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Doubles in session


Current system
18177-1940
WSI 89 Ba,Bb


Nearby doubles
12' : 18170-1933
B 2862

15' : 18171-1952
HJ 2827

22' : 18174-1920
B 2863

28' : 18196-1944
WRH 30

29' : 18162-1921
B 2439

30' : 18157-1950
B 1884

32' : 18156-1929
RST5108

34' : 18163-1913
B 2440

34' : 18158-2001
CLL 12

35' : 18163-2008
ARA1143

37' : 18154-1956
B 1883

37' : 18186-1906
OCC9181

39' : 18150-1945
TOB 276

39' : 18152-1924
TSN 117

41' : 18147-1939
J 1623

41' : 18150-1955
HJ 2823AB

42' : 18205-1951
DON 892

43' : 18184-1859
OCC9180

44' : 18170-1858
MZA 23AB

44' : 18168-1858
OCC9179

45' : 18167-2022
SKF 99

46' : 18164-1858
B 1885

46' : 18147-1922
OCC 466

47' : 18150-1912
LEO 15AB

48' : 18165-1856
ARA 466

48' : 18210-1939
BU 48AB



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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 18177-1940 : COMPONENTS
 
 
  A B
B pa=0.0°
sep=0.00"
 
Bb pa=323.1°
sep=0.05"
pa=323.1°
sep=0.05"
 
 
18177-1940 A
 
 
Name HD 167815 Coord arcsec 2000 181739.98-194019.9 Mag 8.4 Spectral class B0V (blue-white)
PmRA 2.00 PmDE -2.0 SAO 161273 HIP 89647
Tycho2 6273-00665-1 HD 167815 GC 24954 BD BD-19 4953
Tycho2
Tycho2 6273-00665-1 Pflag RAmdeg 274.41664771 DEmdeg -19.67220790
PmRA 2.4 PmDE -1.7 E RAmdeg 4 E DEmdeg 5
E pmRA 1.2 E pmDE 1.3 EpRAm 1991.47 EpDEm 1991.35
Num 13 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.2 BTmag 7.755 E BTmag 0.016 VTmag 7.640
E VTmag 0.011 Prox 680 TYC T HIP 89647
CCDM AB RAdeg 274.41664194 DEdeg -19.67220389 EpRA 1990 1.78
EpDE 1990 1.72 E RAdeg 4.3 E DEdeg 5.3 Posflg P
Corr -0.1
SAO
SAO 161273 DelFlag RA1950 PmRA1950 0.0022
DE1950 PmDE1950 0.01 Vmag 7.6 SpType B2
Double code Source 70 CatNum 24954 DM BD-19 4953
DMcomp BDsup HD 167815 M HD 0
GC 24954 RA1950rad 4.77656408 DE1950rad -0.34368558 PmRA2000 0.0023
PmDE2000 0.011
Hipparcos
Catalog H HIP 89647 Proxy H RAhms 18 17 39.98
DEdms -19 40 19.8 Vmag 7.55 VarFlag R Vmag G
RAdeg 274.417 DEdeg -19.6722 AstroRef A Plx 2.32
CCDM 18177-1940 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 114 Rho 0.492 HD 167815 BD BD-19 4953
CD CP Dm number -19 4953 VIred 0.16
SpType B1/B2III R SpType Coord arcsec 2000 181739.98-194019.8
Hipparcos 2
HIP 89647 Sn 15 So 3 Nc 2
RArad 4.7894728016 DErad -0.343344278 Plx 2.8 PmRA 0.29
PmDE 0.34 E RArad 1.02 E DErad 0.68 E Plx 1.11
E pmRA 1.43 E pmDE 0.81 Hpmag 7.6029 E Hpmag 0.0016
SHp 0.011 VA 0 BV 0.144 E BV 0.015
VI 0.16
CCDM
Ccdm 18177-1940 RComp Comp A Note1
Note2 Discov num DRAs -1.80 DDEs -18.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp B2 PmNote *
PmRA 33 PmDE 10 Dm number -19 4953 Cat1 BD
Name2 161273 Cat2 SAO HD 167815 M HD
ADS BDS A11228 M ADS BDS N IDS IDS 18117S1942A
HIC 89647
 
 
18177-1940 B
 
 
Coord arcsec 2000 181739.98-194019.9 Coord calc 181740.01-194020.1 Mag 8.7 Mag composta 8.27
Spectral class B1/B2III (blue-white) PmRA 2.00 PmDE -2.0 Calc delta mag 0.3
 
 
18177-1940 Bb
 
 
Coord arcsec 2000 181739.98-194019.9 Mag 9.6 Calc delta mag 1.2 Calc coord yes