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) |
| 2026-05-12 00:00 |
20:19:23.47 |
-44:51:26.5 |
HIP 100209 |
6.38 |
| 2026-05-12 12:00 |
20:19:27.73 |
-44:53:56.2 |
HIP 100209 |
8.78 |
| 2026-05-13 00:00 |
20:19:31.72 |
-44:56:26.5 |
HIP 100209 |
11.27 |
| 2026-05-13 12:00 |
20:19:35.45 |
-44:58:57.5 |
HIP 100209 |
13.82 |
| 2026-05-14 00:00 |
20:19:38.92 |
-45:01:29.2 |
HIP 100209 |
16.39 |
| 2026-05-14 12:00 |
20:19:42.12 |
-45:04:01.5 |
HIP 100209 |
18.97 |
| 2026-05-15 00:00 |
20:19:45.05 |
-45:06:34.4 |
HIP 100395 |
20.74 |
| 2026-05-15 12:00 |
20:19:47.71 |
-45:09:07.9 |
HIP 100395 |
21.35 |
| 2026-05-16 00:00 |
20:19:50.10 |
-45:11:41.9 |
HIP 100395 |
22.31 |
| 2026-05-16 12:00 |
20:19:52.22 |
-45:14:16.6 |
HIP 100336 |
21.39 |
| 2026-05-17 00:00 |
20:19:54.06 |
-45:16:51.8 |
HIP 100336 |
19.03 |
| 2026-05-17 12:00 |
20:19:55.64 |
-45:19:27.6 |
HIP 100336 |
16.75 |
| 2026-05-18 00:00 |
20:19:56.94 |
-45:22:03.9 |
HIP 100336 |
14.61 |
| 2026-05-18 12:00 |
20:19:57.97 |
-45:24:40.7 |
HIP 100336 |
12.69 |
| 2026-05-19 00:00 |
20:19:58.72 |
-45:27:18.0 |
HIP 100336 |
11.10 |
| 2026-05-19 12:00 |
20:19:59.20 |
-45:29:55.8 |
HIP 100336 |
9.99 |
| 2026-05-20 00:00 |
20:19:59.40 |
-45:32:34.1 |
HIP 100336 |
9.56 |
| 2026-05-20 12:00 |
20:19:59.33 |
-45:35:12.8 |
HIP 100336 |
9.89 |
| 2026-05-21 00:00 |
20:19:58.98 |
-45:37:52.0 |
HIP 100336 |
10.91 |
| 2026-05-21 12:00 |
20:19:58.35 |
-45:40:31.6 |
HIP 100336 |
12.48 |
| 2026-05-22 00:00 |
20:19:57.44 |
-45:43:11.6 |
HIP 100336 |
14.40 |
| 2026-05-22 12:00 |
20:19:56.26 |
-45:45:51.9 |
HIP 100336 |
16.57 |
| 2026-05-23 00:00 |
20:19:54.80 |
-45:48:32.7 |
HIP 100336 |
18.90 |
| 2026-05-23 12:00 |
20:19:53.06 |
-45:51:13.8 |
HIP 100336 |
21.35 |
| 2026-05-24 00:00 |
20:19:51.04 |
-45:53:55.2 |
HIP 100036 |
22.30 |
| 2026-05-24 12:00 |
20:19:48.74 |
-45:56:37.0 |
HIP 100036 |
21.63 |
| 2026-05-25 00:00 |
20:19:46.16 |
-45:59:19.1 |
HIP 100036 |
21.24 |
| 2026-05-25 12:00 |
20:19:43.30 |
-46:02:01.4 |
HIP 100036 |
21.15 |
| 2026-05-26 00:00 |
20:19:40.16 |
-46:04:44.1 |
HIP 100223 |
20.94 |
| 2026-05-26 12:00 |
20:19:36.74 |
-46:07:26.9 |
HIP 100223 |
18.22 |
| 2026-05-27 00:00 |
20:19:33.03 |
-46:10:10.0 |
HIP 100223 |
15.52 |
| 2026-05-27 12:00 |
20:19:29.05 |
-46:12:53.4 |
HIP 100223 |
12.86 |
| 2026-05-28 00:00 |
20:19:24.78 |
-46:15:36.9 |
HIP 100223 |
10.29 |
| 2026-05-28 12:00 |
20:19:20.23 |
-46:18:20.6 |
HIP 100223 |
7.90 |
| 2026-05-29 00:00 |
20:19:15.40 |
-46:21:04.4 |
HIP 100223 |
5.94 |
| 2026-05-29 12:00 |
20:19:10.29 |
-46:23:48.4 |
HIP 100223 |
5.01 |
| 2026-05-30 00:00 |
20:19:04.89 |
-46:26:32.5 |
HIP 100223 |
5.64 |
| 2026-05-30 12:00 |
20:18:59.21 |
-46:29:16.7 |
HIP 100223 |
7.48 |
| 2026-05-31 00:00 |
20:18:53.25 |
-46:32:01.0 |
HIP 100223 |
9.88 |
| 2026-05-31 12:00 |
20:18:47.01 |
-46:34:45.4 |
HIP 100223 |
12.54 |
| 2026-06-01 00:00 |
20:18:40.48 |
-46:37:29.8 |
HIP 100223 |
15.34 |
| 2026-06-01 12:00 |
20:18:33.67 |
-46:40:14.2 |
HIP 100223 |
18.21 |
| 2026-06-02 00:00 |
20:18:26.57 |
-46:42:58.6 |
HIP 100223 |
21.14 |