19200-0638 STF 2494 (HD 181255)

19^h 20^m 02.80^s -06° 37' 40.8" P.A. 89.00 sep 25.7 mag 6.98,10.40 Sp K0 dist. 204.92 pc (668.45 l.y.)

Coord 2000	19200-0638	Discov num	STF2494	Comp		Coord arcsec 2000	19 20 02.80 -06 37 40.8
Date first	1827	Date last	2006	Obs	20
Pa first	81	Pa last	88.7	P.A. Now (θ)	88.7°
Sep first	25.0	Sep last	25.67	Sep. Now (ρ)	25.67"
Mag pri	6.98	Mag sec	10.40	delta mag (ΔM)	3.42	Spectral class	K0 (yellow-orange)
Pri motion ra	+005	Sec motion ra	+013
Pri motion dec	-015	Sec motion dec	-051
Notes

rPM=0.701

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 181255	Constellation	Aquila	SAO	143275	HIP	95021
Tycho2	5142-02917-1	Gaia DR2	4210909361489668992	HD	181255	GC	26655
BD	BD-06 5103	Distance	204.92	Distance ly	668.45

WDS 19200-0638 STF 2494 (HD 181255) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
STFA		(F. Struve DD - Appendix list #1)	...................
STFB		(F. Struve DD - Appendix list #2)	...................
StF1833A	Ma -	Struve, F.G.W.	1833MmRAS...5...13H
StF1833A	+Mc	cited by Herschel (MemRAS 5, 13, 1833)
StF1833B	Ma -	Struve, F.G.W.	1833AN.....10..389B
StF1833B		cited by Bessel (AN 10, 389, 1833)
StF1837	Ma -	Struve, F.G.W.	1837AN.....14...249
StF1837		Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837		(Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A	Ma -	Struve, F.G.W.	1844QB43.S66.......
StF1844A		cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A	Ma -	Struve, F.G.W.	.
StF1852A		cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A	Ma -	Struve, F.G.W.	1865AN.....64...81E
StF1865A		cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A	Ma -	Struve, F.G.W.	1875AN.....85..323D
StF1875A		cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878	Ma -	Struve, F.G.W.	.
StF1878		Pulkova Observations 9, 1878
StF1878B	Ma -	Struve, F.G.W.	1878Obs.....2..239G
StF1878B		cited by Gledhill (Obs 2, 239, 1878)
StF1880A	Ma -	Struve, F.G.W.	1880Obs.....3..535G
StF1880A		cited by Gledhill (Obs 3, 535, 1880)
StF1906A	Ma -	Struve, F.G.W.	1906QB821.B972.....
StF1906A		cited in BDS (Burnham Double Star Cat.), 1906
StF1906B	Ma -	Struve, F.G.W.	1906MmRAS..56....1L
StF1906B		cited by Lewis (MemRAS 56, 1, 1906)
StF1922A	Ma -	Struve, F.G.W.	1922AN....216...49R
StF1922A		cited by Rabe (AN 216, 49, 1922)
StF1932A	Ma -	Struve, F.G.W.	1932QB821.A43......
StF1932A		cited in ADS (Aitken Double Star Cat.), 1932
StF2002	- -	Weis, J.
StF2002		F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002		USNO Library : QB 821 .S8 W49 2002
StF2022	- -	email note from Jan Weis: 6 July 2022
StF9999	Ma -	Struve, F.G.W.	...................
StF9999		Unpublished, manuscript or reference not found.

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
19200-0638	STF2494		2006	15	89	25.7	6.98	10.40	K0		192002.80-063740.8

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

WDS 19200-0638 STF 2494 (HD 181255) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 19200-0638 STF 2494 (HD 181255) : MEASURES

No records found.

WDS 19200-0638 (HD 181255) : 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 19200-0638 (HD 181255) : ALADIN DSS IMAGE @ 19^h 20^m 02.80^s -06° 37' 40.8"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 19200-0638 STF 2494 (HD 181255) : 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		19200-0638	STF2494		89	25.7	1
Show		19201-0640	TDT1381		177	2.4	3
Show		19206-0645	HDS2735	AB	345	0.1	11
Show		19206-0645	TOK 432	AC	57	1.0	11
Show		19185-0640	DAM 150		33	9.5	23
Show		19182-0636	DAM 149		279	7.7	28
Show		19181-0638	DAM 148	AB	333	6.0	30
Show		19181-0638	DAM 148	AC	229	5.6	30
Show		19179-0638	DAM 147		25	8.0	33
Show		19183-0658	RST4626		248	2.4	33
Show		19205-0603	A 101		36	3.5	36
Show		19184-0641	J 2260		225	4.1	36
Show		19176-0700	J 2691		11	3.2	41
Show		19227-0612	JNN 123		80	0.1	47
Show		19231-0653	RST4627		197	0.7	49
Show		19233-0635	HDS2745	AB	10	1.3	49
Show		19233-0635	GII 282	Aa,Ab	121	0.1	49
Show		19227-0708	STF2503		285	2.4	50
Show		19188-0546	HO 575		10	5.8	55
Show		19170-0713	BRT 492		189	5.4	58
Show		19206-0740	WRH 31	BC	112	3.8	63
Show		19206-0740	LMP 41	BD	321	21.2	63
Show		19206-0740	LDS 678	AB	305	27.3	63
Show		19222-0735	A 102	AB	270	0.2	66
Show		19222-0735	HO 104	AB,C	123	5.5	66
Show		19231-0733	TDT1411		84	0.5	72
Show		19205-0525	ISO 10	Aa,Ab	56	0.5	74
Show		19205-0525	BUP 189	AB	6	112.1	74
Show		19172-0741	KPP1697		196	13.1	77
Show		19181-0525	HJ 881	AB	340	32.0	78
Show		19181-0525	ABH 114	AD	250	86.9	78
Show		19181-0525	HO 574	AE	62	15.6	78
Show		19181-0525	HDS2731	Ba,Bb	218	1.1	79
Show		19181-0525	HJ 881	BC	307	7.4	79
Show		19183-0520	GMC 19		85	8.3	82
Show		19161-0736	GWP2830	AB	275	200.5	83
Show		19154-0737	RST4625		156	0.7	90
Show		19215-0807	J 2265		278	3.5	93
Show		19139-0622	RST4624		166	2.4	94
Show		19267-0638	RST4629		90	0.7	99
Show		19236-0801	TDT1419		95	0.6	99
Show		19202-0454	GWP2840		26	59.8	104
Show		19254-0528	TDT1445		104	0.6	107
Show		19260-0538	NSN 147		256	4.7	107
Show		19173-0817	TDT1353		116	1.0	108
Show		19134-0545	J 2583	AB	162	4.2	110
Show		19134-0545	J 2583	AC	315	34.8	110
Show		19243-0813	TDT1430		282	0.4	115
Show		19225-0447	J 1673		93	5.0	117
Show		19221-0444	STF2501	AB	21	20.0	118
Show		19221-0444	STF2501	AC	79	7.9	118

WDS 19200-0638 : COMPONENTS

	A
B	pa=88.7° sep=25.50"

19200-0638 A

Componente originario normalizzato	AB	Name	HD 181255	Coord arcsec 2000	192002.80-063740.8	Mag	6.98
Spectral class	K0 (yellow-orange)	PmRA	5.00	PmDE	-15.0	SAO	143275
HIP	95021	Tycho2	5142-02917-1	HD	181255	GC	26655
BD	BD-06 5103

Tycho2

Tycho2	5142-02917-1	Pflag		RAmdeg	290.01167388	DEmdeg	-6.62800442
PmRA	5.8	PmDE	-13.7	E RAmdeg	4	E DEmdeg	5
E pmRA	1.0	E pmDE	1.1	EpRAm	1991.46	EpDEm	1991.22
Num	13	Q RAmdeg	0.5	Q DEmdeg	0.8	Q pmRA	0.5
Q pmDE	0.8	BTmag	9.018	E BTmag	0.017	VTmag	6.978
E VTmag	0.010	Prox	258	TYC	T	HIP	95021
CCDM		RAdeg	290.01166056	DEdeg	-6.62797333	EpRA 1990	1.87
EpDE 1990	1.76	E RAdeg	4.0	E DEdeg	4.8	Posflg
Corr	-0.1

SAO

SAO	143275	DelFlag		RA1950		PmRA1950	-0.0003
DE1950		PmDE1950	-0.013	Vmag	7	SpType	K0
Double code		Source	70	CatNum	26655	DM	BD-06 5103
DMcomp		BDsup		HD	181255	M HD	0
GC	26655	RA1950rad	5.04993424	DE1950rad	-0.11731429	PmRA2000	-0.0001
PmDE2000	-0.013

Hipparcos

Catalog	H	HIP	95021	Proxy		RAhms	19 20 02.80
DEdms	-06 37 40.7	Vmag	6.76	VarFlag	1	R Vmag	H
RAdeg	290.012	DEdeg	-6.62797	AstroRef		Plx	2.96
CCDM	19200-0638	N CCDM	I	Nsys	1	Ncomp	1
MultFlag		Source		Qual		M HIP
Theta		Rho		HD	181255	BD	BD-06 5103
CD		CP		Dm number	-06 5103	VIred	1.65
SpType	K0	R SpType		Coord arcsec 2000	192002.80-063740.7

Hipparcos 2

HIP	95021	Sn	5	So	0	Nc	1
RArad	5.0616582912	DErad	-0.1156799349	Plx	4.88	PmRA	4.51
PmDE	-14.79	E RArad	0.45	E DErad	0.27	E Plx	0.55
E pmRA	0.58	E pmDE	0.42	Hpmag	6.8672	E Hpmag	0.0016
SHp	0.016	VA	2	BV	1.683	E BV	0.018
VI	1.71

CCDM

Ccdm	19200-0638	RComp		Comp	A	Note1
Note2		Discov num		DRAs	2.73	DDEs	19.2
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	7.1	Sp	K0	PmNote	*
PmRA	-4	PmDE	-13	Dm number	-06 5103	Cat1	BD
Name2	143275	Cat2	SAO	HD	181255	M HD
ADS BDS	A12314	M ADS BDS		N IDS		IDS	19147S0649A
HIC	95021

19200-0638 B

Componente originario normalizzato	AB		Coord arcsec 2000	192004.51-063740.2		Mag	10.4		PmRA	13.00
PmDE	-51.0		Calc delta mag	3.42		Calc coord	yes

CCDM

Ccdm	19200-0638	RComp		Comp	B	Note1
Note2		Discov num	STF2494	DRAs		DDEs
R dRAs		Year	1932	Theta	085	Rho	25.9
Obs	6	Vmag	10.1	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A12314	M ADS BDS	N	N IDS		IDS	19147S0649B
HIC