11503+3741 HDS1670AB (HU UMa)

 
 
11h 50m 19.06s +37 40' 51.7" P.A. 22 sep 1.2 mag 11.95,12.50 Sp M0V dist. 63.65 pc (207.63 l.y.)
 
 
Coord 2000
11503+3741
Discov num
HDS1670
Comp
AB
Coord arcsec 2000
11 50 19.06 +37 40 51.7
Date first
1991
Date last
2012
Obs
5
Pa first
28
Pa last
22
P.A. Now (θ)
22°
Sep first
1.2
Sep last
1.2
Sep. Now (ρ)
1.2"
Mag pri
11.95
Mag sec
12.50
delta mag (ΔM)
0.55
Spectral class
M0V (red)
Pri motion ra
-131
Sec motion ra
-131
Pri motion dec
-074
Sec motion dec
-074
Notes
N (See Notes)
Nature of this double is uncertain.
 
 
11503+3741 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show HU UMa 11503+3741 HDS1670 AB 1991 2012 5 22 1.2 11.95 12.50 0.55 <===
Show 11503+3741 HJ 510 AB,C 1827 2016 13 253 25.0 11.95 11.88 0.07
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
21.7
Precise sep
1.239
Var name
HU UMa
Constellation
Ursa Major
HIP
57731
Tycho2
3014-00564-1
Distance
63.65
Distance ly
207.63
last precise pa
21.7
last precise sep
1.239
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11503+3741 HDS1670 AB 1991 2 24 1.4 11.95 12.50 M0V 115019.06+374051.7
11503+3741 HDS1670 AB 2008 3 23 1.2 11.95 12.50 M0V N 115019.06+374051.7
11503+3741 HDS1670 AB 2012 5 22 1.2 11.95 12.50 M0V N 115019.06+374051.7

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