메타데이터
| 항목 |
값 |
| Designation |
P/2019 A1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2018-10-11T01:01:39.613440Z |
| Orbit solution date (soln_date, UTC) |
2021-05-31T22:43:01Z |
| Obs used |
63 |
| NEO |
- |
| M1 |
17.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-01-03T15:02:41.568000Z |
| Discovery magnitude (MPC) |
20.50 w |
| Discovery observatory (MPC) |
F51 · Pan-STARRS 1, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-01-18.0000000 |
| e |
0.56892834 |
| q (au) |
2.211667 |
| a (au) |
5.130625 |
| i (deg) |
13.743622 |
| Ω (om, deg) |
312.299496 |
| ω (w, deg) |
150.846750 |
| M (ma, deg) |
8.392589 |
밝기
산란 + 전체 선형
$$
M_a = (19.446 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.446 |
| n |
2.000 |
| gf |
0.999 |
| gb |
-0.718 |
| k |
0.800 |
| δ90 |
10.000 |
| 파라미터 |
기호 |
범위 |
설명 |
| 태양·지구거리 1 AU에서의 절대등급 |
H0 |
-5 to 20 |
혜성의 고유 밝기 |
| 광도 기울기 파라미터 |
n |
2 to 6 |
태양거리 변화에 따른 밝기 변화율 |
| 전방 산란 비대칭 계수 |
gf |
0.8 to 1 |
전방 산란의 강도 |
| 후방 산란 비대칭 계수 |
gb |
-1 to -0.5 |
후방 산란의 강도 |
| 분할 계수 |
k |
0.8 to 1 |
전·후방 산란 기여도 비율 |
| 먼지/가스 밝기 비 |
δ90 |
1 to 10 |
코마에서 먼지 산란 대비 가스 방출의 상대 기여 |
참고: EPSC-DPS2025-160
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-06-01 00:00 |
20:53:26.53 |
-19:53:49.2 |
HIP 103018 |
22.49 |
| 2026-06-01 12:00 |
20:53:22.28 |
-19:53:59.4 |
HIP 103018 |
21.88 |
| 2026-06-02 00:00 |
20:53:17.89 |
-19:54:10.2 |
HIP 103018 |
21.29 |
| 2026-06-02 12:00 |
20:53:13.36 |
-19:54:21.4 |
HIP 103018 |
20.72 |
| 2026-06-03 00:00 |
20:53:08.70 |
-19:54:33.1 |
HIP 103018 |
20.18 |
| 2026-06-03 12:00 |
20:53:03.90 |
-19:54:45.2 |
HIP 103018 |
19.67 |
| 2026-06-04 00:00 |
20:52:58.96 |
-19:54:57.8 |
HIP 103018 |
19.21 |
| 2026-06-04 12:00 |
20:52:53.89 |
-19:55:11.0 |
HIP 103018 |
18.80 |
| 2026-06-05 00:00 |
20:52:48.68 |
-19:55:24.5 |
HIP 103018 |
18.46 |
| 2026-06-05 12:00 |
20:52:43.33 |
-19:55:38.6 |
HIP 103018 |
18.19 |
| 2026-06-06 00:00 |
20:52:37.85 |
-19:55:53.1 |
HIP 103018 |
18.01 |
| 2026-06-06 12:00 |
20:52:32.23 |
-19:56:08.0 |
HIP 103018 |
17.93 |
| 2026-06-07 00:00 |
20:52:26.48 |
-19:56:23.5 |
HIP 103018 |
17.94 |
| 2026-06-07 12:00 |
20:52:20.59 |
-19:56:39.3 |
HIP 103018 |
18.07 |
| 2026-06-08 00:00 |
20:52:14.57 |
-19:56:55.7 |
HIP 103018 |
18.32 |
| 2026-06-08 12:00 |
20:52:08.41 |
-19:57:12.5 |
HIP 103018 |
18.68 |
| 2026-06-09 00:00 |
20:52:02.12 |
-19:57:29.7 |
HIP 103018 |
19.16 |
| 2026-06-09 12:00 |
20:51:55.69 |
-19:57:47.4 |
HIP 103018 |
19.77 |
| 2026-06-10 00:00 |
20:51:49.13 |
-19:58:05.5 |
HIP 103018 |
20.48 |
| 2026-06-10 12:00 |
20:51:42.44 |
-19:58:24.0 |
HIP 103018 |
21.31 |
| 2026-06-11 00:00 |
20:51:35.61 |
-19:58:43.0 |
HIP 103018 |
22.24 |
| 2026-06-11 12:00 |
20:51:28.65 |
-19:59:02.5 |
HIP 103018 |
23.28 |
| 2026-06-12 00:00 |
20:51:21.56 |
-19:59:22.3 |
HIP 103018 |
24.40 |
| 2026-06-12 12:00 |
20:51:14.34 |
-19:59:42.6 |
HIP 103018 |
25.61 |
| 2026-06-13 00:00 |
20:51:06.99 |
-20:00:03.3 |
HIP 103018 |
26.90 |
| 2026-06-13 12:00 |
20:50:59.51 |
-20:00:24.4 |
HIP 103018 |
28.27 |
| 2026-06-14 00:00 |
20:50:51.89 |
-20:00:46.0 |
HIP 103018 |
29.71 |
| 2026-06-14 12:00 |
20:50:44.15 |
-20:01:07.9 |
HIP 103018 |
31.22 |
| 2026-06-15 00:00 |
20:50:36.28 |
-20:01:30.2 |
HIP 103018 |
32.79 |
| 2026-06-15 12:00 |
20:50:28.28 |
-20:01:53.0 |
HIP 103018 |
34.41 |
| 2026-06-16 00:00 |
20:50:20.15 |
-20:02:16.1 |
HIP 103018 |
36.10 |
| 2026-06-16 12:00 |
20:50:11.90 |
-20:02:39.7 |
HIP 102762 |
37.60 |
| 2026-06-17 00:00 |
20:50:03.52 |
-20:03:03.6 |
HIP 102762 |
36.57 |
| 2026-06-17 12:00 |
20:49:55.02 |
-20:03:27.9 |
HIP 102762 |
35.61 |
| 2026-06-18 00:00 |
20:49:46.40 |
-20:03:52.5 |
HIP 102762 |
34.73 |
| 2026-06-18 12:00 |
20:49:37.65 |
-20:04:17.6 |
HIP 102762 |
33.94 |
| 2026-06-19 00:00 |
20:49:28.78 |
-20:04:43.0 |
HIP 102762 |
33.26 |
| 2026-06-19 12:00 |
20:49:19.78 |
-20:05:08.7 |
HIP 102723 |
32.49 |
| 2026-06-20 00:00 |
20:49:10.67 |
-20:05:34.9 |
HIP 102723 |
31.75 |
| 2026-06-20 12:00 |
20:49:01.44 |
-20:06:01.3 |
HIP 102723 |
31.14 |
| 2026-06-21 00:00 |
20:48:52.09 |
-20:06:28.1 |
HIP 102723 |
30.68 |
| 2026-06-21 12:00 |
20:48:42.62 |
-20:06:55.3 |
HIP 102723 |
30.37 |
| 2026-06-22 00:00 |
20:48:33.04 |
-20:07:22.7 |
HIP 102723 |
30.22 |