20153+2536 BU  983AB (QR Vul)

 
 
20h 15m 15.89s +25 35' 31.1" P.A. 185 sep 0.5 mag 4.80,7.55 Sp B3V dist. 303.95 pc (991.48 l.y.)
 
 
Coord 2000
20153+2536
Discov num
BU  983
Comp
AB
Coord arcsec 2000
20 15 15.89 +25 35 31.1
Date first
1879
Date last
2011
Obs
30
Pa first
154
Pa last
185
P.A. Now (θ)
185°
Sep first
0.8
Sep last
0.5
Sep. Now (ρ)
0.5"
Mag pri
4.80
Mag sec
7.55
delta mag (ΔM)
2.75
Spectral class
B3V (blue-white)
Pri motion ra
+002
Sec motion ra
Pri motion dec
-007
Sec motion dec
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
20153+2536 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show QR Vul 88410 20153+2536 BU 983 AB 1879 2011 30 185 0.5 4.80 7.55 2.75 <===
Show 20153+2536 BU 983 AC 1912 2015 6 83 115.7 4.80 9.70 4.90
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
185.4
Precise sep
0.47
Var name
QR Vul
Constellation
Vulpecula
SAO
88410
HIP
99824
Tycho2
2159-02068-1
Gaia DR2
77682835200
HD
192685
HR
7739
BD
BD+25 4165
Distance
303.95
Distance ly
991.48
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20153+2536 BU 983 AB 2004 26 183 0.5 4.80 7.55 B3V N D 201515.89+253531.1
20153+2536 BU 983 AB 2007 29 184 0.5 4.80 7.55 B3V N D 201515.89+253531.1
20153+2536 BU 983 AB 2011 30 185 0.5 4.80 7.55 B3V N 201515.89+253531.1

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