メタデータ
| 項目 |
値 |
| Designation |
P/2016 R4 (Gibbs) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2016-07-20T12:01:25.501440Z |
| Orbit solution date (soln_date, UTC) |
2022-05-19T21:13:38Z |
| Obs used |
196 |
| NEO |
- |
| M1 |
15.600 |
| 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) |
2016-09-22.0000000 |
| e |
0.47506023 |
| q (au) |
2.800531 |
| a (au) |
5.334957 |
| i (deg) |
10.862086 |
| Ω (om, deg) |
168.346862 |
| ω (w, deg) |
174.058692 |
| M (ma, deg) |
5.078958 |
等級
散乱 + 全体線形
$$
M_a = (16.396 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.396 |
| n |
2.000 |
| gf |
0.832 |
| gb |
-0.660 |
| k |
0.898 |
| δ90 |
1.046 |
| 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) |
| 2026-03-26 00:00 |
14:30:34.09 |
-05:30:57.9 |
HIP 70973 |
18.41 |
| 2026-03-26 12:00 |
14:30:24.22 |
-05:29:20.7 |
HIP 70973 |
20.87 |
| 2026-03-27 00:00 |
14:30:14.22 |
-05:27:43.2 |
HIP 70973 |
23.47 |
| 2026-03-27 12:00 |
14:30:04.10 |
-05:26:05.4 |
HIP 70802 |
22.92 |
| 2026-03-28 00:00 |
14:29:53.84 |
-05:24:27.2 |
HIP 70802 |
19.89 |
| 2026-03-28 12:00 |
14:29:43.46 |
-05:22:48.8 |
HIP 70802 |
16.83 |
| 2026-03-29 00:00 |
14:29:32.96 |
-05:21:10.0 |
HIP 70802 |
13.75 |
| 2026-03-29 12:00 |
14:29:22.34 |
-05:19:30.9 |
HIP 70802 |
10.64 |
| 2026-03-30 00:00 |
14:29:11.59 |
-05:17:51.5 |
HIP 70802 |
7.51 |
| 2026-03-30 12:00 |
14:29:00.73 |
-05:16:11.8 |
HIP 70802 |
4.38 |
| 2026-03-31 00:00 |
14:28:49.75 |
-05:14:31.9 |
HIP 70802 |
1.46 |
| 2026-03-31 12:00 |
14:28:38.65 |
-05:12:51.7 |
HIP 70802 |
2.38 |
| 2026-04-01 00:00 |
14:28:27.43 |
-05:11:11.2 |
HIP 70802 |
5.51 |
| 2026-04-01 12:00 |
14:28:16.11 |
-05:09:30.6 |
HIP 70802 |
8.76 |
| 2026-04-02 00:00 |
14:28:04.67 |
-05:07:49.7 |
HIP 70802 |
12.06 |
| 2026-04-02 12:00 |
14:27:53.12 |
-05:06:08.6 |
HIP 70802 |
15.38 |
| 2026-04-03 00:00 |
14:27:41.46 |
-05:04:27.3 |
HIP 70623 |
14.60 |
| 2026-04-03 12:00 |
14:27:29.70 |
-05:02:45.8 |
HIP 70623 |
12.96 |
| 2026-04-04 00:00 |
14:27:17.83 |
-05:01:04.2 |
HIP 70623 |
12.06 |
| 2026-04-04 12:00 |
14:27:05.85 |
-04:59:22.3 |
HIP 70623 |
12.08 |
| 2026-04-05 00:00 |
14:26:53.78 |
-04:57:40.4 |
HIP 70623 |
13.04 |
| 2026-04-05 12:00 |
14:26:41.60 |
-04:55:58.3 |
HIP 70623 |
14.77 |
| 2026-04-06 00:00 |
14:26:29.32 |
-04:54:16.0 |
HIP 70623 |
17.05 |
| 2026-04-06 12:00 |
14:26:16.95 |
-04:52:33.7 |
HIP 70623 |
19.70 |
| 2026-04-07 00:00 |
14:26:04.48 |
-04:50:51.3 |
HIP 70623 |
22.61 |
| 2026-04-07 12:00 |
14:25:51.92 |
-04:49:08.7 |
HIP 70571 |
22.17 |
| 2026-04-08 00:00 |
14:25:39.26 |
-04:47:26.2 |
HIP 70571 |
21.28 |
| 2026-04-08 12:00 |
14:25:26.52 |
-04:45:43.5 |
HIP 70571 |
20.99 |
| 2026-04-09 00:00 |
14:25:13.68 |
-04:44:00.8 |
HIP 70571 |
21.34 |
| 2026-04-09 12:00 |
14:25:00.76 |
-04:42:18.1 |
HIP 70571 |
22.28 |
| 2026-04-10 00:00 |
14:24:47.76 |
-04:40:35.3 |
HIP 70571 |
23.78 |
| 2026-04-10 12:00 |
14:24:34.67 |
-04:38:52.5 |
HIP 70571 |
25.73 |
| 2026-04-11 00:00 |
14:24:21.50 |
-04:37:09.8 |
HIP 70571 |
28.05 |
| 2026-04-11 12:00 |
14:24:08.26 |
-04:35:27.1 |
HIP 70571 |
30.67 |
| 2026-04-12 00:00 |
14:23:54.93 |
-04:33:44.4 |
HIP 70571 |
33.51 |
| 2026-04-12 12:00 |
14:23:41.54 |
-04:32:01.7 |
HIP 70463 |
34.55 |
| 2026-04-13 00:00 |
14:23:28.06 |
-04:30:19.1 |
HIP 70161 |
33.47 |
| 2026-04-13 12:00 |
14:23:14.52 |
-04:28:36.6 |
HIP 70161 |
30.80 |
| 2026-04-14 00:00 |
14:23:00.91 |
-04:26:54.2 |
HIP 70161 |
28.37 |
| 2026-04-14 12:00 |
14:22:47.24 |
-04:25:11.9 |
HIP 70161 |
26.26 |
| 2026-04-15 00:00 |
14:22:33.49 |
-04:23:29.7 |
HIP 70161 |
24.54 |
| 2026-04-15 12:00 |
14:22:19.69 |
-04:21:47.7 |
HIP 70161 |
23.32 |
| 2026-04-16 00:00 |
14:22:05.83 |
-04:20:05.8 |
HIP 70161 |
22.68 |