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332P/Ikeya-Murakami

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

332P/Ikeya-Murakami · Magnitude (Full range)

산란 + 전체 선형

$$ M_a = (19.314 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목 값
H0 19.314
n 6.000
gf 0.835
gb -0.999
k 0.921
δ90 4.888
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)
2026-02-03 00:00 01:03:54.51 +11:50:33.1 HIP 4884 27.67
2026-02-03 12:00 01:04:21.15 +11:53:16.5 HIP 4884 34.02
2026-02-04 00:00 01:04:47.97 +11:56:00.9 HIP 5117 34.03
2026-02-04 12:00 01:05:14.99 +11:58:46.5 HIP 5258 29.45
2026-02-05 00:00 01:05:42.20 +12:01:33.2 HIP 5258 22.41
2026-02-05 12:00 01:06:09.59 +12:04:21.0 HIP 5258 15.48
2026-02-06 00:00 01:06:37.17 +12:07:09.9 HIP 5258 9.04
2026-02-06 12:00 01:07:04.94 +12:09:59.8 HIP 5258 5.53
2026-02-07 00:00 01:07:32.90 +12:12:50.8 HIP 5258 9.40
2026-02-07 12:00 01:08:01.04 +12:15:42.9 HIP 5258 16.04
2026-02-08 00:00 01:08:29.37 +12:18:36.0 HIP 5417 20.19
2026-02-08 12:00 01:08:57.88 +12:21:30.2 HIP 5417 20.19
2026-02-09 00:00 01:09:26.58 +12:24:25.4 HIP 5407 17.56
2026-02-09 12:00 01:09:55.45 +12:27:21.7 HIP 5407 17.86
2026-02-10 00:00 01:10:24.51 +12:30:19.0 HIP 5407 21.15
2026-02-10 12:00 01:10:53.75 +12:33:17.2 HIP 5407 26.37
2026-02-11 00:00 01:11:23.16 +12:36:16.5 HIP 5631 23.70
2026-02-11 12:00 01:11:52.76 +12:39:16.8 HIP 5631 23.28
2026-02-12 00:00 01:12:22.53 +12:42:18.1 HIP 5638 20.08
2026-02-12 12:00 01:12:52.49 +12:45:20.3 HIP 5638 18.11
2026-02-13 00:00 01:13:22.61 +12:48:23.6 HIP 5638 19.45
2026-02-13 12:00 01:13:52.92 +12:51:27.7 HIP 5854 21.45
2026-02-14 00:00 01:14:23.40 +12:54:32.9 HIP 5854 13.74
2026-02-14 12:00 01:14:54.05 +12:57:39.0 HIP 5854 6.80
2026-02-15 00:00 01:15:24.88 +13:00:46.0 HIP 5854 5.90
2026-02-15 12:00 01:15:55.87 +13:03:53.9 HIP 5854 12.51
2026-02-16 00:00 01:16:27.04 +13:07:02.8 HIP 5854 20.34
2026-02-16 12:00 01:16:58.38 +13:10:12.6 HIP 6050 25.62
2026-02-17 00:00 01:17:29.89 +13:13:23.3 HIP 6050 20.30
2026-02-17 12:00 01:18:01.57 +13:16:34.8 HIP 6050 17.48
2026-02-18 00:00 01:18:33.42 +13:19:47.3 HIP 6050 18.41
2026-02-18 12:00 01:19:05.43 +13:23:00.6 HIP 6050 22.67
2026-02-19 00:00 01:19:37.61 +13:26:14.8 HIP 6050 28.85
2026-02-19 12:00 01:20:09.96 +13:29:29.9 HIP 6324 27.17
2026-02-20 00:00 01:20:42.47 +13:32:45.7 HIP 6324 20.70
2026-02-20 12:00 01:21:15.14 +13:36:02.5 HIP 6324 16.26
2026-02-21 00:00 01:21:47.97 +13:39:20.0 HIP 6324 15.74
2026-02-21 12:00 01:22:20.97 +13:42:38.3 HIP 6324 19.52
2026-02-22 00:00 01:22:54.13 +13:45:57.5 HIP 6324 25.81
2026-02-22 12:00 01:23:27.45 +13:49:17.5 HIP 6489 26.96
2026-02-23 00:00 01:24:00.93 +13:52:38.2 HIP 6489 25.34
2026-02-23 12:00 01:24:34.56 +13:55:59.7 HIP 6705 25.07
2026-02-24 00:00 01:25:08.35 +13:59:22.0 HIP 6705 18.96