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) |
| 2026-09-20 00:00 |
03:53:54.86 |
+28:16:25.8 |
HIP 18208 |
8.44 |
| 2026-09-20 12:00 |
03:54:09.80 |
+28:21:08.6 |
HIP 18208 |
14.15 |
| 2026-09-21 00:00 |
03:54:24.17 |
+28:25:49.9 |
HIP 18320 |
16.52 |
| 2026-09-21 12:00 |
03:54:37.95 |
+28:30:29.8 |
HIP 18320 |
19.80 |
| 2026-09-22 00:00 |
03:54:51.16 |
+28:35:08.2 |
HIP 18320 |
23.92 |
| 2026-09-22 12:00 |
03:55:03.79 |
+28:39:45.1 |
HIP 18320 |
28.47 |
| 2026-09-23 00:00 |
03:55:15.83 |
+28:44:20.6 |
HIP 18320 |
33.24 |
| 2026-09-23 12:00 |
03:55:27.28 |
+28:48:54.5 |
HIP 18320 |
38.09 |
| 2026-09-24 00:00 |
03:55:38.14 |
+28:53:27.0 |
HIP 18472 |
41.75 |
| 2026-09-24 12:00 |
03:55:48.41 |
+28:57:57.9 |
HIP 18472 |
36.72 |
| 2026-09-25 00:00 |
03:55:58.08 |
+29:02:27.3 |
HIP 18472 |
31.77 |
| 2026-09-25 12:00 |
03:56:07.16 |
+29:06:55.0 |
HIP 18472 |
26.89 |
| 2026-09-26 00:00 |
03:56:15.63 |
+29:11:21.2 |
HIP 18472 |
22.08 |
| 2026-09-26 12:00 |
03:56:23.50 |
+29:15:45.8 |
HIP 18472 |
17.35 |
| 2026-09-27 00:00 |
03:56:30.76 |
+29:20:08.8 |
HIP 18472 |
12.69 |
| 2026-09-27 12:00 |
03:56:37.42 |
+29:24:30.1 |
HIP 18472 |
8.11 |
| 2026-09-28 00:00 |
03:56:43.46 |
+29:28:49.7 |
HIP 18472 |
3.65 |
| 2026-09-28 12:00 |
03:56:48.89 |
+29:33:07.6 |
HIP 18472 |
1.36 |
| 2026-09-29 00:00 |
03:56:53.70 |
+29:37:23.7 |
HIP 18472 |
5.45 |
| 2026-09-29 12:00 |
03:56:57.90 |
+29:41:38.2 |
HIP 18472 |
9.76 |
| 2026-09-30 00:00 |
03:57:01.47 |
+29:45:50.8 |
HIP 18472 |
14.04 |
| 2026-09-30 12:00 |
03:57:04.43 |
+29:50:01.6 |
HIP 18472 |
18.27 |
| 2026-10-01 00:00 |
03:57:06.76 |
+29:54:10.6 |
HIP 18472 |
22.45 |
| 2026-10-01 12:00 |
03:57:08.46 |
+29:58:17.7 |
HIP 18472 |
26.58 |
| 2026-10-02 00:00 |
03:57:09.53 |
+30:02:23.0 |
HIP 18472 |
30.66 |
| 2026-10-02 12:00 |
03:57:09.98 |
+30:06:26.2 |
HIP 18472 |
34.70 |
| 2026-10-03 00:00 |
03:57:09.79 |
+30:10:27.6 |
HIP 18472 |
38.69 |
| 2026-10-03 12:00 |
03:57:08.97 |
+30:14:26.9 |
HIP 18676 |
38.09 |
| 2026-10-04 00:00 |
03:57:07.52 |
+30:18:24.2 |
HIP 18676 |
37.39 |
| 2026-10-04 12:00 |
03:57:05.43 |
+30:22:19.5 |
HIP 18676 |
37.25 |
| 2026-10-05 00:00 |
03:57:02.71 |
+30:26:12.7 |
HIP 18676 |
37.65 |
| 2026-10-05 12:00 |
03:56:59.35 |
+30:30:03.7 |
HIP 18676 |
38.59 |
| 2026-10-06 00:00 |
03:56:55.36 |
+30:33:52.6 |
HIP 18350 |
35.02 |
| 2026-10-06 12:00 |
03:56:50.73 |
+30:37:39.3 |
HIP 18350 |
31.37 |
| 2026-10-07 00:00 |
03:56:45.47 |
+30:41:23.7 |
HIP 18350 |
27.72 |
| 2026-10-07 12:00 |
03:56:39.57 |
+30:45:05.9 |
HIP 18350 |
24.10 |
| 2026-10-08 00:00 |
03:56:33.04 |
+30:48:45.8 |
HIP 18350 |
20.51 |
| 2026-10-08 12:00 |
03:56:25.88 |
+30:52:23.3 |
HIP 18350 |
16.99 |
| 2026-10-09 00:00 |
03:56:18.09 |
+30:55:58.4 |
HIP 18350 |
13.60 |
| 2026-10-09 12:00 |
03:56:09.67 |
+30:59:31.2 |
HIP 18350 |
10.49 |
| 2026-10-10 00:00 |
03:56:00.63 |
+31:03:01.4 |
HIP 18350 |
8.05 |
| 2026-10-10 12:00 |
03:55:50.96 |
+31:06:29.2 |
HIP 18350 |
7.04 |
| 2026-10-11 00:00 |
03:55:40.67 |
+31:09:54.5 |
HIP 18350 |
8.09 |