메타데이터

항목	값
Designation	296P/Garradd
Type	P
Perihelion (tp_cal, UTC)	2014-03-01T06:43:40.719360Z
Orbit solution date (soln_date, UTC)	2021-07-01T22:13:08Z
Obs used	333
NEO	-
M1	12.800
K1	15.250
PC	0.030

Osculating 궤도요소

항목	값
Epoch (epoch_cal, TDB)	2014-07-21.0000000
e	0.47734904
q (au)	1.830682
a (au)	3.502686
i (deg)	25.203980
Ω (om, deg)	263.676488
ω (w, deg)	350.027681
M (ma, deg)	21.307492

밝기

산란 + 전체 선형

$$ M_a = (12.031 + 6.000\cdot 2.5\log_{10} r) + \epsilon - 2.5\log_{10}\Phi(\theta) + 5\log_{10}\Delta $$ $$ \theta = 180^\circ - \alpha $$ $$ \Phi(\theta) = \frac{\delta_{90} D(\theta) + 1}{\delta_{90} + 1},\quad D(\theta) = k\cdot \Phi_{HG}(\theta; g_f) + (1-k)\cdot \Phi_{HG}(\theta; g_b) $$ $$ \Phi_{HG}(\theta; g) = \left(\frac{1+g^2}{1+g^2-2g\cos\theta}\right)^{3/2},\quad \Phi_{HG}(90^\circ)=1 $$

모델 상수

항목	값
H0	12.031
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)
2026-03-26 00:00	07:53:43.53	-05:25:26.7	HIP 38474	13.85
2026-03-26 12:00	07:53:41.53	-05:23:14.8	HIP 38474	13.58
2026-03-27 00:00	07:53:39.87	-05:21:03.4	HIP 38474	13.75
2026-03-27 12:00	07:53:38.54	-05:18:52.3	HIP 38474	14.34
2026-03-28 00:00	07:53:37.57	-05:16:41.7	HIP 38474	15.30
2026-03-28 12:00	07:53:36.93	-05:14:31.4	HIP 38474	16.55
2026-03-29 00:00	07:53:36.63	-05:12:21.7	HIP 38474	18.03
2026-03-29 12:00	07:53:36.66	-05:10:12.4	HIP 38474	19.68
2026-03-30 00:00	07:53:37.04	-05:08:03.7	HIP 38474	21.46
2026-03-30 12:00	07:53:37.75	-05:05:55.4	HIP 38474	23.34
2026-03-31 00:00	07:53:38.80	-05:03:47.8	HIP 38474	25.30
2026-03-31 12:00	07:53:40.19	-05:01:40.6	HIP 38462	24.02
2026-04-01 00:00	07:53:41.91	-04:59:34.1	HIP 38462	22.65
2026-04-01 12:00	07:53:43.96	-04:57:28.2	HIP 38462	21.48
2026-04-02 00:00	07:53:46.34	-04:55:22.9	HIP 38462	20.53
2026-04-02 12:00	07:53:49.06	-04:53:18.2	HIP 38462	19.86
2026-04-03 00:00	07:53:52.11	-04:51:14.3	HIP 38462	19.48
2026-04-03 12:00	07:53:55.48	-04:49:11.0	HIP 38614	18.95
2026-04-04 00:00	07:53:59.19	-04:47:08.4	HIP 38614	16.71
2026-04-04 12:00	07:54:03.22	-04:45:06.5	HIP 38614	14.44
2026-04-05 00:00	07:54:07.59	-04:43:05.3	HIP 38614	12.17
2026-04-05 12:00	07:54:12.27	-04:41:05.0	HIP 38614	9.89
2026-04-06 00:00	07:54:17.29	-04:39:05.4	HIP 38614	7.62
2026-04-06 12:00	07:54:22.62	-04:37:06.6	HIP 38614	5.44
2026-04-07 00:00	07:54:28.28	-04:35:08.6	HIP 38614	3.55
2026-04-07 12:00	07:54:34.27	-04:33:11.4	HIP 38614	2.80
2026-04-08 00:00	07:54:40.57	-04:31:15.1	HIP 38614	3.96
2026-04-08 12:00	07:54:47.19	-04:29:19.6	HIP 38614	6.07
2026-04-09 00:00	07:54:54.14	-04:27:25.0	HIP 38680	7.97
2026-04-09 12:00	07:55:01.40	-04:25:31.3	HIP 38680	9.05
2026-04-10 00:00	07:55:08.98	-04:23:38.6	HIP 38680	10.65
2026-04-10 12:00	07:55:16.87	-04:21:46.7	HIP 38680	12.61
2026-04-11 00:00	07:55:25.08	-04:19:55.8	HIP 38680	14.82
2026-04-11 12:00	07:55:33.61	-04:18:05.9	HIP 38680	17.19
2026-04-12 00:00	07:55:42.44	-04:16:16.9	HIP 38680	19.70
2026-04-12 12:00	07:55:51.59	-04:14:29.0	HIP 38680	22.31
2026-04-13 00:00	07:56:01.05	-04:12:42.0	HIP 38680	25.01
2026-04-13 12:00	07:56:10.82	-04:10:56.1	HIP 38680	27.79
2026-04-14 00:00	07:56:20.89	-04:09:11.3	HIP 38680	30.64
2026-04-14 12:00	07:56:31.28	-04:07:27.4	HIP 38680	33.56
2026-04-15 00:00	07:56:41.97	-04:05:44.7	HIP 38680	36.55
2026-04-15 12:00	07:56:52.96	-04:04:03.1	HIP 38973	35.42
2026-04-16 00:00	07:57:04.26	-04:02:22.5	HIP 38973	32.28