메타데이터
| 항목 |
값 |
| Designation |
P/2019 W1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2019-05-08T00:22:04.598400Z |
| Orbit solution date (soln_date, UTC) |
2023-01-14T00:13:19Z |
| Obs used |
78 |
| NEO |
- |
| M1 |
16.300 |
| K1 |
4.500 |
| PC |
- |
| Discovery observation (MPC, UTC) |
2019-11-29T12:59:22.617600Z |
| Discovery magnitude (MPC) |
20.54 w |
| Discovery observatory (MPC) |
F52 · Pan-STARRS 2, Haleakala |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2019-08-27.0000000 |
| e |
0.26600352 |
| q (au) |
3.339892 |
| a (au) |
4.550284 |
| i (deg) |
23.462131 |
| Ω (om, deg) |
35.426528 |
| ω (w, deg) |
18.751304 |
| M (ma, deg) |
11.269621 |
밝기
산란 + 전체 선형
$$
M_a = (19.870 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.870 |
| n |
2.000 |
| gf |
1.000 |
| gb |
-0.848 |
| 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
찾아보기
천체력
| Date/Time (UTC) |
RA (J2000) |
Dec (J2000) |
Nearest HIP |
Dist from HIP (arcmin) |
| 2026-07-29 00:00 |
19:41:10.22 |
-50:11:25.6 |
HIP 96746 |
18.08 |
| 2026-07-29 12:00 |
19:40:45.71 |
-50:11:34.5 |
HIP 96746 |
16.17 |
| 2026-07-30 00:00 |
19:40:21.29 |
-50:11:41.3 |
HIP 96746 |
15.03 |
| 2026-07-30 12:00 |
19:39:56.98 |
-50:11:46.0 |
HIP 96746 |
14.84 |
| 2026-07-31 00:00 |
19:39:32.77 |
-50:11:48.5 |
HIP 96746 |
15.61 |
| 2026-07-31 12:00 |
19:39:08.66 |
-50:11:48.9 |
HIP 96746 |
17.20 |
| 2026-08-01 00:00 |
19:38:44.67 |
-50:11:47.1 |
HIP 96591 |
16.67 |
| 2026-08-01 12:00 |
19:38:20.80 |
-50:11:43.2 |
HIP 96591 |
15.92 |
| 2026-08-02 00:00 |
19:37:57.05 |
-50:11:37.2 |
HIP 96591 |
16.09 |
| 2026-08-02 12:00 |
19:37:33.43 |
-50:11:29.1 |
HIP 96591 |
17.16 |
| 2026-08-03 00:00 |
19:37:09.94 |
-50:11:18.9 |
HIP 96591 |
18.94 |
| 2026-08-03 12:00 |
19:36:46.58 |
-50:11:06.6 |
HIP 96319 |
16.99 |
| 2026-08-04 00:00 |
19:36:23.37 |
-50:10:52.2 |
HIP 96319 |
13.32 |
| 2026-08-04 12:00 |
19:36:00.30 |
-50:10:35.7 |
HIP 96319 |
9.70 |
| 2026-08-05 00:00 |
19:35:37.38 |
-50:10:17.1 |
HIP 96319 |
6.18 |
| 2026-08-05 12:00 |
19:35:14.61 |
-50:09:56.5 |
HIP 96319 |
3.09 |
| 2026-08-06 00:00 |
19:34:52.00 |
-50:09:33.8 |
HIP 96319 |
2.73 |
| 2026-08-06 12:00 |
19:34:29.56 |
-50:09:09.1 |
HIP 96319 |
5.61 |
| 2026-08-07 00:00 |
19:34:07.28 |
-50:08:42.3 |
HIP 96319 |
9.01 |
| 2026-08-07 12:00 |
19:33:45.18 |
-50:08:13.5 |
HIP 96319 |
12.49 |
| 2026-08-08 00:00 |
19:33:23.25 |
-50:07:42.7 |
HIP 96319 |
15.98 |
| 2026-08-08 12:00 |
19:33:01.50 |
-50:07:09.9 |
HIP 96319 |
19.47 |
| 2026-08-09 00:00 |
19:32:39.93 |
-50:06:35.1 |
HIP 96319 |
22.95 |
| 2026-08-09 12:00 |
19:32:18.56 |
-50:05:58.2 |
HIP 95918 |
21.89 |
| 2026-08-10 00:00 |
19:31:57.38 |
-50:05:19.5 |
HIP 95918 |
18.73 |
| 2026-08-10 12:00 |
19:31:36.39 |
-50:04:38.7 |
HIP 95918 |
15.71 |
| 2026-08-11 00:00 |
19:31:15.61 |
-50:03:56.0 |
HIP 95918 |
12.89 |
| 2026-08-11 12:00 |
19:30:55.03 |
-50:03:11.4 |
HIP 95918 |
10.41 |
| 2026-08-12 00:00 |
19:30:34.67 |
-50:02:24.9 |
HIP 95918 |
8.57 |
| 2026-08-12 12:00 |
19:30:14.51 |
-50:01:36.5 |
HIP 95918 |
7.77 |
| 2026-08-13 00:00 |
19:29:54.58 |
-50:00:46.1 |
HIP 95918 |
8.30 |
| 2026-08-13 12:00 |
19:29:34.86 |
-49:59:53.9 |
HIP 95795 |
9.02 |
| 2026-08-14 00:00 |
19:29:15.38 |
-49:58:59.9 |
HIP 95795 |
6.81 |
| 2026-08-14 12:00 |
19:28:56.11 |
-49:58:04.0 |
HIP 95795 |
5.68 |
| 2026-08-15 00:00 |
19:28:37.09 |
-49:57:06.2 |
HIP 95795 |
6.21 |
| 2026-08-15 12:00 |
19:28:18.29 |
-49:56:06.7 |
HIP 95795 |
8.04 |
| 2026-08-16 00:00 |
19:27:59.74 |
-49:55:05.4 |
HIP 95795 |
10.50 |
| 2026-08-16 12:00 |
19:27:41.43 |
-49:54:02.3 |
HIP 95795 |
13.21 |
| 2026-08-17 00:00 |
19:27:23.36 |
-49:52:57.5 |
HIP 95532 |
14.22 |
| 2026-08-17 12:00 |
19:27:05.54 |
-49:51:50.9 |
HIP 95532 |
11.22 |
| 2026-08-18 00:00 |
19:26:47.97 |
-49:50:42.6 |
HIP 95532 |
8.32 |
| 2026-08-18 12:00 |
19:26:30.66 |
-49:49:32.6 |
HIP 95532 |
5.62 |
| 2026-08-19 00:00 |
19:26:13.60 |
-49:48:21.0 |
HIP 95532 |
3.55 |