メタデータ
| 項目 |
値 |
| Designation |
229P/Gibbs |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-05-20T22:45:24.773760Z |
| Orbit solution date (soln_date, UTC) |
2025-07-31T12:12:41Z |
| Obs used |
293 |
| NEO |
- |
| M1 |
13.900 |
| K1 |
9.250 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2015-10-15.0000000 |
| e |
0.37605919 |
| q (au) |
2.454753 |
| a (au) |
3.934273 |
| i (deg) |
26.069392 |
| Ω (om, deg) |
157.911010 |
| ω (w, deg) |
224.219557 |
| M (ma, deg) |
286.246652 |
等級
散乱 + 全体線形
$$
M_a = (11.598 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
11.598 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.822 |
| k |
0.997 |
| δ90 |
9.964 |
| 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) |
| 2026-05-12 00:00 |
07:14:28.43 |
+08:23:20.7 |
HIP 34903 |
20.18 |
| 2026-05-12 12:00 |
07:15:00.85 |
+08:24:55.7 |
HIP 35008 |
23.90 |
| 2026-05-13 00:00 |
07:15:33.36 |
+08:26:29.3 |
HIP 35120 |
27.87 |
| 2026-05-13 12:00 |
07:16:05.95 |
+08:28:01.6 |
HIP 35215 |
24.14 |
| 2026-05-14 00:00 |
07:16:38.62 |
+08:29:32.4 |
HIP 35215 |
21.13 |
| 2026-05-14 12:00 |
07:17:11.37 |
+08:31:01.8 |
HIP 35215 |
21.14 |
| 2026-05-15 00:00 |
07:17:44.20 |
+08:32:29.9 |
HIP 35419 |
15.68 |
| 2026-05-15 12:00 |
07:18:17.10 |
+08:33:56.5 |
HIP 35419 |
8.61 |
| 2026-05-16 00:00 |
07:18:50.08 |
+08:35:21.7 |
HIP 35419 |
6.22 |
| 2026-05-16 12:00 |
07:19:23.13 |
+08:36:45.6 |
HIP 35419 |
11.84 |
| 2026-05-17 00:00 |
07:19:56.26 |
+08:38:08.1 |
HIP 35419 |
19.48 |
| 2026-05-17 12:00 |
07:20:29.46 |
+08:39:29.1 |
HIP 35419 |
27.51 |
| 2026-05-18 00:00 |
07:21:02.73 |
+08:40:48.8 |
HIP 35756 |
23.47 |
| 2026-05-18 12:00 |
07:21:36.06 |
+08:42:07.2 |
HIP 35756 |
15.41 |
| 2026-05-19 00:00 |
07:22:09.47 |
+08:43:24.1 |
HIP 35756 |
7.97 |
| 2026-05-19 12:00 |
07:22:42.95 |
+08:44:39.7 |
HIP 35756 |
5.41 |
| 2026-05-20 00:00 |
07:23:16.49 |
+08:45:54.0 |
HIP 35756 |
11.64 |
| 2026-05-20 12:00 |
07:23:50.10 |
+08:47:06.9 |
HIP 35915 |
8.97 |
| 2026-05-21 00:00 |
07:24:23.77 |
+08:48:18.4 |
HIP 35915 |
6.06 |
| 2026-05-21 12:00 |
07:24:57.50 |
+08:49:28.6 |
HIP 36005 |
6.36 |
| 2026-05-22 00:00 |
07:25:31.30 |
+08:50:37.4 |
HIP 36005 |
7.41 |
| 2026-05-22 12:00 |
07:26:05.16 |
+08:51:44.9 |
HIP 36005 |
14.54 |
| 2026-05-23 00:00 |
07:26:39.07 |
+08:52:51.1 |
HIP 36205 |
13.21 |
| 2026-05-23 12:00 |
07:27:13.05 |
+08:53:55.9 |
HIP 36205 |
9.02 |
| 2026-05-24 00:00 |
07:27:47.08 |
+08:54:59.4 |
HIP 36284 |
5.64 |
| 2026-05-24 12:00 |
07:28:21.17 |
+08:56:01.6 |
HIP 36284 |
2.84 |
| 2026-05-25 00:00 |
07:28:55.31 |
+08:57:02.5 |
HIP 36284 |
11.33 |
| 2026-05-25 12:00 |
07:29:29.51 |
+08:58:02.1 |
HIP 36284 |
19.84 |
| 2026-05-26 00:00 |
07:30:03.76 |
+08:59:00.3 |
HIP 36620 |
28.19 |
| 2026-05-26 12:00 |
07:30:38.07 |
+08:59:57.3 |
HIP 36620 |
20.99 |
| 2026-05-27 00:00 |
07:31:12.43 |
+09:00:53.0 |
HIP 36620 |
15.20 |
| 2026-05-27 12:00 |
07:31:46.83 |
+09:01:47.4 |
HIP 36620 |
12.91 |
| 2026-05-28 00:00 |
07:32:21.29 |
+09:02:40.5 |
HIP 36620 |
15.75 |
| 2026-05-28 12:00 |
07:32:55.80 |
+09:03:32.3 |
HIP 36733 |
17.10 |
| 2026-05-29 00:00 |
07:33:30.35 |
+09:04:22.9 |
HIP 36733 |
15.41 |
| 2026-05-29 12:00 |
07:34:04.96 |
+09:05:12.1 |
HIP 36733 |
18.18 |
| 2026-05-30 00:00 |
07:34:39.61 |
+09:06:00.1 |
HIP 36733 |
23.90 |
| 2026-05-30 12:00 |
07:35:14.30 |
+09:06:46.9 |
HIP 37038 |
23.94 |
| 2026-05-31 00:00 |
07:35:49.04 |
+09:07:32.4 |
HIP 37038 |
16.16 |
| 2026-05-31 12:00 |
07:36:23.83 |
+09:08:16.6 |
HIP 37038 |
9.86 |
| 2026-06-01 00:00 |
07:36:58.65 |
+09:08:59.6 |
HIP 37038 |
9.07 |
| 2026-06-01 12:00 |
07:37:33.53 |
+09:09:41.4 |
HIP 37038 |
14.72 |
| 2026-06-02 00:00 |
07:38:08.44 |
+09:10:21.9 |
HIP 37258 |
20.51 |