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Doubles in session


Current system
20002-5522
B 459 BC


Nearby doubles
15' : 20001-5508
B 458

30' : 19598-5552
KPP 449

33' : 20040-5525
TDT1947

37' : 19560-5521
RST1052

37' : 19562-5509
I 1040

40' : 20014-5601
B 460

47' : 19548-5517
TDT1844

49' : 20055-5504
UC 4082

50' : 19598-5433
TDT1906

53' : 20043-5603
UC 4075

55' : 20002-5617
B 457

62' : 20070-5501
UC 4088

64' : 19544-5603
B 453

70' : 19526-5458
DUN 227

74' : 19573-5414
I 659

77' : 20068-5615
I 1412

78' : 20094-5526
UC 4108

79' : 20091-5544
TDT2027

79' : 19535-5430
RST3241

81' : 20043-5635
LDS 699

82' : 20089-5559
TDT2021AB

84' : 19562-5406
HJ 5447

89' : 19501-5505
KPP 922

90' : 20044-5400
B 462

91' : 19496-5525
I 658

93' : 19585-5352
TDT1891



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.

20002-5522 B 459 BC

 
 
20h 00m 14.72s -55° 22' 25.0" P.A. 223.00 sep 0.3 mag 10.98,11.07 Sp K1+K1 dist. 68.78 pc (224.36 l.y.)
 
 
Coord 2000 20002-5522 Discov num B   459 Comp BC Coord arcsec 2000 20 00 14.72 -55 22 25.0
Date first 1926 Date last 2021 Obs 16
Pa first 129 Pa last 222.8 P.A. Now (θ) 221.9°
Sep first 0.3 Sep last 0.271 Sep. Now (ρ) 0.302"
Mag pri 10.98 Mag sec 11.07 delta mag (ΔM) 0.09 Spectral class K1+K1 (yellow-orange/yellow-orange)
Pri motion ra -014 Sec motion ra -014
Pri motion dec +002 Sec motion dec +002
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20002-5522 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 188908 246378 20 00 15 -55 22 25 I 1041 A,BC 2021 20 45 1.4 9.69 10.20 0.51
Show 20 00 15 -55 22 25 B 459 BC 2021 16 223 0.3 10.98 11.07 0.09 Y <===
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Telescopium HIP 98457 Tycho2 8780-00272-1 Gaia DR2 6449050801202399104
HD 188908 CP CP-55 9275 Distance 68.78 Distance ly 224.36
 
 
ORBITAL ELEMENTS
 
 
Period (P)72.78y± 1.2 Periastron (T)2044.56y± 0.5 Semi-major axis (a)0.292a± 0.002
Eccentricity (e)0.229± 0.005 Inclination (i)44.9°± 2 Longitude of periastron (ω)278.7°± 3
Node (Ω)64.6°± 1 Notesn ReferenceDoc2016i
Equinox2000 Last observation2015 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 130.1 0.258
2001 134.5 0.256
2002 139.0 0.254
2003 143.5 0.253
2004 148.0 0.253
2005 152.6 0.253
2006 157.1 0.254
2007 161.6 0.255
2008 166.0 0.257
2009 170.4 0.259
2010 174.7 0.262
2011 178.9 0.265
2012 183.0 0.268
2013 187.0 0.272
2014 190.9 0.275
2015 194.7 0.279
2016 198.3 0.283
2017 201.9 0.287
2018 205.4 0.290
2019 208.8 0.294
2020 212.2 0.296
2021 215.5 0.299
2022 218.7 0.301
2023 221.9 0.302
2024 225.1 0.303
2025 228.2 0.302
2026 231.4 0.301
2027 234.7 0.299
2028 238.0 0.296
2029 241.3 0.292
2030 244.8 0.286


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


 
  


wds20002-5522b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20002-5522 B 459 BC : NOTES
 
 
discov_num notes refcode
I 1041 BC: Rapid direct motion.
B 459 BC: Gomez et al. (2016) derive dynamical parallax and component
masses: 15.36 +/- 0.24 mas, 0.655 +/- 0.005 Msun, 0.643 +/- 0.005 Msun Doc2016i
 
 
REFERENCES
 
 
refcode metd author reference
Doc2016i orb - Gomez, J., Docobo, J.A., Campo, P., & Mendez, R.A. 2016AJ....152..216G
Doc2016i AJ 152, 216, 2016
 
 
DISCOVERER
 
 
idgroup discov author
1 B van den Bos, W.H.
212 I Innes, R.T.A.
216 I MNRAS 57, 533, 1897 (data also in I__1897b,
216 I I__1897c)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20002-5522 B 459 BC 1991 13 95 0.3 10.98 11.07 O 200014.72-552225.0
20002-5522 B 459 BC 2015 14 197 0.3 10.98 11.07 K1IV NO 200014.72-552225.0
20002-5522 B 459 BC 2017 15 204 0.3 10.98 11.07 K1+K1 NO 200014.72-552225.0
20002-5522 B 459 BC 2021 16 223 0.3 10.98 11.07 K1+K1 NO 200014.72-552225.0

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

 
 
WDS 20002-5522 B 459 BC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20002-5522 B 459 BC : MEASURES
 
 
No records found.

 
 
WDS 20002-5522 : VIRTUAL EYEPIECE
 
 

20002-5522 I 1041A mag 9.69 Sp K1IV/V 20002-5522 B 459B sep 0.3 P.A. 195.90 mag 10.98 Sp K1 20002-5522 B 459C sep 0.5 P.A. 200.80 mag 11.07 Sp K1 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 20002-5522 : ALADIN DSS IMAGE @ 20h 00m 14.72s -55° 22' 25.0"
 
 
 
 
WDS 20002-5522 B 459 BC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20002-5522 B 459BC distance=0' 20002-5522 I 1041A,BC distance=1' 20001-5508 B 458 distance=15' 19598-5552 KPP 449 distance=30' 20040-5525 TDT1947 distance=33' 19560-5521 RST1052 distance=37' 19562-5509 I 1040 distance=37' 20014-5601 B 460 distance=40' 19548-5517 TDT1844 distance=47' 20055-5504 UC 4082 distance=49' 19598-5433 TDT1906 distance=50' 20043-5603 UC 4075 distance=53' 20002-5617 B 457 distance=55' 20070-5501 UC 4088 distance=62' 19544-5603 B 453 distance=64' 19526-5458 DUN 227 distance=70' 19573-5414 I 659 distance=74' 20068-5615 I 1412 distance=77' 20094-5526 UC 4108 distance=78' 20091-5544 TDT2027 distance=79' 19535-5430 RST3241 distance=79' 20043-5635 LDS 699 distance=81' 20089-5559 TDT2021AB distance=82' 20089-5559 RST4052AC distance=82' 19562-5406 HJ 5447 distance=84' 19501-5505 KPP 922 distance=89' 20044-5400 B 462 distance=90' 19496-5525 I 658 distance=91' 19585-5352 TDT1891 distance=93' 19550-5359 LDS 692 distance=94' 19488-5539 B 447 distance=99' 20113-5613 I 1414 distance=106' 20080-5400 UC 4094 distance=107' 19473-5539 TDT1750 distance=112' 19472-5513 HDS2813 distance=113' 19480-5622 TOK 335 distance=119' 20022-5324 UC 4070 distance=120' 20067-5711 LDS 701 distance=121' 19524-5705 RST1049 distance=122' 20014-5725 LDS 696 distance=123' 20075-5337 UC 4091 distance=124' 19584-5725 DAW 25 distance=124' 19506-5340 HJ 5146 distance=133' 19504-5339 DAW 24 distance=134' 20146-5431 YMG 91 distance=134' 19444-5540 KPP 714 distance=136' 19504-5715 B 449 distance=140' 19468-5357 RST3236 distance=145' 19475-5344 RST3238 distance=148' 19563-5258 KPP3104BC distance=149' 19428-5529 HJ 5135 distance=149' 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 20002-5522 B 459 BC 223 0.3
Show 20002-5522 I 1041 A,BC 45 1.4 1
Show 20001-5508 B 458 81 0.6 15
Show 19598-5552 KPP 449 77 5.0 30
Show 20040-5525 TDT1947 273 1.6 33
Show 19560-5521 RST1052 262 1.4 37
Show 19562-5509 I 1040 202 1.9 37
Show 20014-5601 B 460 54 0.5 40
Show 19548-5517 TDT1844 341 0.7 47
Show 20055-5504 UC 4082 122 25.4 49
Show 19598-5433 TDT1906 256 0.4 50
Show 20043-5603 UC 4075 170 12.4 53
Show 20002-5617 B 457 283 4.8 55
Show 20070-5501 UC 4088 273 33.4 62
Show 19544-5603 B 453 345 0.4 64
Show 19526-5458 DUN 227 148 23.0 70
Show 19573-5414 I 659 152 1.1 74
Show 20068-5615 I 1412 127 6.8 77
Show 20094-5526 UC 4108 337 19.7 78
Show 20091-5544 TDT2027 190 1.0 79
Show 19535-5430 RST3241 106 2.7 79
Show 20043-5635 LDS 699 304 8.1 81
Show 20089-5559 TDT2021 AB 236 0.5 82
Show 20089-5559 RST4052 AC 55 1.5 82
Show 19562-5406 HJ 5447 266 11.3 84
Show 19501-5505 KPP 922 128 7.6 89
Show 20044-5400 B 462 23 1.8 90
Show 19496-5525 I 658 131 1.2 91
Show 19585-5352 TDT1891 206 2.1 93
Show 19550-5359 LDS 692 67 25.2 94
Show 19488-5539 B 447 251 3.6 99
Show 20113-5613 I 1414 125 0.8 106
Show 20080-5400 UC 4094 341 32.4 107
Show 19473-5539 TDT1750 300 2.0 112
Show 19472-5513 HDS2813 142 0.7 113
Show 19480-5622 TOK 335 333 102.0 119
Show 20022-5324 UC 4070 345 43.6 120
Show 20067-5711 LDS 701 333 78.9 121
Show 19524-5705 RST1049 328 0.9 122
Show 20014-5725 LDS 696 116 31.6 123
Show 20075-5337 UC 4091 356 19.4 124
Show 19584-5725 DAW 25 220 3.2 124
Show 19506-5340 HJ 5146 284 8.3 133
Show 19504-5339 DAW 24 180 5.3 134
Show 20146-5431 YMG 91 47 0.6 134
Show 19444-5540 KPP 714 228 6.3 136
Show 19504-5715 B 449 91 1.0 140
Show 19468-5357 RST3236 272 0.5 145
Show 19475-5344 RST3238 145 0.6 148
Show 19563-5258 KPP3104 BC 126 4.9 149
Show 19428-5529 HJ 5135 176 12.4 149

 
 
WDS 20002-5522 : COMPONENTS
 
 
  A B
B pa=195.9°
sep=0.31"
 
C pa=200.8°
sep=0.53"
pa=207.8°
sep=0.22"
 
 
20002-5522 A
 
 
Name HD 188908 Coord arcsec 2000 200014.73-552224.7 Mag 9.69 Spectral class K1IV/V (yellow-orange)
PmRA -14.00 PmDE 2.0 SAO 246378 HIP 98457
Tycho2 8780-00272-1 HD 188908 CP CP-55 9275
Tycho2
Tycho2 8780-00272-1 Pflag P RAmdeg 300.06139888 DEmdeg -55.37355040
PmRA -14.4 PmDE 1.8 E RAmdeg 14 E DEmdeg 16
E pmRA 3.3 E pmDE 2.9 EpRAm 1991.62 EpDEm 1991.36
Num 3 Q RAmdeg 2.6 Q DEmdeg 0.9 Q pmRA 2.7
Q pmDE 0.9 BTmag 10.526 E BTmag 0.030 VTmag 9.689
E VTmag 0.021 Prox 12 TYC T HIP 98457
CCDM A RAdeg 300.06140278 DEdeg -55.37362028 EpRA 1990 1.80
EpDE 1990 1.66 E RAdeg 13.8 E DEdeg 15.6 Posflg D
Corr -0.1
SAO
SAO 246378 DelFlag RA1950 PmRA1950 0.0015
DE1950 PmDE1950 -0.001 Vmag 9 SpType K0
Double code Source 42 CatNum 7869 DM CP-55 9275
DMcomp BDsup HD 188908 M HD 0
GC RA1950rad 5.21974902 DE1950rad -0.96884927 PmRA2000 0.001
PmDE2000 -0.004
Hipparcos
Catalog H HIP 98457 Proxy H RAhms 20 00 14.74
DEdms -55 22 25.0 Vmag 9.07 VarFlag R Vmag H
RAdeg 300.061 DEdeg -55.3736 AstroRef A Plx 12.3
CCDM 20002-5522 N CCDM I Nsys 1 Ncomp 3
MultFlag C Source Qual C M HIP
Theta Rho HD 188908 BD
CD CP CP-55 9275 Dm number -55 9275 VIred 0.84
SpType K1IV/V R SpType Coord arcsec 2000 200014.74-552225.0
Hipparcos 2
HIP 98457 Sn 15 So 3 Nc 3
RArad 5.237059456 DErad -0.9664518364 Plx 14.54 PmRA -13.12
PmDE -1.22 E RArad 0.95 E DErad 0.67 E Plx 1.29
E pmRA 1.51 E pmDE 1.15 Hpmag 9.2254 E Hpmag 0.0016
SHp 0.022 VA 0 BV 1 E BV 0.495
VI 0.84
CCDM
Ccdm 20002-5522 RComp Comp A Note1
Note2 Discov num DRAs 2.94 DDEs -25.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 9.4 Sp K0 PmNote *
PmRA 13 PmDE -1 Dm number -55 9275 Cat1 CPD
Name2 246378 Cat2 SAO HD 188908 M HD
ADS BDS M ADS BDS N IDS IDS 19523S5539A
HIC 98457
 
 
20002-5522 B
 
 
Coord arcsec 2000 200014.72-552225.0 Mag 10.98 Spectral class K1 (yellow-orange) PmRA -14.00
PmDE 2.0 Calc delta mag 1.29
CCDM
Ccdm 20002-5522 RComp Comp B Note1
Note2 Discov num I 1041 DRAs DDEs
R dRAs Year 1959 Theta 008 Rho 1.1
Obs 6 Vmag 11.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 19523S5539B
HIC 98457
 
 
20002-5522 C
 
 
Coord arcsec 2000 200014.71-552225.2 Mag 11.07 Spectral class K1 (yellow-orange) PmRA -14.00
PmDE 2.0 Calc delta mag 1.38 Calc coord yes
CCDM
Ccdm 20002-5522 RComp B Comp C Note1
Note2 Discov num B 459 DRAs DDEs
R dRAs Year 1938 Theta 178 Rho 0.3
Obs 10 Vmag 11.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 19523S5539C
HIC 98457