メタデータ
| 項目 |
値 |
| Designation |
P/2012 T3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-04-27T22:19:16.250880Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:23Z |
| Obs used |
34 |
| NEO |
- |
| M1 |
14.900 |
| 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) |
2012-10-15.0000000 |
| e |
0.60453490 |
| q (au) |
2.383874 |
| a (au) |
6.028027 |
| i (deg) |
9.509712 |
| Ω (om, deg) |
114.259697 |
| ω (w, deg) |
196.802529 |
| M (ma, deg) |
11.325800 |
等級
散乱 + 全体線形
$$
M_a = (16.125 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.125 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.837 |
| 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
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) |
| 2026-06-01 00:00 |
15:50:54.08 |
-08:49:04.2 |
HIP 77563 |
38.35 |
| 2026-06-01 12:00 |
15:50:33.35 |
-08:49:00.2 |
HIP 77563 |
37.21 |
| 2026-06-02 00:00 |
15:50:12.67 |
-08:48:57.7 |
HIP 77563 |
36.73 |
| 2026-06-02 12:00 |
15:49:52.06 |
-08:48:56.6 |
HIP 77563 |
36.93 |
| 2026-06-03 00:00 |
15:49:31.52 |
-08:48:57.0 |
HIP 77563 |
37.79 |
| 2026-06-03 12:00 |
15:49:11.06 |
-08:48:58.8 |
HIP 77329 |
35.95 |
| 2026-06-04 00:00 |
15:48:50.68 |
-08:49:02.1 |
HIP 77329 |
32.13 |
| 2026-06-04 12:00 |
15:48:30.39 |
-08:49:07.0 |
HIP 77329 |
28.72 |
| 2026-06-05 00:00 |
15:48:10.18 |
-08:49:13.3 |
HIP 77262 |
25.41 |
| 2026-06-05 12:00 |
15:47:50.08 |
-08:49:21.2 |
HIP 77262 |
20.47 |
| 2026-06-06 00:00 |
15:47:30.08 |
-08:49:30.6 |
HIP 77262 |
15.57 |
| 2026-06-06 12:00 |
15:47:10.18 |
-08:49:41.5 |
HIP 77262 |
10.75 |
| 2026-06-07 00:00 |
15:46:50.40 |
-08:49:54.0 |
HIP 77262 |
6.12 |
| 2026-06-07 12:00 |
15:46:30.73 |
-08:50:08.0 |
HIP 77262 |
2.72 |
| 2026-06-08 00:00 |
15:46:11.19 |
-08:50:23.6 |
HIP 77262 |
4.95 |
| 2026-06-08 12:00 |
15:45:51.77 |
-08:50:40.8 |
HIP 77262 |
9.38 |
| 2026-06-09 00:00 |
15:45:32.49 |
-08:50:59.6 |
HIP 77262 |
14.04 |
| 2026-06-09 12:00 |
15:45:13.35 |
-08:51:20.0 |
HIP 77262 |
18.72 |
| 2026-06-10 00:00 |
15:44:54.34 |
-08:51:41.9 |
HIP 77262 |
23.40 |
| 2026-06-10 12:00 |
15:44:35.49 |
-08:52:05.5 |
HIP 77262 |
28.05 |
| 2026-06-11 00:00 |
15:44:16.79 |
-08:52:30.7 |
HIP 77033 |
27.55 |
| 2026-06-11 12:00 |
15:43:58.25 |
-08:52:57.6 |
HIP 77033 |
26.17 |
| 2026-06-12 00:00 |
15:43:39.88 |
-08:53:26.1 |
HIP 77033 |
25.52 |
| 2026-06-12 12:00 |
15:43:21.67 |
-08:53:56.2 |
HIP 77033 |
25.64 |
| 2026-06-13 00:00 |
15:43:03.63 |
-08:54:28.0 |
HIP 76868 |
24.51 |
| 2026-06-13 12:00 |
15:42:45.78 |
-08:55:01.4 |
HIP 76868 |
21.73 |
| 2026-06-14 00:00 |
15:42:28.11 |
-08:55:36.5 |
HIP 76868 |
19.62 |
| 2026-06-14 12:00 |
15:42:10.62 |
-08:56:13.3 |
HIP 76868 |
18.39 |
| 2026-06-15 00:00 |
15:41:53.33 |
-08:56:51.7 |
HIP 76804 |
14.63 |
| 2026-06-15 12:00 |
15:41:36.24 |
-08:57:31.8 |
HIP 76804 |
10.37 |
| 2026-06-16 00:00 |
15:41:19.35 |
-08:58:13.6 |
HIP 76804 |
6.15 |
| 2026-06-16 12:00 |
15:41:02.67 |
-08:58:57.1 |
HIP 76804 |
2.03 |
| 2026-06-17 00:00 |
15:40:46.20 |
-08:59:42.3 |
HIP 76804 |
2.27 |
| 2026-06-17 12:00 |
15:40:29.95 |
-09:00:29.1 |
HIP 76804 |
6.30 |
| 2026-06-18 00:00 |
15:40:13.92 |
-09:01:17.7 |
HIP 76804 |
10.33 |
| 2026-06-18 12:00 |
15:39:58.11 |
-09:02:07.9 |
HIP 76804 |
14.31 |
| 2026-06-19 00:00 |
15:39:42.54 |
-09:02:59.8 |
HIP 76804 |
18.25 |
| 2026-06-19 12:00 |
15:39:27.19 |
-09:03:53.4 |
HIP 76602 |
19.97 |
| 2026-06-20 00:00 |
15:39:12.08 |
-09:04:48.7 |
HIP 76602 |
18.88 |
| 2026-06-20 12:00 |
15:38:57.22 |
-09:05:45.7 |
HIP 76602 |
18.58 |
| 2026-06-21 00:00 |
15:38:42.59 |
-09:06:44.4 |
HIP 76517 |
16.45 |
| 2026-06-21 12:00 |
15:38:28.22 |
-09:07:44.7 |
HIP 76517 |
13.39 |
| 2026-06-22 00:00 |
15:38:14.09 |
-09:08:46.7 |
HIP 76517 |
10.79 |