메타데이터

항목	값
Designation	512P/PANSTARRS
Type	P
Perihelion (tp_cal, UTC)	2013-03-23T20:53:02.955840Z
Orbit solution date (soln_date, UTC)	2026-09-15T13:42:29Z
Obs used	103
NEO	-
M1	7.400
K1	14.750
PC	0.030
Discovery observation (MPC, UTC)	2012-10-10T08:37:45.206400Z
Discovery magnitude (MPC)	21.10 T
Discovery observatory (MPC)	F51 · Pan-STARRS 1, Haleakala

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2018-12-20.0000000
e	0.15516656
q (au)	4.838023
a (au)	5.726600
i (deg)	12.552517
Ω (om, deg)	73.783539
ω (w, deg)	307.794262
M (ma, deg)	150.828733

밝기

산란 + 전체 선형

$$ M_a = (11.865 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	11.865
n	6.000
gf	0.996
gb	-0.832
k	0.800
δ90	9.998

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)
2026-09-20 00:00	01:34:58.66	-04:24:59.0	HIP 7347	11.08
2026-09-20 12:00	01:34:46.60	-04:26:22.7	HIP 7347	8.85
2026-09-21 00:00	01:34:34.41	-04:27:46.4	HIP 7347	7.46
2026-09-21 12:00	01:34:22.09	-04:29:09.9	HIP 7347	7.47
2026-09-22 00:00	01:34:09.64	-04:30:33.3	HIP 7347	8.90
2026-09-22 12:00	01:33:57.07	-04:31:56.5	HIP 7347	11.24
2026-09-23 00:00	01:33:44.37	-04:33:19.6	HIP 7347	14.06
2026-09-23 12:00	01:33:31.56	-04:34:42.5	HIP 7347	17.15
2026-09-24 00:00	01:33:18.62	-04:36:05.2	HIP 7347	20.39
2026-09-24 12:00	01:33:05.57	-04:37:27.7	HIP 7347	23.74
2026-09-25 00:00	01:32:52.40	-04:38:49.9	HIP 7124	24.73
2026-09-25 12:00	01:32:39.12	-04:40:11.9	HIP 7124	21.60
2026-09-26 00:00	01:32:25.73	-04:41:33.6	HIP 7124	18.61
2026-09-26 12:00	01:32:12.23	-04:42:55.0	HIP 7124	15.88
2026-09-27 00:00	01:31:58.63	-04:44:16.2	HIP 7124	13.57
2026-09-27 12:00	01:31:44.93	-04:45:36.9	HIP 7124	11.95
2026-09-28 00:00	01:31:31.12	-04:46:57.4	HIP 7124	11.35
2026-09-28 12:00	01:31:17.22	-04:48:17.5	HIP 7059	10.26
2026-09-29 00:00	01:31:03.22	-04:49:37.2	HIP 7059	8.01
2026-09-29 12:00	01:30:49.13	-04:50:56.5	HIP 7059	7.15
2026-09-30 00:00	01:30:34.94	-04:52:15.4	HIP 7059	8.16
2026-09-30 12:00	01:30:20.67	-04:53:33.8	HIP 7059	10.53
2026-10-01 00:00	01:30:06.31	-04:54:51.8	HIP 7059	13.58
2026-10-01 12:00	01:29:51.87	-04:56:09.3	HIP 7059	16.97
2026-10-02 00:00	01:29:37.35	-04:57:26.3	HIP 7059	20.52
2026-10-02 12:00	01:29:22.75	-04:58:42.8	HIP 7059	24.19
2026-10-03 00:00	01:29:08.07	-04:59:58.8	HIP 7059	27.92
2026-10-03 12:00	01:28:53.32	-05:01:14.2	HIP 7059	31.70
2026-10-04 00:00	01:28:38.50	-05:02:29.1	HIP 7059	35.52
2026-10-04 12:00	01:28:23.61	-05:03:43.4	HIP 6826	36.65
2026-10-05 00:00	01:28:08.66	-05:04:57.0	HIP 6712	36.66
2026-10-05 12:00	01:27:53.64	-05:06:10.1	HIP 6712	34.86
2026-10-06 00:00	01:27:38.57	-05:07:22.4	HIP 6712	33.41
2026-10-06 12:00	01:27:23.44	-05:08:34.1	HIP 6654	31.45
2026-10-07 00:00	01:27:08.26	-05:09:45.2	HIP 6654	28.09
2026-10-07 12:00	01:26:53.03	-05:10:55.5	HIP 6654	24.89
2026-10-08 00:00	01:26:37.75	-05:12:05.0	HIP 6654	21.92
2026-10-08 12:00	01:26:22.42	-05:13:13.9	HIP 6654	19.31
2026-10-09 00:00	01:26:07.06	-05:14:21.9	HIP 6654	17.22
2026-10-09 12:00	01:25:51.66	-05:15:29.2	HIP 6654	15.85
2026-10-10 00:00	01:25:36.22	-05:16:35.7	HIP 6654	15.42
2026-10-10 12:00	01:25:20.75	-05:17:41.3	HIP 6654	15.99
2026-10-11 00:00	01:25:05.25	-05:18:46.1	HIP 6654	17.47