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Current system
10304+5621
STF 1436
HD 90804


Nearby doubles
5' : 10308+5620
TDS7306

5' : 10303+5626
TDS7303

10' : 10315+5623
DAM2400

13' : 10302+5633
DAM2391

13' : 10296+5611
HJ 1178

23' : 10306+5559
LDS2863AB

47' : 10318+5706
LDS2314AB

52' : 10262+5544
KPP1606

62' : 10375+5639
MLB 128

69' : 10352+5526
CRB 185

72' : 10316+5732
CVR 566

75' : 10228+5703
SLW 467

76' : 10340+5731
LDS2316

77' : 10212+5625
MLB 127

79' : 10369+5718
HDS1519

80' : 10270+5507
RAO 246

83' : 10279+5501
LDS2859

88' : 10199+5628
UC 1914

101' : 10184+5607
DAM2278

103' : 10407+5719
CVR1303

104' : 10181+5607
HDS1483AB

104' : 10413+5715
HJ 2541

104' : 10180+5609
DAM2261

105' : 10278+5804
SLW 477

106' : 10429+5608
STI2253

106' : 10222+5743
STI2248



Selections
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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.

10304+5621 STF 1436 (HD 90804)

 
 
10h 30m 22.86s +56° 21' 20.0" P.A. 254.00 sep 10.5 mag 8.78,10.39 Sp F5 dist. 118.48 pc (386.48 l.y.)
 
 
Coord 2000 10304+5621 Discov num STF1436 Comp Coord arcsec 2000 10 30 22.86 +56 21 20.0
Date first 1828 Date last 2016 Obs 27
Pa first 254 Pa last 253.5 P.A. Now (θ) 253.5°
Sep first 12.0 Sep last 10.489 Sep. Now (ρ) 10.489"
Mag pri 8.78 Mag sec 10.39 delta mag (ΔM) 1.61 Spectral class F5 (yellow-white)
Pri motion ra -021 Sec motion ra -019
Pri motion dec -028 Sec motion dec -026
Notes Z (Parallax indicates components are physical)
rPM=0.081 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 90804 Constellation Ursa Major SAO 27666 HIP 51441
Tycho2 3819-00470-1 Gaia DR2 853844278744236416 HD 90804 GC 14415
BD BD+57 1271 Distance 118.48 Distance ly 386.48
 
 
WDS 10304+5621 STF 1436 (HD 90804) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
STFA (F. Struve DD - Appendix list #1) ...................
STFB (F. Struve DD - Appendix list #2) ...................
StF1833A Ma - Struve, F.G.W. 1833MmRAS...5...13H
StF1833A +Mc cited by Herschel (MemRAS 5, 13, 1833)
StF1833B Ma - Struve, F.G.W. 1833AN.....10..389B
StF1833B cited by Bessel (AN 10, 389, 1833)
StF1837 Ma - Struve, F.G.W. 1837AN.....14...249
StF1837 Stellarum duplicium et multiplicium mensurae micrometricae...
StF1837 (Dorpat, Academiae scientiarum caesareae petropolitaneifique), 1837
StF1844A Ma - Struve, F.G.W. 1844QB43.S66.......
StF1844A cited by Smyth (Cycle of Celestial Objects 2, 1844)
StF1852A Ma - Struve, F.G.W. .
StF1852A cited by Bishop (Bishop Obs. Astron. Observations 1852)
StF1865A Ma - Struve, F.G.W. 1865AN.....64...81E
StF1865A cited by Engelmann (AN 64, 81, #1518, 1865)
StF1875A Ma - Struve, F.G.W. 1875AN.....85..323D
StF1875A cited by Doberck, 1875 (see Dob1875b,f,g,h)
StF1878 Ma - Struve, F.G.W. .
StF1878 Pulkova Observations 9, 1878
StF1878B Ma - Struve, F.G.W. 1878Obs.....2..239G
StF1878B cited by Gledhill (Obs 2, 239, 1878)
StF1880A Ma - Struve, F.G.W. 1880Obs.....3..535G
StF1880A cited by Gledhill (Obs 3, 535, 1880)
StF1906A Ma - Struve, F.G.W. 1906QB821.B972.....
StF1906A cited in BDS (Burnham Double Star Cat.), 1906
StF1906B Ma - Struve, F.G.W. 1906MmRAS..56....1L
StF1906B cited by Lewis (MemRAS 56, 1, 1906)
StF1922A Ma - Struve, F.G.W. 1922AN....216...49R
StF1922A cited by Rabe (AN 216, 49, 1922)
StF1932A Ma - Struve, F.G.W. 1932QB821.A43......
StF1932A cited in ADS (Aitken Double Star Cat.), 1932
StF2002 - - Weis, J.
StF2002 F. G. W. Struve's double stars : the Dorpat catalogue; the Pulkovo catalogue
StF2002 USNO Library : QB 821 .S8 W49 2002
StF2022 - - email note from Jan Weis: 6 July 2022
StF9999 Ma - Struve, F.G.W. ...................
StF9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10304+5621 STF1436 2004 16 254 10.4 8.78 10.39 F5 ZD 103022.86+562120.0
10304+5621 STF1436 2015 20 254 10.4 8.78 10.39 F5 Z 103022.86+562120.0
10304+5621 STF1436 2016 22 254 10.5 8.78 10.39 F5 Z 103022.86+562120.0

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

 
 
WDS 10304+5621 STF 1436 (HD 90804) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10304+5621 STF 1436 (HD 90804) : MEASURES
 
 
No records found.

 
 
WDS 10304+5621 (HD 90804) : VIRTUAL EYEPIECE
 
 

10304+5621 STF1436A mag 8.78 Sp F5 10304+5621 STF1436B sep 6.3 P.A. 241.90 mag 10.39 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 10304+5621 (HD 90804) : ALADIN DSS IMAGE @ 10h 30m 22.86s +56° 21' 20.0"
 
 
 
 
WDS 10304+5621 STF 1436 (HD 90804) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10304+5621 STF1436 distance=0' 10308+5620 TDS7306 distance=5' 10303+5626 TDS7303 distance=5' 10315+5623 DAM2400 distance=10' 10302+5633 DAM2391 distance=13' 10296+5611 HJ 1178 distance=13' 10306+5559 LDS2863AB distance=23' 10306+5559 ARN 4AC distance=23' 10318+5706 RAO 252Ba,Bb distance=45' 10318+5706 LDS2314AB distance=47' 10262+5544 KPP1606 distance=52' 10375+5639 MLB 128 distance=62' 10352+5526 CRB 185 distance=69' 10316+5732 CVR 566 distance=72' 10228+5703 SLW 467 distance=75' 10340+5731 LDS2316 distance=76' 10212+5625 MLB 127 distance=77' 10369+5718 HDS1519 distance=79' 10270+5507 RAO 246 distance=80' 10279+5501 LDS2859 distance=83' 10199+5628 UC 1914 distance=88' 10184+5607 DAM2278 distance=101' 10407+5719 CVR1303 distance=103' 10181+5607 HDS1483AB distance=104' 10181+5607 DAM2266AB,C distance=104' 10413+5715 HJ 2541 distance=104' 10180+5609 DAM2261 distance=104' 10278+5804 SLW 477 distance=105' 10429+5608 STI2253 distance=106' 10222+5743 STI2248 distance=106' 10410+5721 LDS2317 distance=106' 10428+5653 LDS2585 distance=107' 10178+5559 LDS2852 distance=108' 10377+5752 HDS1521 distance=109' 10326+5431 TDS7329 distance=112' 10173+5651 CRB 184 distance=113' 10366+5440 LDS2870 distance=114' 10411+5735 STI2252 distance=115' 10323+5428 DAM2413 distance=115' 10176+5542 LDS2851 distance=115' 10309+5817 CVR1296 distance=116' 10373+5441 LDS3016 distance=118' 10262+5429 TDS 588 distance=118' 10233+5440 NSN 37 distance=118' 10299+5423 UC 155 distance=119' 10228+5440 DAM2339 distance=121' 10220+5442 WAA 36 distance=123' 10452+5605 SLW 522 distance=125' 10396+5802 STI2251 distance=125' 10183+5505 HJ 2523 distance=128' 10414+5757 LDS2318BC distance=129' 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 10304+5621 STF1436 254 10.5
Show 10308+5620 TDS7306 210 3.8 5
Show 10303+5626 TDS7303 271 0.5 5
Show 10315+5623 DAM2400 80 4.2 10
Show 10302+5633 DAM2391 246 2.5 13
Show 10296+5611 HJ 1178 123 4.9 13
Show 10306+5559 LDS2863 AB 303 122.8 23
Show 10306+5559 ARN 4 AC 292 238.7 23
Show 10318+5706 RAO 252 Ba,Bb 155 0.3 45
Show 10318+5706 LDS2314 AB 226 142.0 47
Show 10262+5544 KPP1606 201 12.2 52
Show 10375+5639 MLB 128 34 6.9 62
Show 10352+5526 CRB 185 215 33.5 69
Show 10316+5732 CVR 566 335 9.6 72
Show 10228+5703 SLW 467 266 12.9 75
Show 10340+5731 LDS2316 342 4.6 76
Show 10212+5625 MLB 127 233 2.4 77
Show 10369+5718 HDS1519 204 0.6 79
Show 10270+5507 RAO 246 171 0.8 80
Show 10279+5501 LDS2859 55 8.8 83
Show 10199+5628 UC 1914 247 17.0 88
Show 10184+5607 DAM2278 124 4.0 101
Show 10407+5719 CVR1303 69 4.4 103
Show 10181+5607 HDS1483 AB 304 0.2 104
Show 10181+5607 DAM2266 AB,C 72 5.0 104
Show 10413+5715 HJ 2541 272 10.7 104
Show 10180+5609 DAM2261 284 2.9 104
Show 10278+5804 SLW 477 100 25.4 105
Show 10429+5608 STI2253 14 11.4 106
Show 10222+5743 STI2248 166 3.2 106
Show 10410+5721 LDS2317 138 5.7 106
Show 10428+5653 LDS2585 290 3.5 107
Show 10178+5559 LDS2852 76 6.8 108
Show 10377+5752 HDS1521 181 0.3 109
Show 10326+5431 TDS7329 181 0.6 112
Show 10173+5651 CRB 184 218 11.5 113
Show 10366+5440 LDS2870 311 9.2 114
Show 10411+5735 STI2252 73 7.0 115
Show 10323+5428 DAM2413 275 1.4 115
Show 10176+5542 LDS2851 223 59.6 115
Show 10309+5817 CVR1296 344 4.0 116
Show 10373+5441 LDS3016 72 130.7 118
Show 10262+5429 TDS 588 339 1.1 118
Show 10233+5440 NSN 37 259 8.9 118
Show 10299+5423 UC 155 243 21.7 119
Show 10228+5440 DAM2339 6 3.9 121
Show 10220+5442 WAA 36 312 1.8 123
Show 10452+5605 SLW 522 171 19.7 125
Show 10396+5802 STI2251 154 4.9 125
Show 10183+5505 HJ 2523 321 12.7 128
Show 10414+5757 LDS2318 BC 268 9.4 129

 
 
WDS 10304+5621 : COMPONENTS
 
 
  A
B pa=241.9°
sep=6.32"
 
 
10304+5621 A
 
 
Componente originario normalizzato AB Name HD 90804 Coord arcsec 2000 103022.86+562120.0 Mag 8.78
Spectral class F5 (yellow-white) PmRA -21.00 PmDE -28.0 SAO 27666
HIP 51445 Tycho2 3819-00470-1 HD 90804 GC 14415
BD BD+57 1271
Tycho2
Tycho2 3819-00470-1 Pflag RAmdeg 157.59523062 DEmdeg 56.35556410
PmRA -21.1 PmDE -25.1 E RAmdeg 7 E DEmdeg 7
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.32 EpDEm 1991.27
Num 8 Q RAmdeg 0.7 Q DEmdeg 0.7 Q pmRA 0.8
Q pmDE 0.7 BTmag 9.214 E BTmag 0.017 VTmag 8.777
E VTmag 0.013 Prox 104 TYC T HIP 51445
CCDM A RAdeg 157.59531889 DEdeg 56.35562250 EpRA 1990 1.70
EpDE 1990 1.64 E RAdeg 6.5 E DEdeg 7.3 Posflg
Corr 0.0
SAO
SAO 27666 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 -0.028 Vmag 8.7 SpType F5
Double code Source 70 CatNum 14415 DM BD+57 1271
DMcomp BDsup HD 90804 M HD 0
GC 14415 RA1950rad 2.73654219 DE1950rad 0.98807432 PmRA2000 -0.0005
PmDE2000 -0.024
Hipparcos
Catalog H HIP 51445 Proxy RAhms 10 30 22.88
DEdms +56 21 20.2 Vmag 8.73 VarFlag R Vmag H
RAdeg 157.595 DEdeg 56.3556 AstroRef A Plx 9.42
CCDM 10304+5621 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual A M HIP
Theta Rho HD 90804 BD BD+57 1271
CD CP Dm number +57 1271 VIred 0.45
SpType F5 R SpType Coord arcsec 2000 103022.88+562120.2
Hipparcos 2
HIP 51445 Sn 95 So 3 Nc 1
RArad 2.7505572472 DErad 0.9835911927 Plx 10.04 PmRA -22.25
PmDE -30.96 E RArad 1.03 E DErad 0.87 E Plx 1.55
E pmRA 1.47 E pmDE 0.93 Hpmag 8.8246 E Hpmag 0.005
SHp 0.026 VA 0 BV 0.407 E BV 0.018
VI 0.47
CCDM
Ccdm 10304+5621 RComp Comp A Note1
Note2 Discov num DRAs -1.12 DDEs 20.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.2 Sp F5 PmNote *
PmRA -17 PmDE -24 Dm number +57 1271 Cat1 BD
Name2 +56 795 Cat2 AGK2/3 HD 90804 M HD
ADS BDS A 7797 M ADS BDS N IDS IDS 10239N5652A
HIC 51445
 
 
10304+5621 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 103022.19+562117.0 Mag 10.39 PmRA -19.00
PmDE -26.0 HIP 51441 Calc delta mag 1.61 Calc coord yes
Hipparcos
Catalog H HIP 51441 Proxy RAhms 10 30 21.68
DEdms +56 21 17.3 Vmag 10.44 VarFlag R Vmag H
RAdeg 157.59 DEdeg 56.3548 AstroRef B Plx 10.55
CCDM 10304+5621 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual A M HIP
Theta Rho HD BD
CD CP Dm number VIred 0.7
SpType R SpType Coord arcsec 2000 103021.68+562117.3
Hipparcos 2
HIP 51441 Sn 95 So 3 Nc 1
RArad 2.7504699024 DErad 0.9835768768 Plx 8.44 PmRA -20.76
PmDE -33.05 E RArad 2.55 E DErad 1.96 E Plx 3.43
E pmRA 3.3 E pmDE 2.15 Hpmag 10.6142 E Hpmag 0.0221
SHp 0 VA 0 BV 0.662 E BV 0.079
VI 0.72
CCDM
Ccdm 10304+5621 RComp Comp B Note1
Note2 Discov num STF1436 DRAs -2.34 DDEs 17.1
R dRAs 90 Year 1831 Theta 252 Rho 10.5
Obs 5 Vmag 9.9 Sp PmNote *
PmRA -18 PmDE -23 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7797 M ADS BDS N IDS IDS 10239N5652B
HIC 51441