 63872 |
13.50 |
| 2026-02-07 00:00 |
13:05:17.40 |
-16:47:45.1 |
HIP 63872 |
12.71 |
| 2026-02-07 12:00 |
13:05:13.83 |
-16:48:38.3 |
HIP 63872 |
12.03 |
| 2026-02-08 00:00 |
13:05:10.04 |
-16:49:30.1 |
HIP 63872 |
11.49 |
| 2026-02-08 12:00 |
13:05:06.00 |
-16:50:20.5 |
HIP 63872 |
11.10 |
| 2026-02-09 00:00 |
13:05:01.73 |
-16:51:09.5 |
HIP 63872 |
10.90 |
| 2026-02-09 12:00 |
13:04:57.23 |
-16:51:57.0 |
HIP 63872 |
10.92 |
| 2026-02-10 00:00 |
13:04:52.49 |
-16:52:43.2 |
HIP 63872 |
11.15 |
| 2026-02-10 12:00 |
13:04:47.51 |
-16:53:27.9 |
HIP 63872 |
11.60 |
| 2026-02-11 00:00 |
13:04:42.30 |
-16:54:11.1 |
HIP 63872 |
12.26 |
| 2026-02-11 12:00 |
13:04:36.85 |
-16:54:52.9 |
HIP 63872 |
13.11 |
| 2026-02-12 00:00 |
13:04:31.16 |
-16:55:33.2 |
HIP 63872 |
14.12 |
| 2026-02-12 12:00 |
13:04:25.24 |
-16:56:12.1 |
HIP 63872 |
15.28 |
| 2026-02-13 00:00 |
13:04:19.08 |
-16:56:49.4 |
HIP 63872 |
16.56 |
| 2026-02-13 12:00 |
13:04:12.68 |
-16:57:25.3 |
HIP 63775 |
16.89 |
| 2026-02-14 00:00 |
13:04:06.04 |
-16:57:59.6 |
HIP 63775 |
16.55 |
| 2026-02-14 12:00 |
13:03:59.17 |
-16:58:32.5 |
HIP 63672 |
15.80 |
| 2026-02-15 00:00 |
13:03:52.06 |
-16:59:03.8 |
HIP 63672 |
14.44 |
| 2026-02-15 12:00 |
13:03:44.72 |
-16:59:33.5 |
HIP 63672 |
13.12 |
| 2026-02-16 00:00 |
13:03:37.14 |
-17:00:01.8 |
HIP 63672 |
11.87 |
| 2026-02-16 12:00 |
13:03:29.32 |
-17:00:28.4 |
HIP 63672 |
10.75 |
| 2026-02-17 00:00 |
13:03:21.27 |
-17:00:53.6 |
HIP 63672 |
9.82 |
| 2026-02-17 12:00 |
13:03:12.98 |
-17:01:17.1 |
HIP 63672 |
9.18 |
| 2026-02-18 00:00 |
13:03:04.46 |
-17:01:39.1 |
HIP 63672 |
8.93 |
| 2026-02-18 12:00 |
13:02:55.70 |
-17:01:59.5 |
HIP 63672 |
9.12 |
| 2026-02-19 00:00 |
13:02:46.71 |
-17:02:18.3 |
HIP 63672 |
9.77 |
| 2026-02-19 12:00 |
13:02:37.49 |
-17:02:35.5 |
HIP 63672 |
10.83 |
| 2026-02-20 00:00 |
13:02:28.03 |
-17:02:51.1 |
HIP 63672 |
12.21 |
| 2026-02-20 12:00 |
13:02:18.35 |
-17:03:05.1 |
HIP 63672 |
13.85 |
| 2026-02-21 00:00 |
13:02:08.43 |
-17:03:17.5 |
HIP 63672 |
15.69 |
| 2026-02-21 12:00 |
13:01:58.28 |
-17:03:28.3 |
HIP 63672 |
17.68 |
| 2026-02-22 00:00 |
13:01:47.91 |
-17:03:37.4 |
HIP 63672 |
19.81 |
| 2026-02-22 12:00 |
13:01:37.31 |
-17:03:45.0 |
HIP 63672 |
22.04 |
| 2026-02-23 00:00 |
13:01:26.48 |
-17:03:50.8 |
HIP 63672 |
24.37 |
| 2026-02-23 12:00 |
13:01:15.43 |
-17:03:55.1 |
HIP 63672 |
26.79 |
| 2026-02-24 00:00 |
13:01:04.15 |
-17:03:57.7 |
HIP 63672 |
29.28 |