メタデータ
| 項目 |
値 |
| Designation |
263P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-09-29T21:29:30.344640Z |
| Orbit solution date (soln_date, UTC) |
2024-06-06T23:12:48Z |
| Obs used |
771 |
| NEO |
Yes |
| M1 |
18.600 |
| K1 |
4.500 |
| PC |
- |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2018-10-22.0000000 |
| e |
0.58779281 |
| q (au) |
1.261487 |
| a (au) |
3.060323 |
| i (deg) |
11.538377 |
| Ω (om, deg) |
105.807706 |
| ω (w, deg) |
34.574680 |
| M (ma, deg) |
71.265838 |
等級
散乱 + 全体線形
$$
M_a = (19.287 + 2.794\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
19.287 |
| n |
2.794 |
| gf |
1.000 |
| gb |
-0.690 |
| k |
0.800 |
| 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
ファインディングチャート
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-09-20 00:00 |
23:00:23.92 |
-19:53:43.5 |
HIP 113641 |
33.74 |
| 2026-09-20 12:00 |
23:00:02.11 |
-19:55:41.7 |
HIP 113399 |
30.05 |
| 2026-09-21 00:00 |
22:59:40.37 |
-19:57:38.2 |
HIP 113399 |
25.59 |
| 2026-09-21 12:00 |
22:59:18.72 |
-19:59:33.2 |
HIP 113399 |
21.59 |
| 2026-09-22 00:00 |
22:58:57.14 |
-20:01:26.4 |
HIP 113399 |
18.36 |
| 2026-09-22 12:00 |
22:58:35.65 |
-20:03:18.0 |
HIP 113399 |
16.31 |
| 2026-09-23 00:00 |
22:58:14.26 |
-20:05:07.9 |
HIP 113366 |
14.31 |
| 2026-09-23 12:00 |
22:57:52.95 |
-20:06:56.1 |
HIP 113366 |
10.24 |
| 2026-09-24 00:00 |
22:57:31.74 |
-20:08:42.5 |
HIP 113366 |
7.86 |
| 2026-09-24 12:00 |
22:57:10.63 |
-20:10:27.3 |
HIP 113366 |
8.64 |
| 2026-09-25 00:00 |
22:56:49.63 |
-20:12:10.3 |
HIP 113366 |
11.93 |
| 2026-09-25 12:00 |
22:56:28.73 |
-20:13:51.5 |
HIP 113204 |
14.71 |
| 2026-09-26 00:00 |
22:56:07.95 |
-20:15:31.0 |
HIP 113204 |
11.32 |
| 2026-09-26 12:00 |
22:55:47.28 |
-20:17:08.7 |
HIP 113204 |
9.62 |
| 2026-09-27 00:00 |
22:55:26.72 |
-20:18:44.7 |
HIP 113204 |
10.42 |
| 2026-09-27 12:00 |
22:55:06.29 |
-20:20:18.8 |
HIP 113204 |
13.24 |
| 2026-09-28 00:00 |
22:54:45.98 |
-20:21:51.2 |
HIP 113204 |
17.07 |
| 2026-09-28 12:00 |
22:54:25.80 |
-20:23:21.7 |
HIP 113204 |
21.35 |
| 2026-09-29 00:00 |
22:54:05.75 |
-20:24:50.4 |
HIP 113204 |
25.83 |
| 2026-09-29 12:00 |
22:53:45.84 |
-20:26:17.3 |
HIP 112962 |
27.28 |
| 2026-09-30 00:00 |
22:53:26.06 |
-20:27:42.4 |
HIP 112962 |
26.10 |
| 2026-09-30 12:00 |
22:53:06.42 |
-20:29:05.6 |
HIP 112962 |
25.78 |
| 2026-10-01 00:00 |
22:52:46.93 |
-20:30:27.0 |
HIP 112962 |
26.32 |
| 2026-10-01 12:00 |
22:52:27.58 |
-20:31:46.5 |
HIP 112886 |
27.13 |
| 2026-10-02 00:00 |
22:52:08.39 |
-20:33:04.2 |
HIP 112886 |
24.32 |
| 2026-10-02 12:00 |
22:51:49.34 |
-20:34:20.0 |
HIP 112886 |
22.18 |
| 2026-10-03 00:00 |
22:51:30.46 |
-20:35:33.9 |
HIP 112886 |
20.89 |
| 2026-10-03 12:00 |
22:51:11.73 |
-20:36:46.0 |
HIP 112886 |
20.58 |
| 2026-10-04 00:00 |
22:50:53.17 |
-20:37:56.1 |
HIP 112886 |
21.27 |
| 2026-10-04 12:00 |
22:50:34.77 |
-20:39:04.4 |
HIP 112886 |
22.84 |
| 2026-10-05 00:00 |
22:50:16.54 |
-20:40:10.7 |
HIP 112650 |
22.36 |
| 2026-10-05 12:00 |
22:49:58.48 |
-20:41:15.2 |
HIP 112650 |
19.47 |
| 2026-10-06 00:00 |
22:49:40.60 |
-20:42:17.7 |
HIP 112650 |
17.21 |
| 2026-10-06 12:00 |
22:49:22.90 |
-20:43:18.4 |
HIP 112650 |
15.82 |
| 2026-10-07 00:00 |
22:49:05.38 |
-20:44:17.1 |
HIP 112650 |
15.49 |
| 2026-10-07 12:00 |
22:48:48.04 |
-20:45:13.9 |
HIP 112650 |
16.25 |
| 2026-10-08 00:00 |
22:48:30.88 |
-20:46:08.8 |
HIP 112650 |
17.92 |
| 2026-10-08 12:00 |
22:48:13.92 |
-20:47:01.7 |
HIP 112462 |
19.56 |
| 2026-10-09 00:00 |
22:47:57.15 |
-20:47:52.7 |
HIP 112462 |
15.64 |
| 2026-10-09 12:00 |
22:47:40.57 |
-20:48:41.8 |
HIP 112462 |
11.83 |
| 2026-10-10 00:00 |
22:47:24.20 |
-20:49:29.0 |
HIP 112462 |
8.19 |
| 2026-10-10 12:00 |
22:47:08.02 |
-20:50:14.2 |
HIP 112462 |
5.01 |
| 2026-10-11 00:00 |
22:46:52.04 |
-20:50:57.5 |
HIP 112462 |
3.55 |