메타데이터
| 항목 |
값 |
| Designation |
C/2006 M4 (SWAN) |
| Type |
C |
| Perihelion (tp_cal, UTC) |
2006-09-28T17:29:02.883840Z |
| Orbit solution date (soln_date, UTC) |
2021-04-15T23:30:58Z |
| Obs used |
1265 |
| NEO |
- |
| M1 |
11.000 |
| K1 |
7.250 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2006-11-10.0000000 |
| e |
1.00018505 |
| q (au) |
0.783008 |
| a (au) |
-4231.355299 |
| i (deg) |
111.823262 |
| Ω (om, deg) |
148.726842 |
| ω (w, deg) |
62.594371 |
| M (ma, deg) |
0.000151 |
밝기
산란 + 전체 선형
$$
M_a = (6.701 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
6.701 |
| n |
6.000 |
| gf |
1.000 |
| 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 |
22:05:07.37 |
-58:21:53.4 |
HIP 108968 |
12.49 |
| 2026-06-01 12:00 |
22:05:06.36 |
-58:22:28.2 |
HIP 108968 |
12.99 |
| 2026-06-02 00:00 |
22:05:05.30 |
-58:23:03.1 |
HIP 108968 |
13.50 |
| 2026-06-02 12:00 |
22:05:04.20 |
-58:23:38.0 |
HIP 108968 |
14.01 |
| 2026-06-03 00:00 |
22:05:03.06 |
-58:24:13.0 |
HIP 108910 |
14.26 |
| 2026-06-03 12:00 |
22:05:01.87 |
-58:24:48.0 |
HIP 108910 |
14.52 |
| 2026-06-04 00:00 |
22:05:00.64 |
-58:25:23.0 |
HIP 108910 |
14.80 |
| 2026-06-04 12:00 |
22:04:59.36 |
-58:25:58.1 |
HIP 108910 |
15.09 |
| 2026-06-05 00:00 |
22:04:58.04 |
-58:26:33.2 |
HIP 108910 |
15.40 |
| 2026-06-05 12:00 |
22:04:56.68 |
-58:27:08.3 |
HIP 108910 |
15.72 |
| 2026-06-06 00:00 |
22:04:55.27 |
-58:27:43.4 |
HIP 108910 |
16.06 |
| 2026-06-06 12:00 |
22:04:53.82 |
-58:28:18.5 |
HIP 108910 |
16.40 |
| 2026-06-07 00:00 |
22:04:52.32 |
-58:28:53.7 |
HIP 108910 |
16.77 |
| 2026-06-07 12:00 |
22:04:50.78 |
-58:29:28.9 |
HIP 108910 |
17.14 |
| 2026-06-08 00:00 |
22:04:49.20 |
-58:30:04.0 |
HIP 108910 |
17.52 |
| 2026-06-08 12:00 |
22:04:47.57 |
-58:30:39.2 |
HIP 108910 |
17.92 |
| 2026-06-09 00:00 |
22:04:45.90 |
-58:31:14.4 |
HIP 108910 |
18.32 |
| 2026-06-09 12:00 |
22:04:44.19 |
-58:31:49.6 |
HIP 108910 |
18.74 |
| 2026-06-10 00:00 |
22:04:42.43 |
-58:32:24.8 |
HIP 108910 |
19.16 |
| 2026-06-10 12:00 |
22:04:40.63 |
-58:33:00.0 |
HIP 109098 |
19.54 |
| 2026-06-11 00:00 |
22:04:38.78 |
-58:33:35.2 |
HIP 109098 |
19.17 |
| 2026-06-11 12:00 |
22:04:36.89 |
-58:34:10.3 |
HIP 109098 |
18.82 |
| 2026-06-12 00:00 |
22:04:34.96 |
-58:34:45.5 |
HIP 109098 |
18.49 |
| 2026-06-12 12:00 |
22:04:32.99 |
-58:35:20.7 |
HIP 109098 |
18.17 |
| 2026-06-13 00:00 |
22:04:30.97 |
-58:35:55.8 |
HIP 109098 |
17.88 |
| 2026-06-13 12:00 |
22:04:28.91 |
-58:36:30.9 |
HIP 109098 |
17.61 |
| 2026-06-14 00:00 |
22:04:26.80 |
-58:37:06.0 |
HIP 109098 |
17.36 |
| 2026-06-14 12:00 |
22:04:24.65 |
-58:37:41.1 |
HIP 109098 |
17.14 |
| 2026-06-15 00:00 |
22:04:22.46 |
-58:38:16.1 |
HIP 109098 |
16.95 |
| 2026-06-15 12:00 |
22:04:20.23 |
-58:38:51.1 |
HIP 109098 |
16.78 |
| 2026-06-16 00:00 |
22:04:17.96 |
-58:39:26.1 |
HIP 109098 |
16.64 |
| 2026-06-16 12:00 |
22:04:15.64 |
-58:40:01.1 |
HIP 109098 |
16.53 |
| 2026-06-17 00:00 |
22:04:13.28 |
-58:40:36.0 |
HIP 109098 |
16.45 |
| 2026-06-17 12:00 |
22:04:10.88 |
-58:41:10.8 |
HIP 109098 |
16.40 |
| 2026-06-18 00:00 |
22:04:08.44 |
-58:41:45.6 |
HIP 109098 |
16.39 |
| 2026-06-18 12:00 |
22:04:05.95 |
-58:42:20.4 |
HIP 109098 |
16.40 |
| 2026-06-19 00:00 |
22:04:03.43 |
-58:42:55.1 |
HIP 109098 |
16.45 |
| 2026-06-19 12:00 |
22:04:00.86 |
-58:43:29.8 |
HIP 109098 |
16.53 |
| 2026-06-20 00:00 |
22:03:58.25 |
-58:44:04.4 |
HIP 109098 |
16.63 |
| 2026-06-20 12:00 |
22:03:55.60 |
-58:44:39.0 |
HIP 109098 |
16.78 |
| 2026-06-21 00:00 |
22:03:52.91 |
-58:45:13.5 |
HIP 109098 |
16.95 |
| 2026-06-21 12:00 |
22:03:50.18 |
-58:45:47.9 |
HIP 109098 |
17.15 |
| 2026-06-22 00:00 |
22:03:47.41 |
-58:46:22.3 |
HIP 109098 |
17.38 |