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Doubles in session


Current system
05487-1419
HDS 781
HD 38931


Nearby doubles
18' : 05496-1429
BU 94

31' : 05502-1359
KPP3636

32' : 05504-1438
RST4787

33' : 05499-1445
BRT1840

33' : 05509-1421
TVB 108

39' : 05510-1438
TDS3377

49' : 05479-1332
BU 405

52' : 05457-1447
A 3018

54' : 05485-1325
BU 406

58' : 05526-1420
KPP 579

63' : 05456-1503
ENG 23AB

72' : 05452-1510
HLD 77

89' : 05452-1306
GWP 701

89' : 05521-1305
GWP 720

93' : 05486-1247
HLD 78

93' : 05525-1533
RST4790AB

95' : 05470-1248
A 2511

96' : 05521-1540
BRT 564AB

98' : 05459-1548
BVD 56

99' : 05450-1254
GAL 199AB

101' : 05425-1505
HU 1230

101' : 05515-1247
HJ 3804

101' : 05418-1402
TDS3293

103' : 05556-1358
KPP1954

103' : 05457-1552
TOK 101

105' : 05529-1255
TDS3402



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.

05487-1419 HDS 781 (HD 38931)

 
 
05h 48m 39.68s -14° 18' 51.7" P.A. 81.00 sep 0.2 mag 7.16,8.55 Sp G6/G8III/ dist. 145.35 pc (474.13 l.y.)
 
 
Coord 2000 05487-1419 Discov num HDS 781 Comp Coord arcsec 2000 05 48 39.68 -14 18 51.7
Date first 1991 Date last 2020 Obs 9
Pa first 295 Pa last 81.4 P.A. Now (θ) 81.4°
Sep first 0.1 Sep last 0.205 Sep. Now (ρ) 0.205"
Mag pri 7.16 Mag sec 8.55 delta mag (ΔM) 1.39 Spectral class G6/G8III/ (yellow)
Pri motion ra -008 Sec motion ra
Pri motion dec -001 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 38931 Constellation Lepus SAO 150830 HIP 27444
Tycho2 5359-01666-1 Gaia DR2 2996587794679897216 HD 38931 GC 7296
BD BD-14 1243 Distance 145.35 Distance ly 474.13
 
 
ORBITAL ELEMENTS
 
 
Period (P)105y Periastron (T)1991.94y Semi-major axis (a)0.195a
Eccentricity (e)0.277 Inclination (i)46.9° Longitude of periastron (ω)205.8°
Node (Ω)100.1° Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 347.4 0.108
2001 354.7 0.108
2002 2.1 0.108
2003 9.3 0.110
2004 16.3 0.112
2005 23.0 0.115
2006 29.2 0.120
2007 34.9 0.124
2008 40.3 0.130
2009 45.1 0.135
2010 49.6 0.141
2011 53.7 0.148
2012 57.5 0.154
2013 61.0 0.160
2014 64.2 0.166
2015 67.2 0.173
2016 69.9 0.179
2017 72.5 0.184
2018 75.0 0.190
2019 77.3 0.195
2020 79.5 0.201
2021 81.5 0.206
2022 83.5 0.210
2023 85.4 0.214
2024 87.2 0.218
2025 89.0 0.222
2026 90.7 0.226
2027 92.4 0.229
2028 94.0 0.232
2029 95.6 0.234
2030 97.1 0.236


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


 
  


wds05487-1419a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 05487-1419 HDS 781 (HD 38931) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2021c orb - Tokovinin, A. 2021IAUDS.203....1S
Tok2021c Inf. Circ. 203, 1, 2021
 
 
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
05487-1419 HDS 781 1991 1 295 0.1 7.16 8.55 G6/G8III/ 054839.68-141851.7
05487-1419 HDS 781 2014 3 245 0.2 7.16 8.55 G6/G8III/ 054839.68-141851.7
05487-1419 HDS 781 2015 4 70 0.2 7.16 8.55 G6/G8III/ 054839.68-141851.7
05487-1419 HDS 781 2016 7 72 0.2 7.16 8.55 G6/G8III/ 054839.68-141851.7
05487-1419 HDS 781 2018 8 76 0.2 7.16 8.55 G6/G8III/ 054839.68-141851.7
05487-1419 HDS 781 2020 9 81 0.2 7.16 8.55 G6/G8III/ 054839.68-141851.7

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

 
 
WDS 05487-1419 HDS 781 (HD 38931) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 05487-1419 HDS 781 (HD 38931) : MEASURES
 
 
No records found.

 
 
WDS 05487-1419 (HD 38931) : VIRTUAL EYEPIECE
 
 

05487-1419 HDS 781A mag 7.16 Sp G6/G8III/ 05487-1419 HDS 781B sep 0.2 P.A. 81.10 mag 8.55 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 05487-1419 (HD 38931) : ALADIN DSS IMAGE @ 05h 48m 39.68s -14° 18' 51.7"
 
 
 
 
WDS 05487-1419 HDS 781 (HD 38931) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

05487-1419 HDS 781 distance=0' 05496-1429 BU 94 distance=18' 05502-1359 KPP3636 distance=31' 05504-1438 RST4787 distance=32' 05499-1445 BRT1840 distance=33' 05509-1421 TVB 108 distance=33' 05510-1438 TDS3377 distance=39' 05479-1332 BU 405 distance=49' 05457-1447 A 3018 distance=52' 05485-1325 BU 406 distance=54' 05526-1420 KPP 579 distance=58' 05485-1322 STF 801A,BC distance=58' 05485-1322 RST5502BC distance=58' 05456-1503 ENG 23AB distance=63' 05456-1503 ENG 23AC distance=63' 05456-1503 BUP 83AD distance=63' 05456-1503 BUP 83CE distance=66' 05452-1510 HLD 77 distance=72' 05452-1306 GWP 701 distance=89' 05521-1305 GWP 720 distance=89' 05486-1247 HLD 78 distance=93' 05525-1533 RST4790AB distance=93' 05525-1533 RST4790AC distance=93' 05525-1533 DAM1394CD distance=94' 05470-1248 A 2511 distance=95' 05521-1540 BRT 564AB distance=96' 05459-1548 BVD 56 distance=98' 05450-1254 GAL 199AB distance=99' 05450-1254 GAL 199AC distance=99' 05425-1505 HU 1230 distance=101' 05515-1247 HJ 3804 distance=101' 05418-1402 TDS3293 distance=101' 05556-1358 KPP1954 distance=103' 05457-1552 TOK 101 distance=103' 05529-1255 TDS3402 distance=105' 05495-1234 HDS 783 distance=106' 05525-1551 RST4789 distance=108' 05413-1416 HJ 3785 distance=108' 05426-1525 TDS3296 distance=110' 05425-1535 YMG 13 distance=118' 05544-1544 A 3019BC distance=119' 05544-1544 A 3019AB distance=119' 05441-1559 ARA 23AB distance=121' 05495-1213 FOX 143AB distance=127' 05495-1213 FOX 143AC distance=127' 05571-1455 BRT1841 distance=128' 05539-1234 BRT2645 distance=130' 05578-1413 GAL 395 distance=133' 05578-1405 CON 21Aa,Ab distance=134' 05578-1405 CON 21AB distance=134' 05580-1402 LDS 149 distance=136' 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 05487-1419 HDS 781 81 0.2
Show 05496-1429 BU 94 164 2.3 18
Show 05502-1359 KPP3636 269 1.4 31
Show 05504-1438 RST4787 105 4.0 32
Show 05499-1445 BRT1840 75 5.4 33
Show 05509-1421 TVB 108 251 22.5 33
Show 05510-1438 TDS3377 130 0.5 39
Show 05479-1332 BU 405 128 14.2 49
Show 05457-1447 A 3018 305 0.9 52
Show 05485-1325 BU 406 272 9.1 54
Show 05526-1420 KPP 579 235 5.4 58
Show 05485-1322 STF 801 A,BC 326 27.4 58
Show 05485-1322 RST5502 BC 99 0.2 58
Show 05456-1503 ENG 23 AB 161 123.9 63
Show 05456-1503 ENG 23 AC 229 166.3 63
Show 05456-1503 BUP 83 AD 259 35.0 63
Show 05456-1503 BUP 83 CE 213 34.6 66
Show 05452-1510 HLD 77 296 2.5 72
Show 05452-1306 GWP 701 320 18.0 89
Show 05521-1305 GWP 720 269 14.4 89
Show 05486-1247 HLD 78 163 2.0 93
Show 05525-1533 RST4790 AB 15 2.5 93
Show 05525-1533 RST4790 AC 67 204.0 93
Show 05525-1533 DAM1394 CD 3 3.5 94
Show 05470-1248 A 2511 178 2.1 95
Show 05521-1540 BRT 564 AB 136 4.5 96
Show 05459-1548 BVD 56 109 72.1 98
Show 05450-1254 GAL 199 AB 189 31.7 99
Show 05450-1254 GAL 199 AC 51 6.7 99
Show 05425-1505 HU 1230 319 2.7 101
Show 05515-1247 HJ 3804 20 12.8 101
Show 05418-1402 TDS3293 55 0.4 101
Show 05556-1358 KPP1954 78 15.4 103
Show 05457-1552 TOK 101 9.4 103
Show 05529-1255 TDS3402 78 0.9 105
Show 05495-1234 HDS 783 169 1.9 106
Show 05525-1551 RST4789 117 1.6 108
Show 05413-1416 HJ 3785 146 15.9 108
Show 05426-1525 TDS3296 159 0.9 110
Show 05425-1535 YMG 13 221 1.2 118
Show 05544-1544 A 3019 BC 7 3.6 119
Show 05544-1544 A 3019 AB 41 46.5 119
Show 05441-1559 ARA 23 AB 356 8.6 121
Show 05495-1213 FOX 143 AB 307 8.8 127
Show 05495-1213 FOX 143 AC 290 45.9 127
Show 05571-1455 BRT1841 37 4.9 128
Show 05539-1234 BRT2645 128 5.5 130
Show 05578-1413 GAL 395 79 7.9 133
Show 05578-1405 CON 21 Aa,Ab 115 0.2 134
Show 05578-1405 CON 21 AB 178 5.8 134
Show 05580-1402 LDS 149 230 2.4 136

 
 
WDS 05487-1419 : COMPONENTS
 
 
  A
B pa=81.1°
sep=0.20"
 
 
05487-1419 A
 
 
Componente originario normalizzato AB Name HD 38931 Coord arcsec 2000 054839.68-141851.7 Mag 7.16
Spectral class G6/G8III/ (yellow) PmRA -8.00 PmDE -1.0 SAO 150830
HIP 27444 Tycho2 5359-01666-1 HD 38931 GC 7296
BD BD-14 1243
Tycho2
Tycho2 5359-01666-1 Pflag RAmdeg 87.16533278 DEmdeg -14.31435580
PmRA -6.0 PmDE -2.9 E RAmdeg 4 E DEmdeg 4
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.39 EpDEm 1991.30
Num 14 Q RAmdeg 1.8 Q DEmdeg 1.0 Q pmRA 1.7
Q pmDE 1.0 BTmag 7.861 E BTmag 0.015 VTmag 6.827
E VTmag 0.010 Prox 999 TYC T HIP 27444
CCDM AB RAdeg 87.16534694 DEdeg -14.31434944 EpRA 1990 1.72
EpDE 1990 1.61 E RAdeg 4.1 E DEdeg 4.3 Posflg P
Corr 0.0
SAO
SAO 150830 DelFlag RA1950 PmRA1950 -0.0028
DE1950 PmDE1950 0.009 Vmag 6.9 SpType G5
Double code Source 70 CatNum 7296 DM BD-14 1243
DMcomp BDsup HD 38931 M HD 0
GC 7296 RA1950rad 1.51137212 DE1950rad -0.25009508 PmRA2000 -0.0023
PmDE2000 0.011
Hipparcos
Catalog H HIP 27444 Proxy H RAhms 05 48 39.68
DEdms -14 18 51.7 Vmag 6.74 VarFlag R Vmag H
RAdeg 87.1653 DEdeg -14.3144 AstroRef * Plx 6.12
CCDM 05487-1419 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source S Qual B M HIP AB
Theta 295 Rho 0.136 HD 38931 BD BD-14 1243
CD CP Dm number -14 1243 VIred 0.9
SpType G6/G8III/IV R SpType Coord arcsec 2000 054839.68-141851.7
Hipparcos 2
HIP 27444 Sn 55 So 3 Nc 2
RArad 1.5213222938 DErad -0.2498325313 Plx 6.88 PmRA -7.02
PmDE -0.67 E RArad 0.4 E DErad 0.38 E Plx 0.63
E pmRA 0.43 E pmDE 0.41 Hpmag 6.8948 E Hpmag 0.0012
SHp 0.009 VA 0 BV 0.884 E BV 0.007
VI 0.89
CCDM
Ccdm 05487-1419 RComp Comp A Note1
Note2 Discov num DRAs -2.32 DDEs 8.3
R dRAs 82 Year Theta Rho
Obs 2 Vmag 7.2 Sp G6 PmNote *
PmRA -8 PmDE -1 Dm number -14 1243 Cat1 BD
Name2 150830 Cat2 SAO HD 38931 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 27444
 
 
05487-1419 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 054839.69-141851.7 Mag 8.55 Calc delta mag 1.39
Calc coord yes
CCDM
Ccdm 05487-1419 RComp Comp B Note1
Note2 Discov num HDS DRAs -2.33 DDEs 8.4
R dRAs 82 Year 1991 Theta 295 Rho 0.1
Obs 1 Vmag 8.5 Sp PmNote *
PmRA -8 PmDE -1 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 27444