メタデータ
| 項目 |
値 |
| Designation |
P/2016 G1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2017-01-26T04:39:52.557120Z |
| Orbit solution date (soln_date, UTC) |
2021-08-06T00:42:46Z |
| Obs used |
147 |
| NEO |
- |
| M1 |
16.100 |
| 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) |
2016-04-30.0000000 |
| e |
0.21010208 |
| q (au) |
2.040494 |
| a (au) |
2.583238 |
| i (deg) |
10.967835 |
| Ω (om, deg) |
204.074723 |
| ω (w, deg) |
111.280022 |
| M (ma, deg) |
295.621914 |
等級
散乱 + 全体線形
$$
M_a = (15.642 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
15.642 |
| n |
2.000 |
| gf |
0.800 |
| gb |
-0.903 |
| k |
0.999 |
| δ90 |
1.000 |
| 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 |
07:17:56.63 |
+12:49:07.0 |
HIP 35234 |
45.25 |
| 2026-09-20 12:00 |
07:18:28.27 |
+12:46:29.5 |
HIP 35620 |
41.59 |
| 2026-09-21 00:00 |
07:18:59.72 |
+12:43:51.6 |
HIP 35620 |
36.32 |
| 2026-09-21 12:00 |
07:19:30.98 |
+12:41:13.1 |
HIP 35620 |
32.28 |
| 2026-09-22 00:00 |
07:20:02.04 |
+12:38:34.2 |
HIP 35620 |
29.94 |
| 2026-09-22 12:00 |
07:20:32.91 |
+12:35:54.8 |
HIP 35620 |
29.68 |
| 2026-09-23 00:00 |
07:21:03.58 |
+12:33:15.0 |
HIP 35620 |
31.51 |
| 2026-09-23 12:00 |
07:21:34.06 |
+12:30:34.6 |
HIP 35620 |
35.08 |
| 2026-09-24 00:00 |
07:22:04.34 |
+12:27:53.9 |
HIP 35784 |
35.57 |
| 2026-09-24 12:00 |
07:22:34.42 |
+12:25:12.6 |
HIP 35784 |
31.22 |
| 2026-09-25 00:00 |
07:23:04.30 |
+12:22:31.0 |
HIP 35784 |
28.38 |
| 2026-09-25 12:00 |
07:23:33.98 |
+12:19:48.9 |
HIP 35784 |
27.50 |
| 2026-09-26 00:00 |
07:24:03.45 |
+12:17:06.4 |
HIP 36027 |
21.14 |
| 2026-09-26 12:00 |
07:24:32.72 |
+12:14:23.5 |
HIP 36027 |
13.53 |
| 2026-09-27 00:00 |
07:25:01.79 |
+12:11:40.2 |
HIP 36027 |
6.08 |
| 2026-09-27 12:00 |
07:25:30.65 |
+12:08:56.6 |
HIP 36027 |
2.54 |
| 2026-09-28 00:00 |
07:25:59.30 |
+12:06:12.5 |
HIP 36027 |
9.46 |
| 2026-09-28 12:00 |
07:26:27.74 |
+12:03:28.0 |
HIP 36189 |
11.85 |
| 2026-09-29 00:00 |
07:26:55.97 |
+12:00:43.2 |
HIP 36189 |
4.69 |
| 2026-09-29 12:00 |
07:27:23.99 |
+11:57:58.0 |
HIP 36189 |
3.70 |
| 2026-09-30 00:00 |
07:27:51.80 |
+11:55:12.5 |
HIP 36189 |
10.65 |
| 2026-09-30 12:00 |
07:28:19.39 |
+11:52:26.6 |
HIP 36189 |
17.86 |
| 2026-10-01 00:00 |
07:28:46.76 |
+11:49:40.4 |
HIP 36374 |
16.12 |
| 2026-10-01 12:00 |
07:29:13.92 |
+11:46:53.9 |
HIP 36374 |
12.03 |
| 2026-10-02 00:00 |
07:29:40.85 |
+11:44:07.1 |
HIP 36374 |
11.51 |
| 2026-10-02 12:00 |
07:30:07.56 |
+11:41:19.9 |
HIP 36374 |
14.87 |
| 2026-10-03 00:00 |
07:30:34.05 |
+11:38:32.5 |
HIP 36374 |
20.22 |
| 2026-10-03 12:00 |
07:31:00.32 |
+11:35:44.8 |
HIP 36553 |
23.66 |
| 2026-10-04 00:00 |
07:31:26.35 |
+11:32:56.8 |
HIP 36553 |
21.21 |
| 2026-10-04 12:00 |
07:31:52.16 |
+11:30:08.5 |
HIP 36553 |
20.87 |
| 2026-10-05 00:00 |
07:32:17.74 |
+11:27:20.0 |
HIP 36752 |
18.48 |
| 2026-10-05 12:00 |
07:32:43.09 |
+11:24:31.3 |
HIP 36752 |
12.63 |
| 2026-10-06 00:00 |
07:33:08.20 |
+11:21:42.3 |
HIP 36752 |
8.44 |
| 2026-10-06 12:00 |
07:33:33.07 |
+11:18:53.1 |
HIP 36752 |
8.64 |
| 2026-10-07 00:00 |
07:33:57.71 |
+11:16:03.7 |
HIP 36752 |
12.95 |
| 2026-10-07 12:00 |
07:34:22.11 |
+11:13:14.2 |
HIP 36746 |
18.34 |
| 2026-10-08 00:00 |
07:34:46.27 |
+11:10:24.4 |
HIP 36746 |
21.62 |
| 2026-10-08 12:00 |
07:35:10.18 |
+11:07:34.5 |
HIP 36810 |
22.81 |
| 2026-10-09 00:00 |
07:35:33.85 |
+11:04:44.4 |
HIP 36810 |
24.91 |
| 2026-10-09 12:00 |
07:35:57.28 |
+11:01:54.1 |
HIP 36810 |
28.31 |
| 2026-10-10 00:00 |
07:36:20.46 |
+10:59:03.8 |
HIP 37168 |
29.36 |
| 2026-10-10 12:00 |
07:36:43.38 |
+10:56:13.3 |
HIP 37168 |
25.08 |
| 2026-10-11 00:00 |
07:37:06.06 |
+10:53:22.7 |
HIP 37168 |
21.87 |