263P/Gibbs
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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-02-03 00:00 |
21:59:34.57 |
-19:11:22.0 |
HIP 108708 |
24.75 |
| 2026-02-03 12:00 |
22:00:00.92 |
-19:09:10.7 |
HIP 108708 |
19.87 |
| 2026-02-04 00:00 |
22:00:27.28 |
-19:06:59.3 |
HIP 108708 |
16.24 |
| 2026-02-04 12:00 |
22:00:53.67 |
-19:04:47.9 |
HIP 108739 |
11.23 |
| 2026-02-05 00:00 |
22:01:20.08 |
-19:02:36.3 |
HIP 108739 |
4.64 |
| 2026-02-05 12:00 |
22:01:46.50 |
-19:00:24.7 |
HIP 108739 |
2.11 |
| 2026-02-06 00:00 |
22:02:12.94 |
-18:58:13.0 |
HIP 108739 |
8.67 |
| 2026-02-06 12:00 |
22:02:39.40 |
-18:56:01.2 |
HIP 108739 |
15.29 |
| 2026-02-07 00:00 |
22:03:05.87 |
-18:53:49.4 |
HIP 108739 |
21.92 |
| 2026-02-07 12:00 |
22:03:32.36 |
-18:51:37.5 |
HIP 108999 |
22.89 |
| 2026-02-08 00:00 |
22:03:58.87 |
-18:49:25.6 |
HIP 108999 |
19.69 |
| 2026-02-08 12:00 |
22:04:25.38 |
-18:47:13.6 |
HIP 108999 |
18.44 |
| 2026-02-09 00:00 |
22:04:51.92 |
-18:45:01.6 |
HIP 109077 |
14.20 |
| 2026-02-09 12:00 |
22:05:18.46 |
-18:42:49.5 |
HIP 109077 |
7.54 |
| 2026-02-10 00:00 |
22:05:45.02 |
-18:40:37.4 |
HIP 109077 |
0.91 |
| 2026-02-10 12:00 |
22:06:11.59 |
-18:38:25.3 |
HIP 109077 |
5.80 |
| 2026-02-11 00:00 |
22:06:38.17 |
-18:36:13.1 |
HIP 109077 |
12.47 |
| 2026-02-11 12:00 |
22:07:04.76 |
-18:34:00.9 |
HIP 109077 |
19.14 |
| 2026-02-12 00:00 |
22:07:31.36 |
-18:31:48.7 |
HIP 109332 |
20.78 |
| 2026-02-12 12:00 |
22:07:57.97 |
-18:29:36.4 |
HIP 109332 |
14.55 |
| 2026-02-13 00:00 |
22:08:24.59 |
-18:27:24.2 |
HIP 109332 |
8.99 |
| 2026-02-13 12:00 |
22:08:51.21 |
-18:25:12.0 |
HIP 109344 |
5.28 |
| 2026-02-14 00:00 |
22:09:17.85 |
-18:22:59.7 |
HIP 109344 |
6.70 |
| 2026-02-14 12:00 |
22:09:44.48 |
-18:20:47.5 |
HIP 109344 |
12.30 |
| 2026-02-15 00:00 |
22:10:11.13 |
-18:18:35.2 |
HIP 109344 |
18.64 |
| 2026-02-15 12:00 |
22:10:37.77 |
-18:16:23.0 |
HIP 109344 |
25.17 |
| 2026-02-16 00:00 |
22:11:04.43 |
-18:14:10.8 |
HIP 109634 |
24.53 |
| 2026-02-16 12:00 |
22:11:31.08 |
-18:11:58.6 |
HIP 109634 |
18.01 |
| 2026-02-17 00:00 |
22:11:57.74 |
-18:09:46.4 |
HIP 109634 |
11.71 |
| 2026-02-17 12:00 |
22:12:24.40 |
-18:07:34.3 |
HIP 109634 |
6.29 |
| 2026-02-18 00:00 |
22:12:51.06 |
-18:05:22.2 |
HIP 109634 |
5.67 |
| 2026-02-18 12:00 |
22:13:17.72 |
-18:03:10.2 |
HIP 109634 |
10.71 |
| 2026-02-19 00:00 |
22:13:44.38 |
-18:00:58.2 |
HIP 109634 |
16.95 |
| 2026-02-19 12:00 |
22:14:11.04 |
-17:58:46.2 |
HIP 109634 |
23.46 |
| 2026-02-20 00:00 |
22:14:37.69 |
-17:56:34.3 |
HIP 109918 |
19.94 |
| 2026-02-20 12:00 |
22:15:04.35 |
-17:54:22.5 |
HIP 109918 |
17.17 |
| 2026-02-21 00:00 |
22:15:31.00 |
-17:52:10.8 |
HIP 109918 |
16.79 |
| 2026-02-21 12:00 |
22:15:57.64 |
-17:49:59.1 |
HIP 109918 |
18.94 |
| 2026-02-22 00:00 |
22:16:24.28 |
-17:47:47.5 |
HIP 109918 |
22.92 |
| 2026-02-22 12:00 |
22:16:50.92 |
-17:45:36.0 |
HIP 110063 |
26.08 |
| 2026-02-23 00:00 |
22:17:17.55 |
-17:43:24.6 |
HIP 110063 |
26.55 |
| 2026-02-23 12:00 |
22:17:44.17 |
-17:41:13.3 |
HIP 110063 |
28.62 |
| 2026-02-24 00:00 |
22:18:10.78 |
-17:39:02.0 |
HIP 110063 |
31.99 |