18093+1329 STF 2285 (HD 166256)

18^h 09^m 15.12^s +13° 29' 06.2" P.A. 333.00 sep 3.6 mag 8.75,9.82 Sp A0 dist. 1408.45 pc (4594.36 l.y.)

Coord 2000	18093+1329	Discov num	STF2285	Comp		Coord arcsec 2000	18 09 15.12 +13 29 06.2
Date first	1830	Date last	2015	Obs	33
Pa first	339	Pa last	332.6	P.A. Now (θ)	332.6°
Sep first	3.5	Sep last	3.604	Sep. Now (ρ)	3.604"
Mag pri	8.75	Mag sec	9.82	delta mag (ΔM)	1.07	Spectral class	A0 (white)
Pri motion ra	+005	Sec motion ra	+001
Pri motion dec	-019	Sec motion dec	-006
Notes

rPM=0.692

Nature of this double is uncertain.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 166256	Constellation	Ophiuchus	SAO	103430	HIP	88938
Tycho2	1021-00669-1	Gaia DR2	4497240979828383872	HD	166256	GC	24751
BD	BD+13 3540	Distance	1408.45	Distance ly	4594.36

WDS 18093+1329 STF 2285 (HD 166256) : 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
18093+1329	STF2285		2001	27	334	3.6	8.75	9.82	A0	D	180915.12+132906.2
18093+1329	STF2285		2010	29	334	3.7	8.75	9.82	A0	D	180915.12+132906.2
18093+1329	STF2285		2011	32	331	3.6	8.75	9.82	A0		180915.12+132906.2
18093+1329	STF2285		2015	33	333	3.6	8.75	9.82	A0		180915.12+132906.2

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

WDS 18093+1329 STF 2285 (HD 166256) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18093+1329 STF 2285 (HD 166256) : MEASURES

No records found.

WDS 18093+1329 (HD 166256) : 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 18093+1329 (HD 166256) : ALADIN DSS IMAGE @ 18^h 09^m 15.12^s +13° 29' 06.2"

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

WDS 18093+1329 STF 2285 (HD 166256) : 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		18093+1329	STF2285		333	3.6
Show		18085+1324	UC 3504		333	50.0	13
Show		18083+1318	GWP2760	AB	11	28.6	18
Show		18083+1318	GWP2761	AC	40	99.6	18
Show		18083+1318	GWP2762	AD	73	159.4	18
Show		18094+1311	HEI 558		142	2.7	19
Show		18082+1346	TDS 906		29	1.2	23
Show		18078+1304	H 5 74		140	42.7	33
Show		18096+1255	BPM 736		193	85.2	35
Show		18115+1307	BPM 738		48	107.9	39
Show		18117+1313	BRT1294		281	3.9	40
Show		18086+1245	HDS2556		124	0.5	46
Show		18109+1251	ROE 110		135	3.8	46
Show		18067+1359	AG 358	AB	330	3.7	48
Show		18067+1359	FOX 219	AD	318	86.4	48
Show		18067+1359	COU 8	BC	120	0.9	48
Show		18089+1239	TDT 708		83	1.0	51
Show		18128+1329	BPM 742		173	102.2	52
Show		18069+1408	FAL 61		129	6.5	52
Show		18075+1415	TDS 905		115	1.3	53
Show		18116+1247	BRT1293		74	5.4	54
Show		18061+1257	BPM 722		340	105.0	57
Show		18081+1232	BPM 727		203	43.6	60
Show		18057+1253	SLE 129		272	11.0	63
Show		18053+1400	BPM 720		327	54.4	66
Show		18048+1333	HJ 1312		60	25.2	67
Show		18116+1426	UC 3525		289	65.8	67
Show		18076+1225	HEI 556		114	1.8	69
Show		18046+1329	HJ 1311	CF	55	7.4	69
Show		18056+1242	J 1220		128	1.5	72
Show		18141+1314	J 2122		329	5.6	72
Show		18062+1427	BPM 723		255	80.4	74
Show		18095+1216	SKF1352		42	14.3	74
Show		18143+1333	BPM 745		73	29.0	74
Show		18048+1253	BPM 719		277	18.7	75
Show		18075+1443	BPM 726		236	23.4	79
Show		18148+1327	HJ 1316		250	14.0	82
Show		18126+1224	HDS2570		352	0.1	82
Show		18076+1210	TDT 697		167	2.2	83
Show		18150+1338	BPM 747		55	99.8	85
Show		18046+1240	HDS2545		121	0.1	85
Show		18126+1215	GWP2768		268	11.3	89
Show		18092+1458	BPM 732		187	35.7	89
Show		18039+1244	SLE 127		304	8.6	90
Show		18115+1455	OSO 94		237	8.9	92
Show		18145+1419	TDT 758		205	1.0	92
Show		18106+1155	BPM 737		261	29.0	97
Show		18151+1415	BPM 748		351	116.9	97
Show		18056+1452	UC 3492		218	13.2	99
Show		18043+1217	UC 3486		177	50.6	103
Show		18057+1200	STF2276	AB	257	7.1	103

WDS 18093+1329 : COMPONENTS

	A
B	pa=333.2° sep=3.58"

18093+1329 A

Componente originario normalizzato	AB	Name	HD 166256	Coord arcsec 2000	180915.12+132906.2	Mag	8.75
Spectral class	A0 (white)	PmRA	5.00	PmDE	-19.0	SAO	103430
HIP	88938	Tycho2	1021-00669-1	HD	166256	GC	24751
BD	BD+13 3540

Tycho2

Tycho2	1021-00669-1	Pflag		RAmdeg	272.31301971	DEmdeg	13.48506558
PmRA	3.5	PmDE	-13.6	E RAmdeg	6	E DEmdeg	7
E pmRA	1.6	E pmDE	1.4	EpRAm	1991.54	EpDEm	1991.32
Num	3	Q RAmdeg	1.2	Q DEmdeg	2.4	Q pmRA	1.1
Q pmDE	2.5	BTmag	8.683	E BTmag	0.016	VTmag	8.752
E VTmag	0.014	Prox	36	TYC	T	HIP	88938
CCDM	A	RAdeg	272.31301111	DEdeg	13.48509722	EpRA 1990	1.70
EpDE 1990	1.58	E RAdeg	6.2	E DEdeg	6.6	Posflg
Corr	0.1

SAO

SAO	103430	DelFlag		RA1950		PmRA1950	0.0007
DE1950		PmDE1950	0.005	Vmag	8.4	SpType	A0
Double code		Source	70	CatNum	24751	DM	BD+13 3540
DMcomp		BDsup		HD	166256	M HD	0
GC	24751	RA1950rad	4.74274242	DE1950rad	0.23519096	PmRA2000	0.0008
PmDE2000	0.005

Hipparcos

Catalog	H	HIP	88938	Proxy	H	RAhms	18 09 15.12
DEdms	+13 29 06.4	Vmag	8.52	VarFlag		R Vmag	G
RAdeg	272.313	DEdeg	13.4851	AstroRef	A	Plx	1.27
CCDM	18093+1329	N CCDM	I	Nsys	1	Ncomp	2
MultFlag	C	Source		Qual	A	M HIP	AB
Theta	333	Rho	3.61	HD	166256	BD	BD+13 3540
CD		CP		Dm number	+13 3540	VIred	0
SpType	A0	R SpType		Coord arcsec 2000	180915.12+132906.4

Hipparcos 2

HIP	88938	Sn	15	So	3	Nc	2
RArad	4.7527585758	DErad	0.2353593857	Plx	0.71	PmRA	0.55
PmDE	-5.77	E RArad	0.75	E DErad	0.72	E Plx	1.1
E pmRA	0.86	E pmDE	0.85	Hpmag	8.4694	E Hpmag	0.0017
SHp	0.018	VA	0	BV	-0.018	E BV	0.013
VI	0

CCDM

Ccdm	18093+1329	RComp		Comp	A	Note1
Note2		Discov num		DRAs	-2.89	DDEs	7.5
R dRAs	10	Year		Theta		Rho
Obs	2	Vmag	8.6	Sp	A0	PmNote	*
PmRA	1	PmDE	-1	Dm number	+13 3540	Cat1	BD
Name2	+13 1766	Cat2	AGK2/3	HD	166256	M HD
ADS BDS	A11108	M ADS BDS		N IDS		IDS	18047N1328A
HIC	88938

18093+1329 B

Componente originario normalizzato	AB		Coord arcsec 2000	180915.01+132909.4		Mag	9.82		PmRA	1.00
PmDE	-6.0		Calc delta mag	1.07		Calc coord	yes

CCDM

Ccdm	18093+1329	RComp		Comp	B	Note1
Note2		Discov num	STF2285	DRAs		DDEs
R dRAs		Year	1830	Theta	334	Rho	3.6
Obs	15	Vmag	10.4	Sp		PmNote
PmRA		PmDE		Dm number		Cat1
Name2		Cat2		HD		M HD
ADS BDS	A11108	M ADS BDS		N IDS		IDS	18047N1328B
HIC	88938