19138+3909 STF 2487 AC

19^h 13^m 45.49^s +39° 08' 45.5" P.A. 151.00 sep 161.5 mag 4.38,11.42 Sp B2.5IV dist. 425.53 pc (1388.08 l.y.)

Coord 2000	19138+3909	Discov num	STF2487	Comp	AC	Coord arcsec 2000	19 13 45.49 +39 08 45.5
Date first	1880	Date last	2014	Obs	10
Pa first	151	Pa last	150.7	P.A. Now (θ)	150.7°
Sep first	161.3	Sep last	161.51	Sep. Now (ρ)	161.51"
Mag pri	4.38	Mag sec	11.42	delta mag (ΔM)	7.04	Spectral class	B2.5IV (blue-white)
Pri motion ra	-001	Sec motion ra	-008
Pri motion dec	-001	Sec motion dec	-009
Notes	N (See Notes)

rPM=0.883

This double is not physical.

19138+3909 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	Aladfar	68010	19 13 45 +39 08 46	STF 2487 AB	2017	74	81	28.4	4.38	8.58	4.20
Show		68010	19 13 45 +39 08 46	STF 2487 AC	2014	10	151	161.5	4.38	11.42	7.04		<===

Triple system
3 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Common name	Aladfar	Var name	NSV11839 Lyr	Constellation	Lyra	SAO	68010
HIP	94481	Tycho2	3121-02285-1	Gaia DR2	2099679223187100800	HD	180163
HR	7298	GC	26507	ADS	12197	BD	BD+38 3490
Bayer	Eta Lyrae	Bayer name	Eta Lyr	Flamsteed	20 Lyrae	Flamsteed name	20 Lyr
Distance	425.53	Distance ly	1388.08	Bayer greek	η Lyr

Meaning

claws (with? LYR)

WDS 19138+3909 STF 2487 AC : NOTES

discov_num	notes	refcode
STF2487	eta Lyr = 20 Lyr = Aladfar. B is BD+38@3491. A is a spectroscopic
	binary.
	AB: H 4 2.	MEv2010
	AB: SEI 581.	Nsn2017b

REFERENCES

refcode	metd	author	reference
MEv2010	-	MacEvoy, B.	...................
MEv2010		private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Nsn2017b	not -	Nanson, J.	...................
Nsn2017b		private communication, 2017

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
19138+3909	STF2487	AC	1998	5	151	161.9	4.38	11.42	B2.5IV	N D	191345.49+390845.5
19138+3909	STF2487	AC	2009	6	151	160.9	4.38	11.42	B2.5IV	N D	191345.49+390845.5
19138+3909	STF2487	AC	2010	7	150	161.2	4.38	11.42	B2.5IV	N D	191345.49+390845.5
19138+3909	STF2487	AC	2013	9	151	162.1	4.38	11.42	B2.5IV	N	191345.49+390845.5
19138+3909	STF2487	AC	2014	10	151	161.5	4.38	11.42	B2.5IV	N	191345.49+390845.5

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

WDS 19138+3909 STF 2487 AC : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19138+3909 STF 2487 AC : MEASURES

No records found.

WDS 19138+3909 : 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 19138+3909 : ALADIN DSS IMAGE @ 19^h 13^m 45.49^s +39° 08' 45.5"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 19138+3909 STF 2487 AC : 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	Aladfar	19138+3909	STF2487	AB	81	28.4	1
Show	Aladfar	19138+3909	STF2487	AC	151	161.5	1
Show		19132+3908	HLM 19		330	12.4	6
Show		19143+3911	SEI 584		118	24.9	8
Show		19135+3902	SHJ 289		56	39.2	8
Show		19147+3918	ES 1966		331	5.3	15
Show		19125+3900	KOI1216		77	3.1	17
Show		19127+3856	DEA 490		354	116.7	17
Show		19156+3909	KOI2519		345	2.9	22
Show		19137+3931	TOB 153		266	21.9	24
Show		19130+3933	SEI 578		164	21.6	26
Show		19116+3905	KOI1193		7	3.0	26
Show		19120+3925	YSC 114		314	0.6	27
Show		19160+3906	KOI3435	AB	160	3.1	27
Show		19160+3906	KOI3435	AC	301	3.5	27
Show		19133+3842	KOI1209		169	0.5	28
Show		19113+3913	KOI6109		324	0.5	29
Show		19165+3910	A 158		290	3.7	33
Show		19119+3844	KOI6103		242	0.6	33
Show		19166+3903	COU2200		122	0.6	34
Show		19111+3847	TAR 4	DE	204	5.6	35
Show		19151+3940	KOI2576		243	3.6	35
Show		19142+3834	KOI3415		89	0.7	36
Show		19157+3842	A 155		85	4.5	36
Show		19148+3942	KOI 628	AB	311	1.8	36
Show		19148+3942	KOI 628	AC	239	2.7	36
Show		19109+3923	DEA 184		242	8.9	36
Show		19160+3932	DEA 329		267	14.2	36
Show		19111+3847	SE 2	BC	21	0.1	38
Show		19111+3847	STF2481	AD	28	230.0	38
Show		19111+3847	STF2481	A,BC	18	4.7	38
Show		19111+3847	STF2481	Aa,Ab	30	0.0	38
Show		19169+3905	DEA 218		229	10.2	38
Show		19114+3843	DBR 9		166	9.4	38
Show		19108+3853	KOI 805		89	2.0	38
Show		19169+3923	KOI5052		285	0.8	40
Show		19102+3904	TDT1272		24	0.6	42
Show		19164+3941	KOI2691		218	2.1	45
Show		19163+3944	DEA 286		118	11.7	47
Show		19162+3949	DEA 99		338	6.5	50
Show		19125+3821	KOI4548		42	3.3	51
Show		19148+3820	SEI 585		120	14.6	51
Show		19098+3849	ES 2035		173	3.1	51
Show		19131+4000	KOI3533		10	3.0	52
Show		19182+3910	SEI 588		79	2.2	52
Show		19093+3912	FMR 144	AB	116	162.6	52
Show		19093+3912	JOD 17	Aa,Ab	163	0.3	52
Show		19158+3823	RAO 85	AB	332	3.6	52
Show		19105+3832	RAO 154		215	1.2	53
Show		19092+3917	KOI2210		92	3.3	54
Show		19164+3954	ALI1110		325	13.4	55

WDS 19138+3909 : COMPONENTS

	A	B
B	pa=78.3° sep=22.18"
C	pa=156.5° sep=153.62"	pa=164.8° sep=150.63"

19138+3909 A

Common name	Aladfar	Meaning	claws (with? LYR)	Coord arcsec 2000	191345.49+390845.5	Mag	4.38
Spectral class	B2.5IV (blue-white)	PmRA	-1.00	PmDE	-1.0	SAO	68010
HIP	94481	Tycho2	3121-02285-1	HD	180163	HR	7298
GC	26507	BD	BD+38 3490	Bayer	Eta Lyrae	Bayer name	Eta Lyr
Flamsteed	20 Lyrae	Flamsteed name	20 Lyr

Tycho2

Tycho2	3121-02285-1	Pflag		RAmdeg	288.43953049	DEmdeg	39.14596968
PmRA	-1.9	PmDE	-0.7	E RAmdeg	3	E DEmdeg	3
E pmRA	0.9	E pmDE	1.0	EpRAm	1991.36	EpDEm	1991.46
Num	16	Q RAmdeg	0.7	Q DEmdeg	0.3	Q pmRA	0.6
Q pmDE	0.5	BTmag	4.203	E BTmag	0.014	VTmag	4.373
E VTmag	0.009	Prox	999	TYC	T	HIP	94481
CCDM		RAdeg	288.43953639	DEdeg	39.14597139	EpRA 1990	1.54
EpDE 1990	1.61	E RAdeg	3.3	E DEdeg	3.2	Posflg
Corr	0.1

SAO

SAO	68010	DelFlag		RA1950		PmRA1950	0
DE1950		PmDE1950	0.003	Vmag	4.5	SpType	B3
Double code		Source	70	CatNum	26507	DM	BD+38 3490
DMcomp		BDsup		HD	180163	M HD	0
GC	26507	RA1950rad	5.0267875	DE1950rad	0.68170665	PmRA2000	0.0003
PmDE2000	0.002

Hipparcos

Catalog	H	HIP	94481	Proxy		RAhms	19 13 45.49
DEdms	+39 08 45.5	Vmag	4.43	VarFlag	1	R Vmag	H
RAdeg	288.44	DEdeg	39.146	AstroRef		Plx	3.13
CCDM	19138+3908	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual	S	M HIP
Theta		Rho		HD	180163	BD	BD+38 3490
CD		CP		Dm number	+38 3490	VIred	-0.19
SpType	B2.5IV	R SpType		Coord arcsec 2000	191345.49+390845.5

Hipparcos 2

HIP	94481	Sn	5	So	0	Nc	1
RArad	5.0342196059	DErad	0.6832260611	Plx	2.35	PmRA	-0.6
PmDE	-1.26	E RArad	0.1	E DErad	0.11	E Plx	0.13
E pmRA	0.12	E pmDE	0.15	Hpmag	4.3591	E Hpmag	0.0006
SHp	0.007	VA	0	BV	-0.15	E BV	0.002
VI	-0.19

19138+3909 B

Coord arcsec 2000	191347.36+390850.0		Mag	8.58		PmRA	3.00		PmDE	7.0
Calc delta mag	4.2		Calc coord	yes

19138+3909 C

Coord arcsec 2000	191350.76+390624.7		Mag	11.42		PmRA	-8.00		PmDE	-9.0
Tycho2	3121-00645-1		Calc delta mag	7.04		Calc coord	yes

Tycho2

Tycho2	3121-00645-1	Pflag		RAmdeg	288.46769992	DEmdeg	39.10668041
PmRA	-8.0	PmDE	-6.3	E RAmdeg	57	E DEmdeg	63
E pmRA	2.7	E pmDE	2.5	EpRAm	1978.23	EpDEm	1974.80
Num	6	Q RAmdeg	2.1	Q DEmdeg	1.5	Q pmRA	2.1
Q pmDE	1.5	BTmag	13.383	E BTmag	0.345	VTmag	11.423
E VTmag	0.095	Prox	999	TYC	T	HIP
CCDM		RAdeg	288.46774833	DEdeg	39.10668250	EpRA 1990	1.52
EpDE 1990	1.55	E RAdeg	191.5	E DEdeg	198.1	Posflg
Corr	0.0