stampa
Login

About to create a great list of doubles? Share it with other users!
Create your account here


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
19581-4808
HDS 2842
HD 188581


Nearby doubles
46' : 19564-4850
BRT1103

49' : 19572-4856
TOI1060

56' : 20014-4724
I 256

58' : 19529-4744
TDT1823

76' : 20052-4834
HDS2864

77' : 20043-4724
I 661

90' : 20018-4647
UC 4067

98' : 20008-4634
RST1054

106' : 19520-4642
TDT1811

106' : 20060-4659
DAW 26AB

107' : 19590-4622
HJ 5157

111' : 19596-4958
CPO9292

114' : 20062-4649
HJ 5166

114' : 19467-4821
HJ 5142

119' : 20010-4614
HJ 5160

120' : 20091-4856
RST1060

124' : 20026-5003
HDS2857

124' : 19488-4931
HDS2818

128' : 19538-5009
HDS2835

129' : 19453-4804
UC 4018

129' : 20109-4806
UC 4114

131' : 19539-5012
RST1050

131' : 19484-4937
BRT1100

136' : 20100-4914
KPP1803

138' : 19454-4904
NSN 479

139' : 20022-4556
HDS2854



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.

19581-4808 HDS 2842 (HD 188581)

 
 
19h 58m 04.28s -48° 08' 01.2" P.A. 76.00 sep 0.3 mag 8.61,10.78 Sp G0V dist. 53.79 pc (175.46 l.y.)
 
 
Coord 2000 19581-4808 Discov num HDS2842 Comp Coord arcsec 2000 19 58 04.28 -48 08 01.2
Date first 1991 Date last 2021 Obs 14
Pa first 92 Pa last 76.4 P.A. Now (θ) 76.4°
Sep first 0.3 Sep last 0.253 Sep. Now (ρ) 0.253"
Mag pri 8.61 Mag sec 10.78 delta mag (ΔM) 2.17 Spectral class G0V (yellow)
Pri motion ra +052 Sec motion ra
Pri motion dec +016 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 188581 Constellation Telescopium SAO 229955 HIP 98274
Tycho2 8395-00655-1 Gaia DR2 6670759761800880768 HD 188581 CD CD-4813359
CP CP-4810294 Distance 53.79 Distance ly 175.46
 
 
ORBITAL ELEMENTS
 
 
Period (P)35.28y± 2.48 Periastron (T)2016.036y± 0.065 Semi-major axis (a)0.2364a± 0.014
Eccentricity (e)0.738± 0.037 Inclination (i)70.2°± 2.2 Longitude of periastron (ω)60.6°± 4.1
Node (Ω)254.2°± 2.4 Notes ReferenceTok2016e
Equinox2000 Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 109.3 0.217
2001 112.2 0.204
2002 115.6 0.191
2003 119.5 0.177
2004 124.0 0.163
2005 129.4 0.149
2006 135.9 0.135
2007 143.9 0.122
2008 153.6 0.110
2009 165.3 0.101
2010 178.8 0.096
2011 193.3 0.094
2012 207.8 0.096
2013 221.4 0.099
2014 234.4 0.101
2015 248.4 0.089
2016 281.7 0.038
2017 55.3 0.067
2018 69.6 0.132
2019 75.1 0.176
2020 78.6 0.209
2021 81.3 0.232
2022 83.5 0.249
2023 85.5 0.262
2024 87.3 0.270
2025 89.1 0.275
2026 90.8 0.278
2027 92.5 0.278
2028 94.2 0.276
2029 95.9 0.273
2030 97.7 0.267


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


 
  


wds19581-4808b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19581-4808 HDS 2842 (HD 188581) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2016e orb - Tokovinin, A. 2016AJ....152..138T
Tok2016e AJ 152, 138, 2016
 
 
DISCOVERER
 
 
idgroup discov author
1 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
19581-4808 HDS2842 1991 1 92 0.3 8.61 10.78 G0V 195804.28-480801.2
19581-4808 HDS2842 2009 3 168 0.1 8.61 10.78 G0V 195804.28-480801.2
19581-4808 HDS2842 2014 6 254 0.1 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2015 9 268 0.1 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2017 10 63 0.1 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2018 11 65 0.1 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2019 12 70 0.2 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2020 13 75 0.2 8.61 10.78 G0V O 195804.28-480801.2
19581-4808 HDS2842 2021 14 76 0.3 8.61 10.78 G0V O 195804.28-480801.2

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

 
 
WDS 19581-4808 HDS 2842 (HD 188581) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19581-4808 HDS 2842 (HD 188581) : MEASURES
 
 
No records found.

 
 
WDS 19581-4808 (HD 188581) : VIRTUAL EYEPIECE
 
 

19581-4808 HDS2842A mag 8.61 Sp G0V 19581-4808 HDS2842B sep 0.2 P.A. 70.10 mag 10.78 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 19581-4808 (HD 188581) : ALADIN DSS IMAGE @ 19h 58m 04.28s -48° 08' 01.2"
 
 
 
 
WDS 19581-4808 HDS 2842 (HD 188581) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19581-4808 HDS2842 distance=0' 19564-4850 BRT1103 distance=46' 19572-4856 TOI1060 distance=49' 20014-4724 I 256 distance=56' 19529-4744 TDT1823 distance=58' 20052-4834 HDS2864 distance=76' 20043-4724 I 661 distance=77' 20018-4647 UC 4067 distance=90' 20008-4634 RST1054 distance=98' 19520-4642 TDT1811 distance=106' 20060-4659 DAW 26BC distance=106' 20060-4659 DAW 26AB distance=106' 20060-4659 DAW 26AC distance=106' 19590-4622 HJ 5157 distance=107' 19596-4958 CPO9292 distance=111' 20062-4649 HJ 5166 distance=114' 19467-4821 HJ 5142 distance=114' 20010-4614 HJ 5160 distance=119' 20091-4856 RST1060 distance=120' 20026-5003 HDS2857 distance=124' 19488-4931 HDS2818 distance=124' 19538-5009 HDS2835 distance=128' 19453-4804 UC 4018 distance=129' 20109-4806 UC 4114 distance=129' 19539-5012 RST1050 distance=131' 19484-4937 BRT1100 distance=131' 20100-4914 KPP1803 distance=136' 19454-4904 NSN 479 distance=138' 20022-4556 HDS2854 distance=139' 19510-5008 LDS 687 distance=140' 20023-4554 I 660 distance=141' 20093-4643 SIN 114 distance=143' 19478-4629 HJ 5143 distance=144' 20095-4641 HJ 5169 distance=145' 19587-5034 B 983 distance=147' 19567-4537 TDT1867 distance=152' 20107-4644 I 123 distance=153' 20041-4547 CPO 87 distance=153' 20119-4704 HJ 5172 distance=154' 20086-4618 CPO 88AB distance=154' 20086-4618 UC 4098AC distance=154' 20086-4618 UC 4100BD distance=155' 19537-5038 TSN 32 distance=156' 20039-4543 DAM 629 distance=158' 19502-4552 RST1048 distance=159' 20139-4812 TDT2107 distance=159' 19537-4531 BRT1102 distance=164' 19495-4545 UC 4030 distance=169' 20053-5043 UC 4079 distance=171' 20106-4612 RSS 542 distance=173' 19590-5106 I 1407 distance=178' 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 19581-4808 HDS2842 76 0.3
Show 19564-4850 BRT1103 206 4.4 46
Show 19572-4856 TOI1060 167 0.3 49
Show 20014-4724 I 256 189 0.8 56
Show 19529-4744 TDT1823 80 0.7 58
Show 20052-4834 HDS2864 339 0.2 76
Show 20043-4724 I 661 39 0.6 77
Show 20018-4647 UC 4067 339 13.5 90
Show 20008-4634 RST1054 2 0.3 98
Show 19520-4642 TDT1811 103 2.0 106
Show 20060-4659 DAW 26 BC 310 3.2 106
Show 20060-4659 DAW 26 AB 189 4.3 106
Show 20060-4659 DAW 26 AC 235 3.8 106
Show 19590-4622 HJ 5157 280 17.5 107
Show 19596-4958 CPO9292 300 4.3 111
Show 20062-4649 HJ 5166 249 11.3 114
Show 19467-4821 HJ 5142 258 13.9 114
Show 20010-4614 HJ 5160 164 26.7 119
Show 20091-4856 RST1060 151 0.2 120
Show 20026-5003 HDS2857 6 18.0 124
Show 19488-4931 HDS2818 74 0.2 124
Show 19538-5009 HDS2835 23 0.2 128
Show 19453-4804 UC 4018 201 31.2 129
Show 20109-4806 UC 4114 8 13.9 129
Show 19539-5012 RST1050 214 0.5 131
Show 19484-4937 BRT1100 326 2.5 131
Show 20100-4914 KPP1803 353 14.0 136
Show 19454-4904 NSN 479 224 49.5 138
Show 20022-4556 HDS2854 327 0.1 139
Show 19510-5008 LDS 687 44 81.2 140
Show 20023-4554 I 660 277 1.8 141
Show 20093-4643 SIN 114 110 59.8 143
Show 19478-4629 HJ 5143 315 5.4 144
Show 20095-4641 HJ 5169 128 6.0 145
Show 19587-5034 B 983 330 1.2 147
Show 19567-4537 TDT1867 229 0.6 152
Show 20107-4644 I 123 210 6.3 153
Show 20041-4547 CPO 87 5 28.0 153
Show 20119-4704 HJ 5172 9 36.7 154
Show 20086-4618 CPO 88 AB 101 57.4 154
Show 20086-4618 UC 4098 AC 216 23.3 154
Show 20086-4618 UC 4100 BD 359 48.2 155
Show 19537-5038 TSN 32 189 82.4 156
Show 20039-4543 DAM 629 238 10.5 158
Show 19502-4552 RST1048 12 0.8 159
Show 20139-4812 TDT2107 242 0.6 159
Show 19537-4531 BRT1102 218 5.0 164
Show 19495-4545 UC 4030 295 40.3 169
Show 20053-5043 UC 4079 78 11.2 171
Show 20106-4612 RSS 542 311 21.9 173
Show 19590-5106 I 1407 119 5.7 178

 
 
WDS 19581-4808 : COMPONENTS
 
 
  A
B pa=70.1°
sep=0.17"
 
 
19581-4808 A
 
 
Componente originario normalizzato AB Name HD 188581 Coord arcsec 2000 195804.28-480801.2 Mag 8.61
Spectral class G0V (yellow) PmRA 52.00 PmDE 16.0 SAO 229955
HIP 98274 Tycho2 8395-00655-1 HD 188581 CD CD-4813359
CP CP-4810294
Tycho2
Tycho2 8395-00655-1 Pflag RAmdeg 299.51799318 DEmdeg -48.13362917
PmRA 44.3 PmDE 16.4 E RAmdeg 6 E DEmdeg 8
E pmRA 1.0 E pmDE 1.1 EpRAm 1990.82 EpDEm 1990.20
Num 9 Q RAmdeg 1.3 Q DEmdeg 1.2 Q pmRA 1.4
Q pmDE 1.3 BTmag 9.124 E BTmag 0.017 VTmag 8.411
E VTmag 0.013 Prox 999 TYC T HIP 98274
CCDM AB RAdeg 299.51784028 DEdeg -48.13366750 EpRA 1990 1.74
EpDE 1990 1.54 E RAdeg 5.9 E DEdeg 7.6 Posflg P
Corr 0.0
SAO
SAO 229955 DelFlag RA1950 PmRA1950 0.0061
DE1950 PmDE1950 0.006 Vmag 8.5 SpType F8
Double code Source 48 CatNum 18501 DM CP-4810294
DMcomp BDsup HD 188581 M HD 0
GC RA1950rad 5.21162705 DE1950rad -0.84245777 PmRA2000 0.006
PmDE2000 0.003
Hipparcos
Catalog H HIP 98274 Proxy H RAhms 19 58 04.28
DEdms -48 08 01.2 Vmag 8.35 VarFlag R Vmag H
RAdeg 299.518 DEdeg -48.1337 AstroRef * Plx 21.52
CCDM 19581-4808 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 92 Rho 0.278 HD 188581 BD
CD CD-4813359 CP CP-4810294 Dm number -4813359 VIred 0.68
SpType G0V R SpType Coord arcsec 2000 195804.28-480801.2
Hipparcos 2
HIP 98274 Sn 55 So 3 Nc 2
RArad 5.2275723643 DErad -0.8400909981 Plx 18.59 PmRA 51.46
PmDE 17 E RArad 1.16 E DErad 0.51 E Plx 1.23
E pmRA 1.8 E pmDE 1.16 Hpmag 8.4757 E Hpmag 0.0016
SHp 0.013 VA 0 BV 0.614 E BV 0.014
VI 0.68
CCDM
Ccdm 19581-4808 RComp Comp A Note1
Note2 Discov num DRAs -1.68 DDEs -1.1
R dRAs 82 Year Theta Rho
Obs 2 Vmag 8.6 Sp G0 PmNote *
PmRA 52 PmDE 16 Dm number -4813359 Cat1 CD
Name2 229955 Cat2 SAO HD 188581 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98274
 
 
19581-4808 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 195804.30-480801.1 Mag 10.78 Calc delta mag 2.17
Calc coord yes
CCDM
Ccdm 19581-4808 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.65 DDEs -1.1
R dRAs 82 Year 1991 Theta 92 Rho 0.3
Obs 1 Vmag 10.8 Sp PmNote *
PmRA 52 PmDE 16 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 98274