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20165+2747
HDS2889
MW Vul

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

20165+2747 HDS2889 (MW Vul)

20^h 16^m 27.20^s +27° 46' 33.8" P.A. 116.00 sep 0.2 mag 6.74,9.26 Sp A0p dist. 495.05 pc (1614.85 l.y.)

Coord 2000	20165+2747		Discov num	HDS2889		Comp			Coord arcsec 2000	20 16 27.20 +27 46 33.8
Date first	1991		Date last	2018		Obs	6
Pa first	137		Pa last	116		P.A. Now (θ)	116°
Sep first	0.2		Sep last	0.2		Sep. Now (ρ)	0.2"
Mag pri	6.74		Mag sec	9.26		delta mag (ΔM)	2.52		Spectral class	A0p (white)
Pri motion ra	+009		Sec motion ra
Pri motion dec	+002		Sec motion dec
Notes

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Precise pa	115.9		Precise sep	0.222		Var name	MW Vul		Constellation	Vulpecula
SAO	88444		HIP	99927		Tycho2	2163-01795-1		Gaia DR2	1836944524518980992
HD	192913		BD	BD+27 3668		Distance	495.05		Distance ly	1614.85

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
20165+2747	HDS2889		1997	2	125	0.2	6.74	9.26	A0p		201627.20+274633.8
20165+2747	HDS2889		2010	4	121	0.2	6.74	9.26	A0p		201627.20+274633.8
20165+2747	HDS2889		2018	5	116	0.2	6.74	9.26	A0p		201627.20+274633.8

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