メタデータ
| 項目 |
値 |
| Designation |
P/2019 S3 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-08-26T02:18:33.667200Z |
| Orbit solution date (soln_date, UTC) |
2022-04-11T23:22:27Z |
| Obs used |
61 |
| NEO |
- |
| M1 |
18.000 |
| K1 |
10.000 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-09-25T12:51:09.792000Z |
| Discovery magnitude (MPC) |
20.70 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
オスキュレーティング軌道要素
| 項目 |
値 |
| Epoch (epoch_cal, TDB) |
2019-10-03.0000000 |
| e |
0.47064656 |
| q (au) |
1.806781 |
| a (au) |
3.413185 |
| i (deg) |
8.692614 |
| Ω (om, deg) |
150.170410 |
| ω (w, deg) |
212.950167 |
| M (ma, deg) |
5.924433 |
等級
散乱 + 全体線形
$$
M_a = (17.619 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
モデル定数
| 項目 |
値 |
| H0 |
17.619 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-0.552 |
| k |
0.800 |
| 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
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) |
| 2026-07-29 00:00 |
06:36:26.91 |
+17:25:47.2 |
HIP 31635 |
13.29 |
| 2026-07-29 12:00 |
06:37:19.53 |
+17:24:59.9 |
HIP 31635 |
9.06 |
| 2026-07-30 00:00 |
06:38:12.03 |
+17:24:11.5 |
HIP 31635 |
17.41 |
| 2026-07-30 12:00 |
06:39:04.40 |
+17:23:22.0 |
HIP 31857 |
20.21 |
| 2026-07-31 00:00 |
06:39:56.65 |
+17:22:31.4 |
HIP 31950 |
18.37 |
| 2026-07-31 12:00 |
06:40:48.77 |
+17:21:39.7 |
HIP 31950 |
17.11 |
| 2026-08-01 00:00 |
06:41:40.76 |
+17:20:46.9 |
HIP 32104 |
20.74 |
| 2026-08-01 12:00 |
06:42:32.63 |
+17:19:53.1 |
HIP 32104 |
18.95 |
| 2026-08-02 00:00 |
06:43:24.38 |
+17:18:58.2 |
HIP 32104 |
24.40 |
| 2026-08-02 12:00 |
06:44:15.99 |
+17:18:02.2 |
HIP 32224 |
32.41 |
| 2026-08-03 00:00 |
06:45:07.48 |
+17:17:05.2 |
HIP 32465 |
20.97 |
| 2026-08-03 12:00 |
06:45:58.84 |
+17:16:07.1 |
HIP 32465 |
10.04 |
| 2026-08-04 00:00 |
06:46:50.07 |
+17:15:08.0 |
HIP 32465 |
8.02 |
| 2026-08-04 12:00 |
06:47:41.18 |
+17:14:07.9 |
HIP 32514 |
10.61 |
| 2026-08-05 00:00 |
06:48:32.15 |
+17:13:06.8 |
HIP 32514 |
21.05 |
| 2026-08-05 12:00 |
06:49:22.99 |
+17:12:04.7 |
HIP 32783 |
25.50 |
| 2026-08-06 00:00 |
06:50:13.71 |
+17:11:01.5 |
HIP 32783 |
24.43 |
| 2026-08-06 12:00 |
06:51:04.29 |
+17:09:57.4 |
HIP 32783 |
28.94 |
| 2026-08-07 00:00 |
06:51:54.74 |
+17:08:52.2 |
HIP 32946 |
31.63 |
| 2026-08-07 12:00 |
06:52:45.05 |
+17:07:46.2 |
HIP 33230 |
31.80 |
| 2026-08-08 00:00 |
06:53:35.24 |
+17:06:39.1 |
HIP 33230 |
20.15 |
| 2026-08-08 12:00 |
06:54:25.29 |
+17:05:31.1 |
HIP 33230 |
9.52 |
| 2026-08-09 00:00 |
06:55:15.20 |
+17:04:22.1 |
HIP 33230 |
7.98 |
| 2026-08-09 12:00 |
06:56:04.98 |
+17:03:12.2 |
HIP 33230 |
17.96 |
| 2026-08-10 00:00 |
06:56:54.62 |
+17:02:01.3 |
HIP 33527 |
25.14 |
| 2026-08-10 12:00 |
06:57:44.12 |
+17:00:49.6 |
HIP 33527 |
18.08 |
| 2026-08-11 00:00 |
06:58:33.49 |
+16:59:36.9 |
HIP 33527 |
17.44 |
| 2026-08-11 12:00 |
06:59:22.72 |
+16:58:23.3 |
HIP 33752 |
18.29 |
| 2026-08-12 00:00 |
07:00:11.81 |
+16:57:08.8 |
HIP 33752 |
6.54 |
| 2026-08-12 12:00 |
07:01:00.75 |
+16:55:53.4 |
HIP 33752 |
5.43 |
| 2026-08-13 00:00 |
07:01:49.56 |
+16:54:37.2 |
HIP 33752 |
17.10 |
| 2026-08-13 12:00 |
07:02:38.23 |
+16:53:20.1 |
HIP 33937 |
12.92 |
| 2026-08-14 00:00 |
07:03:26.75 |
+16:52:02.1 |
HIP 33937 |
17.25 |
| 2026-08-14 12:00 |
07:04:15.13 |
+16:50:43.3 |
HIP 34128 |
12.94 |
| 2026-08-15 00:00 |
07:05:03.36 |
+16:49:23.7 |
HIP 34128 |
14.73 |
| 2026-08-15 12:00 |
07:05:51.45 |
+16:48:03.2 |
HIP 34128 |
23.13 |
| 2026-08-16 00:00 |
07:06:39.39 |
+16:46:42.0 |
HIP 34484 |
31.46 |
| 2026-08-16 12:00 |
07:07:27.19 |
+16:45:19.9 |
HIP 34484 |
21.14 |
| 2026-08-17 00:00 |
07:08:14.84 |
+16:43:57.0 |
HIP 34484 |
13.05 |
| 2026-08-17 12:00 |
07:09:02.35 |
+16:42:33.4 |
HIP 34540 |
10.68 |
| 2026-08-18 00:00 |
07:09:49.71 |
+16:41:08.9 |
HIP 34540 |
10.49 |
| 2026-08-18 12:00 |
07:10:36.91 |
+16:39:43.7 |
HIP 34540 |
19.14 |
| 2026-08-19 00:00 |
07:11:23.97 |
+16:38:17.8 |
HIP 34763 |
21.01 |