メタデータ
| 項目 |
値 |
| Designation |
P/2007 Q2 (Gilmore) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-08-23T21:08:36.447360Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:11Z |
| Obs used |
146 |
| NEO |
- |
| M1 |
16.700 |
| K1 |
10.000 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2007-09-13.0000000 |
| e |
0.67122948 |
| q (au) |
1.839016 |
| a (au) |
5.593616 |
| i (deg) |
10.238439 |
| Ω (om, deg) |
172.248957 |
| ω (w, deg) |
163.150307 |
| M (ma, deg) |
1.498898 |
等級
散乱 + 全体線形
$$
M_a = (16.814 + 3.468\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.814 |
| n |
3.468 |
| gf |
0.979 |
| gb |
-1.000 |
| k |
1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
09:26:29.77 |
+10:31:36.3 |
HIP 46189 |
22.53 |
| 2026-06-01 12:00 |
09:26:36.39 |
+10:31:23.6 |
HIP 46189 |
24.03 |
| 2026-06-02 00:00 |
09:26:43.11 |
+10:31:10.3 |
HIP 46189 |
25.57 |
| 2026-06-02 12:00 |
09:26:49.90 |
+10:30:56.5 |
HIP 46431 |
26.07 |
| 2026-06-03 00:00 |
09:26:56.77 |
+10:30:42.3 |
HIP 46431 |
24.70 |
| 2026-06-03 12:00 |
09:27:03.72 |
+10:30:27.6 |
HIP 46431 |
23.35 |
| 2026-06-04 00:00 |
09:27:10.75 |
+10:30:12.4 |
HIP 46431 |
22.03 |
| 2026-06-04 12:00 |
09:27:17.86 |
+10:29:56.8 |
HIP 46431 |
20.77 |
| 2026-06-05 00:00 |
09:27:25.05 |
+10:29:40.7 |
HIP 46431 |
19.56 |
| 2026-06-05 12:00 |
09:27:32.31 |
+10:29:24.1 |
HIP 46431 |
18.43 |
| 2026-06-06 00:00 |
09:27:39.65 |
+10:29:07.1 |
HIP 46431 |
17.40 |
| 2026-06-06 12:00 |
09:27:47.07 |
+10:28:49.5 |
HIP 46431 |
16.50 |
| 2026-06-07 00:00 |
09:27:54.57 |
+10:28:31.6 |
HIP 46431 |
15.75 |
| 2026-06-07 12:00 |
09:28:02.14 |
+10:28:13.1 |
HIP 46431 |
15.19 |
| 2026-06-08 00:00 |
09:28:09.79 |
+10:27:54.2 |
HIP 46431 |
14.84 |
| 2026-06-08 12:00 |
09:28:17.52 |
+10:27:34.8 |
HIP 46431 |
14.73 |
| 2026-06-09 00:00 |
09:28:25.31 |
+10:27:15.0 |
HIP 46431 |
14.86 |
| 2026-06-09 12:00 |
09:28:33.19 |
+10:26:54.7 |
HIP 46431 |
15.25 |
| 2026-06-10 00:00 |
09:28:41.13 |
+10:26:33.9 |
HIP 46431 |
15.87 |
| 2026-06-10 12:00 |
09:28:49.15 |
+10:26:12.7 |
HIP 46431 |
16.72 |
| 2026-06-11 00:00 |
09:28:57.25 |
+10:25:51.1 |
HIP 46431 |
17.76 |
| 2026-06-11 12:00 |
09:29:05.41 |
+10:25:28.9 |
HIP 46431 |
18.96 |
| 2026-06-12 00:00 |
09:29:13.65 |
+10:25:06.4 |
HIP 46431 |
20.31 |
| 2026-06-12 12:00 |
09:29:21.96 |
+10:24:43.3 |
HIP 46634 |
21.23 |
| 2026-06-13 00:00 |
09:29:30.33 |
+10:24:19.8 |
HIP 46634 |
19.74 |
| 2026-06-13 12:00 |
09:29:38.78 |
+10:23:55.9 |
HIP 46634 |
18.37 |
| 2026-06-14 00:00 |
09:29:47.30 |
+10:23:31.5 |
HIP 46634 |
17.14 |
| 2026-06-14 12:00 |
09:29:55.89 |
+10:23:06.7 |
HIP 46634 |
16.09 |
| 2026-06-15 00:00 |
09:30:04.55 |
+10:22:41.5 |
HIP 46634 |
15.28 |
| 2026-06-15 12:00 |
09:30:13.27 |
+10:22:15.8 |
HIP 46634 |
14.75 |
| 2026-06-16 00:00 |
09:30:22.07 |
+10:21:49.6 |
HIP 46634 |
14.53 |
| 2026-06-16 12:00 |
09:30:30.93 |
+10:21:23.0 |
HIP 46681 |
14.19 |
| 2026-06-17 00:00 |
09:30:39.85 |
+10:20:56.0 |
HIP 46681 |
12.75 |
| 2026-06-17 12:00 |
09:30:48.84 |
+10:20:28.6 |
HIP 46681 |
11.56 |
| 2026-06-18 00:00 |
09:30:57.90 |
+10:20:00.7 |
HIP 46681 |
10.72 |
| 2026-06-18 12:00 |
09:31:07.02 |
+10:19:32.4 |
HIP 46681 |
10.31 |
| 2026-06-19 00:00 |
09:31:16.21 |
+10:19:03.6 |
HIP 46681 |
10.41 |
| 2026-06-19 12:00 |
09:31:25.46 |
+10:18:34.5 |
HIP 46681 |
11.00 |
| 2026-06-20 00:00 |
09:31:34.77 |
+10:18:04.9 |
HIP 46681 |
12.02 |
| 2026-06-20 12:00 |
09:31:44.14 |
+10:17:34.9 |
HIP 46681 |
13.39 |
| 2026-06-21 00:00 |
09:31:53.58 |
+10:17:04.5 |
HIP 46681 |
15.02 |
| 2026-06-21 12:00 |
09:32:03.07 |
+10:16:33.7 |
HIP 46681 |
16.84 |
| 2026-06-22 00:00 |
09:32:12.63 |
+10:16:02.4 |
HIP 46681 |
18.80 |