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Doubles in session


Current system
03201-2851
LDS 93
HD 20781


Nearby doubles
29' : 03179-2855
RST1255

37' : 03195-2815
UC 981

38' : 03214-2924
I 1145

44' : 03187-2931
DAW 78

55' : 03160-2845
TDS2507

64' : 03163-2811
RST 64

71' : 03180-2746
TDS 110

78' : 03249-2806
LDS5424

81' : 03184-2734
BVD 33

83' : 03199-3014
I 719

87' : 03226-3011
LDS3487

90' : 03252-2951
HDS 427

90' : 03267-2834
SEE 25

98' : 03240-3014
TDS2538

100' : 03140-2950
SKF1201

104' : 03227-2714
HDS 422

106' : 03121-2859
HJ 3555
Dalim

106' : 03121-2907
LDS5416

109' : 03246-3021
TDS2541

113' : 03248-2722
LDS 839

116' : 03113-2841
LDS5415

119' : 03126-3000
SKF1827

124' : 03124-3004
TDS2478

126' : 03243-2659
RST 72

127' : 03276-3011
TDS2552

127' : 03129-3003
LDS 90



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.

03201-2851 LDS 93 (HD 20781)

 
 
03h 20m 03.58s -28° 51' 14.7" P.A. 358.00 sep 253.0 mag 7.44,8.54 Sp G1.5V+G9V dist. 35.37 pc (115.38 l.y.)
 
 
Coord 2000 03201-2851 Discov num LDS  93 Comp Coord arcsec 2000 03 20 03.58 -28 51 14.7
Date first 1880 Date last 2016 Obs 24
Pa first 358 Pa last 358.1 P.A. Now (θ) 358.1°
Sep first 253.4 Sep last 252.987 Sep. Now (ρ) 252.987"
Mag pri 7.44 Mag sec 8.54 delta mag (ΔM) 1.1 Spectral class G1.5V+G9V (yellow/yellow)
Pri motion ra +349 Sec motion ra +345
Pri motion dec -066 Sec motion dec -066
Notes N T (See Notes, Parallax indicates physical)
rPM=0.011 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 20781 Constellation Fornax SAO 168469 HIP 15526
Tycho2 6445-00136-1 HD 20781 CD CD-29 1229 CP CP-29 381
Distance 35.37 Distance ly 115.38
 
 
WDS 03201-2851 LDS 93 (HD 20781) : NOTES
 
 
discov_num notes refcode
LDS 93 van den Bergh reports a third star at 38@, 105.6". Bgh1958
A is exoplanet host, P=592d. B = HIP 15526 hosts exoplanets with
P=29.1d, 85.1d. Tok2014d
B is CD-29@1229.
NLTT 10636/10635 Chm2004
SHY 157. Bayesian analysis by Shaya & Olling (2011) indicates very Shy2011
high (near 100%) probability pair is physical.
 
 
REFERENCES
 
 
refcode metd author reference
Bgh1958 Pa - Bergh, S. van den .
Bgh1958 Cont. Perkins Obs. Ser.2, #10,186, 1958
Bgh1958 (date approximate; date range 1939-1954)
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
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
03201-2851 LDS 93 2000 10 358 253.0 7.44 8.54 G3V NZD 032003.58-285114.7
03201-2851 LDS 93 2010 19 358 253.0 7.44 8.54 G3V NZ V 032003.58-285114.7
03201-2851 LDS 93 2015 21 358 253.0 7.44 8.54 G3V NZWV 032003.58-285114.7
03201-2851 LDS 93 2016 23 358 253.0 7.44 8.54 G1.5V+G9V NT 032003.58-285114.7

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

 
 
WDS 03201-2851 LDS 93 (HD 20781) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 03201-2851 LDS 93 (HD 20781) : MEASURES
 
 
No records found.

 
 
WDS 03201-2851 (HD 20781) : VIRTUAL EYEPIECE
 
 

03201-2851 LDS 93A mag 7.44 Sp G1.5V 03201-2851 LDS 93B sep 252.9 P.A. 358.30 mag 8.54 Sp G9V 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 03201-2851 (HD 20781) : ALADIN DSS IMAGE @ 03h 20m 03.58s -28° 51' 14.7"
 
 
 
 
WDS 03201-2851 LDS 93 (HD 20781) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

03201-2851 LDS 93 distance=0' 03179-2855 RST1255 distance=29' 03195-2815 UC 981 distance=37' 03214-2924 I 1145 distance=38' 03187-2931 DAW 78 distance=44' 03160-2845 TDS2507 distance=55' 03163-2811 RST 64 distance=64' 03180-2746 TDS 110 distance=71' 03249-2806 LDS5424 distance=78' 03184-2734 BVD 33 distance=81' 03199-3014 I 719 distance=83' 03226-3011 LDS3487 distance=87' 03252-2951 HDS 427 distance=90' 03267-2834 SEE 25 distance=90' 03240-3014 TDS2538 distance=98' 03140-2950 SKF1201 distance=100' 03227-2714 HDS 422 distance=104' 03121-2859 HJ 3555 (Dalim) distance=106' 03121-2907 LDS5416 distance=106' 03246-3021 TDS2541 distance=109' 03248-2722 LDS 839 distance=113' 03113-2841 LDS5415 distance=116' 03126-3000 SKF1827 distance=119' 03124-3004 TDS2478 distance=124' 03243-2659 RST 72 distance=126' 03276-3011 TDS2552 distance=127' 03129-3003 LDS 90 distance=127' 03195-3100 TSN 126 distance=129' 03262-3037 B 2082 distance=133' 03123-2727 LDS 88 distance=133' 03300-2922 RST 75 distance=135' 03119-3017 SEE 22 distance=137' 03200-3109 B 48 distance=139' 03211-2632 SWR 5 distance=141' 03116-2719 FAR 52 distance=146' 03309-2926 HDS 442 distance=147' 03289-2723 LDS9154 distance=149' 03263-3057 LDS5426 distance=150' 03307-2755 B 2083 distance=151' 03196-2618 KPP2454 distance=154' 03212-2619 B 2561 distance=154' 03219-2617 B 2562 distance=157' 03094-3004 LDS3460 distance=158' 03114-3043 TDS2471 distance=159' 03311-2959 TDS2560 distance=160' 03211-2610 HDS 419 distance=162' 03079-2813 LDS 86AB distance=165' 03079-2813 HDS3408AC distance=165' 03326-2910 TDS2572AB distance=166' 03240-2613 HJ 3572 distance=167' 03171-3133 LDS3471 distance=167' 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 03201-2851 LDS 93 358 253.0
Show 03179-2855 RST1255 28 2.4 29
Show 03195-2815 UC 981 248 20.2 37
Show 03214-2924 I 1145 67 1.6 38
Show 03187-2931 DAW 78 320 0.0 44
Show 03160-2845 TDS2507 80 0.9 55
Show 03163-2811 RST 64 242 3.9 64
Show 03180-2746 TDS 110 108 1.0 71
Show 03249-2806 LDS5424 211 21.2 78
Show 03184-2734 BVD 33 301 24.6 81
Show 03199-3014 I 719 325 1.5 83
Show 03226-3011 LDS3487 253 25.0 87
Show 03252-2951 HDS 427 137 0.3 90
Show 03267-2834 SEE 25 18 10.3 90
Show 03240-3014 TDS2538 0.5 98
Show 03140-2950 SKF1201 169 31.3 100
Show 03227-2714 HDS 422 228 0.2 104
Show Dalim 03121-2859 HJ 3555 301 5.4 106
Show 03121-2907 LDS5416 208 251.5 106
Show 03246-3021 TDS2541 1 0.4 109
Show 03248-2722 LDS 839 201 7.5 113
Show 03113-2841 LDS5415 119 89.1 116
Show 03126-3000 SKF1827 6 3.0 119
Show 03124-3004 TDS2478 215 0.9 124
Show 03243-2659 RST 72 60 1.1 126
Show 03276-3011 TDS2552 180 1.0 127
Show 03129-3003 LDS 90 225 13.0 127
Show 03195-3100 TSN 126 130 0.6 129
Show 03262-3037 B 2082 194 30.2 133
Show 03123-2727 LDS 88 57 12.5 133
Show 03300-2922 RST 75 61 1.7 135
Show 03119-3017 SEE 22 335 1.4 137
Show 03200-3109 B 48 85 2.1 139
Show 03211-2632 SWR 5 276 7.0 141
Show 03116-2719 FAR 52 18 0.1 146
Show 03309-2926 HDS 442 4 0.7 147
Show 03289-2723 LDS9154 226 6.3 149
Show 03263-3057 LDS5426 36 32.0 150
Show 03307-2755 B 2083 17 12.0 151
Show 03196-2618 KPP2454 133 21.7 154
Show 03212-2619 B 2561 142 5.9 154
Show 03219-2617 B 2562 252 13.7 157
Show 03094-3004 LDS3460 68 10.6 158
Show 03114-3043 TDS2471 167 0.5 159
Show 03311-2959 TDS2560 162 0.4 160
Show 03211-2610 HDS 419 250 0.2 162
Show 03079-2813 LDS 86 AB 208 66.6 165
Show 03079-2813 HDS3408 AC 96 37.4 165
Show 03326-2910 TDS2572 AB 340 0.5 166
Show 03240-2613 HJ 3572 95 20.7 167
Show 03171-3133 LDS3471 49 14.3 167

 
 
WDS 03201-2851 : COMPONENTS
 
 
  A
B pa=358.3°
sep=252.95"
 
 
03201-2851 A
 
 
Componente originario normalizzato AB Name HD 20782 Coord arcsec 2000 032003.58-285114.7 Mag 7.44
Spectral class G1.5V (yellow) PmRA 349.00 PmDE -66.0 SAO 168469
HIP 15527 Tycho2 6445-00136-1 HD 20782 CD CD-29 1231
CP CP-29 382
Tycho2
Tycho2 6445-00136-1 Pflag RAmdeg 50.01490869 DEmdeg -28.85407307
PmRA 348.9 PmDE -65.8 E RAmdeg 4 E DEmdeg 4
E pmRA 1.6 E pmDE 1.3 EpRAm 1991.48 EpDEm 1991.37
Num 11 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.8
Q pmDE 0.9 BTmag 8.139 E BTmag 0.015 VTmag 7.439
E VTmag 0.010 Prox 999 TYC T HIP 15527
CCDM RAdeg 50.01397917 DEdeg -28.85392000 EpRA 1990 1.60
EpDE 1990 1.62 E RAdeg 4.1 E DEdeg 4.0 Posflg
Corr 0.2
SAO
SAO 168469 DelFlag RA1950 PmRA1950 0.0268
DE1950 PmDE1950 -0.039 Vmag 7.5 SpType G0
Double code Source 24 CatNum 1284 DM CD-29 1231
DMcomp BDsup HD 20782 M HD 0
GC RA1950rad 0.86369844 DE1950rad -0.50672075 PmRA2000 0.027
PmDE2000 -0.043
Hipparcos
Catalog H HIP 15527 Proxy RAhms 03 20 03.35
DEdms -28 51 14.1 Vmag 7.36 VarFlag R Vmag H
RAdeg 50.0139 DEdeg -28.8539 AstroRef Plx 27.76
CCDM 03201-2850 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 20782 BD
CD CD-29 1231 CP CP-29 382 Dm number -29 1231 VIred 0.7
SpType G3V R SpType Coord arcsec 2000 032003.35-285114.1
Hipparcos 2
HIP 15527 Sn 5 So 0 Nc 1
RArad 0.8729078992 DErad -0.5035957911 Plx 28.15 PmRA 349.33
PmDE -65.92 E RArad 0.34 E DErad 0.46 E Plx 0.62
E pmRA 0.37 E pmDE 0.56 Hpmag 7.4962 E Hpmag 0.0009
SHp 0.012 VA 0 BV 0.63 E BV 0.006
VI 0.7
 
 
03201-2851 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 032003.02-284701.9 Mag 8.54 Spectral class G9V (yellow)
PmRA 345.00 PmDE -66.0 SAO 168468 HIP 15526
Tycho2 6445-00983-1 HD 20781 CD CD-29 1229 CP CP-29 381
Calc delta mag 1.1 Calc coord yes
Tycho2
Tycho2 6445-00983-1 Pflag RAmdeg 50.01225907 DEmdeg -28.78383190
PmRA 348.4 PmDE -67.1 E RAmdeg 6 E DEmdeg 7
E pmRA 2.3 E pmDE 2.1 EpRAm 1991.53 EpDEm 1991.42
Num 6 Q RAmdeg 0.8 Q DEmdeg 1.4 Q pmRA 0.8
Q pmDE 1.4 BTmag 9.463 E BTmag 0.017 VTmag 8.535
E VTmag 0.012 Prox 999 TYC T HIP 15526
CCDM RAdeg 50.01133306 DEdeg -28.78367472 EpRA 1990 1.61
EpDE 1990 1.57 E RAdeg 6.4 E DEdeg 6.7 Posflg
Corr 0.2
SAO
SAO 168468 DelFlag RA1950 PmRA1950 0.0272
DE1950 PmDE1950 -0.097 Vmag 8.3 SpType G0
Double code Source 24 CatNum 1283 DM CD-29 1229
DMcomp BDsup HD 20781 M HD 0
GC RA1950rad 0.86364767 DE1950rad -0.5055007 PmRA2000 0.0274
PmDE2000 -0.101
Hipparcos
Catalog H HIP 15526 Proxy RAhms 03 20 02.71
DEdms -28 47 01.2 Vmag 8.48 VarFlag R Vmag G
RAdeg 50.0113 DEdeg -28.7837 AstroRef Plx 27.86
CCDM 03201-2850 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 20781 BD
CD CD-29 1229 CP CP-29 381 Dm number -29 1229 VIred 0.84
SpType K0V R SpType Coord arcsec 2000 032002.71-284701.2
Hipparcos 2
HIP 15526 Sn 5 So 0 Nc 1
RArad 0.8728617464 DErad -0.5023697891 Plx 28.27 PmRA 348.97
PmDE -67.69 E RArad 0.62 E DErad 0.77 E Plx 1.08
E pmRA 0.71 E pmDE 0.91 Hpmag 8.6059 E Hpmag 0.0015
SHp 0.017 VA 0 BV 0.82 E BV 0.015
VI 0.86