stampa
Login

Create your personal custom set of columns with all data you need.
Register here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
20045-4457
HDS 2862
HD 189951


Nearby doubles
19' : 20052-4440
KPP 864

46' : 20071-4533
UC 4089

47' : 20039-4543
DAM 629

48' : 20014-4422
HJ 5161

49' : 20090-4452
B 986

52' : 20041-4547
CPO 87

61' : 20097-4522
RSS 35AB

62' : 20023-4554
I 660

65' : 20022-4556
HDS2854

66' : 20058-4353
TDT1970

68' : 20009-4402
UC 4063

73' : 20110-4519
BRT1105

85' : 20010-4614
HJ 5160

92' : 19567-4537
TDT1867

93' : 20086-4618
CPO 88AB

99' : 20106-4612
RSS 542

104' : 19590-4622
HJ 5157

104' : 20135-4539
UC 4123

105' : 20008-4634
RST1054

106' : 20063-4313
I 662

110' : 19592-4324
SKF1161

113' : 20062-4649
HJ 5166

114' : 20018-4647
UC 4067

117' : 20095-4641
HJ 5169

118' : 20093-4643
SIN 114

118' : 19537-4531
BRT1102



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.

20045-4457 HDS 2862 (HD 189951)

 
 
20h 04m 29.77s -44° 56' 48.8" P.A. 3.00 sep 0.4 mag 8.48,8.87 Sp A9IV dist. 190.48 pc (621.35 l.y.)
 
 
Coord 2000 20045-4457 Discov num HDS2862 Comp Coord arcsec 2000 20 04 29.77 -44 56 48.8
Date first 1991 Date last 2014 Obs 3
Pa first 1 Pa last 2.9 P.A. Now (θ) 2.9°
Sep first 0.3 Sep last 0.394 Sep. Now (ρ) 0.394"
Mag pri 8.48 Mag sec 8.87 delta mag (ΔM) 0.39 Spectral class A9IV (white)
Pri motion ra +017 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189951 Constellation Sagittarius SAO 230024 HIP 98859
Tycho2 7959-00925-1 HD 189951 CD CD-4513590 CP CP-45 9859
Distance 190.48 Distance ly 621.35
 
 
WDS 20045-4457 HDS 2862 (HD 189951) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HDS Hipparcos Double Star (from additional DD list) ...................
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20045-4457 HDS2862 1991 1 1 0.3 8.48 8.87 A9IV 200429.77-445648.8
20045-4457 HDS2862 2008 2 2 0.4 8.48 8.87 A9IV 200429.77-445648.8
20045-4457 HDS2862 2014 3 3 0.4 8.48 8.87 A9IV 200429.77-445648.8

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

 
 
WDS 20045-4457 HDS 2862 (HD 189951) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20045-4457 HDS 2862 (HD 189951) : MEASURES
 
 
No records found.

 
 
WDS 20045-4457 (HD 189951) : VIRTUAL EYEPIECE
 
 

20045-4457 HDS2862A mag 8.48 Sp A9IV 20045-4457 HDS2862B sep 0.4 P.A. 2.10 mag 8.87 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 20045-4457 (HD 189951) : ALADIN DSS IMAGE @ 20h 04m 29.77s -44° 56' 48.8"
 
 
 
 
WDS 20045-4457 HDS 2862 (HD 189951) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20045-4457 HDS2862 distance=0' 20052-4440 KPP 864 distance=19' 20071-4533 UC 4089 distance=46' 20039-4543 DAM 629 distance=47' 20014-4422 HJ 5161 distance=48' 20090-4452 B 986 distance=49' 20041-4547 CPO 87 distance=52' 20097-4522 RSS 35AB distance=61' 20097-4522 SKF1162BC distance=62' 20023-4554 I 660 distance=62' 20022-4556 HDS2854 distance=65' 20058-4353 TDT1970 distance=66' 20009-4402 UC 4063 distance=68' 20110-4519 BRT1105 distance=73' 20010-4614 HJ 5160 distance=85' 19567-4537 TDT1867 distance=92' 20086-4618 CPO 88AB distance=93' 20086-4618 UC 4098AC distance=93' 20086-4618 UC 4100BD distance=93' 20106-4612 RSS 542 distance=99' 19590-4622 HJ 5157 distance=104' 20135-4539 UC 4123 distance=104' 20008-4634 RST1054 distance=105' 20063-4313 I 662 distance=106' 19592-4324 SKF1161 distance=110' 20062-4649 HJ 5166 distance=113' 20018-4647 UC 4067 distance=114' 20095-4641 HJ 5169 distance=117' 20093-4643 SIN 114 distance=118' 19537-4531 BRT1102 distance=118' 19554-4344 DON 972 distance=122' 20033-4255 I 1490 distance=123' 20149-4403 SKF1164 distance=124' 20060-4659 DAW 26AB distance=124' 20060-4659 DAW 26AC distance=124' 20060-4659 DAW 26BC distance=124' 20071-4256 DON 979 distance=125' 20107-4644 I 123 distance=126' 20152-4603 HJ 5179 distance=131' 20166-4554 I 125 distance=140' 20151-4332 KPP1654 distance=143' 19546-4322 UC 4051 distance=143' 20043-4724 I 661 distance=147' 19507-4454 DON 970 distance=148' 20119-4704 HJ 5172 distance=149' 20183-4532 BRT1107 distance=151' 20014-4724 I 256 distance=151' 20177-4557 HJ 5184 distance=152' 19502-4523 HJ 5148 distance=154' 19502-4552 RST1048 distance=161' 20048-4215 B 984 distance=162' 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 20045-4457 HDS2862 3 0.4
Show 20052-4440 KPP 864 188 7.3 19
Show 20071-4533 UC 4089 300 14.1 46
Show 20039-4543 DAM 629 238 10.5 47
Show 20014-4422 HJ 5161 314 11.3 48
Show 20090-4452 B 986 105 2.1 49
Show 20041-4547 CPO 87 5 28.0 52
Show 20097-4522 RSS 35 AB 127 47.5 61
Show 20097-4522 SKF1162 BC 44 37.6 62
Show 20023-4554 I 660 277 1.8 62
Show 20022-4556 HDS2854 327 0.1 65
Show 20058-4353 TDT1970 276 0.5 66
Show 20009-4402 UC 4063 255 30.3 68
Show 20110-4519 BRT1105 55 2.8 73
Show 20010-4614 HJ 5160 164 26.7 85
Show 19567-4537 TDT1867 229 0.6 92
Show 20086-4618 CPO 88 AB 101 57.4 93
Show 20086-4618 UC 4098 AC 216 23.3 93
Show 20086-4618 UC 4100 BD 359 48.2 93
Show 20106-4612 RSS 542 311 21.9 99
Show 19590-4622 HJ 5157 280 17.5 104
Show 20135-4539 UC 4123 130 22.9 104
Show 20008-4634 RST1054 2 0.3 105
Show 20063-4313 I 662 290 1.9 106
Show 19592-4324 SKF1161 308 16.4 110
Show 20062-4649 HJ 5166 249 11.3 113
Show 20018-4647 UC 4067 339 13.5 114
Show 20095-4641 HJ 5169 128 6.0 117
Show 20093-4643 SIN 114 110 59.8 118
Show 19537-4531 BRT1102 218 5.0 118
Show 19554-4344 DON 972 84 0.2 122
Show 20033-4255 I 1490 152 0.9 123
Show 20149-4403 SKF1164 209 66.7 124
Show 20060-4659 DAW 26 AB 189 4.3 124
Show 20060-4659 DAW 26 AC 235 3.8 124
Show 20060-4659 DAW 26 BC 310 3.2 124
Show 20071-4256 DON 979 258 0.9 125
Show 20107-4644 I 123 210 6.3 126
Show 20152-4603 HJ 5179 136 5.8 131
Show 20166-4554 I 125 45 1.5 140
Show 20151-4332 KPP1654 179 12.7 143
Show 19546-4322 UC 4051 174 23.1 143
Show 20043-4724 I 661 39 0.6 147
Show 19507-4454 DON 970 199 2.3 148
Show 20119-4704 HJ 5172 9 36.7 149
Show 20183-4532 BRT1107 317 5.2 151
Show 20014-4724 I 256 189 0.8 151
Show 20177-4557 HJ 5184 285 12.3 152
Show 19502-4523 HJ 5148 318 13.9 154
Show 19502-4552 RST1048 12 0.8 161
Show 20048-4215 B 984 32 2.4 162

 
 
WDS 20045-4457 : COMPONENTS
 
 
  A
B pa=2.1°
sep=0.39"
 
 
20045-4457 A
 
 
Componente originario normalizzato AB Name HD 189951 Coord arcsec 2000 200429.77-445648.8 Mag 8.48
Spectral class A9IV (white) PmRA 17.00 PmDE -9.0 SAO 230024
HIP 98859 Tycho2 7959-00925-1 HD 189951 CD CD-4513590
CP CP-45 9859
Tycho2
Tycho2 7959-00925-1 Pflag RAmdeg 301.12411836 DEmdeg -44.94692333
PmRA 22.4 PmDE -8.0 E RAmdeg 4 E DEmdeg 6
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.61 EpDEm 1991.22
Num 8 Q RAmdeg 1.0 Q DEmdeg 0.5 Q pmRA 1.1
Q pmDE 0.5 BTmag 8.201 E BTmag 0.016 VTmag 7.870
E VTmag 0.011 Prox 999 TYC T HIP 98859
CCDM AB RAdeg 301.12404556 DEdeg -44.94690444 EpRA 1990 1.71
EpDE 1990 1.46 E RAdeg 4.4 E DEdeg 5.5 Posflg P
Corr 0.0
SAO
SAO 230024 DelFlag RA1950 PmRA1950 0.0014
DE1950 PmDE1950 0.002 Vmag 7.8 SpType A5
Double code Source 48 CatNum 18582 DM CP-45 9859
DMcomp BDsup HD 189951 M HD 0
GC RA1950rad 5.2402308 DE1950rad -0.7869485 PmRA2000 0.0014
PmDE2000 -0.001
Hipparcos
Catalog H HIP 98859 Proxy H RAhms 20 04 29.77
DEdms -44 56 48.8 Vmag 7.83 VarFlag R Vmag G
RAdeg 301.124 DEdeg -44.9469 AstroRef * Plx 5.18
CCDM 20045-4457 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 1 Rho 0.296 HD 189951 BD
CD CD-4513590 CP CP-45 9859 Dm number -4513590 VIred 0.34
SpType A9IV R SpType Coord arcsec 2000 200429.77-445648.8
Hipparcos 2
HIP 98859 Sn 55 So 3 Nc 2
RArad 5.2556059692 DErad -0.7844714372 Plx 5.25 PmRA 16.66
PmDE -8.26 E RArad 0.85 E DErad 0.51 E Plx 0.89
E pmRA 1.41 E pmDE 0.95 Hpmag 7.9026 E Hpmag 0.0015
SHp 0.013 VA 0 BV 0.294 E BV 0.006
VI 0.34
CCDM
Ccdm 20045-4457 RComp Comp A Note1
Note2 Discov num DRAs -0.21 DDEs 11.0
R dRAs 82 Year Theta Rho
Obs 2 Vmag 8.5 Sp A9 PmNote *
PmRA 17 PmDE -9 Dm number -4513590 Cat1 CD
Name2 230024 Cat2 SAO HD 189951 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98859
 
 
20045-4457 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200429.77-445648.4 Mag 8.87 Calc delta mag 0.39
Calc coord yes
CCDM
Ccdm 20045-4457 RComp Comp B Note1
Note2 Discov num HDS DRAs -0.21 DDEs 11.3
R dRAs 82 Year 1991 Theta 1 Rho 0.3
Obs 1 Vmag 8.9 Sp PmNote *
PmRA 17 PmDE -9 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98859