18278+2442 STF 2320 (HD 170314)

18^h 27^m 45.89^s +24° 41' 50.8" P.A. 1.00 sep 0.9 mag 7.14,8.90 Sp B9V dist. 256.41 pc (836.41 l.y.)

Coord 2000	18278+2442	Discov num	STF2320	Comp		Coord arcsec 2000	18 27 45.89 +24 41 50.8
Date first	1831	Date last	2015	Obs	60
Pa first	11	Pa last	0.8	P.A. Now (θ)	0.8°
Sep first	1.8	Sep last	0.87	Sep. Now (ρ)	0.87"
Mag pri	7.14	Mag sec	8.90	delta mag (ΔM)	1.76	Spectral class	B9V (blue-white)
Pri motion ra	+003	Sec motion ra	+003
Pri motion dec	+012	Sec motion dec	+012
Notes	N (See Notes)

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 170314	Constellation	Hercules	SAO	86083	HIP	90483
Tycho2	2110-01170-1	Gaia DR2	4536580548100596224	HD	170314	GC	25206
BD	BD+24 3425	Distance	256.41	Distance ly	836.41

WDS 18278+2442 STF 2320 (HD 170314) : NOTES

discov_num	notes	refcode
STF2320	Eclipsing and spectroscopic multiple (periods 1.42001 & 2.08327 days).	Zas2010
	An updated orbit predicts that the two close pairs may be resolvable
	by interferometry, with predicted separations ~17mas and a magnitude
	difference of ~1.4mag.	Zas2016b

REFERENCES

refcode	metd	author	reference
Zas2010	-	Zasche, P.	...................
Zas2010		private communication, 2010
Zas2016b	not -	Zasche, P. & Uhlar, R.	2016A&A...588A.121Z
Zas2016b		A&A 588, A121, 2016

DISCOVERER

idgroup	discov	author
1	STF	Struve, F.G.W.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18278+2442	STF2320		2005	59	359	1.1	7.14	8.90	B9V	D	182745.89+244150.8
18278+2442	STF2320		2010	61	358	1.1	7.14	8.90	B9V	N D	182745.89+244150.8
18278+2442	STF2320		2011	63	358	1.1	7.14	8.90	B9V	N	182745.89+244150.8
18278+2442	STF2320		2013	58	358	1.0	7.14	8.90	B9V	N	182745.89+244150.8
18278+2442	STF2320		2015	59	1	0.9	7.14	8.90	B9V	N	182745.89+244150.8

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

WDS 18278+2442 STF 2320 (HD 170314) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18278+2442 STF 2320 (HD 170314) : MEASURES

No records found.

WDS 18278+2442 (HD 170314) : VIRTUAL EYEPIECE

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

WDS 18278+2442 (HD 170314) : ALADIN DSS IMAGE @ 18^h 27^m 45.89^s +24° 41' 50.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18278+2442 STF 2320 (HD 170314) : NEIGHBORHOODS

Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show	name	coord_2000	discov#	comp	pa	sep	dist(')
Show		18278+2442	STF2320		1	0.9
Show		18276+2423	AG 223		51	2.6	20
Show		18275+2417	TDT 886		24	0.5	26
Show		18266+2422	HO 634		269	3.3	26
Show		18276+2509	KU 117		16	19.5	27
Show		18278+2415	POU3411	AB	34	9.9	28
Show		18278+2415	POU3412	AC	245	13.3	28
Show		18257+2503	POU3409		248	12.2	34
Show		18290+2511	TDT 902		30	0.9	34
Show		18281+2359	SLE 180		247	6.4	43
Show		18278+2357	POU3410		259	8.2	46
Show		18310+2424	TDT 923		329	0.8	48
Show		18305+2519	A 246		164	1.5	53
Show		18239+2435	POU3406		178	4.2	53
Show		18240+2427	POU3407		141	10.4	53
Show		18302+2400	SLE 181		271	15.3	54
Show		18317+2447	POU3416		185	15.8	54
Show		18277+2536	HDS2612	AB	110	4.5	54
Show		18277+2536	DAM1238	AC	277	15.2	54
Show		18306+2400	POU3413		242	9.3	58
Show		18312+2516	A 248		31	0.6	58
Show		18266+2537	LDS4787		129	84.6	58
Show		18235+2429	POU3403		324	13.1	59
Show		18234+2440	POU3402		59	6.8	60
Show		18233+2439	POU3401		124	12.3	61
Show		18320+2504	POU3419		240	11.5	63
Show		18315+2405	POU3414		260	17.8	63
Show		18324+2451	POU3423		112	7.4	65
Show		18231+2445	POU3398	AB	156	12.3	65
Show		18231+2445	POU3398	AC	134	11.6	65
Show		18231+2426	POU3400		89	8.6	65
Show		18319+2516	GCB 33		50	5.3	66
Show		18243+2351	POU3408		229	14.5	69
Show		18269+2551	BRT 182		347	4.4	70
Show		18329+2455	POU3426		95	13.0	72
Show		18330+2420	POU3427		81	6.8	75
Show		18278+2557	DAM 285		67	5.8	76
Show		18319+2351	POU3417		125	9.3	76
Show		18236+2350	POU3404	AB	267	9.5	77
Show		18236+2350	POU3405	AC	276	25.8	77
Show		18295+2329	TDT 908		8	1.8	77
Show		18322+2350	POU3420		355	2.8	80
Show		18323+2350	POU3421		165	4.2	81
Show		18270+2603	L 24		273	3.4	82
Show		18231+2349	POU3399		256	12.8	83
Show		18321+2342	POU3418		129	7.0	85
Show		18255+2600	STF2318		248	21.0	85
Show		18216+2426	POU3393		44	5.0	85
Show		18327+2350	POU3425		214	13.1	86
Show		18296+2603	HDS2619	AB	110	0.6	86
Show		18218+2407	RAO 389		221	0.3	89

WDS 18278+2442 : COMPONENTS

	A
B	pa=0.7° sep=0.87"

18278+2442 A

Componente originario normalizzato	AB	Name	HD 170314	Coord arcsec 2000	182745.89+244150.8	Mag	7.14
Spectral class	B9V (blue-white)	PmRA	3.00	PmDE	12.0	SAO	86083
HIP	90483	Tycho2	2110-01170-1	HD	170314	GC	25206
BD	BD+24 3425

Tycho2

Tycho2	2110-01170-1	Pflag	P	RAmdeg	276.94121315	DEmdeg	24.69743323
PmRA	3.3	PmDE	12.0	E RAmdeg	4	E DEmdeg	4
E pmRA	1.5	E pmDE	1.5	EpRAm	1991.43	EpDEm	1991.58
Num	6	Q RAmdeg	2.5	Q DEmdeg	1.2	Q pmRA	2.4
Q pmDE	1.3	BTmag	7.142	E BTmag	0.015	VTmag	7.137
E VTmag	0.010	Prox	12	TYC	T	HIP	90483
CCDM	A	RAdeg	276.94120472	DEdeg	24.69737972	EpRA 1990	1.52
EpDE 1990	1.68	E RAdeg	3.9	E DEdeg	3.7	Posflg	D
Corr	0.1

SAO

SAO	86083	DelFlag		RA1950		PmRA1950	0.0001
DE1950		PmDE1950	0.017	Vmag	7	SpType	B9
Double code		Source	70	CatNum	25206	DM	BD+24 3425
DMcomp		BDsup		HD	170314	M HD	0
GC	25206	RA1950rad	4.82456803	DE1950rad	0.43048494	PmRA2000	0.0002
PmDE2000	0.016

Hipparcos

Catalog	H	HIP	90483	Proxy	H	RAhms	18 27 45.89
DEdms	+24 41 50.6	Vmag	6.94	VarFlag	2	R Vmag	H
RAdeg	276.941	DEdeg	24.6974	AstroRef	A	Plx	4.14
CCDM	18278+2442	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	1	Rho	1.197	HD	170314	BD	BD+24 3425
CD		CP		Dm number	+24 3425	VIred	0.02
SpType	B9	R SpType		Coord arcsec 2000	182745.89+244150.6

Hipparcos 2

HIP	90483	Sn	15	So	3	Nc	2
RArad	4.8335358693	DErad	0.4310505595	Plx	3.9	PmRA	6.26
PmDE	12	E RArad	0.36	E DErad	0.47	E Plx	0.74
E pmRA	0.42	E pmDE	0.6	Hpmag	6.9474	E Hpmag	0.0038
SHp	0.053	VA	1	BV	0	E BV	0.495
VI	0.02

CCDM

Ccdm	18278+2442	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.13	DDEs	-10.0
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	7.0	Sp	B9	PmNote	*
PmRA	1	PmDE	3	Dm number	+24 3425	Cat1	BD
Name2	+24 1888	Cat2	AGK2/3	HD	170314	M HD
ADS BDS	A11373	M ADS BDS		N IDS		IDS	18236N2438A
HIC	90483

18278+2442 B

Componente originario normalizzato	AB		Coord arcsec 2000	182745.89+244151.7		Mag	8.9		PmRA	3.00
PmDE	12.0		Tycho2	2110-01170-2		Calc delta mag	1.76		Calc coord	yes

Tycho2

Tycho2	2110-01170-2	Pflag	P	RAmdeg	276.94121315	DEmdeg	24.69743323
PmRA	3.3	PmDE	12.0	E RAmdeg	4	E DEmdeg	4
E pmRA	1.5	E pmDE	1.5	EpRAm	1991.43	EpDEm	1991.58
Num	6	Q RAmdeg	2.5	Q DEmdeg	1.2	Q pmRA	2.4
Q pmDE	1.3	BTmag	9.172	E BTmag	0.018	VTmag	8.897
E VTmag	0.015	Prox	12	TYC		HIP	90483
CCDM	B	RAdeg	276.94120556	DEdeg	24.69771028	EpRA 1990	1.51
EpDE 1990	1.69	E RAdeg	8.7	E DEdeg	7.4	Posflg	D
Corr	0.1

CCDM

Ccdm	18278+2442	RComp		Comp	B	Note1
Note2		Discov num	STF2320	DRAs		DDEs
R dRAs		Year	1956	Theta	003	Rho	1.3
Obs	23	Vmag	8.9	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A11373	M ADS BDS		N IDS		IDS	18236N2438B
HIC	90483