20273-1813 BU   60AB (Pi Cap)

Coord 2000	20273-1813		Discov num	BU   60		Comp	AB		Coord arcsec 2000	20 27 19.20 -18 12 42.1
Date first	1846		Date last	2016		Obs	68
Pa first	145		Pa last	149		P.A. Now (θ)	149°
Sep first	2.9		Sep last	3.6		Sep. Now (ρ)	3.6"
Mag pri	5.13		Mag sec	8.53		delta mag (ΔM)	3.4		Spectral class	B8II-III (blue-white)
Pri motion ra	+011		Sec motion ra	+010
Pri motion dec	-012		Sec motion dec	-011
Notes	N (See Notes)

Visually invisible, K-band or other infrared star rPM=0.087 (< 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		163592	20273-1813	CHR 184	Aa,Ab	1992	2009	2	50	0.1	5.30	7.90	2.60
Show	Pi Cap	163592	20273-1813	BU 60	AB	1846	2016	68	149	3.6	5.13	8.53	3.40		<===
Show		163592	20273-1813	BU 296	AC	1898	1999	4	40	37.9	5.13	14.10	8.97

Quadruple system
3 visible stars in this system

Precise pa	149.3		Precise sep	3.63		Name	Pi Cap		Constellation	Capricornus
SAO	163592		HIP	100881		Tycho2	6333-02129-2		Gaia DR2	73140593152
HD	194636		HR	7814		GC	28442		BD	BD-18 5685
Bayer	Pi Capricorni		Bayer name	Pi Cap		Flamsteed	10 Capricorni		Flamsteed name	10 Cap
Distance	167.22		Distance ly	545.47

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20273-1813	BU 60	AB	2002	66	146	3.2	5.13	8.53	B8II-III	D	202719.20-181242.1
20273-1813	BU 60	AB	2010	67	150	3.3	5.13	8.53	B8II-III	N D	202719.20-181242.1
20273-1813	BU 60	AB	2016	68	149	3.6	5.13	8.53	B8II-III	N	202719.20-181242.1

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