P/2013 T2 (Schwartz)
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) |
| 2026-02-03 00:00 |
19:56:19.57 |
-27:10:39.0 |
HIP 98162 |
8.30 |
| 2026-02-03 12:00 |
19:57:36.50 |
-27:06:57.2 |
HIP 98162 |
9.40 |
| 2026-02-04 00:00 |
19:58:53.44 |
-27:03:13.0 |
HIP 98284 |
14.85 |
| 2026-02-04 12:00 |
20:00:10.40 |
-26:59:26.3 |
HIP 98518 |
14.86 |
| 2026-02-05 00:00 |
20:01:27.37 |
-26:55:37.2 |
HIP 98518 |
17.08 |
| 2026-02-05 12:00 |
20:02:44.36 |
-26:51:45.6 |
HIP 98518 |
31.32 |
| 2026-02-06 00:00 |
20:04:01.36 |
-26:47:51.6 |
HIP 98926 |
15.79 |
| 2026-02-06 12:00 |
20:05:18.37 |
-26:43:55.2 |
HIP 98926 |
5.08 |
| 2026-02-07 00:00 |
20:06:35.39 |
-26:39:56.3 |
HIP 99070 |
14.08 |
| 2026-02-07 12:00 |
20:07:52.41 |
-26:35:55.0 |
HIP 99070 |
17.68 |
| 2026-02-08 00:00 |
20:09:09.45 |
-26:31:51.3 |
HIP 99273 |
18.45 |
| 2026-02-08 12:00 |
20:10:26.49 |
-26:27:45.1 |
HIP 99536 |
22.33 |
| 2026-02-09 00:00 |
20:11:43.54 |
-26:23:36.5 |
HIP 99536 |
4.64 |
| 2026-02-09 12:00 |
20:13:00.60 |
-26:19:25.5 |
HIP 99613 |
8.05 |
| 2026-02-10 00:00 |
20:14:17.66 |
-26:15:12.0 |
HIP 99613 |
18.70 |
| 2026-02-10 12:00 |
20:15:34.72 |
-26:10:56.1 |
HIP 99937 |
30.16 |
| 2026-02-11 00:00 |
20:16:51.79 |
-26:06:37.8 |
HIP 100038 |
14.55 |
| 2026-02-11 12:00 |
20:18:08.85 |
-26:02:17.1 |
HIP 100038 |
6.86 |
| 2026-02-12 00:00 |
20:19:25.92 |
-25:57:53.9 |
HIP 100182 |
12.44 |
| 2026-02-12 12:00 |
20:20:42.98 |
-25:53:28.4 |
HIP 100311 |
15.47 |
| 2026-02-13 00:00 |
20:22:00.05 |
-25:49:00.4 |
HIP 100474 |
21.75 |
| 2026-02-13 12:00 |
20:23:17.11 |
-25:44:30.0 |
HIP 100663 |
18.83 |
| 2026-02-14 00:00 |
20:24:34.17 |
-25:39:57.2 |
HIP 100663 |
10.09 |
| 2026-02-14 12:00 |
20:25:51.22 |
-25:35:22.0 |
HIP 100663 |
22.22 |
| 2026-02-15 00:00 |
20:27:08.27 |
-25:30:44.3 |
HIP 100947 |
13.22 |
| 2026-02-15 12:00 |
20:28:25.31 |
-25:26:04.3 |
HIP 100947 |
11.66 |
| 2026-02-16 00:00 |
20:29:42.34 |
-25:21:21.9 |
HIP 101122 |
25.85 |
| 2026-02-16 12:00 |
20:30:59.37 |
-25:16:37.1 |
HIP 101336 |
30.32 |
| 2026-02-17 00:00 |
20:32:16.38 |
-25:11:49.9 |
HIP 101384 |
17.25 |
| 2026-02-17 12:00 |
20:33:33.38 |
-25:07:00.4 |
HIP 101384 |
13.94 |
| 2026-02-18 00:00 |
20:34:50.38 |
-25:02:08.4 |
HIP 101577 |
27.10 |
| 2026-02-18 12:00 |
20:36:07.36 |
-24:57:14.1 |
HIP 101808 |
25.51 |
| 2026-02-19 00:00 |
20:37:24.32 |
-24:52:17.4 |
HIP 101808 |
15.60 |
| 2026-02-19 12:00 |
20:38:41.27 |
-24:47:18.4 |
HIP 101808 |
22.23 |
| 2026-02-20 00:00 |
20:39:58.21 |
-24:42:17.0 |
HIP 102047 |
23.76 |
| 2026-02-20 12:00 |
20:41:15.12 |
-24:37:13.2 |
HIP 102047 |
26.40 |
| 2026-02-21 00:00 |
20:42:32.02 |
-24:32:07.1 |
HIP 102290 |
16.94 |
| 2026-02-21 12:00 |
20:43:48.91 |
-24:26:58.7 |
HIP 102290 |
14.91 |
| 2026-02-22 00:00 |
20:45:05.77 |
-24:21:47.9 |
HIP 102290 |
28.69 |
| 2026-02-22 12:00 |
20:46:22.61 |
-24:16:34.8 |
HIP 102494 |
33.17 |
| 2026-02-23 00:00 |
20:47:39.44 |
-24:11:19.4 |
HIP 102494 |
33.69 |
| 2026-02-23 12:00 |
20:48:56.24 |
-24:06:01.6 |
HIP 102837 |
35.01 |
| 2026-02-24 00:00 |
20:50:13.02 |
-24:00:41.6 |
HIP 102837 |
26.45 |