메타데이터

항목	값
Designation	202P/Scotti
Type	P
Perihelion (tp_cal, UTC)	2009-02-07T04:49:05.456640Z
Orbit solution date (soln_date, UTC)	2025-03-06T13:42:30Z
Obs used	449
NEO	-
M1	13.900
K1	10.000
PC	-

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2007-11-13.0000000
e	0.33043947
q (au)	2.526852
a (au)	3.773896
i (deg)	2.185340
Ω (om, deg)	194.588240
ω (w, deg)	255.594450
M (ma, deg)	299.207436

밝기

산란 + 전체 선형

$$ M_a = (16.098 + 2.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	16.098
n	2.000
gf	0.999
gb	-0.975
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	13:11:20.06	-06:09:40.1	HIP 64147	38.77
2026-05-12 12:00	13:11:07.97	-06:08:24.0	HIP 64147	35.54
2026-05-13 00:00	13:10:56.06	-06:07:09.1	HIP 64147	32.37
2026-05-13 12:00	13:10:44.32	-06:05:55.3	HIP 64147	29.25
2026-05-14 00:00	13:10:32.78	-06:04:42.8	HIP 64147	26.20
2026-05-14 12:00	13:10:21.41	-06:03:31.4	HIP 64147	23.21
2026-05-15 00:00	13:10:10.23	-06:02:21.3	HIP 64147	20.29
2026-05-15 12:00	13:09:59.24	-06:01:12.4	HIP 64147	17.45
2026-05-16 00:00	13:09:48.44	-06:00:04.7	HIP 64147	14.70
2026-05-16 12:00	13:09:37.83	-05:58:58.3	HIP 64147	12.09
2026-05-17 00:00	13:09:27.41	-05:57:53.1	HIP 64147	9.65
2026-05-17 12:00	13:09:17.18	-05:56:49.2	HIP 64147	7.52
2026-05-18 00:00	13:09:07.16	-05:55:46.6	HIP 64147	5.95
2026-05-18 12:00	13:08:57.32	-05:54:45.2	HIP 64147	5.37
2026-05-19 00:00	13:08:47.69	-05:53:45.1	HIP 64147	6.00
2026-05-19 12:00	13:08:38.26	-05:52:46.3	HIP 64147	7.49
2026-05-20 00:00	13:08:29.02	-05:51:48.9	HIP 64147	9.40
2026-05-20 12:00	13:08:19.99	-05:50:52.7	HIP 64147	11.48
2026-05-21 00:00	13:08:11.16	-05:49:57.8	HIP 64147	13.62
2026-05-21 12:00	13:08:02.54	-05:49:04.3	HIP 64147	15.78
2026-05-22 00:00	13:07:54.12	-05:48:12.1	HIP 64147	17.93
2026-05-22 12:00	13:07:45.90	-05:47:21.2	HIP 64023	19.56
2026-05-23 00:00	13:07:37.89	-05:46:31.7	HIP 64023	19.54
2026-05-23 12:00	13:07:30.09	-05:45:43.4	HIP 64023	19.76
2026-05-24 00:00	13:07:22.49	-05:44:56.6	HIP 64023	20.17
2026-05-24 12:00	13:07:15.10	-05:44:11.0	HIP 64023	20.76
2026-05-25 00:00	13:07:07.92	-05:43:26.8	HIP 64023	21.49
2026-05-25 12:00	13:07:00.95	-05:42:44.0	HIP 64023	22.34
2026-05-26 00:00	13:06:54.19	-05:42:02.5	HIP 64023	23.27
2026-05-26 12:00	13:06:47.64	-05:41:22.4	HIP 64023	24.27
2026-05-27 00:00	13:06:41.30	-05:40:43.6	HIP 64023	25.32
2026-05-27 12:00	13:06:35.16	-05:40:06.1	HIP 64023	26.39
2026-05-28 00:00	13:06:29.24	-05:39:30.0	HIP 64023	27.49
2026-05-28 12:00	13:06:23.53	-05:38:55.3	HIP 64023	28.58
2026-05-29 00:00	13:06:18.04	-05:38:22.0	HIP 64023	29.67
2026-05-29 12:00	13:06:12.75	-05:37:50.0	HIP 63929	29.80
2026-05-30 00:00	13:06:07.67	-05:37:19.3	HIP 63929	29.22
2026-05-30 12:00	13:06:02.81	-05:36:50.0	HIP 63929	28.72
2026-05-31 00:00	13:05:58.16	-05:36:22.1	HIP 63929	28.29
2026-05-31 12:00	13:05:53.72	-05:35:55.5	HIP 63929	27.93
2026-06-01 00:00	13:05:49.50	-05:35:30.3	HIP 63929	27.63
2026-06-01 12:00	13:05:45.48	-05:35:06.5	HIP 63929	27.38
2026-06-02 00:00	13:05:41.68	-05:34:44.0	HIP 63929	27.19