메타데이터
| 항목 |
값 |
| Designation |
147P/Kushida-Muramatsu |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2008-09-23T19:01:26.480640Z |
| Orbit solution date (soln_date, UTC) |
2024-11-06T10:50:35Z |
| Obs used |
57 |
| NEO |
- |
| M1 |
13.600 |
| K1 |
11.500 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2005-10-30.0000000 |
| e |
0.27555443 |
| q (au) |
2.754546 |
| a (au) |
3.802282 |
| i (deg) |
2.368741 |
| Ω (om, deg) |
93.773792 |
| ω (w, deg) |
347.033193 |
| M (ma, deg) |
219.117040 |
밝기
산란 + 전체 선형
$$
M_a = (13.842 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
13.842 |
| n |
6.000 |
| gf |
1.000 |
| gb |
-1.000 |
| k |
0.999 |
| 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) |
| 2026-07-29 00:00 |
13:34:02.42 |
-07:49:49.7 |
HIP 66131 |
15.60 |
| 2026-07-29 12:00 |
13:34:17.31 |
-07:51:32.1 |
HIP 66131 |
19.28 |
| 2026-07-30 00:00 |
13:34:32.34 |
-07:53:15.2 |
HIP 66131 |
23.12 |
| 2026-07-30 12:00 |
13:34:47.52 |
-07:54:59.0 |
HIP 66252 |
25.55 |
| 2026-07-31 00:00 |
13:35:02.84 |
-07:56:43.5 |
HIP 66252 |
24.27 |
| 2026-07-31 12:00 |
13:35:18.30 |
-07:58:28.7 |
HIP 66252 |
23.67 |
| 2026-08-01 00:00 |
13:35:33.90 |
-08:00:14.6 |
HIP 66252 |
23.81 |
| 2026-08-01 12:00 |
13:35:49.64 |
-08:02:01.2 |
HIP 66252 |
24.71 |
| 2026-08-02 00:00 |
13:36:05.52 |
-08:03:48.4 |
HIP 66465 |
25.00 |
| 2026-08-02 12:00 |
13:36:21.54 |
-08:05:36.3 |
HIP 66465 |
22.57 |
| 2026-08-03 00:00 |
13:36:37.70 |
-08:07:24.9 |
HIP 66465 |
20.75 |
| 2026-08-03 12:00 |
13:36:53.99 |
-08:09:14.2 |
HIP 66465 |
19.76 |
| 2026-08-04 00:00 |
13:37:10.42 |
-08:11:04.1 |
HIP 66465 |
19.73 |
| 2026-08-04 12:00 |
13:37:26.98 |
-08:12:54.6 |
HIP 66465 |
20.70 |
| 2026-08-05 00:00 |
13:37:43.68 |
-08:14:45.8 |
HIP 66560 |
17.52 |
| 2026-08-05 12:00 |
13:38:00.51 |
-08:16:37.6 |
HIP 66560 |
13.10 |
| 2026-08-06 00:00 |
13:38:17.47 |
-08:18:30.1 |
HIP 66560 |
8.82 |
| 2026-08-06 12:00 |
13:38:34.57 |
-08:20:23.2 |
HIP 66560 |
5.09 |
| 2026-08-07 00:00 |
13:38:51.80 |
-08:22:16.9 |
HIP 66560 |
4.12 |
| 2026-08-07 12:00 |
13:39:09.16 |
-08:24:11.2 |
HIP 66560 |
7.21 |
| 2026-08-08 00:00 |
13:39:26.65 |
-08:26:06.1 |
HIP 66560 |
11.48 |
| 2026-08-08 12:00 |
13:39:44.27 |
-08:28:01.6 |
HIP 66560 |
16.05 |
| 2026-08-09 00:00 |
13:40:02.02 |
-08:29:57.8 |
HIP 66757 |
17.17 |
| 2026-08-09 12:00 |
13:40:19.90 |
-08:31:54.5 |
HIP 66757 |
12.50 |
| 2026-08-10 00:00 |
13:40:37.90 |
-08:33:51.8 |
HIP 66757 |
8.01 |
| 2026-08-10 12:00 |
13:40:56.03 |
-08:35:49.6 |
HIP 66757 |
4.36 |
| 2026-08-11 00:00 |
13:41:14.29 |
-08:37:48.1 |
HIP 66757 |
4.69 |
| 2026-08-11 12:00 |
13:41:32.67 |
-08:39:47.1 |
HIP 66803 |
2.61 |
| 2026-08-12 00:00 |
13:41:51.18 |
-08:41:46.6 |
HIP 66803 |
3.57 |
| 2026-08-12 12:00 |
13:42:09.81 |
-08:43:46.7 |
HIP 66803 |
8.30 |
| 2026-08-13 00:00 |
13:42:28.56 |
-08:45:47.4 |
HIP 66803 |
13.28 |
| 2026-08-13 12:00 |
13:42:47.44 |
-08:47:48.6 |
HIP 66803 |
18.33 |
| 2026-08-14 00:00 |
13:43:06.43 |
-08:49:50.3 |
HIP 66803 |
23.42 |
| 2026-08-14 12:00 |
13:43:25.55 |
-08:51:52.5 |
HIP 67031 |
25.43 |
| 2026-08-15 00:00 |
13:43:44.78 |
-08:53:55.2 |
HIP 67031 |
25.59 |
| 2026-08-15 12:00 |
13:44:04.14 |
-08:55:58.5 |
HIP 67031 |
26.77 |
| 2026-08-16 00:00 |
13:44:23.61 |
-08:58:02.2 |
HIP 67031 |
28.86 |
| 2026-08-16 12:00 |
13:44:43.19 |
-09:00:06.5 |
HIP 67031 |
31.71 |
| 2026-08-17 00:00 |
13:45:02.90 |
-09:02:11.2 |
HIP 66987 |
33.05 |
| 2026-08-17 12:00 |
13:45:22.71 |
-09:04:16.4 |
HIP 67145 |
31.63 |
| 2026-08-18 00:00 |
13:45:42.65 |
-09:06:22.1 |
HIP 67145 |
29.35 |
| 2026-08-18 12:00 |
13:46:02.69 |
-09:08:28.3 |
HIP 67145 |
27.92 |
| 2026-08-19 00:00 |
13:46:22.85 |
-09:10:34.9 |
HIP 67145 |
27.49 |