메타데이터

항목	값
Designation	216P/LINEAR
Type	P
Perihelion (tp_cal, UTC)	2016-05-30T22:32:33.506880Z
Orbit solution date (soln_date, UTC)	2024-07-07T00:42:15Z
Obs used	403
NEO	-
M1	10.700
K1	21.750
PC	0.030

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2017-04-30.0000000
e	0.44545351
q (au)	2.148896
a (au)	3.875051
i (deg)	9.046729
Ω (om, deg)	359.865529
ω (w, deg)	151.513702
M (ma, deg)	43.163177

밝기

산란 + 전체 선형

$$ M_a = (12.693 + 5.566\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	12.693
n	5.566
gf	1.000
gb	-0.943
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)
2026-09-20 00:00	20:14:47.06	-28:01:00.3	HIP 99844	29.10
2026-09-20 12:00	20:14:41.10	-28:00:21.7	HIP 99844	30.12
2026-09-21 00:00	20:14:35.35	-27:59:42.4	HIP 99844	31.17
2026-09-21 12:00	20:14:29.82	-27:59:02.3	HIP 99844	32.24
2026-09-22 00:00	20:14:24.51	-27:58:21.6	HIP 99844	33.32
2026-09-22 12:00	20:14:19.42	-27:57:40.1	HIP 99844	34.42
2026-09-23 00:00	20:14:14.54	-27:56:58.0	HIP 99844	35.52
2026-09-23 12:00	20:14:09.88	-27:56:15.1	HIP 99844	36.62
2026-09-24 00:00	20:14:05.44	-27:55:31.5	HIP 99844	37.71
2026-09-24 12:00	20:14:01.22	-27:54:47.3	HIP 99932	38.58
2026-09-25 00:00	20:13:57.21	-27:54:02.4	HIP 99932	39.02
2026-09-25 12:00	20:13:53.42	-27:53:16.8	HIP 99932	39.43
2026-09-26 00:00	20:13:49.85	-27:52:30.5	HIP 99932	39.83
2026-09-26 12:00	20:13:46.49	-27:51:43.6	HIP 99932	40.20
2026-09-27 00:00	20:13:43.35	-27:50:56.0	HIP 99932	40.55
2026-09-27 12:00	20:13:40.43	-27:50:07.8	HIP 99932	40.87
2026-09-28 00:00	20:13:37.72	-27:49:18.9	HIP 99499	40.33
2026-09-28 12:00	20:13:35.23	-27:48:29.4	HIP 99499	39.35
2026-09-29 00:00	20:13:32.96	-27:47:39.3	HIP 99499	38.40
2026-09-29 12:00	20:13:30.90	-27:46:48.5	HIP 99499	37.47
2026-09-30 00:00	20:13:29.06	-27:45:57.1	HIP 99499	36.57
2026-09-30 12:00	20:13:27.43	-27:45:05.1	HIP 99499	35.70
2026-10-01 00:00	20:13:26.01	-27:44:12.5	HIP 99499	34.86
2026-10-01 12:00	20:13:24.81	-27:43:19.2	HIP 99499	34.05
2026-10-02 00:00	20:13:23.83	-27:42:25.4	HIP 99499	33.28
2026-10-02 12:00	20:13:23.06	-27:41:31.0	HIP 99499	32.54
2026-10-03 00:00	20:13:22.50	-27:40:35.9	HIP 99499	31.84
2026-10-03 12:00	20:13:22.16	-27:39:40.3	HIP 99499	31.18
2026-10-04 00:00	20:13:22.03	-27:38:44.1	HIP 99499	30.57
2026-10-04 12:00	20:13:22.12	-27:37:47.3	HIP 99499	30.00
2026-10-05 00:00	20:13:22.41	-27:36:49.9	HIP 99499	29.49
2026-10-05 12:00	20:13:22.93	-27:35:52.0	HIP 99499	29.04
2026-10-06 00:00	20:13:23.65	-27:34:53.4	HIP 99499	28.64
2026-10-06 12:00	20:13:24.58	-27:33:54.3	HIP 99499	28.31
2026-10-07 00:00	20:13:25.73	-27:32:54.7	HIP 99499	28.05
2026-10-07 12:00	20:13:27.09	-27:31:54.5	HIP 99499	27.86
2026-10-08 00:00	20:13:28.66	-27:30:53.7	HIP 99499	27.76
2026-10-08 12:00	20:13:30.43	-27:29:52.4	HIP 99499	27.73
2026-10-09 00:00	20:13:32.42	-27:28:50.5	HIP 99499	27.78
2026-10-09 12:00	20:13:34.62	-27:27:48.1	HIP 99499	27.93
2026-10-10 00:00	20:13:37.03	-27:26:45.2	HIP 99499	28.16
2026-10-10 12:00	20:13:39.64	-27:25:41.7	HIP 99499	28.48
2026-10-11 00:00	20:13:42.46	-27:24:37.7	HIP 99499	28.90