メタデータ
| 項目 |
値 |
| Designation |
P/2019 T6 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-11-07T18:13:43.798080Z |
| Orbit solution date (soln_date, UTC) |
2021-05-31T22:43:04Z |
| Obs used |
229 |
| NEO |
- |
| M1 |
17.200 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-10-08T11:16:09.120000Z |
| Discovery magnitude (MPC) |
19.60 i |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2019-11-12.0000000 |
| e |
0.62222327 |
| q (au) |
2.051927 |
| a (au) |
5.431587 |
| i (deg) |
18.697018 |
| Ω (om, deg) |
71.310948 |
| ω (w, deg) |
328.909725 |
| M (ma, deg) |
0.330162 |
等級
散乱 + 全体線形
$$
M_a = (16.257 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
16.257 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-1.000 |
| 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
天体暦
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-05-12 00:00 |
14:50:26.98 |
-05:37:09.7 |
HIP 72491 |
19.30 |
| 2026-05-12 12:00 |
14:50:15.31 |
-05:36:35.2 |
HIP 72491 |
17.27 |
| 2026-05-13 00:00 |
14:50:03.66 |
-05:36:01.1 |
HIP 72491 |
15.55 |
| 2026-05-13 12:00 |
14:49:52.02 |
-05:35:27.5 |
HIP 72491 |
14.23 |
| 2026-05-14 00:00 |
14:49:40.40 |
-05:34:54.3 |
HIP 72465 |
13.32 |
| 2026-05-14 12:00 |
14:49:28.81 |
-05:34:21.5 |
HIP 72465 |
12.15 |
| 2026-05-15 00:00 |
14:49:17.24 |
-05:33:49.1 |
HIP 72465 |
11.62 |
| 2026-05-15 12:00 |
14:49:05.69 |
-05:33:17.2 |
HIP 72465 |
11.80 |
| 2026-05-16 00:00 |
14:48:54.16 |
-05:32:45.7 |
HIP 72465 |
12.67 |
| 2026-05-16 12:00 |
14:48:42.67 |
-05:32:14.6 |
HIP 72388 |
10.22 |
| 2026-05-17 00:00 |
14:48:31.20 |
-05:31:44.0 |
HIP 72388 |
7.32 |
| 2026-05-17 12:00 |
14:48:19.76 |
-05:31:13.9 |
HIP 72388 |
4.43 |
| 2026-05-18 00:00 |
14:48:08.35 |
-05:30:44.2 |
HIP 72388 |
1.55 |
| 2026-05-18 12:00 |
14:47:56.97 |
-05:30:15.0 |
HIP 72388 |
1.33 |
| 2026-05-19 00:00 |
14:47:45.63 |
-05:29:46.2 |
HIP 72388 |
4.19 |
| 2026-05-19 12:00 |
14:47:34.32 |
-05:29:18.0 |
HIP 72388 |
7.04 |
| 2026-05-20 00:00 |
14:47:23.05 |
-05:28:50.2 |
HIP 72388 |
9.89 |
| 2026-05-20 12:00 |
14:47:11.81 |
-05:28:22.9 |
HIP 72388 |
12.72 |
| 2026-05-21 00:00 |
14:47:00.62 |
-05:27:56.0 |
HIP 72388 |
15.54 |
| 2026-05-21 12:00 |
14:46:49.46 |
-05:27:29.7 |
HIP 72388 |
18.35 |
| 2026-05-22 00:00 |
14:46:38.35 |
-05:27:03.9 |
HIP 72388 |
21.15 |
| 2026-05-22 12:00 |
14:46:27.27 |
-05:26:38.5 |
HIP 72388 |
23.94 |
| 2026-05-23 00:00 |
14:46:16.24 |
-05:26:13.7 |
HIP 72388 |
26.71 |
| 2026-05-23 12:00 |
14:46:05.26 |
-05:25:49.4 |
HIP 72388 |
29.48 |
| 2026-05-24 00:00 |
14:45:54.32 |
-05:25:25.5 |
HIP 72388 |
32.23 |
| 2026-05-24 12:00 |
14:45:43.43 |
-05:25:02.2 |
HIP 72388 |
34.97 |
| 2026-05-25 00:00 |
14:45:32.59 |
-05:24:39.4 |
HIP 72388 |
37.69 |
| 2026-05-25 12:00 |
14:45:21.79 |
-05:24:17.1 |
HIP 71957 |
37.59 |
| 2026-05-26 00:00 |
14:45:11.05 |
-05:23:55.4 |
HIP 71957 |
35.32 |
| 2026-05-26 12:00 |
14:45:00.36 |
-05:23:34.1 |
HIP 71957 |
33.12 |
| 2026-05-27 00:00 |
14:44:49.72 |
-05:23:13.4 |
HIP 71957 |
31.00 |
| 2026-05-27 12:00 |
14:44:39.13 |
-05:22:53.2 |
HIP 71957 |
28.98 |
| 2026-05-28 00:00 |
14:44:28.60 |
-05:22:33.5 |
HIP 71957 |
27.07 |
| 2026-05-28 12:00 |
14:44:18.13 |
-05:22:14.4 |
HIP 71957 |
25.30 |
| 2026-05-29 00:00 |
14:44:07.71 |
-05:21:55.8 |
HIP 71957 |
23.70 |
| 2026-05-29 12:00 |
14:43:57.35 |
-05:21:37.8 |
HIP 71957 |
22.28 |
| 2026-05-30 00:00 |
14:43:47.05 |
-05:21:20.3 |
HIP 71957 |
21.09 |
| 2026-05-30 12:00 |
14:43:36.81 |
-05:21:03.3 |
HIP 71957 |
20.17 |
| 2026-05-31 00:00 |
14:43:26.63 |
-05:20:46.9 |
HIP 71957 |
19.53 |
| 2026-05-31 12:00 |
14:43:16.51 |
-05:20:31.0 |
HIP 71957 |
19.20 |
| 2026-06-01 00:00 |
14:43:06.45 |
-05:20:15.7 |
HIP 71903 |
18.24 |
| 2026-06-01 12:00 |
14:42:56.46 |
-05:20:00.9 |
HIP 71903 |
16.76 |
| 2026-06-02 00:00 |
14:42:46.53 |
-05:19:46.7 |
HIP 71903 |
15.56 |