메타데이터
| 항목 |
값 |
| Designation |
149P/Mueller 4 |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-02-18T16:52:27.373440Z |
| Orbit solution date (soln_date, UTC) |
2023-05-03T22:44:05Z |
| Obs used |
494 |
| NEO |
- |
| M1 |
15.500 |
| K1 |
4.500 |
| PC |
- |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2013-05-05.0000000 |
| e |
0.38831799 |
| q (au) |
2.646439 |
| a (au) |
4.326494 |
| i (deg) |
29.754798 |
| Ω (om, deg) |
145.255090 |
| ω (w, deg) |
43.567077 |
| M (ma, deg) |
128.282351 |
밝기
산란 + 전체 선형
$$
M_a = (16.267 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
16.267 |
| n |
2.000 |
| gf |
0.996 |
| gb |
-0.532 |
| k |
0.800 |
| δ90 |
9.998 |
| 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) |
| 2026-06-01 00:00 |
07:43:08.87 |
+13:07:57.3 |
HIP 37723 |
22.79 |
| 2026-06-01 12:00 |
07:43:49.98 |
+13:09:40.0 |
HIP 37723 |
18.99 |
| 2026-06-02 00:00 |
07:44:31.19 |
+13:11:21.2 |
HIP 37723 |
20.18 |
| 2026-06-02 12:00 |
07:45:12.49 |
+13:13:01.0 |
HIP 37723 |
25.71 |
| 2026-06-03 00:00 |
07:45:53.90 |
+13:14:39.3 |
HIP 37920 |
29.55 |
| 2026-06-03 12:00 |
07:46:35.41 |
+13:16:16.1 |
HIP 38094 |
27.60 |
| 2026-06-04 00:00 |
07:47:17.01 |
+13:17:51.4 |
HIP 38094 |
17.59 |
| 2026-06-04 12:00 |
07:47:58.71 |
+13:19:25.3 |
HIP 38094 |
8.18 |
| 2026-06-05 00:00 |
07:48:40.50 |
+13:20:57.8 |
HIP 38147 |
5.36 |
| 2026-06-05 12:00 |
07:49:22.39 |
+13:22:28.7 |
HIP 38147 |
5.01 |
| 2026-06-06 00:00 |
07:50:04.38 |
+13:23:58.2 |
HIP 38147 |
15.31 |
| 2026-06-06 12:00 |
07:50:46.45 |
+13:25:26.3 |
HIP 38147 |
25.64 |
| 2026-06-07 00:00 |
07:51:28.62 |
+13:26:52.9 |
HIP 38208 |
35.98 |
| 2026-06-07 12:00 |
07:52:10.89 |
+13:28:18.1 |
HIP 38598 |
29.56 |
| 2026-06-08 00:00 |
07:52:53.24 |
+13:29:41.8 |
HIP 38598 |
19.61 |
| 2026-06-08 12:00 |
07:53:35.69 |
+13:31:04.1 |
HIP 38597 |
9.51 |
| 2026-06-09 00:00 |
07:54:18.22 |
+13:32:24.9 |
HIP 38597 |
3.02 |
| 2026-06-09 12:00 |
07:55:00.85 |
+13:33:44.3 |
HIP 38597 |
12.07 |
| 2026-06-10 00:00 |
07:55:43.56 |
+13:35:02.3 |
HIP 38730 |
15.13 |
| 2026-06-10 12:00 |
07:56:26.36 |
+13:36:18.9 |
HIP 38730 |
19.18 |
| 2026-06-11 00:00 |
07:57:09.25 |
+13:37:34.0 |
HIP 38874 |
21.53 |
| 2026-06-11 12:00 |
07:57:52.22 |
+13:38:47.7 |
HIP 38954 |
19.57 |
| 2026-06-12 00:00 |
07:58:35.28 |
+13:40:00.0 |
HIP 38954 |
21.06 |
| 2026-06-12 12:00 |
07:59:18.42 |
+13:41:10.9 |
HIP 39127 |
15.39 |
| 2026-06-13 00:00 |
08:00:01.65 |
+13:42:20.4 |
HIP 39127 |
6.44 |
| 2026-06-13 12:00 |
08:00:44.96 |
+13:43:28.4 |
HIP 39127 |
8.34 |
| 2026-06-14 00:00 |
08:01:28.35 |
+13:44:35.1 |
HIP 39247 |
17.93 |
| 2026-06-14 12:00 |
08:02:11.82 |
+13:45:40.4 |
HIP 39412 |
18.51 |
| 2026-06-15 00:00 |
08:02:55.38 |
+13:46:44.2 |
HIP 39412 |
9.68 |
| 2026-06-15 12:00 |
08:03:39.01 |
+13:47:46.7 |
HIP 39412 |
8.39 |
| 2026-06-16 00:00 |
08:04:22.72 |
+13:48:47.8 |
HIP 39507 |
2.93 |
| 2026-06-16 12:00 |
08:05:06.51 |
+13:49:47.6 |
HIP 39507 |
9.46 |
| 2026-06-17 00:00 |
08:05:50.37 |
+13:50:45.9 |
HIP 39507 |
19.97 |
| 2026-06-17 12:00 |
08:06:34.31 |
+13:51:42.9 |
HIP 39601 |
26.10 |
| 2026-06-18 00:00 |
08:07:18.32 |
+13:52:38.5 |
HIP 39874 |
24.87 |
| 2026-06-18 12:00 |
08:08:02.40 |
+13:53:32.8 |
HIP 39874 |
17.95 |
| 2026-06-19 00:00 |
08:08:46.56 |
+13:54:25.7 |
HIP 39874 |
16.00 |
| 2026-06-19 12:00 |
08:09:30.79 |
+13:55:17.3 |
HIP 39874 |
20.52 |
| 2026-06-20 00:00 |
08:10:15.09 |
+13:56:07.5 |
HIP 39874 |
28.60 |
| 2026-06-20 12:00 |
08:10:59.46 |
+13:56:56.4 |
HIP 40177 |
20.34 |
| 2026-06-21 00:00 |
08:11:43.90 |
+13:57:44.0 |
HIP 40177 |
9.62 |
| 2026-06-21 12:00 |
08:12:28.41 |
+13:58:30.2 |
HIP 40177 |
2.31 |
| 2026-06-22 00:00 |
08:13:12.98 |
+13:59:15.2 |
HIP 40232 |
4.36 |