메타데이터
| 항목 |
값 |
| Designation |
C/2005 P3 (SWAN) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2005-08-09T17:53:55.314240Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:51Z |
| Obs used |
78 |
| NEO |
- |
| M1 |
13.000 |
| K1 |
9.750 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-09-05.0000000 |
| e |
0.98765964 |
| q (au) |
0.525760 |
| a (au) |
42.604934 |
| i (deg) |
89.706006 |
| Ω (om, deg) |
242.778577 |
| ω (w, deg) |
32.144830 |
| M (ma, deg) |
0.093049 |
밝기
산란 + 전체 선형
$$
M_a = (11.682 + 2.791\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
11.682 |
| n |
2.791 |
| gf |
0.803 |
| gb |
-0.500 |
| 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 |
04:20:33.81 |
-00:15:35.2 |
HIP 20341 |
16.48 |
| 2026-06-01 12:00 |
04:20:36.81 |
-00:15:30.4 |
HIP 20341 |
15.83 |
| 2026-06-02 00:00 |
04:20:39.80 |
-00:15:25.6 |
HIP 20341 |
15.19 |
| 2026-06-02 12:00 |
04:20:42.79 |
-00:15:21.0 |
HIP 20341 |
14.57 |
| 2026-06-03 00:00 |
04:20:45.78 |
-00:15:16.6 |
HIP 20341 |
13.96 |
| 2026-06-03 12:00 |
04:20:48.77 |
-00:15:12.3 |
HIP 20341 |
13.37 |
| 2026-06-04 00:00 |
04:20:51.76 |
-00:15:08.2 |
HIP 20341 |
12.79 |
| 2026-06-04 12:00 |
04:20:54.74 |
-00:15:04.2 |
HIP 20341 |
12.24 |
| 2026-06-05 00:00 |
04:20:57.72 |
-00:15:00.3 |
HIP 20341 |
11.71 |
| 2026-06-05 12:00 |
04:21:00.70 |
-00:14:56.6 |
HIP 20341 |
11.21 |
| 2026-06-06 00:00 |
04:21:03.67 |
-00:14:53.1 |
HIP 20341 |
10.74 |
| 2026-06-06 12:00 |
04:21:06.64 |
-00:14:49.7 |
HIP 20341 |
10.31 |
| 2026-06-07 00:00 |
04:21:09.61 |
-00:14:46.4 |
HIP 20341 |
9.91 |
| 2026-06-07 12:00 |
04:21:12.57 |
-00:14:43.3 |
HIP 20341 |
9.56 |
| 2026-06-08 00:00 |
04:21:15.53 |
-00:14:40.4 |
HIP 20341 |
9.26 |
| 2026-06-08 12:00 |
04:21:18.49 |
-00:14:37.6 |
HIP 20341 |
9.01 |
| 2026-06-09 00:00 |
04:21:21.44 |
-00:14:34.9 |
HIP 20341 |
8.82 |
| 2026-06-09 12:00 |
04:21:24.38 |
-00:14:32.4 |
HIP 20341 |
8.69 |
| 2026-06-10 00:00 |
04:21:27.33 |
-00:14:30.0 |
HIP 20341 |
8.63 |
| 2026-06-10 12:00 |
04:21:30.26 |
-00:14:27.8 |
HIP 20341 |
8.63 |
| 2026-06-11 00:00 |
04:21:33.20 |
-00:14:25.8 |
HIP 20341 |
8.69 |
| 2026-06-11 12:00 |
04:21:36.12 |
-00:14:23.9 |
HIP 20341 |
8.82 |
| 2026-06-12 00:00 |
04:21:39.04 |
-00:14:22.1 |
HIP 20341 |
9.01 |
| 2026-06-12 12:00 |
04:21:41.96 |
-00:14:20.6 |
HIP 20341 |
9.25 |
| 2026-06-13 00:00 |
04:21:44.87 |
-00:14:19.1 |
HIP 20341 |
9.55 |
| 2026-06-13 12:00 |
04:21:47.77 |
-00:14:17.8 |
HIP 20341 |
9.89 |
| 2026-06-14 00:00 |
04:21:50.67 |
-00:14:16.7 |
HIP 20341 |
10.27 |
| 2026-06-14 12:00 |
04:21:53.56 |
-00:14:15.7 |
HIP 20341 |
10.69 |
| 2026-06-15 00:00 |
04:21:56.45 |
-00:14:14.9 |
HIP 20341 |
11.14 |
| 2026-06-15 12:00 |
04:21:59.32 |
-00:14:14.2 |
HIP 20341 |
11.62 |
| 2026-06-16 00:00 |
04:22:02.19 |
-00:14:13.7 |
HIP 20341 |
12.13 |
| 2026-06-16 12:00 |
04:22:05.06 |
-00:14:13.3 |
HIP 20341 |
12.65 |
| 2026-06-17 00:00 |
04:22:07.91 |
-00:14:13.1 |
HIP 20341 |
13.19 |
| 2026-06-17 12:00 |
04:22:10.76 |
-00:14:13.1 |
HIP 20341 |
13.75 |
| 2026-06-18 00:00 |
04:22:13.60 |
-00:14:13.2 |
HIP 20341 |
14.32 |
| 2026-06-18 12:00 |
04:22:16.43 |
-00:14:13.5 |
HIP 20341 |
14.90 |
| 2026-06-19 00:00 |
04:22:19.25 |
-00:14:13.9 |
HIP 20341 |
15.50 |
| 2026-06-19 12:00 |
04:22:22.07 |
-00:14:14.4 |
HIP 20341 |
16.10 |
| 2026-06-20 00:00 |
04:22:24.87 |
-00:14:15.2 |
HIP 20341 |
16.71 |
| 2026-06-20 12:00 |
04:22:27.67 |
-00:14:16.0 |
HIP 20341 |
17.32 |
| 2026-06-21 00:00 |
04:22:30.46 |
-00:14:17.1 |
HIP 20341 |
17.95 |
| 2026-06-21 12:00 |
04:22:33.24 |
-00:14:18.2 |
HIP 20341 |
18.57 |
| 2026-06-22 00:00 |
04:22:36.00 |
-00:14:19.6 |
HIP 20422 |
18.89 |