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) |
| 2026-07-29 00:00 |
15:34:56.94 |
-11:35:48.9 |
HIP 76322 |
8.15 |
| 2026-07-29 12:00 |
15:35:06.79 |
-11:38:36.4 |
HIP 76322 |
4.56 |
| 2026-07-30 00:00 |
15:35:16.96 |
-11:41:24.9 |
HIP 76322 |
1.51 |
| 2026-07-30 12:00 |
15:35:27.48 |
-11:44:14.3 |
HIP 76322 |
3.50 |
| 2026-07-31 00:00 |
15:35:38.32 |
-11:47:04.7 |
HIP 76322 |
7.22 |
| 2026-07-31 12:00 |
15:35:49.50 |
-11:49:56.0 |
HIP 76322 |
11.12 |
| 2026-08-01 00:00 |
15:36:01.02 |
-11:52:48.3 |
HIP 76420 |
9.56 |
| 2026-08-01 12:00 |
15:36:12.86 |
-11:55:41.4 |
HIP 76420 |
5.47 |
| 2026-08-02 00:00 |
15:36:25.04 |
-11:58:35.5 |
HIP 76420 |
1.35 |
| 2026-08-02 12:00 |
15:36:37.54 |
-12:01:30.5 |
HIP 76420 |
2.94 |
| 2026-08-03 00:00 |
15:36:50.38 |
-12:04:26.3 |
HIP 76420 |
7.23 |
| 2026-08-03 12:00 |
15:37:03.55 |
-12:07:23.0 |
HIP 76420 |
11.59 |
| 2026-08-04 00:00 |
15:37:17.05 |
-12:10:20.6 |
HIP 76420 |
16.02 |
| 2026-08-04 12:00 |
15:37:30.87 |
-12:13:19.0 |
HIP 76420 |
20.52 |
| 2026-08-05 00:00 |
15:37:45.02 |
-12:16:18.2 |
HIP 76420 |
25.09 |
| 2026-08-05 12:00 |
15:37:59.50 |
-12:19:18.3 |
HIP 76420 |
29.73 |
| 2026-08-06 00:00 |
15:38:14.31 |
-12:22:19.1 |
HIP 76717 |
27.28 |
| 2026-08-06 12:00 |
15:38:29.44 |
-12:25:20.8 |
HIP 76717 |
25.37 |
| 2026-08-07 00:00 |
15:38:44.90 |
-12:28:23.2 |
HIP 76717 |
24.21 |
| 2026-08-07 12:00 |
15:39:00.69 |
-12:31:26.4 |
HIP 76717 |
23.95 |
| 2026-08-08 00:00 |
15:39:16.79 |
-12:34:30.4 |
HIP 76717 |
24.68 |
| 2026-08-08 12:00 |
15:39:33.23 |
-12:37:35.1 |
HIP 76622 |
25.06 |
| 2026-08-09 00:00 |
15:39:49.98 |
-12:40:40.5 |
HIP 76622 |
24.41 |
| 2026-08-09 12:00 |
15:40:07.06 |
-12:43:46.6 |
HIP 76622 |
24.88 |
| 2026-08-10 00:00 |
15:40:24.46 |
-12:46:53.5 |
HIP 76876 |
21.77 |
| 2026-08-10 12:00 |
15:40:42.19 |
-12:50:01.0 |
HIP 76876 |
17.96 |
| 2026-08-11 00:00 |
15:41:00.23 |
-12:53:09.2 |
HIP 76876 |
15.04 |
| 2026-08-11 12:00 |
15:41:18.59 |
-12:56:18.1 |
HIP 76876 |
13.69 |
| 2026-08-12 00:00 |
15:41:37.28 |
-12:59:27.6 |
HIP 76876 |
14.42 |
| 2026-08-12 12:00 |
15:41:56.28 |
-13:02:37.8 |
HIP 76876 |
17.05 |
| 2026-08-13 00:00 |
15:42:15.60 |
-13:05:48.5 |
HIP 76982 |
13.16 |
| 2026-08-13 12:00 |
15:42:35.23 |
-13:09:00.0 |
HIP 76982 |
9.90 |
| 2026-08-14 00:00 |
15:42:55.19 |
-13:12:11.9 |
HIP 76982 |
9.43 |
| 2026-08-14 12:00 |
15:43:15.45 |
-13:15:24.4 |
HIP 76982 |
12.15 |
| 2026-08-15 00:00 |
15:43:36.03 |
-13:18:37.6 |
HIP 76983 |
15.99 |
| 2026-08-15 12:00 |
15:43:56.92 |
-13:21:51.2 |
HIP 76983 |
16.21 |
| 2026-08-16 00:00 |
15:44:18.13 |
-13:25:05.4 |
HIP 76983 |
18.56 |
| 2026-08-16 12:00 |
15:44:39.64 |
-13:28:20.1 |
HIP 76983 |
22.44 |
| 2026-08-17 00:00 |
15:45:01.46 |
-13:31:35.3 |
HIP 76983 |
27.24 |
| 2026-08-17 12:00 |
15:45:23.59 |
-13:34:51.0 |
HIP 77270 |
30.37 |
| 2026-08-18 00:00 |
15:45:46.03 |
-13:38:07.2 |
HIP 77270 |
24.75 |
| 2026-08-18 12:00 |
15:46:08.77 |
-13:41:23.8 |
HIP 77270 |
19.55 |
| 2026-08-19 00:00 |
15:46:31.82 |
-13:44:40.8 |
HIP 77270 |
15.30 |