18090-3617 SHY 738 AB (HD 165728)

18^h 09^m 01.96^s -36° 17' 05.2" P.A. 254.00 sep 999.9 mag 8.56,9.01 Sp G2V+G5V dist. 88.34 pc (288.17 l.y.)

Coord 2000	18090-3617	Discov num	SHY 738	Comp	AB	Coord arcsec 2000	18 09 01.96 -36 17 05.2
Date first	1991	Date last	1998	Obs	4
Pa first	253	Pa last	253.5	P.A. Now (θ)	253.5°
Sep first	999.9	Sep last	4915.38	Sep. Now (ρ)	4915.38"
Mag pri	8.56	Mag sec	9.01	delta mag (ΔM)	0.45	Spectral class	G2V+G5V (yellow/yellow)
Pri motion ra	-018	Sec motion ra	-019
Pri motion dec	-004	Sec motion dec	-006
Notes	N V (See Notes, Proper motion indicates physical)

rPM=0.112 (< 0.3, Physical double)

This double is physical.

18090-3617 SYSTEM COMPONENTS

Triple system
2 estimated visually detectable stars in this system

OTHER CATALOGS AND DESIGNATIONS