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) |
| 2026-09-20 00:00 |
10:36:29.78 |
+11:52:00.0 |
HIP 51985 |
12.16 |
| 2026-09-20 12:00 |
10:37:18.51 |
+11:50:29.7 |
HIP 51985 |
5.06 |
| 2026-09-21 00:00 |
10:38:07.24 |
+11:48:59.6 |
HIP 51985 |
13.86 |
| 2026-09-21 12:00 |
10:38:55.95 |
+11:47:29.4 |
HIP 51985 |
25.44 |
| 2026-09-22 00:00 |
10:39:44.66 |
+11:45:59.2 |
HIP 52257 |
22.74 |
| 2026-09-22 12:00 |
10:40:33.35 |
+11:44:29.1 |
HIP 52257 |
20.26 |
| 2026-09-23 00:00 |
10:41:22.04 |
+11:42:59.1 |
HIP 52257 |
24.33 |
| 2026-09-23 12:00 |
10:42:10.72 |
+11:41:29.1 |
HIP 52339 |
25.60 |
| 2026-09-24 00:00 |
10:42:59.38 |
+11:39:59.2 |
HIP 52525 |
28.28 |
| 2026-09-24 12:00 |
10:43:48.04 |
+11:38:29.3 |
HIP 52525 |
20.11 |
| 2026-09-25 00:00 |
10:44:36.68 |
+11:36:59.5 |
HIP 52525 |
17.26 |
| 2026-09-25 12:00 |
10:45:25.32 |
+11:35:29.8 |
HIP 52525 |
21.90 |
| 2026-09-26 00:00 |
10:46:13.94 |
+11:34:00.3 |
HIP 52707 |
23.60 |
| 2026-09-26 12:00 |
10:47:02.56 |
+11:32:30.8 |
HIP 52707 |
22.37 |
| 2026-09-27 00:00 |
10:47:51.16 |
+11:31:01.5 |
HIP 52833 |
23.04 |
| 2026-09-27 12:00 |
10:48:39.76 |
+11:29:32.3 |
HIP 52833 |
24.95 |
| 2026-09-28 00:00 |
10:49:28.34 |
+11:28:03.2 |
HIP 53039 |
25.44 |
| 2026-09-28 12:00 |
10:50:16.91 |
+11:26:34.3 |
HIP 53039 |
15.06 |
| 2026-09-29 00:00 |
10:51:05.47 |
+11:25:05.6 |
HIP 53039 |
9.67 |
| 2026-09-29 12:00 |
10:51:54.01 |
+11:23:37.0 |
HIP 53115 |
2.52 |
| 2026-09-30 00:00 |
10:52:42.55 |
+11:22:08.7 |
HIP 53200 |
5.27 |
| 2026-09-30 12:00 |
10:53:31.07 |
+11:20:40.5 |
HIP 53200 |
10.51 |
| 2026-10-01 00:00 |
10:54:19.58 |
+11:19:12.5 |
HIP 53200 |
21.92 |
| 2026-10-01 12:00 |
10:55:08.08 |
+11:17:44.8 |
HIP 53200 |
33.73 |
| 2026-10-02 00:00 |
10:55:56.57 |
+11:16:17.3 |
HIP 53625 |
44.88 |
| 2026-10-02 12:00 |
10:56:45.04 |
+11:14:50.0 |
HIP 53625 |
35.49 |
| 2026-10-03 00:00 |
10:57:33.50 |
+11:13:23.0 |
HIP 53625 |
28.15 |
| 2026-10-03 12:00 |
10:58:21.95 |
+11:11:56.2 |
HIP 53625 |
24.75 |
| 2026-10-04 00:00 |
10:59:10.38 |
+11:10:29.7 |
HIP 53625 |
26.83 |
| 2026-10-04 12:00 |
10:59:58.80 |
+11:09:03.5 |
HIP 53872 |
29.11 |
| 2026-10-05 00:00 |
11:00:47.20 |
+11:07:37.7 |
HIP 53872 |
21.70 |
| 2026-10-05 12:00 |
11:01:35.59 |
+11:06:12.1 |
HIP 53872 |
19.51 |
| 2026-10-06 00:00 |
11:02:23.97 |
+11:04:46.9 |
HIP 53872 |
24.01 |
| 2026-10-06 12:00 |
11:03:12.32 |
+11:03:22.0 |
HIP 54055 |
26.66 |
| 2026-10-07 00:00 |
11:04:00.66 |
+11:01:57.4 |
HIP 54186 |
20.27 |
| 2026-10-07 12:00 |
11:04:48.99 |
+11:00:33.3 |
HIP 54186 |
14.75 |
| 2026-10-08 00:00 |
11:05:37.29 |
+10:59:09.5 |
HIP 54186 |
17.58 |
| 2026-10-08 12:00 |
11:06:25.58 |
+10:57:46.1 |
HIP 54351 |
11.67 |
| 2026-10-09 00:00 |
11:07:13.85 |
+10:56:23.2 |
HIP 54351 |
1.69 |
| 2026-10-09 12:00 |
11:08:02.10 |
+10:55:00.6 |
HIP 54351 |
12.41 |
| 2026-10-10 00:00 |
11:08:50.33 |
+10:53:38.5 |
HIP 54351 |
24.28 |
| 2026-10-10 12:00 |
11:09:38.54 |
+10:52:16.8 |
HIP 54596 |
21.08 |
| 2026-10-11 00:00 |
11:10:26.73 |
+10:50:55.7 |
HIP 54596 |
19.09 |