436P/Garradd
メタデータ
| 項目 |
値 |
| Designation |
436P/Garradd |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2007-09-27T18:17:01.438080Z |
| Orbit solution date (soln_date, UTC) |
2022-12-08T23:43:50Z |
| Obs used |
113 |
| NEO |
- |
| M1 |
11.300 |
| K1 |
23.000 |
| PC |
0.030 |
| Discovery observation (MPC, UTC) |
2021-10-24T10:16:59.808000Z |
| Discovery magnitude (MPC) |
19.40 T |
| Discovery observatory (MPC) |
Q62 · iTelescope Observatory, Siding Spring |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2011-04-11.0000000 |
| e |
0.67183664 |
| q (au) |
1.923695 |
| a (au) |
5.862005 |
| i (deg) |
20.206219 |
| Ω (om, deg) |
87.397920 |
| ω (w, deg) |
283.069780 |
| M (ma, deg) |
89.668749 |
等級
散乱 + 全体線形
$$
M_a = (12.835 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.835 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.500 |
| k |
1.000 |
| 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 |
12:04:07.27 |
+23:32:44.6 |
HIP 59015 |
33.14 |
| 2026-02-03 12:00 |
12:03:59.93 |
+23:34:30.9 |
HIP 58850 |
32.77 |
| 2026-02-04 00:00 |
12:03:52.48 |
+23:36:17.1 |
HIP 58850 |
31.21 |
| 2026-02-04 12:00 |
12:03:44.92 |
+23:38:03.4 |
HIP 58850 |
29.76 |
| 2026-02-05 00:00 |
12:03:37.26 |
+23:39:49.7 |
HIP 58850 |
28.47 |
| 2026-02-05 12:00 |
12:03:29.50 |
+23:41:36.1 |
HIP 58850 |
27.35 |
| 2026-02-06 00:00 |
12:03:21.63 |
+23:43:22.4 |
HIP 58850 |
26.44 |
| 2026-02-06 12:00 |
12:03:13.66 |
+23:45:08.7 |
HIP 58850 |
25.75 |
| 2026-02-07 00:00 |
12:03:05.58 |
+23:46:55.0 |
HIP 58850 |
25.31 |
| 2026-02-07 12:00 |
12:02:57.41 |
+23:48:41.3 |
HIP 58850 |
25.15 |
| 2026-02-08 00:00 |
12:02:49.13 |
+23:50:27.5 |
HIP 58850 |
25.26 |
| 2026-02-08 12:00 |
12:02:40.75 |
+23:52:13.7 |
HIP 58850 |
25.65 |
| 2026-02-09 00:00 |
12:02:32.28 |
+23:53:59.7 |
HIP 58621 |
25.58 |
| 2026-02-09 12:00 |
12:02:23.70 |
+23:55:45.7 |
HIP 58621 |
22.95 |
| 2026-02-10 00:00 |
12:02:15.03 |
+23:57:31.6 |
HIP 58621 |
20.33 |
| 2026-02-10 12:00 |
12:02:06.26 |
+23:59:17.3 |
HIP 58621 |
17.69 |
| 2026-02-11 00:00 |
12:01:57.39 |
+24:01:03.0 |
HIP 58621 |
15.06 |
| 2026-02-11 12:00 |
12:01:48.43 |
+24:02:48.4 |
HIP 58621 |
12.44 |
| 2026-02-12 00:00 |
12:01:39.38 |
+24:04:33.8 |
HIP 58621 |
9.85 |
| 2026-02-12 12:00 |
12:01:30.24 |
+24:06:18.9 |
HIP 58621 |
7.34 |
| 2026-02-13 00:00 |
12:01:21.00 |
+24:08:03.9 |
HIP 58621 |
5.06 |
| 2026-02-13 12:00 |
12:01:11.67 |
+24:09:48.6 |
HIP 58621 |
3.52 |
| 2026-02-14 00:00 |
12:01:02.25 |
+24:11:33.2 |
HIP 58621 |
3.81 |
| 2026-02-14 12:00 |
12:00:52.75 |
+24:13:17.5 |
HIP 58621 |
5.67 |
| 2026-02-15 00:00 |
12:00:43.15 |
+24:15:01.6 |
HIP 58621 |
8.10 |
| 2026-02-15 12:00 |
12:00:33.48 |
+24:16:45.4 |
HIP 58621 |
10.72 |
| 2026-02-16 00:00 |
12:00:23.71 |
+24:18:29.0 |
HIP 58621 |
13.43 |
| 2026-02-16 12:00 |
12:00:13.86 |
+24:20:12.3 |
HIP 58621 |
16.19 |
| 2026-02-17 00:00 |
12:00:03.93 |
+24:21:55.3 |
HIP 58621 |
18.98 |
| 2026-02-17 12:00 |
11:59:53.92 |
+24:23:37.9 |
HIP 58454 |
16.78 |
| 2026-02-18 00:00 |
11:59:43.83 |
+24:25:20.3 |
HIP 58454 |
14.13 |
| 2026-02-18 12:00 |
11:59:33.66 |
+24:27:02.3 |
HIP 58454 |
11.58 |
| 2026-02-19 00:00 |
11:59:23.41 |
+24:28:44.0 |
HIP 58454 |
9.22 |
| 2026-02-19 12:00 |
11:59:13.09 |
+24:30:25.3 |
HIP 58454 |
7.26 |
| 2026-02-20 00:00 |
11:59:02.69 |
+24:32:06.2 |
HIP 58454 |
6.10 |
| 2026-02-20 12:00 |
11:58:52.22 |
+24:33:46.7 |
HIP 58454 |
6.23 |
| 2026-02-21 00:00 |
11:58:41.68 |
+24:35:26.8 |
HIP 58454 |
7.59 |
| 2026-02-21 12:00 |
11:58:31.06 |
+24:37:06.5 |
HIP 58454 |
9.68 |
| 2026-02-22 00:00 |
11:58:20.38 |
+24:38:45.8 |
HIP 58454 |
12.14 |
| 2026-02-22 12:00 |
11:58:09.63 |
+24:40:24.6 |
HIP 58454 |
14.79 |
| 2026-02-23 00:00 |
11:57:58.81 |
+24:42:02.9 |
HIP 58454 |
17.54 |
| 2026-02-23 12:00 |
11:57:47.93 |
+24:43:40.8 |
HIP 58454 |
20.37 |
| 2026-02-24 00:00 |
11:57:36.98 |
+24:45:18.2 |
HIP 58454 |
23.23 |