18403+3425 HDS 2645 AB (HD 172715)

18^h 40^m 16.21^s +34° 25' 01.6" P.A. 19.00 sep 1.9 mag 7.69,11.72 Sp K0 dist. 344.83 pc (1124.84 l.y.)

Coord 2000	18403+3425	Discov num	HDS2645	Comp	AB	Coord arcsec 2000	18 40 16.21 +34 25 01.6
Date first	1991	Date last	2016	Obs	11
Pa first	20	Pa last	18.8	P.A. Now (θ)	18.8°
Sep first	1.8	Sep last	1.888	Sep. Now (ρ)	1.888"
Mag pri	7.69	Mag sec	11.72	delta mag (ΔM)	4.03	Spectral class	K0 (yellow-orange)
Pri motion ra	+003	Sec motion ra	+002
Pri motion dec	-003	Sec motion dec	-002
Notes

rPM=0.333

Nature of this double is uncertain.

18403+3425 SYSTEM COMPONENTS

Show	name	SAO	coord	wds_name	last	obs	pa	sep	mag1	mag2	d_mag	orb	current
Show		67232	18 40 16 +34 25 02	GII 270 Aa,Ab	2014	1	109	0.2	8.40	8.40	0.00
Show	HD 172715	67232	18 40 16 +34 25 02	HDS 2645 AB	2016	11	19	1.9	7.69	11.72	4.03		<===

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS

Name	HD 172715	Constellation	Lyra	SAO	67232	HIP	91554
Tycho2	2645-01906-1	HD	172715	BD	BD+34 3274	Distance	344.83
Distance ly	1124.84

WDS 18403+3425 HDS 2645 AB (HD 172715) : NOTES

No records found.

REFERENCES

refcode	metd	author	reference
Gii1991	Ma j	Gili, R.	1991AN....312...41G
Gii1991		AN 312, 41, 1991
Gii1994	M+ j	Gili, R. (Couteau & Gili)	1994A&AS..106..377G
Gii1994	+C	A&AS 106, 377, 1994
Gii1997	M+ j	Gili, R. & Couteau, P.	1997A&AS..126....1G
Gii1997	+C	A&AS 126, 1, 1997
Gii2001	C j	Gili, R. & Bonneau, D.	2001A&A...378..954G
Gii2001		A&A 378, 954, 2001
Gii2008	C j	Gili, R.	2008IAUDS.165....1G
Gii2008		Inf. Circ. 165, 1, 2008
Gii2009	S j	Gili, R.	2009IAUDS.168....1G
Gii2009	+orb	Inf. Circ. 168, 1, 2009
Gii2009b	C j	Gili, R. & Agati, J.-L.	2009O&T....73....9G
Gii2009b	+S	Obs. et Travaux 73, 9, 2009
Gii2009c	C j	Gili, R. & Agati, J.-L.	2009O&T....74...14G
Gii2009c	+S	Obs. et Travaux 74, 14, 2009
Gii2012	S j	Gili, R. & Prieur, J.-L.	2012AN....333..727G
Gii2012	+Cl	AN 333, 727, 2012
Gii2016	S j	Gili, R.	2016IAUDS.190....4G
Gii2016	+Cl	Inf. Circ. 190, 4, 2016
Gii2016b	Cl	Gili, R.
Gii2016b		private comm. (email 27 Aug 2016)
Gii2020	S	Gili, R., Prieur, J.-L., Rivet, J.-P., Scardia, M., Pansecchi, L., Argyle, R.W.,	2020AN....341..441G
Gii2020	+Cl	Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D. & Maccarini, L.
Gii2020		AN 341, 441, 2020
Gii2021	S	Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L.,	2021AN....342..865G
Gii2021		Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2021		Maccarini, L. & Serot, J.
Gii2021		AN 342, 865, 2021
Gii2022	S	Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L.,	2022AN....34324008G
Gii2022		Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2022		Maccarini, L. & Serot, J.
Gii2022		AN 343, 24008, 2022
Gii2022		errata for Gii2022 (source of code "P" measures in wds)	2023AN....34437001G
Gii2022		AN 344, 37001, 2023
HDS		Hipparcos Double Star (from additional DD list)	...................

WDS HISTORIC DATA

coord_2000	discov_num	comp	epoch	obs	pa	sep	mag_pri	mag_sec	spectr	notes	coord_arcsec_2000
18403+3425	HDS2645	AB	2016	11	19	1.9	7.69	11.72	K0		184016.21+342501.6

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WDS 18403+3425 HDS 2645 AB (HD 172715) : VISUAL OBSERVATIONS REPORTS

No records found.

WDS 18403+3425 HDS 2645 AB (HD 172715) : MEASURES

No records found.

WDS 18403+3425 (HD 172715) : VIRTUAL EYEPIECE

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WDS 18403+3425 (HD 172715) : 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.