메타데이터

항목	값
Designation	232P/Hill
Type	P
Perihelion (tp_cal, UTC)	2009-10-01T10:51:18.581760Z
Orbit solution date (soln_date, UTC)	2021-04-15T23:28:01Z
Obs used	297
NEO	-
M1	7.200
K1	19.750
PC	0.030

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2010-10-02.0000000
e	0.33492236
q (au)	2.982861
a (au)	4.484981
i (deg)	14.635076
Ω (om, deg)	56.129136
ω (w, deg)	53.417372
M (ma, deg)	37.932128

밝기

산란 + 전체 선형

$$ M_a = (9.156 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	9.156
n	6.000
gf	1.000
gb	-0.998
k	1.000
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)
2026-05-12 00:00	23:58:46.69	-14:02:45.8	HIP 118205	5.60
2026-05-12 12:00	23:59:07.83	-14:01:15.7	HIP 118205	10.23
2026-05-13 00:00	23:59:28.88	-13:59:46.5	HIP 118205	15.31
2026-05-13 12:00	23:59:49.86	-13:58:18.2	HIP 118205	20.48
2026-05-14 00:00	00:00:10.75	-13:56:50.8	HIP 118205	25.68
2026-05-14 12:00	00:00:31.55	-13:55:24.3	HIP 118205	30.88
2026-05-15 00:00	00:00:52.27	-13:53:58.6	HIP 26	31.36
2026-05-15 12:00	00:01:12.90	-13:52:34.0	HIP 26	31.67
2026-05-16 00:00	00:01:33.45	-13:51:10.2	HIP 179	28.70
2026-05-16 12:00	00:01:53.91	-13:49:47.3	HIP 179	25.93
2026-05-17 00:00	00:02:14.28	-13:48:25.4	HIP 179	23.98
2026-05-17 12:00	00:02:34.56	-13:47:04.4	HIP 179	23.04
2026-05-18 00:00	00:02:54.75	-13:45:44.4	HIP 179	23.23
2026-05-18 12:00	00:03:14.85	-13:44:25.2	HIP 179	24.49
2026-05-19 00:00	00:03:34.86	-13:43:07.1	HIP 179	26.66
2026-05-19 12:00	00:03:54.78	-13:41:49.9	HIP 287	28.71
2026-05-20 00:00	00:04:14.60	-13:40:33.6	HIP 287	28.80
2026-05-20 12:00	00:04:34.33	-13:39:18.3	HIP 287	29.74
2026-05-21 00:00	00:04:53.96	-13:38:04.0	HIP 554	28.14
2026-05-21 12:00	00:05:13.50	-13:36:50.6	HIP 554	23.95
2026-05-22 00:00	00:05:32.94	-13:35:38.2	HIP 554	20.10
2026-05-22 12:00	00:05:52.28	-13:34:26.8	HIP 554	16.80
2026-05-23 00:00	00:06:11.53	-13:33:16.4	HIP 554	14.39
2026-05-23 12:00	00:06:30.67	-13:32:06.9	HIP 554	13.36
2026-05-24 00:00	00:06:49.72	-13:30:58.4	HIP 554	13.97
2026-05-24 12:00	00:07:08.67	-13:29:51.0	HIP 554	16.02
2026-05-25 00:00	00:07:27.52	-13:28:44.5	HIP 554	19.03
2026-05-25 12:00	00:07:46.27	-13:27:39.0	HIP 554	22.59
2026-05-26 00:00	00:08:04.91	-13:26:34.5	HIP 554	26.48
2026-05-26 12:00	00:08:23.45	-13:25:31.0	HIP 554	30.55
2026-05-27 00:00	00:08:41.89	-13:24:28.5	HIP 554	34.74
2026-05-27 12:00	00:09:00.23	-13:23:27.1	HIP 554	38.99
2026-05-28 00:00	00:09:18.46	-13:22:26.7	HIP 887	39.24
2026-05-28 12:00	00:09:36.58	-13:21:27.2	HIP 887	37.67
2026-05-29 00:00	00:09:54.60	-13:20:28.8	HIP 887	36.60
2026-05-29 12:00	00:10:12.51	-13:19:31.5	HIP 887	36.05
2026-05-30 00:00	00:10:30.32	-13:18:35.2	HIP 1012	35.63
2026-05-30 12:00	00:10:48.01	-13:17:39.9	HIP 1012	32.52
2026-05-31 00:00	00:11:05.60	-13:16:45.6	HIP 1012	29.75
2026-05-31 12:00	00:11:23.08	-13:15:52.4	HIP 1012	27.40
2026-06-01 00:00	00:11:40.44	-13:15:00.3	HIP 1012	25.58
2026-06-01 12:00	00:11:57.69	-13:14:09.2	HIP 1012	24.38
2026-06-02 00:00	00:12:14.83	-13:13:19.2	HIP 1012	23.89