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Doubles in session


Current system
21181-2931
LDS 738 AB


Nearby doubles
34' : 21205-2920
LDS5921

43' : 21149-2921
HDS3022

44' : 21212-2914
FIN 6

47' : 21146-2935
B 2492

50' : 21192-3018
RST2176AB

54' : 21140-2940
MET 91

56' : 21140-2914
RST2173

57' : 21169-2836
DAW 154

60' : 21154-2842
LDS4874

62' : 21146-2849
LDS4872

63' : 21194-2831
B 523

65' : 21218-3014
UC 4457

78' : 21131-2850
BRT3096

88' : 21145-3045
RSS 556

92' : 21161-2802
LDS5920

92' : 21209-3054
HJ 5263

96' : 21157-2803
BRT3099

97' : 21150-3059
RSS 557

98' : 21111-2858
HU 85

101' : 21121-3035
BU 251

107' : 21166-2746
BRT3100

108' : 21231-2806
HDS3047

111' : 21251-2831
LDS5923

115' : 21094-2928
B 517

115' : 21111-3041
HJ 5248

115' : 21212-2744
HDS3040



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.

21181-2931 LDS 738 AB

 
 
21h 18m 05.11s -29° 30' 47.0" P.A. 182.00 sep 27.4 mag 8.30,12.60 Sp G5V dist. 44.96 pc (146.66 l.y.)
 
 
Coord 2000 21181-2931 Discov num LDS 738 Comp AB Coord arcsec 2000 21 18 05.11 -29 30 47.0
Date first 1920 Date last 2016 Obs 8
Pa first 180 Pa last 181.8 P.A. Now (θ) 181.8°
Sep first 27.0 Sep last 27.35 Sep. Now (ρ) 27.35"
Mag pri 8.30 Mag sec 12.60 delta mag (ΔM) 4.3 Spectral class G5V (yellow)
Pri motion ra +056 Sec motion ra +067
Pri motion dec -130 Sec motion dec -045
Notes N Z W (See Notes, Parallax indicates components are physical, )
rPM=0.606
This double is physical.
 
 
21181-2931 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 190207 21 18 05 -29 30 47 LDS 738 Aa,Ab 2016 2 101 4.8 8.30 15.70 7.40
Show 190207 21 18 05 -29 30 47 LDS 738 AB 2016 8 182 27.4 8.30 12.60 4.30 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Microscopium SAO 190207 HIP 105156 Tycho2 6949-00566-1
HD 202648 CD CD-3018503 Distance 44.96 Distance ly 146.66
 
 
WDS 21181-2931 LDS 738 AB : NOTES
 
 
discov_num notes refcode
LDS 738 A is PMS star and X-ray source. Tok2014d
 
 
REFERENCES
 
 
refcode metd author reference
Tok2014d E2 - Tokovinin, A. 2014AJ....147...86T
Tok2014d AJ 147, 86, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 LDS Luyten p.m. catalog (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
21181-2931 LDS 738 AB 2015 6 180 27.5 8.55 12.70 G5V N 211805.11-293047.0
21181-2931 LDS 738 AB 2016 8 182 27.4 8.30 12.60 G5V NZW 211805.11-293047.0

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

 
 
WDS 21181-2931 LDS 738 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21181-2931 LDS 738 AB : MEASURES
 
 
No records found.

 
 
WDS 21181-2931 : VIRTUAL EYEPIECE
 
 

21181-2931 LDS 738A mag 8.3 Sp G5V 21181-2931 LDS 738Ab sep 4.2 P.A. 102.80 mag 15.7 21181-2931 LDS 738B sep 27.4 P.A. 181.60 mag 12.6 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 21181-2931 : ALADIN DSS IMAGE @ 21h 18m 05.11s -29° 30' 47.0"
 
 
 
 
WDS 21181-2931 LDS 738 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21181-2931 LDS 738AB distance=0' 21205-2920 LDS5921 distance=34' 21149-2921 HDS3022 distance=43' 21212-2914 FIN 6 distance=44' 21146-2935 B 2492 distance=47' 21192-3018 RST2176AB distance=50' 21192-3018 WIS 348AC distance=50' 21140-2940 MET 91 distance=54' 21140-2914 RST2173 distance=56' 21169-2836 DAW 154 distance=57' 21154-2842 LDS4874 distance=60' 21146-2849 LDS4872 distance=62' 21194-2831 B 523 distance=63' 21218-3014 UC 4457 distance=65' 21131-2850 BRT3096 distance=78' 21145-3045 RSS 556 distance=88' 21161-2802 LDS5920 distance=92' 21209-3054 HJ 5263 distance=92' 21157-2803 BRT3099 distance=96' 21150-3059 RSS 557 distance=97' 21111-2858 HU 85 distance=98' 21121-3035 BU 251 distance=101' 21166-2746 BRT3100 distance=107' 21231-2806 HDS3047 distance=108' 21251-2831 LDS5923 distance=111' 21094-2928 B 517 distance=115' 21111-3041 HJ 5248 distance=115' 21212-2744 HDS3040 distance=115' 21254-3037 HJ 3025 distance=116' 21266-2839 TDT2970 distance=124' 21137-3121 BRT3097AB distance=124' 21247-3106 HJ 5266 distance=129' 21210-2725 UC 4451 distance=132' 21090-2829 DAW 153 distance=135' 21200-2718 BU 252 distance=136' 21214-3140 UC 4455 distance=137' 21178-2714 STN 54 distance=138' 21136-2725 LDS5919 distance=138' 21121-2735 HJ 3012 distance=140' 21288-2955 RST2178 distance=142' 21076-3011 RST2172AB distance=143' 21076-3011 SKF1252AB,C distance=143' 21265-3111 TOK 372 distance=149' 21291-3011 RST2179 distance=150' 21064-3002 JSP 822 distance=155' 21229-2705 I 1441 distance=160' 21162-2651 RST2175 distance=162' 21212-3212 NSN 492 distance=167' 21140-2650 RST2174 distance=170' 21191-3221 SKF2098 distance=172' 21105-2711 BRG 32 distance=172' 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 21181-2931 LDS 738 AB 182 27.4
Show 21181-2931 LDS 738 Aa,Ab 101 4.8
Show 21205-2920 LDS5921 91 313.7 34
Show 21149-2921 HDS3022 18 0.4 43
Show 21212-2914 FIN 6 209 1.2 44
Show 21146-2935 B 2492 7.2 47
Show 21192-3018 RST2176 AB 246 0.8 50
Show 21192-3018 WIS 348 AC 239 171.8 50
Show 21140-2940 MET 91 161 1.9 54
Show 21140-2914 RST2173 11 1.3 56
Show 21169-2836 DAW 154 88 1.1 57
Show 21154-2842 LDS4874 34 22.5 60
Show 21146-2849 LDS4872 276 62.7 62
Show 21194-2831 B 523 212 0.8 63
Show 21218-3014 UC 4457 240 34.7 65
Show 21131-2850 BRT3096 93 4.3 78
Show 21145-3045 RSS 556 24 11.8 88
Show 21161-2802 LDS5920 15 52.4 92
Show 21209-3054 HJ 5263 93 27.9 92
Show 21157-2803 BRT3099 298 4.4 96
Show 21150-3059 RSS 557 339 55.4 97
Show 21111-2858 HU 85 141 2.9 98
Show 21121-3035 BU 251 232 1.8 101
Show 21166-2746 BRT3100 168 7.1 107
Show 21231-2806 HDS3047 103 0.1 108
Show 21251-2831 LDS5923 208 33.3 111
Show 21094-2928 B 517 129 4.2 115
Show 21111-3041 HJ 5248 319 5.3 115
Show 21212-2744 HDS3040 65 0.3 115
Show 21254-3037 HJ 3025 282 32.4 116
Show 21266-2839 TDT2970 278 0.6 124
Show 21137-3121 BRT3097 AB 124 3.4 124
Show 21247-3106 HJ 5266 256 10.7 129
Show 21210-2725 UC 4451 203 24.7 132
Show 21090-2829 DAW 153 279 3.6 135
Show 21200-2718 BU 252 88 2.1 136
Show 21214-3140 UC 4455 283 11.4 137
Show 21178-2714 STN 54 238 7.1 138
Show 21136-2725 LDS5919 214 219.6 138
Show 21121-2735 HJ 3012 320 25.8 140
Show 21288-2955 RST2178 229 2.6 142
Show 21076-3011 RST2172 AB 310 0.8 143
Show 21076-3011 SKF1252 AB,C 288 17.6 143
Show 21265-3111 TOK 372 138 0.1 149
Show 21291-3011 RST2179 344 2.2 150
Show 21064-3002 JSP 822 74 0.5 155
Show 21229-2705 I 1441 159 1.8 160
Show 21162-2651 RST2175 329 1.9 162
Show 21212-3212 NSN 492 320 9.3 167
Show 21140-2650 RST2174 11 0.6 170
Show 21191-3221 SKF2098 27 100.8 172

 
 
WDS 21181-2931 : COMPONENTS
 
 
  A Ab
Ab pa=102.8°
sep=4.24"
 
B pa=181.6°
sep=27.35"
pa=190.5°
sep=26.84"
 
 
21181-2931 A
 
 
Coord arcsec 2000 211805.11-293047.0 Mag 8.3 Spectral class G5V (yellow) PmRA 56.00
PmDE -130.0 SAO 190207 HIP 105156 Tycho2 6949-00566-1
HD 202648 CD CD-3018503
Tycho2
Tycho2 6949-00566-1 Pflag RAmdeg 319.52147135 DEmdeg -29.51338215
PmRA 54.3 PmDE -136.5 E RAmdeg 8 E DEmdeg 11
E pmRA 1.8 E pmDE 1.9 EpRAm 1991.63 EpDEm 1991.54
Num 8 Q RAmdeg 0.8 Q DEmdeg 0.6 Q pmRA 0.8
Q pmDE 0.6 BTmag 9.300 E BTmag 0.021 VTmag 8.551
E VTmag 0.015 Prox 999 TYC T HIP 105156
CCDM RAdeg 319.52133278 DEdeg -29.51307972 EpRA 1990 1.99
EpDE 1990 2.02 E RAdeg 7.6 E DEdeg 10.6 Posflg
Corr -0.1
SAO
SAO 190207 DelFlag RA1950 PmRA1950 0.0039
DE1950 PmDE1950 -0.152 Vmag 8.1 SpType G5
Double code Source 24 CatNum 13996 DM CD-3018503
DMcomp BDsup HD 202648 M HD 0
GC RA1950rad 5.56369471 DE1950rad -0.51875058 PmRA2000 0.0039
PmDE2000 -0.155
Hipparcos
Catalog H HIP 105156 Proxy RAhms 21 18 05.11
DEdms -29 30 47.0 Vmag 8.47 VarFlag R Vmag H
RAdeg 319.521 DEdeg -29.5131 AstroRef Plx 21.09
CCDM 21181-2931 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 202648 BD
CD CD-3018503 CP Dm number -3018503 VIred 0.76
SpType G5V R SpType Coord arcsec 2000 211805.11-293047.0
Hipparcos 2
HIP 105156 Sn 5 So 0 Nc 1
RArad 5.5766988943 DErad -0.5150999107 Plx 22.24 PmRA 55.06
PmDE -136.29 E RArad 1.14 E DErad 0.66 E Plx 1.12
E pmRA 1.14 E pmDE 0.5 Hpmag 8.608 E Hpmag 0.0023
SHp 0.016 VA 0 BV 0.667 E BV 0.021
VI 0.73
CCDM
Ccdm 21181-2931 RComp Comp A Note1
Note2 Discov num DRAs -0.87 DDEs 11.6
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp G5 PmNote *
PmRA 51 PmDE -152 Dm number -3018503 Cat1 CD
Name2 190207 Cat2 SAO HD 202648 M HD
ADS BDS M ADS BDS N IDS IDS 21121S2956A
HIC 105156
 
 
21181-2931 Ab
 
 
Coord arcsec 2000 211805.43-293047.9 Mag 15.7 PmRA 58.00 PmDE -139.0
Calc delta mag 7.4 Calc coord yes
 
 
21181-2931 B
 
 
Coord arcsec 2000 211805.05-293114.3 Mag 12.6 PmRA 67.00 PmDE -45.0
Calc delta mag 4.3 Calc coord yes
CCDM
Ccdm 21181-2931 RComp Comp B Note1
Note2 Discov num LDS 738 DRAs -0.85 DDEs -16.3
R dRAs 66 Year Theta S Rho 27.0
Obs Vmag 12.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21121S2956B
HIC