17569+1811 J 1352

Coord 2000	17569+1811		Discov num	J  1352		Comp			Coord arcsec 2000	17 56 51.89 +18 10 20.7
Date first	1922		Date last	2016		Obs	10
Pa first	22		Pa last	23		P.A. Now (θ)	23°
Sep first	4.1		Sep last	3.888		Sep. Now (ρ)	3.888"
Mag pri	12.25		Mag sec	12.70		delta mag (ΔM)	0.45		Spectral class
Pri motion ra	-047		Sec motion ra	+002
Pri motion dec	-074		Sec motion dec	+035
Notes	N (See Notes)

rPM=1.363 This double is not physical.

Constellation

Hercules

Gaia DR2

4503399722414075648

discov_num	notes	refcode
J 1352	Jonckheere notes ADS positions are 1970 and 1920. In his 1952 paper
	he uses 1950 ADS position and has a note "two couples?". There is
	indeed a measure that indeed looks different:
	1951.62, 39.9@, 3.33", 11.3-11.3.	J__1952
	Observations incompatible. Is there confusion between different pairs,
	as thought by Jonckheere (JO 35, p 53)?	Cou1952b

refcode	metd	author	reference
Cou1952b	Ma -	Couteau, P.	1952JO.....35..181C
Cou1952b		J. Obs. 35, 181, 1952
J__1952	M+ j	Jonckheere, R.	1952JO.....35...37J
J__1952	+Pa	J. Obs. 35, 37, 1952

idgroup	discov	author
1	J	Jonckheere, R.

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
17569+1811	J 1352		2002	8	21	3.9	10.00	11.00		N D	175651.89+181020.7
17569+1811	J 1352		2015	9	23	3.9	12.25	12.70		N	175651.89+181020.7
17569+1811	J 1352		2016	10	23	3.9	12.25	12.70		N	175651.89+181020.7

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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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