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) |
| 2026-03-26 00:00 |
15:06:52.00 |
-06:47:30.2 |
HIP 73861 |
17.52 |
| 2026-03-26 12:00 |
15:06:44.46 |
-06:46:44.2 |
HIP 73861 |
15.85 |
| 2026-03-27 00:00 |
15:06:36.82 |
-06:45:58.0 |
HIP 73861 |
14.25 |
| 2026-03-27 12:00 |
15:06:29.09 |
-06:45:11.7 |
HIP 73861 |
12.76 |
| 2026-03-28 00:00 |
15:06:21.26 |
-06:44:25.2 |
HIP 73861 |
11.43 |
| 2026-03-28 12:00 |
15:06:13.35 |
-06:43:38.6 |
HIP 73861 |
10.34 |
| 2026-03-29 00:00 |
15:06:05.34 |
-06:42:51.9 |
HIP 73861 |
9.59 |
| 2026-03-29 12:00 |
15:05:57.24 |
-06:42:05.0 |
HIP 73856 |
7.99 |
| 2026-03-30 00:00 |
15:05:49.05 |
-06:41:17.9 |
HIP 73856 |
6.33 |
| 2026-03-30 12:00 |
15:05:40.78 |
-06:40:30.8 |
HIP 73856 |
5.09 |
| 2026-03-31 00:00 |
15:05:32.42 |
-06:39:43.5 |
HIP 73856 |
4.62 |
| 2026-03-31 12:00 |
15:05:23.97 |
-06:38:56.1 |
HIP 73856 |
5.18 |
| 2026-04-01 00:00 |
15:05:15.43 |
-06:38:08.7 |
HIP 73856 |
6.53 |
| 2026-04-01 12:00 |
15:05:06.81 |
-06:37:21.1 |
HIP 73856 |
8.31 |
| 2026-04-02 00:00 |
15:04:58.11 |
-06:36:33.4 |
HIP 73856 |
10.31 |
| 2026-04-02 12:00 |
15:04:49.32 |
-06:35:45.6 |
HIP 73856 |
12.44 |
| 2026-04-03 00:00 |
15:04:40.45 |
-06:34:57.8 |
HIP 73856 |
14.64 |
| 2026-04-03 12:00 |
15:04:31.50 |
-06:34:09.8 |
HIP 73856 |
16.91 |
| 2026-04-04 00:00 |
15:04:22.47 |
-06:33:21.8 |
HIP 73856 |
19.21 |
| 2026-04-04 12:00 |
15:04:13.36 |
-06:32:33.8 |
HIP 73717 |
20.74 |
| 2026-04-05 00:00 |
15:04:04.17 |
-06:31:45.6 |
HIP 73717 |
21.49 |
| 2026-04-05 12:00 |
15:03:54.90 |
-06:30:57.4 |
HIP 73717 |
22.49 |
| 2026-04-06 00:00 |
15:03:45.56 |
-06:30:09.2 |
HIP 73717 |
23.70 |
| 2026-04-06 12:00 |
15:03:36.14 |
-06:29:20.9 |
HIP 73717 |
25.10 |
| 2026-04-07 00:00 |
15:03:26.64 |
-06:28:32.6 |
HIP 73767 |
26.45 |
| 2026-04-07 12:00 |
15:03:17.07 |
-06:27:44.3 |
HIP 73767 |
27.73 |
| 2026-04-08 00:00 |
15:03:07.43 |
-06:26:55.9 |
HIP 73767 |
29.19 |
| 2026-04-08 12:00 |
15:02:57.72 |
-06:26:07.5 |
HIP 73767 |
30.80 |
| 2026-04-09 00:00 |
15:02:47.93 |
-06:25:19.1 |
HIP 73767 |
32.55 |
| 2026-04-09 12:00 |
15:02:38.08 |
-06:24:30.7 |
HIP 73767 |
34.41 |
| 2026-04-10 00:00 |
15:02:28.15 |
-06:23:42.3 |
HIP 73488 |
33.37 |
| 2026-04-10 12:00 |
15:02:18.16 |
-06:22:53.9 |
HIP 73488 |
31.29 |
| 2026-04-11 00:00 |
15:02:08.10 |
-06:22:05.5 |
HIP 73488 |
29.29 |
| 2026-04-11 12:00 |
15:01:57.98 |
-06:21:17.2 |
HIP 73488 |
27.39 |
| 2026-04-12 00:00 |
15:01:47.79 |
-06:20:28.8 |
HIP 73488 |
25.61 |
| 2026-04-12 12:00 |
15:01:37.53 |
-06:19:40.5 |
HIP 73488 |
23.99 |
| 2026-04-13 00:00 |
15:01:27.22 |
-06:18:52.3 |
HIP 73488 |
22.57 |
| 2026-04-13 12:00 |
15:01:16.84 |
-06:18:04.0 |
HIP 73488 |
21.39 |
| 2026-04-14 00:00 |
15:01:06.41 |
-06:17:15.9 |
HIP 73488 |
20.51 |
| 2026-04-14 12:00 |
15:00:55.91 |
-06:16:27.8 |
HIP 73488 |
19.96 |
| 2026-04-15 00:00 |
15:00:45.36 |
-06:15:39.8 |
HIP 73488 |
19.78 |
| 2026-04-15 12:00 |
15:00:34.75 |
-06:14:51.8 |
HIP 73488 |
19.99 |
| 2026-04-16 00:00 |
15:00:24.09 |
-06:14:03.9 |
HIP 73488 |
20.58 |