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) |
| 2026-06-01 00:00 |
16:32:38.72 |
-17:23:44.0 |
HIP 80998 |
15.30 |
| 2026-06-01 12:00 |
16:32:22.88 |
-17:23:10.1 |
HIP 80998 |
15.92 |
| 2026-06-02 00:00 |
16:32:07.04 |
-17:22:36.3 |
HIP 80998 |
17.37 |
| 2026-06-02 12:00 |
16:31:51.21 |
-17:22:02.8 |
HIP 80998 |
19.47 |
| 2026-06-03 00:00 |
16:31:35.39 |
-17:21:29.4 |
HIP 80940 |
21.33 |
| 2026-06-03 12:00 |
16:31:19.59 |
-17:20:56.2 |
HIP 80940 |
22.34 |
| 2026-06-04 00:00 |
16:31:03.81 |
-17:20:23.1 |
HIP 80940 |
23.91 |
| 2026-06-04 12:00 |
16:30:48.04 |
-17:19:50.3 |
HIP 80940 |
25.95 |
| 2026-06-05 00:00 |
16:30:32.30 |
-17:19:17.7 |
HIP 80711 |
27.35 |
| 2026-06-05 12:00 |
16:30:16.58 |
-17:18:45.3 |
HIP 80711 |
24.07 |
| 2026-06-06 00:00 |
16:30:00.88 |
-17:18:13.1 |
HIP 80711 |
20.98 |
| 2026-06-06 12:00 |
16:29:45.21 |
-17:17:41.1 |
HIP 80711 |
18.15 |
| 2026-06-07 00:00 |
16:29:29.58 |
-17:17:09.3 |
HIP 80711 |
15.73 |
| 2026-06-07 12:00 |
16:29:13.98 |
-17:16:37.8 |
HIP 80711 |
13.92 |
| 2026-06-08 00:00 |
16:28:58.41 |
-17:16:06.4 |
HIP 80711 |
12.97 |
| 2026-06-08 12:00 |
16:28:42.88 |
-17:15:35.4 |
HIP 80711 |
13.07 |
| 2026-06-09 00:00 |
16:28:27.39 |
-17:15:04.5 |
HIP 80711 |
14.18 |
| 2026-06-09 12:00 |
16:28:11.95 |
-17:14:33.9 |
HIP 80711 |
16.09 |
| 2026-06-10 00:00 |
16:27:56.55 |
-17:14:03.6 |
HIP 80711 |
18.55 |
| 2026-06-10 12:00 |
16:27:41.19 |
-17:13:33.5 |
HIP 80711 |
21.37 |
| 2026-06-11 00:00 |
16:27:25.89 |
-17:13:03.7 |
HIP 80711 |
24.41 |
| 2026-06-11 12:00 |
16:27:10.63 |
-17:12:34.2 |
HIP 80711 |
27.59 |
| 2026-06-12 00:00 |
16:26:55.43 |
-17:12:04.9 |
HIP 80711 |
30.87 |
| 2026-06-12 12:00 |
16:26:40.29 |
-17:11:36.0 |
HIP 80711 |
34.21 |
| 2026-06-13 00:00 |
16:26:25.21 |
-17:11:07.3 |
HIP 80403 |
33.48 |
| 2026-06-13 12:00 |
16:26:10.19 |
-17:10:38.9 |
HIP 80403 |
31.27 |
| 2026-06-14 00:00 |
16:25:55.23 |
-17:10:10.8 |
HIP 80403 |
29.34 |
| 2026-06-14 12:00 |
16:25:40.33 |
-17:09:43.0 |
HIP 80403 |
27.76 |
| 2026-06-15 00:00 |
16:25:25.51 |
-17:09:15.5 |
HIP 80403 |
26.56 |
| 2026-06-15 12:00 |
16:25:10.75 |
-17:08:48.3 |
HIP 80403 |
25.81 |
| 2026-06-16 00:00 |
16:24:56.07 |
-17:08:21.4 |
HIP 80403 |
25.53 |
| 2026-06-16 12:00 |
16:24:41.47 |
-17:07:54.9 |
HIP 80403 |
25.73 |
| 2026-06-17 00:00 |
16:24:26.94 |
-17:07:28.7 |
HIP 80240 |
23.19 |
| 2026-06-17 12:00 |
16:24:12.49 |
-17:07:02.8 |
HIP 80240 |
19.76 |
| 2026-06-18 00:00 |
16:23:58.12 |
-17:06:37.3 |
HIP 80240 |
16.37 |
| 2026-06-18 12:00 |
16:23:43.84 |
-17:06:12.1 |
HIP 80240 |
13.03 |
| 2026-06-19 00:00 |
16:23:29.64 |
-17:05:47.2 |
HIP 80240 |
9.79 |
| 2026-06-19 12:00 |
16:23:15.53 |
-17:05:22.8 |
HIP 80240 |
6.74 |
| 2026-06-20 00:00 |
16:23:01.51 |
-17:04:58.6 |
HIP 80240 |
4.27 |
| 2026-06-20 12:00 |
16:22:47.59 |
-17:04:34.8 |
HIP 80240 |
3.72 |
| 2026-06-21 00:00 |
16:22:33.75 |
-17:04:11.4 |
HIP 80240 |
5.63 |
| 2026-06-21 12:00 |
16:22:20.02 |
-17:03:48.4 |
HIP 80240 |
8.45 |
| 2026-06-22 00:00 |
16:22:06.38 |
-17:03:25.7 |
HIP 80240 |
11.51 |