20227+1320 STF2673AB

Coord 2000	20227+1320		Discov num	STF2673		Comp	AB		Coord arcsec 2000	20 22 43.76 +13 20 25.4
Date first	1828		Date last	2016		Obs	45
Pa first	336		Pa last	326		P.A. Now (θ)	326°
Sep first	2.0		Sep last	2.4		Sep. Now (ρ)	2.4"
Mag pri	8.29		Mag sec	9.75		delta mag (ΔM)	1.46		Spectral class	F2 (yellow-white)
Pri motion ra	-006		Sec motion ra	-006
Pri motion dec	-028		Sec motion dec	-032
Notes	T (Parallax indicates physical)

Visually invisible, K-band or other infrared star rPM=0.123 (< 0.3, Physical double) This double is physical.

Show	name	SAO	coord_2000	discov#	comp	first	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		106038	20227+1320	STF2673	AB	1828	2016	45	326	2.4	8.29	9.75	1.46		<===
Show		106038	20227+1320	STF2673	AC	1829	2016	32	100	76.5	8.29	8.60	0.31
Show		106040	20227+1320	STF2674	CD	1828	2016	32	1	15.0	8.60	11.43	2.83

Quadruple system
4 visible stars in this system

Precise pa	326.2		Precise sep	2.422		Constellation	Delphinus		SAO	106038
Tycho2	1086-01256-1		Gaia DR2	41211977216		HD	193967

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20227+1320	STF2673	AB	1999	40	327	2.4	8.29	9.75	F2		202243.76+132025.4
20227+1320	STF2673	AB	2009	41	327	2.4	8.29	9.75	F2		202243.76+132025.4
20227+1320	STF2673	AB	2011	42	326	2.3	8.29	9.75	F2		202243.76+132025.4
20227+1320	STF2673	AB	2016	43	326	2.4	8.29	9.75	F2		202243.76+132025.4

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