메타데이터

항목	값
Designation	255P/Levy
Type	P
Perihelion (tp_cal, UTC)	2006-10-07T09:13:57.613440Z
Orbit solution date (soln_date, UTC)	2021-10-18T22:42:54Z
Obs used	503
NEO	Yes
M1	11.500
K1	38.000
PC	0.030

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2007-12-22.0000000
e	0.67200978
q (au)	0.992018
a (au)	3.024534
i (deg)	18.333043
Ω (om, deg)	279.780048
ω (w, deg)	179.592955
M (ma, deg)	82.561191

밝기

산란 + 전체 선형

$$ M_a = (20.000 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	20.000
n	6.000
gf	1.000
gb	-0.500
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)
2026-03-26 00:00	20:46:40.42	-12:42:23.0	HIP 102493	8.62
2026-03-26 12:00	20:47:00.71	-12:40:15.8	HIP 102493	13.74
2026-03-27 00:00	20:47:20.89	-12:38:08.6	HIP 102569	14.98
2026-03-27 12:00	20:47:40.96	-12:36:01.4	HIP 102664	12.11
2026-03-28 00:00	20:48:00.92	-12:33:54.2	HIP 102664	7.50
2026-03-28 12:00	20:48:20.77	-12:31:47.1	HIP 102664	4.72
2026-03-29 00:00	20:48:40.52	-12:29:40.0	HIP 102664	6.63
2026-03-29 12:00	20:49:00.15	-12:27:32.9	HIP 102738	9.14
2026-03-30 00:00	20:49:19.66	-12:25:25.8	HIP 102738	11.83
2026-03-30 12:00	20:49:39.07	-12:23:18.8	HIP 102738	15.82
2026-03-31 00:00	20:49:58.36	-12:21:11.8	HIP 102891	15.62
2026-03-31 12:00	20:50:17.54	-12:19:04.9	HIP 102891	14.83
2026-04-01 00:00	20:50:36.60	-12:16:58.0	HIP 102891	15.77
2026-04-01 12:00	20:50:55.55	-12:14:51.2	HIP 102891	18.15
2026-04-02 00:00	20:51:14.37	-12:12:44.4	HIP 102891	21.48
2026-04-02 12:00	20:51:33.08	-12:10:37.7	HIP 102891	25.38
2026-04-03 00:00	20:51:51.67	-12:08:31.1	HIP 102891	29.60
2026-04-03 12:00	20:52:10.15	-12:06:24.5	HIP 103151	28.48
2026-04-04 00:00	20:52:28.50	-12:04:18.0	HIP 103151	25.44
2026-04-04 12:00	20:52:46.72	-12:02:11.6	HIP 103151	23.09
2026-04-05 00:00	20:53:04.83	-12:00:05.3	HIP 103151	21.65
2026-04-05 12:00	20:53:22.81	-11:57:59.2	HIP 103125	19.16
2026-04-06 00:00	20:53:40.67	-11:55:53.1	HIP 103125	16.60
2026-04-06 12:00	20:53:58.40	-11:53:47.1	HIP 103125	15.20
2026-04-07 00:00	20:54:16.01	-11:51:41.2	HIP 103125	15.24
2026-04-07 12:00	20:54:33.48	-11:49:35.4	HIP 103125	16.69
2026-04-08 00:00	20:54:50.83	-11:47:29.8	HIP 103125	19.22
2026-04-08 12:00	20:55:08.05	-11:45:24.3	HIP 103125	22.44
2026-04-09 00:00	20:55:25.14	-11:43:19.0	HIP 103280	24.46
2026-04-09 12:00	20:55:42.09	-11:41:13.7	HIP 103280	22.78
2026-04-10 00:00	20:55:58.92	-11:39:08.7	HIP 103280	21.97
2026-04-10 12:00	20:56:15.60	-11:37:03.8	HIP 103280	22.10
2026-04-11 00:00	20:56:32.16	-11:34:59.0	HIP 103280	23.14
2026-04-11 12:00	20:56:48.57	-11:32:54.5	HIP 103280	24.95
2026-04-12 00:00	20:57:04.85	-11:30:50.0	HIP 103280	27.37
2026-04-12 12:00	20:57:20.99	-11:28:45.8	HIP 103280	30.23
2026-04-13 00:00	20:57:36.99	-11:26:41.8	HIP 103487	31.20
2026-04-13 12:00	20:57:52.85	-11:24:38.0	HIP 103487	32.74
2026-04-14 00:00	20:58:08.57	-11:22:34.3	HIP 103487	34.76
2026-04-14 12:00	20:58:24.14	-11:20:30.9	HIP 103671	34.83
2026-04-15 00:00	20:58:39.57	-11:18:27.7	HIP 103671	30.56
2026-04-15 12:00	20:58:54.85	-11:16:24.7	HIP 103671	26.33
2026-04-16 00:00	20:59:09.99	-11:14:22.0	HIP 103671	22.14