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00048+3810
BU 862

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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

00048+3810 BU 862

00^h 04^m 46.86^s +38° 10' 25.2" P.A. 30.20 sep 0.9 mag 10.02,10.18 Sp G5 dist. 92.51 pc (301.77 l.y.)

Coord 2000	00048+3810		Discov num	BU 862		Comp			Coord arcsec 2000	00 04 46.86 +38 10 25.2
Date first	1881		Date last	2019		Obs	77
Pa first	105		Pa last	30		P.A. Now (θ)	30.2°
Sep first	0.5		Sep last	0.8		Sep. Now (ρ)	0.88"
Mag pri	10.02		Mag sec	10.18		delta mag (ΔM)	0.16		Spectral class	G5 (yellow)
Pri motion ra	+029		Sec motion ra	+029
Pri motion dec	-060		Sec motion dec	-060
Notes	O (Orbital solution)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	30		Precise sep	0.81		Constellation	Andromeda		SAO	53619
HIP	385		Tycho2	2781-00488-1		Gaia DR2	2880739195125631488		ADS	34
BD	BD+37 4930		Distance	92.51		Distance ly	301.77		last precise pa	30
last precise sep	0.81

ORBITAL ELEMENTS

Period (P)	403y		Periastron (T)	1942y		Semi-major axis (a)	0.74a
Eccentricity (e)	0.68		Inclination (i)	40°		Longitude of periastron (ω)	198.8°
Node (Ω)	43°		Note			Grade	4	(1=Definitive, 9=Indet.)
Equinox			Last observation	1984

label	rho	theta
2000	0.712	21.0
2001	0.721	21.5
2002	0.730	22.1
2003	0.739	22.6
2004	0.747	23.1
2005	0.756	23.6
2006	0.764	24.0
2007	0.772	24.5
2008	0.780	25.0
2009	0.788	25.4
2010	0.796	25.8
2011	0.804	26.3
2012	0.812	26.7
2013	0.820	27.1
2014	0.827	27.5
2015	0.835	27.9
2016	0.842	28.3
2017	0.849	28.7
2018	0.857	29.1
2019	0.864	29.4
2020	0.871	29.8
2021	0.878	30.2
2022	0.885	30.5
2023	0.891	30.9
2024	0.898	31.2
2025	0.905	31.5
2026	0.911	31.9
2027	0.918	32.2
2028	0.924	32.5
2029	0.930	32.8
2030	0.936	33.2

grafico orbita

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

wds00048%2B3810a.png orbit plot

Measures: green=micrometric, blue=interferometric, purple=photographic

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
00048+3810	BU 862		2007	68	25	0.8	10.02	10.18	G5	NOD	000446.86+381025.2
00048+3810	BU 862		2009	70	24	0.8	10.02	10.18	G5	NOD	000446.86+381025.2
00048+3810	BU 862		2016	71	28	0.9	10.02	10.18	G5	O	000446.86+381025.2

If you need more information about this double, apply for a data request form to the WDS.