メタデータ
| 項目 |
値 |
| Designation |
P/2005 T3 (Read) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2006-01-12T10:35:40.450560Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:53Z |
| Obs used |
42 |
| NEO |
- |
| M1 |
9.200 |
| 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) |
2005-10-24.0000000 |
| e |
0.17378534 |
| q (au) |
6.202461 |
| a (au) |
7.507082 |
| i (deg) |
6.263090 |
| Ω (om, deg) |
27.995785 |
| ω (w, deg) |
8.164900 |
| M (ma, deg) |
356.145419 |
等級
散乱 + 全体線形
$$
M_a = (12.262 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
12.262 |
| n |
2.000 |
| gf |
0.955 |
| gb |
-0.500 |
| k |
1.000 |
| δ90 |
8.888 |
| 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) |
| 2026-07-29 00:00 |
02:38:27.79 |
+16:04:00.0 |
HIP 12538 |
41.37 |
| 2026-07-29 12:00 |
02:38:37.34 |
+16:05:00.9 |
HIP 12538 |
39.14 |
| 2026-07-30 00:00 |
02:38:46.75 |
+16:06:01.3 |
HIP 12538 |
36.96 |
| 2026-07-30 12:00 |
02:38:56.04 |
+16:07:01.0 |
HIP 12538 |
34.86 |
| 2026-07-31 00:00 |
02:39:05.19 |
+16:08:00.2 |
HIP 12538 |
32.83 |
| 2026-07-31 12:00 |
02:39:14.22 |
+16:08:58.8 |
HIP 12538 |
30.89 |
| 2026-08-01 00:00 |
02:39:23.12 |
+16:09:56.8 |
HIP 12538 |
29.04 |
| 2026-08-01 12:00 |
02:39:31.88 |
+16:10:54.2 |
HIP 12538 |
27.29 |
| 2026-08-02 00:00 |
02:39:40.52 |
+16:11:51.0 |
HIP 12538 |
25.66 |
| 2026-08-02 12:00 |
02:39:49.02 |
+16:12:47.3 |
HIP 12538 |
24.17 |
| 2026-08-03 00:00 |
02:39:57.38 |
+16:13:42.9 |
HIP 12538 |
22.81 |
| 2026-08-03 12:00 |
02:40:05.62 |
+16:14:37.9 |
HIP 12538 |
21.62 |
| 2026-08-04 00:00 |
02:40:13.71 |
+16:15:32.3 |
HIP 12538 |
20.61 |
| 2026-08-04 12:00 |
02:40:21.68 |
+16:16:26.1 |
HIP 12538 |
19.80 |
| 2026-08-05 00:00 |
02:40:29.50 |
+16:17:19.3 |
HIP 12538 |
19.20 |
| 2026-08-05 12:00 |
02:40:37.19 |
+16:18:11.9 |
HIP 12538 |
18.83 |
| 2026-08-06 00:00 |
02:40:44.74 |
+16:19:03.9 |
HIP 12538 |
18.67 |
| 2026-08-06 12:00 |
02:40:52.16 |
+16:19:55.3 |
HIP 12538 |
18.74 |
| 2026-08-07 00:00 |
02:40:59.43 |
+16:20:46.1 |
HIP 12538 |
19.01 |
| 2026-08-07 12:00 |
02:41:06.57 |
+16:21:36.2 |
HIP 12538 |
19.46 |
| 2026-08-08 00:00 |
02:41:13.56 |
+16:22:25.7 |
HIP 12538 |
20.08 |
| 2026-08-08 12:00 |
02:41:20.42 |
+16:23:14.6 |
HIP 12538 |
20.84 |
| 2026-08-09 00:00 |
02:41:27.13 |
+16:24:02.9 |
HIP 12568 |
20.28 |
| 2026-08-09 12:00 |
02:41:33.70 |
+16:24:50.5 |
HIP 12568 |
19.35 |
| 2026-08-10 00:00 |
02:41:40.12 |
+16:25:37.5 |
HIP 12568 |
18.55 |
| 2026-08-10 12:00 |
02:41:46.41 |
+16:26:23.9 |
HIP 12568 |
17.88 |
| 2026-08-11 00:00 |
02:41:52.54 |
+16:27:09.7 |
HIP 12568 |
17.36 |
| 2026-08-11 12:00 |
02:41:58.54 |
+16:27:54.8 |
HIP 12568 |
16.99 |
| 2026-08-12 00:00 |
02:42:04.39 |
+16:28:39.3 |
HIP 12568 |
16.76 |
| 2026-08-12 12:00 |
02:42:10.09 |
+16:29:23.1 |
HIP 12568 |
16.67 |
| 2026-08-13 00:00 |
02:42:15.64 |
+16:30:06.4 |
HIP 12568 |
16.71 |
| 2026-08-13 12:00 |
02:42:21.05 |
+16:30:48.9 |
HIP 12568 |
16.88 |
| 2026-08-14 00:00 |
02:42:26.31 |
+16:31:30.9 |
HIP 12568 |
17.16 |
| 2026-08-14 12:00 |
02:42:31.42 |
+16:32:12.1 |
HIP 12568 |
17.53 |
| 2026-08-15 00:00 |
02:42:36.39 |
+16:32:52.8 |
HIP 12568 |
17.99 |
| 2026-08-15 12:00 |
02:42:41.20 |
+16:33:32.8 |
HIP 12568 |
18.51 |
| 2026-08-16 00:00 |
02:42:45.87 |
+16:34:12.1 |
HIP 12568 |
19.08 |
| 2026-08-16 12:00 |
02:42:50.39 |
+16:34:50.8 |
HIP 12568 |
19.70 |
| 2026-08-17 00:00 |
02:42:54.76 |
+16:35:28.9 |
HIP 12568 |
20.35 |
| 2026-08-17 12:00 |
02:42:58.97 |
+16:36:06.3 |
HIP 12568 |
21.02 |
| 2026-08-18 00:00 |
02:43:03.04 |
+16:36:43.1 |
HIP 12568 |
21.71 |
| 2026-08-18 12:00 |
02:43:06.96 |
+16:37:19.2 |
HIP 12568 |
22.40 |
| 2026-08-19 00:00 |
02:43:10.72 |
+16:37:54.7 |
HIP 12634 |
23.04 |