P/2011 W1 (PANSTARRS)
메타데이터
| 항목 |
값 |
| Designation |
P/2011 W1 (PANSTARRS) |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2012-01-22T12:56:24.720000Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:31:58Z |
| Obs used |
171 |
| NEO |
- |
| M1 |
7.300 |
| K1 |
19.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2012-01-08.0000000 |
| e |
0.28865156 |
| q (au) |
3.312061 |
| a (au) |
4.656031 |
| i (deg) |
3.718613 |
| Ω (om, deg) |
161.883715 |
| ω (w, deg) |
282.472848 |
| M (ma, deg) |
358.573670 |
밝기
산란 + 전체 선형
$$
M_a = (8.152 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
8.152 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
1.000 |
| 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) |
| 2026-02-03 00:00 |
16:39:47.29 |
-18:41:09.8 |
HIP 81514 |
14.62 |
| 2026-02-03 12:00 |
16:40:03.55 |
-18:41:25.8 |
HIP 81514 |
17.84 |
| 2026-02-04 00:00 |
16:40:19.68 |
-18:41:41.5 |
HIP 81514 |
21.24 |
| 2026-02-04 12:00 |
16:40:35.70 |
-18:41:56.7 |
HIP 81758 |
24.10 |
| 2026-02-05 00:00 |
16:40:51.60 |
-18:42:11.5 |
HIP 81758 |
21.03 |
| 2026-02-05 12:00 |
16:41:07.37 |
-18:42:25.8 |
HIP 81758 |
18.24 |
| 2026-02-06 00:00 |
16:41:23.03 |
-18:42:39.8 |
HIP 81758 |
15.88 |
| 2026-02-06 12:00 |
16:41:38.56 |
-18:42:53.3 |
HIP 81758 |
14.12 |
| 2026-02-07 00:00 |
16:41:53.96 |
-18:43:06.4 |
HIP 81758 |
13.19 |
| 2026-02-07 12:00 |
16:42:09.24 |
-18:43:19.1 |
HIP 81758 |
13.24 |
| 2026-02-08 00:00 |
16:42:24.40 |
-18:43:31.4 |
HIP 81758 |
14.23 |
| 2026-02-08 12:00 |
16:42:39.43 |
-18:43:43.3 |
HIP 81758 |
15.98 |
| 2026-02-09 00:00 |
16:42:54.33 |
-18:43:54.7 |
HIP 81868 |
17.22 |
| 2026-02-09 12:00 |
16:43:09.11 |
-18:44:05.8 |
HIP 81868 |
16.69 |
| 2026-02-10 00:00 |
16:43:23.75 |
-18:44:16.4 |
HIP 81931 |
15.29 |
| 2026-02-10 12:00 |
16:43:38.26 |
-18:44:26.6 |
HIP 81931 |
13.52 |
| 2026-02-11 00:00 |
16:43:52.64 |
-18:44:36.4 |
HIP 81931 |
12.47 |
| 2026-02-11 12:00 |
16:44:06.89 |
-18:44:45.7 |
HIP 81931 |
12.30 |
| 2026-02-12 00:00 |
16:44:21.01 |
-18:44:54.7 |
HIP 81931 |
13.02 |
| 2026-02-12 12:00 |
16:44:34.99 |
-18:45:03.3 |
HIP 81931 |
14.47 |
| 2026-02-13 00:00 |
16:44:48.84 |
-18:45:11.4 |
HIP 81931 |
16.45 |
| 2026-02-13 12:00 |
16:45:02.55 |
-18:45:19.2 |
HIP 82035 |
17.08 |
| 2026-02-14 00:00 |
16:45:16.12 |
-18:45:26.5 |
HIP 82035 |
16.34 |
| 2026-02-14 12:00 |
16:45:29.56 |
-18:45:33.4 |
HIP 82035 |
16.22 |
| 2026-02-15 00:00 |
16:45:42.85 |
-18:45:40.0 |
HIP 82128 |
13.55 |
| 2026-02-15 12:00 |
16:45:56.01 |
-18:45:46.1 |
HIP 82128 |
10.45 |
| 2026-02-16 00:00 |
16:46:09.03 |
-18:45:51.8 |
HIP 82128 |
7.40 |
| 2026-02-16 12:00 |
16:46:21.90 |
-18:45:57.1 |
HIP 82128 |
4.43 |
| 2026-02-17 00:00 |
16:46:34.63 |
-18:46:02.1 |
HIP 82128 |
1.76 |
| 2026-02-17 12:00 |
16:46:47.22 |
-18:46:06.6 |
HIP 82128 |
2.16 |
| 2026-02-18 00:00 |
16:46:59.67 |
-18:46:10.7 |
HIP 82128 |
4.87 |
| 2026-02-18 12:00 |
16:47:11.96 |
-18:46:14.4 |
HIP 82128 |
7.72 |
| 2026-02-19 00:00 |
16:47:24.12 |
-18:46:17.8 |
HIP 82128 |
10.57 |
| 2026-02-19 12:00 |
16:47:36.12 |
-18:46:20.7 |
HIP 82128 |
13.40 |
| 2026-02-20 00:00 |
16:47:47.98 |
-18:46:23.3 |
HIP 82128 |
16.19 |
| 2026-02-20 12:00 |
16:47:59.69 |
-18:46:25.5 |
HIP 82128 |
18.96 |
| 2026-02-21 00:00 |
16:48:11.25 |
-18:46:27.3 |
HIP 82128 |
21.69 |
| 2026-02-21 12:00 |
16:48:22.66 |
-18:46:28.7 |
HIP 82128 |
24.39 |
| 2026-02-22 00:00 |
16:48:33.92 |
-18:46:29.7 |
HIP 82128 |
27.05 |
| 2026-02-22 12:00 |
16:48:45.03 |
-18:46:30.3 |
HIP 82128 |
29.68 |
| 2026-02-23 00:00 |
16:48:55.99 |
-18:46:30.6 |
HIP 82265 |
31.21 |
| 2026-02-23 12:00 |
16:49:06.79 |
-18:46:30.5 |
HIP 82433 |
29.18 |
| 2026-02-24 00:00 |
16:49:17.44 |
-18:46:30.0 |
HIP 82433 |
27.15 |