メタデータ
| 項目 |
値 |
| Designation |
P/2013 T2 (Schwartz) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2013-06-20T16:25:47.807040Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:32:41Z |
| Obs used |
118 |
| NEO |
- |
| M1 |
14.500 |
| K1 |
13.500 |
| PC |
0.030 |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2013-10-31.0000000 |
| e |
0.52849640 |
| q (au) |
1.599620 |
| a (au) |
3.392593 |
| i (deg) |
9.352147 |
| Ω (om, deg) |
2.629851 |
| ω (w, deg) |
342.521773 |
| M (ma, deg) |
20.869729 |
等級
散乱 + 全体線形
$$
M_a = (14.012 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
14.012 |
| n |
6.000 |
| gf |
0.946 |
| gb |
-0.661 |
| k |
0.968 |
| δ90 |
7.825 |
| 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) |
| 2026-05-12 00:00 |
23:59:09.36 |
-04:16:14.4 |
HIP 18 |
20.48 |
| 2026-05-12 12:00 |
00:00:19.15 |
-04:07:05.0 |
HIP 18 |
4.17 |
| 2026-05-13 00:00 |
00:01:28.89 |
-03:57:55.2 |
HIP 18 |
19.71 |
| 2026-05-13 12:00 |
00:02:38.57 |
-03:48:45.1 |
HIP 267 |
22.56 |
| 2026-05-14 00:00 |
00:03:48.21 |
-03:39:34.8 |
HIP 453 |
26.86 |
| 2026-05-14 12:00 |
00:04:57.79 |
-03:30:24.3 |
HIP 453 |
21.81 |
| 2026-05-15 00:00 |
00:06:07.32 |
-03:21:13.5 |
HIP 569 |
20.04 |
| 2026-05-15 12:00 |
00:07:16.79 |
-03:12:02.5 |
HIP 569 |
26.13 |
| 2026-05-16 00:00 |
00:08:26.21 |
-03:02:51.3 |
HIP 635 |
31.73 |
| 2026-05-16 12:00 |
00:09:35.58 |
-02:53:39.9 |
HIP 803 |
20.57 |
| 2026-05-17 00:00 |
00:10:44.89 |
-02:44:28.4 |
HIP 803 |
16.49 |
| 2026-05-17 12:00 |
00:11:54.15 |
-02:35:16.8 |
HIP 931 |
29.78 |
| 2026-05-18 00:00 |
00:13:03.36 |
-02:26:05.1 |
HIP 1153 |
24.75 |
| 2026-05-18 12:00 |
00:14:12.50 |
-02:16:53.2 |
HIP 1153 |
5.84 |
| 2026-05-19 00:00 |
00:15:21.60 |
-02:07:41.3 |
HIP 1153 |
14.87 |
| 2026-05-19 12:00 |
00:16:30.63 |
-01:58:29.3 |
HIP 1424 |
20.56 |
| 2026-05-20 00:00 |
00:17:39.61 |
-01:49:17.3 |
HIP 1424 |
3.31 |
| 2026-05-20 12:00 |
00:18:48.54 |
-01:40:05.3 |
HIP 1424 |
19.04 |
| 2026-05-21 00:00 |
00:19:57.41 |
-01:30:53.2 |
HIP 1424 |
38.41 |
| 2026-05-21 12:00 |
00:21:06.22 |
-01:21:41.2 |
HIP 1663 |
29.71 |
| 2026-05-22 00:00 |
00:22:14.97 |
-01:12:29.1 |
HIP 1843 |
26.41 |
| 2026-05-22 12:00 |
00:23:23.67 |
-01:03:17.1 |
HIP 1927 |
17.68 |
| 2026-05-23 00:00 |
00:24:32.32 |
-00:54:05.2 |
HIP 1927 |
20.68 |
| 2026-05-23 12:00 |
00:25:40.91 |
-00:44:53.3 |
HIP 2121 |
21.08 |
| 2026-05-24 00:00 |
00:26:49.44 |
-00:35:41.5 |
HIP 2121 |
20.11 |
| 2026-05-24 12:00 |
00:27:57.91 |
-00:26:29.8 |
HIP 2333 |
29.17 |
| 2026-05-25 00:00 |
00:29:06.33 |
-00:17:18.2 |
HIP 2333 |
11.32 |
| 2026-05-25 12:00 |
00:30:14.70 |
-00:08:06.8 |
HIP 2333 |
12.63 |
| 2026-05-26 00:00 |
00:31:23.00 |
+00:01:04.6 |
HIP 2333 |
30.71 |
| 2026-05-26 12:00 |
00:32:31.26 |
+00:10:15.7 |
HIP 2492 |
29.78 |
| 2026-05-27 00:00 |
00:33:39.45 |
+00:19:26.7 |
HIP 2492 |
35.09 |
| 2026-05-27 12:00 |
00:34:47.59 |
+00:28:37.5 |
HIP 2706 |
32.09 |
| 2026-05-28 00:00 |
00:35:55.67 |
+00:37:48.1 |
HIP 2706 |
32.05 |
| 2026-05-28 12:00 |
00:37:03.70 |
+00:46:58.5 |
HIP 2982 |
24.65 |
| 2026-05-29 00:00 |
00:38:11.67 |
+00:56:08.7 |
HIP 3055 |
9.14 |
| 2026-05-29 12:00 |
00:39:19.58 |
+01:05:18.6 |
HIP 3055 |
11.59 |
| 2026-05-30 00:00 |
00:40:27.44 |
+01:14:28.2 |
HIP 3302 |
27.01 |
| 2026-05-30 12:00 |
00:41:35.24 |
+01:23:37.6 |
HIP 3265 |
21.25 |
| 2026-05-31 00:00 |
00:42:42.98 |
+01:32:46.6 |
HIP 3350 |
8.95 |
| 2026-05-31 12:00 |
00:43:50.67 |
+01:41:55.4 |
HIP 3350 |
17.43 |
| 2026-06-01 00:00 |
00:44:58.30 |
+01:51:03.8 |
HIP 3535 |
4.19 |
| 2026-06-01 12:00 |
00:46:05.87 |
+02:00:11.9 |
HIP 3535 |
20.01 |
| 2026-06-02 00:00 |
00:47:13.39 |
+02:09:19.6 |
HIP 3652 |
13.85 |