메타데이터
| 항목 |
값 |
| Designation |
332P/Ikeya-Murakami |
| Type |
P |
| Perihelion (tp_cal, UTC) |
2010-10-13T08:06:24.744960Z |
| Orbit solution date (soln_date, UTC) |
2017-01-17T16:14:01Z |
| Obs used |
385 |
| NEO |
- |
| M1 |
5.200 |
| K1 |
22.000 |
| PC |
0.030 |
Osculating 궤도요소
| 항목 |
값 |
| Epoch (epoch_cal, TDB) |
2010-11-20.0000000 |
| e |
0.48859089 |
| q (au) |
1.578843 |
| a (au) |
3.087241 |
| i (deg) |
9.377956 |
| Ω (om, deg) |
3.818489 |
| ω (w, deg) |
152.429576 |
| M (ma, deg) |
6.843119 |
밝기
산란 + 전체 선형
$$
M_a = (19.157 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta
$$
$$
\theta = 180^\circ - \alpha
$$
$$
\Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b)
$$
$$
\Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1
$$
모델 상수
| 항목 |
값 |
| H0 |
19.157 |
| n |
6.000 |
| gf |
0.876 |
| gb |
-0.998 |
| k |
0.935 |
| δ90 |
6.855 |
| 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 |
03:56:57.28 |
+26:05:02.8 |
HIP 18630 |
32.11 |
| 2026-06-01 12:00 |
03:57:56.72 |
+26:08:17.0 |
HIP 18630 |
18.42 |
| 2026-06-02 00:00 |
03:58:56.29 |
+26:11:30.4 |
HIP 18630 |
4.93 |
| 2026-06-02 12:00 |
03:59:55.99 |
+26:14:42.9 |
HIP 18630 |
9.36 |
| 2026-06-03 00:00 |
04:00:55.82 |
+26:17:54.5 |
HIP 18630 |
23.04 |
| 2026-06-03 12:00 |
04:01:55.78 |
+26:21:05.2 |
HIP 18815 |
25.67 |
| 2026-06-04 00:00 |
04:02:55.87 |
+26:24:15.1 |
HIP 18868 |
29.13 |
| 2026-06-04 12:00 |
04:03:56.10 |
+26:27:24.0 |
HIP 19136 |
32.32 |
| 2026-06-05 00:00 |
04:04:56.46 |
+26:30:31.9 |
HIP 19136 |
23.46 |
| 2026-06-05 12:00 |
04:05:56.95 |
+26:33:39.0 |
HIP 19136 |
21.01 |
| 2026-06-06 00:00 |
04:06:57.57 |
+26:36:45.1 |
HIP 19296 |
16.62 |
| 2026-06-06 12:00 |
04:07:58.33 |
+26:39:50.2 |
HIP 19296 |
4.96 |
| 2026-06-07 00:00 |
04:08:59.22 |
+26:42:54.4 |
HIP 19332 |
9.54 |
| 2026-06-07 12:00 |
04:10:00.24 |
+26:45:57.6 |
HIP 19332 |
19.82 |
| 2026-06-08 00:00 |
04:11:01.39 |
+26:48:59.9 |
HIP 19513 |
20.30 |
| 2026-06-08 12:00 |
04:12:02.68 |
+26:52:01.1 |
HIP 19592 |
16.80 |
| 2026-06-09 00:00 |
04:13:04.10 |
+26:55:01.4 |
HIP 19592 |
20.43 |
| 2026-06-09 12:00 |
04:14:05.65 |
+26:58:00.6 |
HIP 19592 |
30.76 |
| 2026-06-10 00:00 |
04:15:07.34 |
+27:00:58.8 |
HIP 19803 |
33.04 |
| 2026-06-10 12:00 |
04:16:09.16 |
+27:03:56.0 |
HIP 19803 |
40.12 |
| 2026-06-11 00:00 |
04:17:11.11 |
+27:06:52.2 |
HIP 20250 |
44.58 |
| 2026-06-11 12:00 |
04:18:13.19 |
+27:09:47.2 |
HIP 20250 |
30.61 |
| 2026-06-12 00:00 |
04:19:15.41 |
+27:12:41.3 |
HIP 20250 |
16.85 |
| 2026-06-12 12:00 |
04:20:17.76 |
+27:15:34.3 |
HIP 20250 |
5.54 |
| 2026-06-13 00:00 |
04:21:20.24 |
+27:18:26.1 |
HIP 20324 |
2.81 |
| 2026-06-13 12:00 |
04:22:22.85 |
+27:21:16.9 |
HIP 20324 |
15.01 |
| 2026-06-14 00:00 |
04:23:25.60 |
+27:24:06.6 |
HIP 20528 |
26.08 |
| 2026-06-14 12:00 |
04:24:28.48 |
+27:26:55.2 |
HIP 20528 |
23.62 |
| 2026-06-15 00:00 |
04:25:31.48 |
+27:29:42.7 |
HIP 20528 |
29.00 |
| 2026-06-15 12:00 |
04:26:34.62 |
+27:32:29.0 |
HIP 20864 |
27.00 |
| 2026-06-16 00:00 |
04:27:37.89 |
+27:35:14.2 |
HIP 20864 |
14.60 |
| 2026-06-16 12:00 |
04:28:41.29 |
+27:37:58.3 |
HIP 20864 |
10.27 |
| 2026-06-17 00:00 |
04:29:44.83 |
+27:40:41.2 |
HIP 20933 |
17.34 |
| 2026-06-17 12:00 |
04:30:48.49 |
+27:43:22.9 |
HIP 21010 |
25.32 |
| 2026-06-18 00:00 |
04:31:52.28 |
+27:46:03.4 |
HIP 21010 |
29.88 |
| 2026-06-18 12:00 |
04:32:56.20 |
+27:48:42.7 |
HIP 21333 |
28.82 |
| 2026-06-19 00:00 |
04:34:00.25 |
+27:51:20.9 |
HIP 21353 |
17.25 |
| 2026-06-19 12:00 |
04:35:04.43 |
+27:53:57.8 |
HIP 21353 |
10.18 |
| 2026-06-20 00:00 |
04:36:08.74 |
+27:56:33.5 |
HIP 21510 |
13.37 |
| 2026-06-20 12:00 |
04:37:13.18 |
+27:59:08.0 |
HIP 21510 |
3.70 |
| 2026-06-21 00:00 |
04:38:17.74 |
+28:01:41.2 |
HIP 21510 |
16.36 |
| 2026-06-21 12:00 |
04:39:22.44 |
+28:04:13.1 |
HIP 21699 |
3.64 |
| 2026-06-22 00:00 |
04:40:27.27 |
+28:06:43.9 |
HIP 21699 |
13.29 |