21023+3931 WRD 4 AF

Coord 2000	21023+3931		Discov num	WRD   4		Comp	AF		Coord arcsec 2000	21 02 20.95 +39 30 32.5
Date first	1875		Date last	2015		Obs	5
Pa first	230		Pa last	222.5		P.A. Now (θ)	222.5°
Sep first	95.0		Sep last	101.832		Sep. Now (ρ)	101.832"
Mag pri	6.62		Mag sec	12.45		delta mag (ΔM)	5.83		Spectral class	K3II-III (yellow-orange)
Pri motion ra	+002		Sec motion ra	-012
Pri motion dec	+001		Sec motion dec	-013
Notes	N (See Notes)

rPM=1.119 This double is not physical.

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 200465	70818	21 02 21 +39 30 32	H 4 113 AB	2018	37	299	18.9	6.62	9.49	2.87
Show		70818	21 02 21 +39 30 32	H 4 113 AC	2012	10	248	26.7	6.62	12.50	5.88
Show		70818	21 02 21 +39 30 32	SMY 6 AD	2015	8	141	57.0	6.62	12.61	5.99
Show		70818	21 02 21 +39 30 32	SMY 6 AE	2018	10	87	95.7	6.62	10.88	4.26
Show		70818	21 02 21 +39 30 32	WRD 4 AF	2015	5	223	101.8	6.62	12.45	5.83		<===
Show		70818	21 02 21 +39 30 32	WRD 4 AG	1875	1	230	95.0	6.62	13.50	6.88
Show		70818	21 02 21 +39 30 32	FYM 114 AI	2012	3	277	41.1	6.62	15.20	8.58
Show			21 02 29 +39 30 38	WRD 4 ED	2015	7	230	77.7	10.88	12.61	1.73
Show			21 02 29 +39 30 38	WRD 4 EH	2015	9	159	37.4	10.88	12.84	1.96

Ninefold system
9 estimated visually detectable stars in this system

Constellation	Cygnus		SAO	70818		HIP	103822		Tycho2	3172-01764-1
Gaia DR2	1872982701745880320		HD	200465		BD	BD+38 4321		Distance	223.71
Distance ly	729.74

discov_num	notes	refcode
H 4 113	H IV 113. B is BD+38@4320. Also known as STF2748.
SMY 6	AD: Based on his magnitude estimates, the 1875 Ward measure attributed	Wrd1876
	to EH was more likely AD.
WRD 4	AG: Ward's 1875 EG measure doesn't correspond to any likely companion,
	but given his magnitudes, the measure was probably between A and a
	companion now labelled as G. The old EG pair has been removed. The
	WRD 4ED should more appropriately have been designated SMY 6ED, but
	will not be changed, in order to minimize confusion.

refcode	metd	author	reference
Wrd1876	Ma -	Ward, I.W.	1876AReg...14..165W
Wrd1876		Astr. Reg. 14, 165, 1876

idgroup	discov	author
1	FYM	Fay, M.
28	SMY	Smyth, W.H.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
21023+3931	WRD 4	AF	2012	4	222	102.2	6.62	11.88		N D	210220.96+393032.5
21023+3931	WRD 4	AF	2015	5	223	101.8	6.62	12.45	K3II-III	N	210220.95+393032.5

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Radius: auto 0.5" 0.8" 1" 2" 3" 5" 10" 15" 20" 25" 30" 35" 40" 45" 50" 55" 1' 2' 3' 4' 5' 6' 7' 8' 9' 10' 15' 20' 30' 40' 50' 1° 2° 4° 5° 8° Components only

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