23479+1703 STF 3041 A,BC

23^h 47^m 51.79^s +17° 03' 21.6" P.A. 358.00 sep 60.5 mag 8.35,8.36 Sp A6III dist. 198.02 pc (645.94 l.y.)

Coord 2000	23479+1703	Discov num	STF3041	Comp	A,BC	Coord arcsec 2000	23 47 51.79 +17 03 21.6
Date first	1832	Date last	2017	Obs	20
Pa first	348	Pa last	358	P.A. Now (θ)	358°
Sep first	71.1	Sep last	60.5	Sep. Now (ρ)	60.5"
Mag pri	8.35	Mag sec	8.36	delta mag (ΔM)	0.01	Spectral class	A6III (white)
Pri motion ra	+017	Sec motion ra	+083
Pri motion dec	-010	Sec motion dec	-078
Notes	N (See Notes)

rPM=0.832

This double is not physical.

23479+1703 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show	HD 223249	108841	23 47 52 +17 03 22	STF 3041 AB	2018	48	356	61.1	8.35	9.05	0.70
Show		108841	23 47 52 +17 03 22	STF 3041 A,BC	2017	20	358	60.5	8.35	8.36	0.01		<===
Show		108841	23 47 52 +17 03 22	STF 3041 AC	2018	28	358	59.5	8.35	9.18	0.83
Show		108840	23 47 52 +17 04 19	STF 3041 BC	2020	109	356	3.4	9.18	9.04	0.14

Triple system
4 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Constellation	Pegasus	SAO	108841	HIP	117366	Tycho2	1721-01288-1
Gaia DR2	2820009216554179072	HD	223249	BD	BD+16 4990	Distance	198.02
Distance ly	645.94

WDS 23479+1703 STF 3041 A,BC : NOTES

discov_num	notes	refcode
STF3041	STTA249.

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
23479+1703	STF3041	A,BC	1923	15	352	64.6	8.35	8.36	A6III	N D	234751.79+170321.6
23479+1703	STF3041	A,BC	2010	16	358	59.4	8.35	8.36	A6III	N D	234751.79+170321.6
23479+1703	STF3041	A,BC	2011	18	358	60.2	8.35	8.36	A6III	N D	234751.79+170321.6
23479+1703	STF3041	A,BC	2016	19	358	58.3	8.35	8.36	A6III	N	234751.79+170321.6
23479+1703	STF3041	A,BC	2017	20	358	60.5	8.35	8.36	A6III	N	234751.79+170321.6

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

WDS 23479+1703 STF 3041 A,BC : VISUAL OBSERVATIONS REPORTS

Show	date	username	difficulty	separation	pa_estim	interest	notes
Show	23/07/24	Daedalus1	mean difficulty	separated	358		Very interesting! BC split makes this a 1+2 system. BC seems to have almost the same position angle as A,BC. Primary is white, companion seems a little yellow.

WDS 23479+1703 STF 3041 A,BC : MEASURES

Records found: 1

Show	date	username	difficulty	sep	sep_sigma	pa	pa_sigma	delta_mag	#	notes
Show	23/07/24	Daedalus1	mean difficulty	60.19	0.09	358.00	0.00	0.65	12	Seeing: Pickering 5, poor

WDS 23479+1703 : VIRTUAL EYEPIECE

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WDS 23479+1703 : 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.