15261+2128 STF 1942 (HD 137556)

15^h 26^m 03.11^s +21° 27' 35.7" P.A. 91.00 sep 9.7 mag 9.49,10.68 Sp G5 dist. 584.8 pc (1907.62 l.y.)

Coord 2000	15261+2128	Discov num	STF1942	Comp		Coord arcsec 2000	15 26 03.11 +21 27 35.7
Date first	1830	Date last	2019	Obs	39
Pa first	92	Pa last	91.4	P.A. Now (θ)	91.4°
Sep first	9.2	Sep last	9.749	Sep. Now (ρ)	9.749"
Mag pri	9.49	Mag sec	10.68	delta mag (ΔM)	1.19	Spectral class	G5 (yellow)
Pri motion ra	+001	Sec motion ra	+002
Pri motion dec	+011	Sec motion dec	+009
Notes

rPM=0.202 (< 0.3, Physical double)

This double is physical.

OTHER CATALOGS AND DESIGNATIONS

Name	HD 137556	Constellation	Serpens	SAO	83816	HIP	75548
Tycho2	1493-01503-1	Gaia DR2	1214378505178811520	HD	137556	GC	20748
BD	BD+21 2770	Distance	584.8	Distance ly	1907.62

WDS 15261+2128 STF 1942 (HD 137556) : 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
15261+2128	STF1942		2007	25	91	9.7	9.49	10.68	G5	D	152603.11+212735.7
15261+2128	STF1942		2008	26	91	9.6	9.49	10.68	G5	D	152603.11+212735.7
15261+2128	STF1942		2010	28	91	9.7	9.49	10.68	G5		152603.11+212735.7
15261+2128	STF1942		2017	29	92	9.7	9.49	10.68	G5		152603.11+212735.7
15261+2128	STF1942		2018	31	92	9.6	9.49	10.68	G5		152603.11+212735.7
15261+2128	STF1942		2019	38	91	9.7	9.49	10.68	G5		152603.11+212735.7

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WDS 15261+2128 STF 1942 (HD 137556) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 15261+2128 STF 1942 (HD 137556) : MEASURES

No records found.

WDS 15261+2128 (HD 137556) : VIRTUAL EYEPIECE

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WDS 15261+2128 (HD 137556) : 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.