18028+7547 STF2302AB

 
 
18h 02m 50.94s +75 47' 24.3" P.A. 249 sep 5 mag 7.03,9.97 Sp A0V dist. 141.04 pc (460.07 l.y.)
 
 
Coord 2000
18028+7547
Discov num
STF2302
Comp
AB
Coord arcsec 2000
18 02 50.94 +75 47 24.3
Date first
1833
Date last
2013
Obs
27
Pa first
246
Pa last
249
P.A. Now (θ)
249°
Sep first
5.8
Sep last
5.0
Sep. Now (ρ)
5"
Mag pri
7.03
Mag sec
9.97
delta mag (ΔM)
2.94
Spectral class
A0V (white)
Pri motion ra
-012
Sec motion ra
-012
Pri motion dec
+041
Sec motion dec
+041
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
18028+7547 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 8999 18028+7547 STF2302 AB 1833 2013 27 249 5.0 7.03 9.97 2.94 <===
Show 8999 18028+7547 STF2302 AC 1833 2013 38 277 22.9 7.03 9.66 2.63
Show 8999 18028+7547 STF2302 BC 1833 2013 19 282 18.9 9.97 8.10 1.87
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
248.5
Precise sep
5
Constellation
Draco
SAO
8999
HIP
88379
Tycho2
4570-02411-1
HD
166655
BD
BD+75 655
Distance
141.04
Distance ly
460.07
last precise pa
248.5
last precise sep
5
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18028+7547 STF2302 AB 2002 18 247 5.5 7.03 9.97 A0V D 180250.94+754724.3
18028+7547 STF2302 AB 2010 19 248 5.7 7.03 9.97 A0V D 180250.94+754724.3
18028+7547 STF2302 AB 2013 27 249 5.0 7.03 9.97 A0V N D 180250.94+754724.3

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