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Doubles in session


Current system
19098-1948
B 427
HD 178555


Nearby doubles
23' : 19111-2002
DON 952

27' : 19116-1955
A 2266

31' : 19106-2017
ARA1169

32' : 19087-2016
ARA1168

32' : 19076-1950
DYL 47

36' : 19090-1915
B 2470

38' : 19083-1917
OCC9187

41' : 19070-1959
HJ 2853

43' : 19126-2002
B 429

45' : 19120-1916
ARA 768

47' : 19118-1911
B 2474

49' : 19065-1937
DYL 46

50' : 19090-1901
ARA 767

50' : 19105-1859
TDS 974

55' : 19060-1955
DYL 43AB

56' : 19137-1941
KPP 979

58' : 19082-1855
B 1890

62' : 19141-1938
ARA 769

67' : 19131-2036
ARA1170

67' : 19063-1904
DYL 45AB

69' : 19090-1841
ARY 117

70' : 19137-2030
ARA1171

74' : 19098-2101
FIN 311AB
Albaldah

74' : 19050-1919
DYL 41

74' : 19050-2018
BRT1546

75' : 19071-1844
HDS2710



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19098-1948 B 427 (HD 178555)

 
 
19h 09m 48.13s -19° 48' 12.4" P.A. 183.00 sep 0.1 mag 7.00,7.10 Sp K2IV dist. 118.48 pc (386.48 l.y.)
 
 
Coord 2000 19098-1948 Discov num B   427 Comp Coord arcsec 2000 19 09 48.13 -19 48 12.4
Date first 1925 Date last 2007 Obs 19
Pa first 276 Pa last 182.9 P.A. Now (θ) 182.9°
Sep first 0.1 Sep last 0.05 Sep. Now (ρ) 0.05"
Mag pri 7.00 Mag sec 7.10 delta mag (ΔM) 0.1 Spectral class K2IV (yellow-orange)
Pri motion ra +028 Sec motion ra
Pri motion dec -084 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 178555 Constellation Sagittarius SAO 162260 HIP 94144
Tycho2 6291-01794-1 Gaia DR2 4083941366486236288 HD 178555 HR 7265
GC 26389 ADS 12096 BD BD-20 5415 Distance 118.48
Distance ly 386.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)2.68y Periastron (T)1931.81y Semi-major axis (a)0.129a
Eccentricity (e)0.53 Inclination (i)45.6° Longitude of periastron (ω)86.1°
Node (Ω)45° Notesn ReferenceVor1934
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 299.1 0.140
2001 13.8 0.120
2002 251.2 0.127
2003 321.3 0.137
2004 54.9 0.079
2005 274.7 0.139
2006 344.6 0.133
2007 204.5 0.072
2008 296.4 0.140
2009 10.2 0.123
2010 247.8 0.124
2011 318.5 0.137
2012 47.2 0.087
2013 271.9 0.138
2014 341.6 0.134
2015 192.4 0.061
2016 293.7 0.140
2017 6.8 0.125
2018 244.2 0.120
2019 315.7 0.138
2020 40.8 0.094
2021 269.2 0.137
2022 338.6 0.134
2023 175.3 0.051
2024 291.0 0.140
2025 3.4 0.126
2026 240.4 0.116
2027 312.9 0.138
2028 35.2 0.101
2029 266.3 0.136
2030 335.7 0.135


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds19098-1948a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19098-1948 B 427 (HD 178555) : NOTES
 
 
discov_num notes refcode
B 427 A premature orbit has been computed. Voronov orbit rejected from Vor1934
Fourth Orbit Catalog ("probably not double") Wor1983
Additional notes may be found in Wilson (1951). WRH1951
 
 
REFERENCES
 
 
refcode metd author reference
Vor1934 orb - Voronov, N. 1934TsTas..27.....V
Vor1934 Tashkent Astr. Obs. Circ. #27, 1934
Wor1983 - Worley, C.E. & Heintz, W.D. 1983PUSNO..24g...1W
Wor1983 Pub. USNO 24, Pt. 7, 1983 (Fourth Orbit Catalog)
WRH1951 J j Wilson, R.H. 1951AJ.....56...69W
WRH1951 +Ma AJ 56, 69, 1951
WRH1951 (U and T coded observations per van den Bos, J Obs 34, 85, 1951) 1951JO.....34...85V
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19098-1948 B 427 1989 18 250 0.1 7.00 7.10 K2IV NO 190948.13-194812.4
19098-1948 B 427 2007 19 183 0.1 7.00 7.10 K2IV NO 190948.13-194812.4

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 19098-1948 B 427 (HD 178555) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19098-1948 B 427 (HD 178555) : MEASURES
 
 
No records found.

 
 
WDS 19098-1948 (HD 178555) : VIRTUAL EYEPIECE
 
 

19098-1948 B 427A mag 7 Sp K2IV 19098-1948 B 427B mag 7.1 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 19098-1948 (HD 178555) : ALADIN DSS IMAGE @ 19h 09m 48.13s -19° 48' 12.4"
 
 
 
 
WDS 19098-1948 B 427 (HD 178555) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19098-1948 B 427 distance=0' 19111-2002 DON 952 distance=23' 19116-1955 A 2266 distance=27' 19106-2017 ARA1169 distance=31' 19087-2016 ARA1168 distance=32' 19076-1950 DYL 47 distance=32' 19090-1915 B 2470 distance=36' 19083-1917 OCC9187 distance=38' 19070-1959 HJ 2853 distance=41' 19126-2002 B 429 distance=43' 19120-1916 ARA 768 distance=45' 19118-1911 B 2474 distance=47' 19065-1937 DYL 46 distance=49' 19090-1901 ARA 767 distance=50' 19105-1859 TDS 974 distance=50' 19060-1955 DYL 43AB distance=55' 19060-1955 DYL 43AC distance=55' 19137-1941 KPP 979 distance=56' 19082-1855 B 1890 distance=58' 19141-1938 ARA 769 distance=62' 19131-2036 ARA1170 distance=67' 19063-1904 DYL 45AB distance=67' 19063-1904 DYL 45AC distance=67' 19090-1841 ARY 117 distance=69' 19137-2030 ARA1171 distance=70' 19098-2101 FIN 311AB (Albaldah) distance=74' 19098-2101 FIN 311AB,C distance=74' 19050-1919 DYL 41 distance=74' 19050-2018 BRT1546 distance=74' 19071-1844 HDS2710 distance=75' 19060-1851 DYL 44 distance=79' 19144-2032 DON 954 distance=79' 19042-1949 DYL 40AB distance=80' 19156-1955 ARA1175 distance=82' 19055-1855 DYL 42 distance=82' 19155-2004 ARA1173 distance=82' 19031-1914 EGB 7 distance=82' 19143-2041 ARA1172 distance=83' 19039-1933 DYL 36 distance=85' 19061-2056 J 1840 distance=86' 19155-2022 ARA1174 distance=88' 19157-1918 ARA 770 distance=89' 19049-2046 ARA1166 distance=90' 19040-1911 DYL 39BC distance=90' 19040-1911 DYL 39AB distance=90' 19104-2118 ARA1564 distance=91' 19040-1907 DYL 37AB distance=93' 19040-1907 DYL 37BC distance=93' 19040-1900 DYL 38 distance=96' 19031-1928 A 2264AB distance=98' 19031-1928 A 2264AC distance=98' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 19098-1948 B 427 183 0.1
Show 19111-2002 DON 952 122 0.9 23
Show 19116-1955 A 2266 314 2.4 27
Show 19106-2017 ARA1169 197 7.8 31
Show 19087-2016 ARA1168 334 7.7 32
Show 19076-1950 DYL 47 50 9.1 32
Show 19090-1915 B 2470 282 0.9 36
Show 19083-1917 OCC9187 -1 0.1 38
Show 19070-1959 HJ 2853 85 14.7 41
Show 19126-2002 B 429 221 0.1 43
Show 19120-1916 ARA 768 271 14.4 45
Show 19118-1911 B 2474 27 6.6 47
Show 19065-1937 DYL 46 107 4.4 49
Show 19090-1901 ARA 767 87 13.4 50
Show 19105-1859 TDS 974 112 0.8 50
Show 19060-1955 DYL 43 AB 186 12.8 55
Show 19060-1955 DYL 43 AC 32 10.9 55
Show 19137-1941 KPP 979 267 8.0 56
Show 19082-1855 B 1890 306 2.8 58
Show 19141-1938 ARA 769 287 11.3 62
Show 19131-2036 ARA1170 187 13.9 67
Show 19063-1904 DYL 45 AB 82 5.3 67
Show 19063-1904 DYL 45 AC 268 5.9 67
Show 19090-1841 ARY 117 181 26.8 69
Show 19137-2030 ARA1171 76 11.2 70
Show Albaldah 19098-2101 FIN 311 AB 179 0.1 74
Show 19098-2101 FIN 311 AB,C 136 0.3 74
Show 19050-1919 DYL 41 61 7.3 74
Show 19050-2018 BRT1546 264 3.7 74
Show 19071-1844 HDS2710 108 0.7 75
Show 19060-1851 DYL 44 104 7.2 79
Show 19144-2032 DON 954 321 0.9 79
Show 19042-1949 DYL 40 AB 175 4.6 80
Show 19156-1955 ARA1175 15 12.5 82
Show 19055-1855 DYL 42 133 12.4 82
Show 19155-2004 ARA1173 215 5.4 82
Show 19031-1914 EGB 7 249 16.0 82
Show 19143-2041 ARA1172 51 12.9 83
Show 19039-1933 DYL 36 86 4.7 85
Show 19061-2056 J 1840 116 10.2 86
Show 19155-2022 ARA1174 340 7.4 88
Show 19157-1918 ARA 770 122 5.1 89
Show 19049-2046 ARA1166 20 10.6 90
Show 19040-1911 DYL 39 BC 320 4.2 90
Show 19040-1911 DYL 39 AB 24 7.7 90
Show 19104-2118 ARA1564 146 15.1 91
Show 19040-1907 DYL 37 AB 237 11.4 93
Show 19040-1907 DYL 37 BC 220 3.9 93
Show 19040-1900 DYL 38 138 4.2 96
Show 19031-1928 A 2264 AB 87 3.6 98
Show 19031-1928 A 2264 AC 28 14.4 98

 
 
WDS 19098-1948 : COMPONENTS
 
 
  A
B pa=182.7°
sep=0.05"
 
 
19098-1948 A
 
 
Componente originario normalizzato AB Name HD 178555 Coord arcsec 2000 190948.13-194812.4 Mag 7
Spectral class K2IV (yellow-orange) PmRA 28.00 PmDE -84.0 SAO 162260
HIP 94144 Tycho2 6291-01794-1 HD 178555 HR 7265
GC 26389 BD BD-20 5415
Tycho2
Tycho2 6291-01794-1 Pflag RAmdeg 287.45061517 DEmdeg -19.80366453
PmRA 24.0 PmDE -86.0 E RAmdeg 4 E DEmdeg 4
E pmRA 0.8 E pmDE 0.8 EpRAm 1991.33 EpDEm 1991.26
Num 22 Q RAmdeg 1.2 Q DEmdeg 1.0 Q pmRA 1.4
Q pmDE 1.1 BTmag 7.615 E BTmag 0.015 VTmag 6.240
E VTmag 0.010 Prox 999 TYC T HIP 94144
CCDM RAdeg 287.45055750 DEdeg -19.80346694 EpRA 1990 1.82
EpDE 1990 1.72 E RAdeg 3.5 E DEdeg 4.3 Posflg
Corr 0.1
SAO
SAO 162260 DelFlag RA1950 PmRA1950 0.0013
DE1950 PmDE1950 -0.079 Vmag 6.3 SpType K0
Double code Source 70 CatNum 26389 DM BD-20 5415
DMcomp BDsup HD 178555 M HD 0
GC 26389 RA1950rad 5.00409256 DE1950rad -0.3470452 PmRA2000 0.0014
PmDE2000 -0.079
Hipparcos
Catalog H HIP 94144 Proxy RAhms 19 09 48.13
DEdms -19 48 12.4 Vmag 6.11 VarFlag R Vmag H
RAdeg 287.451 DEdeg -19.8035 AstroRef Plx 8.32
CCDM 19098-1948 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 178555 BD BD-20 5415
CD CP Dm number -20 5415 VIred 1.12
SpType K1III R SpType Coord arcsec 2000 190948.13-194812.4
Hipparcos 2
HIP 94144 Sn 5 So 0 Nc 1
RArad 5.0169585466 DErad -0.3456355082 Plx 8.44 PmRA 22.36
PmDE -82.88 E RArad 0.43 E DErad 0.26 E Plx 0.45
E pmRA 0.61 E pmDE 0.35 Hpmag 6.275 E Hpmag 0.0008
SHp 0.007 VA 0 BV 1.156 E BV 0.002
VI 1.12
CCDM
Ccdm 19098-1948 RComp Comp A Note1
Note2 Discov num DRAs 0.11 DDEs -12.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.0 Sp K0 PmNote *
PmRA 20 PmDE -78 Dm number -20 5415 Cat1 BD
Name2 162260 Cat2 SAO HD 178555 M HD
ADS BDS A12096 M ADS BDS N IDS IDS 19039S1958A
HIC 94144
 
 
19098-1948 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 190948.13-194812.4 Mag 7.1 Calc delta mag 0.1
Calc coord yes
CCDM
Ccdm 19098-1948 RComp Comp B Note1 *
Note2 Discov num B 427 DRAs DDEs
R dRAs Year 1953 Theta 008 Rho 0.1
Obs 10 Vmag 7.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12096 M ADS BDS N IDS IDS 19039S1958B
HIC 94144