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Current system
16212-2536
NOR 1 Aa1,2


Nearby doubles
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RAT 1AB

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REP 33

67' : 16163-2542
USD1141

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TOK 769

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ELP 36

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LDS 557

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Binocular doubles
Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 16212-2536 : COMPONENTS
 
 
  A Aa2 Ab
Aa2 pa=88.3°
sep=0.00"
 
Ab pa=214.3°
sep=0.41"
pa=214.6°
sep=0.41"
 
B pa=268.9°
sep=18.47"
pa=268.9°
sep=18.47"
pa=269.9°
sep=18.24"
 
 
16212-2536 A
 
 
Common name Alniyat Meaning support / shield of the heart Other names Al Niyat Coord arcsec 2000 162111.32-253533.9
Mag 2.89 Spectral class B0III (blue-white) PmRA -10.00 PmDE -21.0
SAO 184336 HIP 80112 Tycho2 6798-00540-1 HD 147165
HR 6084 GC 21982 CD CD-2511485 CP CP-25 5785
Bayer Sigma Scorpii Bayer name Sig Sco Flamsteed 20 Scorpii Flamsteed name 20 Sco
FK5 607
Tycho2
Tycho2 6798-00540-1 Pflag RAmdeg 245.29713575 DEmdeg -25.59280657
PmRA -9.9 PmDE -21.1 E RAmdeg 3 E DEmdeg 3
E pmRA 0.4 E pmDE 0.5 EpRAm 1991.07 EpDEm 1990.71
Num 30 Q RAmdeg 1.3 Q DEmdeg 2.0 Q pmRA 1.5
Q pmDE 1.6 BTmag 3.024 E BTmag 0.014 VTmag 2.911
E VTmag 0.009 Prox 999 TYC T HIP 80112
CCDM AC RAdeg 245.29716139 DEdeg -25.59275556 EpRA 1990 1.71
EpDE 1990 1.30 E RAdeg 3.2 E DEdeg 3.4 Posflg P
Corr 0.2
SAO
SAO 184336 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 -0.023 Vmag 3.1 SpType B1
Double code Source 74 CatNum 607 DM CD-2511485
DMcomp BDsup HD 147165 M HD 0
GC 21982 RA1950rad 4.26796029 DE1950rad -0.44461361 PmRA2000 -0.0008
PmDE2000 -0.02
Hipparcos
Catalog H HIP 80112 Proxy H RAhms 16 21 11.32
DEdms -25 35 33.9 Vmag 2.9 VarFlag 1 R Vmag G
RAdeg 245.297 DEdeg -25.5928 AstroRef A Plx 4.44
CCDM 16212-2536 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 258 Rho 0.428 HD 147165 BD
CD CD-2511485 CP CP-25 5785 Dm number -2511485 VIred 0.31
SpType B1III R SpType Coord arcsec 2000 162111.32-253533.9
Hipparcos 2
HIP 80112 Sn 15 So 3 Nc 2
RArad 4.281243391 DErad -0.4466777959 Plx 4.68 PmRA -10.6
PmDE -16.28 E RArad 0.58 E DErad 0.35 E Plx 0.6
E pmRA 0.78 E pmDE 0.43 Hpmag 2.9227 E Hpmag 0.0026
SHp 0.024 VA 1 BV 0.299 E BV 0.003
VI 0.31
CCDM
Ccdm 16212-2536 RComp Comp A Note1
Note2 Discov num DRAs -0.69 DDEs 25.9
R dRAs 82 Year Theta Rho
Obs 3 Vmag 3.1 Sp B1 PmNote *
PmRA -10 PmDE -18 Dm number -2511485 Cat1 CD
Name2 184336 Cat2 SAO HD 147165 M HD
ADS BDS A10009 M ADS BDS N IDS IDS 16151S2521A
HIC 80112
 
 
16212-2536 Aa2
 
 
Coord arcsec 2000 162111.32-253533.9 Mag 4.1 Spectral class B7 (blue-white) Calc delta mag 0.8
Calc coord yes
 
 
16212-2536 Ab
 
 
Coord arcsec 2000 162111.30-253534.2 Mag 5.24 Calc delta mag 1.94 Calc coord yes
 
 
16212-2536 B
 
 
Coord arcsec 2000 162109.95-253534.3 Mag 8.42 Spectral class B8V (blue-white) Calc delta mag 5.12
Calc coord yes
CCDM
Ccdm 16212-2536 RComp Comp B Note1
Note2 Discov num H 121 DRAs DDEs
R dRAs Year 1959 Theta 273 Rho 20.0
Obs 23 Vmag 8.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A10009 M ADS BDS N N IDS IDS 16151S2521B
HIC