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

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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

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WDS 18093+1329 (HD 166256) : ALADIN DSS IMAGE @

DSS color DSS blue 2MASS AllWISE GALEX SDSS9 XMM PanSTARRS

Error -22130
Not valid ID.

Error -22130
Not valid ID.
Error -27220
Not valid ID.