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) |
| 2026-09-20 00:00 |
16:20:48.74 |
-17:20:14.1 |
HIP 80072 |
15.71 |
| 2026-09-20 12:00 |
16:21:29.26 |
-17:23:32.0 |
HIP 80083 |
19.24 |
| 2026-09-21 00:00 |
16:22:10.02 |
-17:26:49.4 |
HIP 80083 |
24.47 |
| 2026-09-21 12:00 |
16:22:51.02 |
-17:30:06.4 |
HIP 80403 |
26.55 |
| 2026-09-22 00:00 |
16:23:32.24 |
-17:33:23.0 |
HIP 80403 |
16.48 |
| 2026-09-22 12:00 |
16:24:13.70 |
-17:36:39.1 |
HIP 80403 |
7.25 |
| 2026-09-23 00:00 |
16:24:55.39 |
-17:39:54.7 |
HIP 80403 |
7.10 |
| 2026-09-23 12:00 |
16:25:37.30 |
-17:43:09.8 |
HIP 80403 |
16.37 |
| 2026-09-24 00:00 |
16:26:19.45 |
-17:46:24.5 |
HIP 80570 |
10.05 |
| 2026-09-24 12:00 |
16:27:01.82 |
-17:49:38.7 |
HIP 80570 |
3.53 |
| 2026-09-25 00:00 |
16:27:44.42 |
-17:52:52.3 |
HIP 80655 |
4.40 |
| 2026-09-25 12:00 |
16:28:27.24 |
-17:56:05.4 |
HIP 80712 |
5.28 |
| 2026-09-26 00:00 |
16:29:10.29 |
-17:59:18.0 |
HIP 80712 |
5.90 |
| 2026-09-26 12:00 |
16:29:53.56 |
-18:02:30.0 |
HIP 80712 |
16.53 |
| 2026-09-27 00:00 |
16:30:37.06 |
-18:05:41.5 |
HIP 80881 |
18.31 |
| 2026-09-27 12:00 |
16:31:20.77 |
-18:08:52.4 |
HIP 80988 |
17.30 |
| 2026-09-28 00:00 |
16:32:04.71 |
-18:12:02.7 |
HIP 80988 |
12.70 |
| 2026-09-28 12:00 |
16:32:48.87 |
-18:15:12.4 |
HIP 80988 |
16.18 |
| 2026-09-29 00:00 |
16:33:33.25 |
-18:18:21.5 |
HIP 81179 |
18.76 |
| 2026-09-29 12:00 |
16:34:17.84 |
-18:21:30.0 |
HIP 81179 |
8.81 |
| 2026-09-30 00:00 |
16:35:02.65 |
-18:24:37.8 |
HIP 81179 |
6.86 |
| 2026-09-30 12:00 |
16:35:47.68 |
-18:27:45.0 |
HIP 81237 |
13.29 |
| 2026-10-01 00:00 |
16:36:32.93 |
-18:30:51.6 |
HIP 81406 |
16.95 |
| 2026-10-01 12:00 |
16:37:18.39 |
-18:33:57.4 |
HIP 81406 |
12.31 |
| 2026-10-02 00:00 |
16:38:04.07 |
-18:37:02.6 |
HIP 81486 |
14.45 |
| 2026-10-02 12:00 |
16:38:49.96 |
-18:40:07.2 |
HIP 81514 |
9.05 |
| 2026-10-03 00:00 |
16:39:36.07 |
-18:43:11.0 |
HIP 81514 |
14.35 |
| 2026-10-03 12:00 |
16:40:22.39 |
-18:46:14.1 |
HIP 81514 |
24.27 |
| 2026-10-04 00:00 |
16:41:08.92 |
-18:49:16.4 |
HIP 81758 |
13.48 |
| 2026-10-04 12:00 |
16:41:55.66 |
-18:52:18.1 |
HIP 81758 |
3.99 |
| 2026-10-05 00:00 |
16:42:42.62 |
-18:55:19.0 |
HIP 81758 |
10.68 |
| 2026-10-05 12:00 |
16:43:29.78 |
-18:58:19.1 |
HIP 81758 |
21.88 |
| 2026-10-06 00:00 |
16:44:17.15 |
-19:01:18.4 |
HIP 82038 |
18.58 |
| 2026-10-06 12:00 |
16:45:04.74 |
-19:04:17.0 |
HIP 82038 |
7.18 |
| 2026-10-07 00:00 |
16:45:52.52 |
-19:07:14.8 |
HIP 82038 |
5.37 |
| 2026-10-07 12:00 |
16:46:40.52 |
-19:10:11.7 |
HIP 82038 |
16.73 |
| 2026-10-08 00:00 |
16:47:28.72 |
-19:13:07.9 |
HIP 82265 |
15.55 |
| 2026-10-08 12:00 |
16:48:17.13 |
-19:16:03.1 |
HIP 82265 |
3.76 |
| 2026-10-09 00:00 |
16:49:05.74 |
-19:18:57.6 |
HIP 82265 |
8.08 |
| 2026-10-09 12:00 |
16:49:54.56 |
-19:21:51.2 |
HIP 82307 |
19.24 |
| 2026-10-10 00:00 |
16:50:43.58 |
-19:24:43.9 |
HIP 82465 |
14.92 |
| 2026-10-10 12:00 |
16:51:32.79 |
-19:27:35.7 |
HIP 82547 |
12.87 |
| 2026-10-11 00:00 |
16:52:22.21 |
-19:30:26.6 |
HIP 82547 |
9.04 |