18521+2431 COU 510 (HD 174932)

18^h 52^m 07.71^s +24° 30' 58.6" P.A. 181.00 sep 0.2 mag 8.90,8.90 Sp B9

Coord 2000	18521+2431	Discov num	COU 510	Comp		Coord arcsec 2000	18 52 07.71 +24 30 58.6
Date first	1970	Date last	2016	Obs	17
Pa first	153	Pa last	181.4	P.A. Now (θ)	181.4°
Sep first	0.2	Sep last	0.185	Sep. Now (ρ)	0.185"
Mag pri	8.90	Mag sec	8.90	delta mag (ΔM)	0	Spectral class	B9 (blue-white)
Pri motion ra	+006	Sec motion ra
Pri motion dec	-011	Sec motion dec
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 174932		Constellation	Hercules		SAO	86519		Tycho2	2113-02133-1
Gaia DR2	4534216868679403264		HD	174932

WDS 18521+2431 COU 510 (HD 174932) : NOTES

discov_num	notes	refcode
COU 510	Previously classified as an Algol-type system, JZ Her, Petr Zasche
	(personal corres.) reports that Couteau must have confused it with	Cou1972a
	the nearby HS Her. This pair is non-variable and is often used as a
	check star in variability analyses.

REFERENCES

refcode	metd	author	reference
Cou1972a	Ma j	Couteau, P.	1972A&AS....5..167C
Cou1972a	+Pa	A&AS 5, 167, 1972

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18521+2431	COU 510		1996	12	166	0.2	8.90	8.90	B9	N	185207.71+243058.6
18521+2431	COU 510		2007	13	175	0.2	8.90	8.90	B9	N	185207.71+243058.6
18521+2431	COU 510		2016	15	181	0.2	8.90	8.90	B9	N	185207.71+243058.6

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

WDS 18521+2431 COU 510 (HD 174932) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18521+2431 COU 510 (HD 174932) : MEASURES

No records found.

WDS 18521+2431 (HD 174932) : VIRTUAL EYEPIECE

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WDS 18521+2431 (HD 174932) : ALADIN DSS IMAGE @ 18^h 52^m 07.71^s +24° 30' 58.6"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18521+2431 COU 510 (HD 174932) : NEIGHBORHOODS

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Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		18521+2431	COU 510		181	0.2
Show		18523+2435	POU3574		352	11.2	5
Show		18518+2428	POU3571		193	8.2	6
Show		18527+2437	POU3575		296	4.5	11
Show		18528+2437	TDT1104		339	0.7	11
Show		18522+2445	POU3573		174	11.9	15
Show		18531+2426	POU3577		10	9.9	15
Show		18513+2450	POU3569		255	16.4	23
Show		18534+2417	RAO 513		-1	0.2	23
Show		18528+2453	POU3576		215	4.6	25
Show		18509+2412	POU3568		98	3.4	25
Show		18537+2445	POU3579		234	4.1	26
Show		18538+2446	POU3580		262	7.4	27
Show		18505+2415	POU3565		85	8.9	28
Show		18533+2407	POU3578		231	9.0	28
Show		18523+2402	TDT1095		204	0.4	30
Show		18502+2414	POU3563		170	8.9	32
Show		18537+2407	TDT1119		192	0.6	32
Show		18503+2453	POU3564		47	11.7	34
Show		18545+2418	POU3585		141	3.9	36
Show		18549+2433	POU3588		115	8.3	39
Show		18548+2418	POU3587		47	7.9	39
Show		18550+2430	POU3589		151	4.1	40
Show		18546+2409	POU3584		287	7.9	40
Show		18518+2511	POU3570		131	10.9	41
Show		18551+2430	POU3590		152	7.8	42
Show		18547+2409	POU3586		79	9.9	42
Show		18499+2403	POU3562		177	15.5	43
Show		18492+2447	POU3556		285	8.2	43
Show		18493+2411	POU3558		107	7.5	43
Show		18508+2510	POU3567		273	6.9	44
Show		18554+2436	POU3595	AB	38	17.3	46
Show		18554+2436	POU3594	AC	16	20.6	46
Show		18553+2443	POU3593		195	10.3	46
Show		18553+2418	POU3592		226	8.6	46
Show		18549+2459	TDT1123		201	0.5	48
Show		18491+2405	POU3555		256	8.7	50
Show		18492+2503	CHR 79	AB	124	0.2	51
Show		18490+2405	POU3554		274	9.8	52
Show		18509+2522	TDT1083		189	0.6	54
Show		18533+2523	STT 364		163	0.7	55
Show		18560+2422	POU3599		214	13.4	55
Show		18531+2526	KPP1560		356	11.8	56
Show		18479+2422	POU3553		359	5.3	58
Show		18490+2353	TDS 946		67	1.9	58
Show		18559+2405	POU3596		255	8.3	58
Show		18497+2337	POU3561		357	16.8	64
Show		18542+2335	POU3581		308	9.5	64
Show		18566+2417	POU3601		57	7.4	64
Show		18476+2412	POU3551		157	7.0	65
Show		18568+2421	POU3604		61	11.3	65

WDS 18521+2431 : COMPONENTS

	A
B	pa=181.3° sep=0.19"

18521+2431 A

Componente originario normalizzato	AB	Name	HD 174932	Coord arcsec 2000	185207.71+243058.6	Mag	8.9
Spectral class	B9 (blue-white)	PmRA	6.00	PmDE	-11.0	SAO	86519
Tycho2	2113-02133-1	HD	174932	DM	BD+24 3555

Tycho2

Tycho2	2113-02133-1	Pflag		RAmdeg	283.03214751	DEmdeg	24.51629762
PmRA	1.4	PmDE	-4.5	E RAmdeg	6	E DEmdeg	5
E pmRA	1.1	E pmDE	1.0	EpRAm	1990.97	EpDEm	1991.29
Num	12	Q RAmdeg	0.5	Q DEmdeg	0.8	Q pmRA	0.5
Q pmDE	0.9	BTmag	8.689	E BTmag	0.015	VTmag	8.653
E VTmag	0.012	Prox	999	TYC	T	HIP
CCDM		RAdeg	283.03214417	DEdeg	24.51630833	EpRA 1990	1.48
EpDE 1990	1.70	E RAdeg	5.6	E DEdeg	4.9	Posflg
Corr	0.1

SAO

SAO	86519	DelFlag		RA1950		PmRA1950	-0.0002
DE1950		PmDE1950	-0.014	Vmag	8.7	SpType	B9
Double code		Source	35	CatNum	6711	DM	BD+24 3555
DMcomp		BDsup		HD	174932	M HD	0
GC		RA1950rad	4.93081611	DE1950rad	0.42681551	PmRA2000	-0.0001
PmDE2000	-0.015

CCDM

Ccdm	18521+2431	RComp		Comp	A	Note1
Note2		Discov num		DRAs	1.72	DDEs	-2.0
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	8.9	Sp	B9	PmNote	*
PmRA	3	PmDE	-15	Dm number	+24 3555	Cat1	BD
Name2	+24 1950	Cat2	AGK2/3	HD	174932	M HD
ADS BDS		M ADS BDS		N IDS		IDS	18480N2424A
HIC

18521+2431 B

Componente originario normalizzato

Coord arcsec 2000

185207.71+243058.4

Mag

8.9

Calc coord

yes

CCDM

Ccdm	18521+2431	RComp		Comp	B	Note1
Note2		Discov num	COU 510	DRAs		DDEs
R dRAs		Year	1970	Theta	152	Rho	0.2
Obs	1	Vmag	8.9	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS		M ADS BDS		N IDS		IDS	18480N2424B
HIC