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Doubles in session


Current system
10301+2048
STF 1439
HD 90915


Nearby doubles
30' : 10308+2116
SLW 482

31' : 10314+2023
SKF1731

42' : 10331+2052
COU 172

45' : 10300+2133
RAO 251

50' : 10269+2106
CVR1291

50' : 10337+2045
COU 173

61' : 10281+2141
KPP 753

66' : 10280+1950
STF1435

77' : 10344+2136
HU 1338AB

77' : 10301+1931
KPP3818

78' : 10264+1951
GWP1372

79' : 10320+2202
STF1442

80' : 10308+1929
KPP1106

89' : 10248+2002
FMR 215

90' : 10269+1931
COU 292

93' : 10361+2009
TDS7369

102' : 10364+2140
DAM2451

103' : 10349+1930
HJ 485

104' : 10367+2136
LEP 37

116' : 10305+2243
POU3081

120' : 10228+2149
KPP 220

123' : 10217+2124
HJL1058

131' : 10208+2058
SLW 464

131' : 10217+2144
COU 171

139' : 10274+1834
GWP1376

145' : 10332+1830
SLW 491



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.

10301+2048 STF 1439 (HD 90915)

 
 
10h 30m 06.42s +20° 48' 04.3" P.A. 73.00 sep 1.4 mag 8.32,8.87 Sp G0V dist. 76.63 pc (249.97 l.y.)
 
 
Coord 2000 10301+2048 Discov num STF1439 Comp Coord arcsec 2000 10 30 06.42 +20 48 04.3
Date first 1829 Date last 2019 Obs 201
Pa first 131 Pa last 72.9 P.A. Now (θ) 72.9°
Sep first 2.0 Sep last 1.429 Sep. Now (ρ) 1.429"
Mag pri 8.32 Mag sec 8.87 delta mag (ΔM) 0.55 Spectral class G0V (yellow)
Pri motion ra +095 Sec motion ra +095
Pri motion dec -064 Sec motion dec -064
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 90915 Constellation Leo SAO 81385 HIP 51419
Tycho2 1427-00809-1 Gaia DR2 720998775614933376 HD 90915 GC 14425
ADS 7802 BD BD+21 2202 Distance 76.63 Distance ly 249.97
 
 
ORBITAL ELEMENTS
 
 
Period (P)789.3505y± 347.2763 Periastron (T)1767.328y± 59.3052 Semi-major axis (a)2.97269a± 1.21457
Eccentricity (e)0.66568± 0.22683 Inclination (i)106.373°± 8.393 Longitude of periastron (ω)283.11°± 26.004
Node (Ω)140.625°± 10.588 Notes ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 78.8 1.372
2001 78.3 1.369
2002 77.9 1.367
2003 77.4 1.364
2004 77.0 1.362
2005 76.5 1.359
2006 76.1 1.357
2007 75.6 1.354
2008 75.1 1.352
2009 74.7 1.350
2010 74.2 1.348
2011 73.7 1.346
2012 73.3 1.344
2013 72.8 1.342
2014 72.3 1.340
2015 71.8 1.338
2016 71.4 1.336
2017 70.9 1.334
2018 70.4 1.333
2019 69.9 1.331
2020 69.5 1.330
2021 69.0 1.328
2022 68.5 1.327
2023 68.0 1.326
2024 67.5 1.324
2025 67.1 1.323
2026 66.6 1.322
2027 66.1 1.321
2028 65.6 1.320
2029 65.1 1.319
2030 64.6 1.319


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


 
  


wds10301%2B2048a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 10301+2048 STF 1439 (HD 90915) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10301+2048 STF1439 2006 191 79 1.2 8.32 8.87 G0V D 103006.42+204804.3
10301+2048 STF1439 2010 197 75 1.3 8.32 8.87 G0V D 103006.42+204804.3
10301+2048 STF1439 2015 196 71 1.3 8.32 8.87 G0V 103006.42+204804.3
10301+2048 STF1439 2016 197 68 1.4 8.32 8.87 G0V 103006.42+204804.3
10301+2048 STF1439 2017 198 71 1.3 8.32 8.87 G0V 103006.42+204804.3
10301+2048 STF1439 2019 199 73 1.4 8.32 8.87 G0V 103006.42+204804.3

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

 
 
WDS 10301+2048 STF 1439 (HD 90915) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 10301+2048 STF 1439 (HD 90915) : MEASURES
 
 
No records found.

 
 
WDS 10301+2048 (HD 90915) : VIRTUAL EYEPIECE
 
 

10301+2048 STF1439A mag 8.32 Sp G0V 10301+2048 STF1439B sep 1.3 P.A. 71.80 mag 8.87 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 10301+2048 (HD 90915) : ALADIN DSS IMAGE @ 10h 30m 06.42s +20° 48' 04.3"
 
 
 
 
WDS 10301+2048 STF 1439 (HD 90915) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

10301+2048 STF1439 distance=0' 10308+2116 SLW 482 distance=30' 10314+2023 SKF1731 distance=31' 10331+2052 COU 172 distance=42' 10300+2133 RAO 251 distance=45' 10269+2106 CVR1291 distance=50' 10337+2045 COU 173 distance=50' 10281+2141 KPP 753 distance=61' 10280+1950 STF1435 distance=66' 10344+2136 HU 1338AB distance=77' 10344+2136 STF1448AC distance=77' 10301+1931 KPP3818 distance=77' 10264+1951 GWP1372 distance=78' 10320+2202 STF1442 distance=79' 10308+1929 KPP1106 distance=80' 10248+2002 FMR 215 distance=89' 10269+1931 COU 292 distance=90' 10361+2009 TDS7369 distance=93' 10364+2140 DAM2451 distance=102' 10349+1930 HJ 485 distance=103' 10367+2136 LEP 37 distance=104' 10305+2243 POU3081 distance=116' 10228+2149 KPP 220 distance=120' 10217+2124 HJL1058 distance=123' 10208+2058 SLW 464 distance=131' 10217+2144 COU 171 distance=131' 10274+1834 GWP1376 distance=139' 10332+1830 SLW 491 distance=145' 10389+2206 CVR1300 distance=146' 10382+2228 POU3082 distance=150' 10248+2259 UC 1925AB distance=150' 10226+2238 POU3079 distance=152' 10200+1950 STF1424BC distance=154' 10200+1950 STF1424AB (Algieba) distance=154' 10200+1950 STF1424AC (Algieba) distance=154' 10200+1950 STF1424AD (Algieba) distance=154' 10192+2034 STF1423 distance=155' 10236+2254 CVR1287 distance=156' 10261+1821 COU 291 distance=158' 10200+1950 BAG 32Ca,Cb distance=158' 10200+1950 STF1424CD distance=158' 10200+1950 FYM 38CE distance=158' 10200+1950 FYM 38CF distance=158' 10192+2008 CVR1280 distance=159' 10338+2321 STF1447 distance=162' 10394+2228 BAR 39 distance=164' 10213+1859 TDS7209 distance=166' 10197+1928 WNO 53AB distance=167' 10255+2322 POU3080 distance=167' 10401+1914 PER 2AB distance=169' 10401+1914 STT 225AC distance=169' 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 10301+2048 STF1439 73 1.4
Show 10308+2116 SLW 482 175 16.5 30
Show 10314+2023 SKF1731 215 1.2 31
Show 10331+2052 COU 172 33 0.3 42
Show 10300+2133 RAO 251 286 1.2 45
Show 10269+2106 CVR1291 106 3.6 50
Show 10337+2045 COU 173 185 0.8 50
Show 10281+2141 KPP 753 283 6.6 61
Show 10280+1950 STF1435 203 8.5 66
Show 10344+2136 HU 1338 AB 184 3.5 77
Show 10344+2136 STF1448 AC 260 11.0 77
Show 10301+1931 KPP3818 198 2.4 77
Show 10264+1951 GWP1372 145 110.9 78
Show 10320+2202 STF1442 157 13.3 79
Show 10308+1929 KPP1106 323 8.8 80
Show 10248+2002 FMR 215 264 2.5 89
Show 10269+1931 COU 292 50 0.2 90
Show 10361+2009 TDS7369 277 0.7 93
Show 10364+2140 DAM2451 63 39.1 102
Show 10349+1930 HJ 485 157 18.9 103
Show 10367+2136 LEP 37 46 14.6 104
Show 10305+2243 POU3081 273 7.3 116
Show 10228+2149 KPP 220 149 3.9 120
Show 10217+2124 HJL1058 149 196.1 123
Show 10208+2058 SLW 464 77 179.6 131
Show 10217+2144 COU 171 130 3.7 131
Show 10274+1834 GWP1376 283 136.8 139
Show 10332+1830 SLW 491 68 135.9 145
Show 10389+2206 CVR1300 82 4.0 146
Show 10382+2228 POU3082 294 3.9 150
Show 10248+2259 UC 1925 AB 33 39.0 150
Show 10226+2238 POU3079 31 9.9 152
Show 10200+1950 STF1424 BC 288 327.4 154
Show Algieba 10200+1950 STF1424 AB 127 4.7 154
Show Algieba 10200+1950 STF1424 AC 288 341.2 154
Show Algieba 10200+1950 STF1424 AD 302 371.3 154
Show 10192+2034 STF1423 308 0.7 155
Show 10236+2254 CVR1287 299 3.0 156
Show 10261+1821 COU 291 66 0.8 158
Show 10200+1950 BAG 32 Ca,Cb 24 0.2 158
Show 10200+1950 STF1424 CD 6 90.7 158
Show 10200+1950 FYM 38 CE 59 148.6 158
Show 10200+1950 FYM 38 CF 238 53.4 158
Show 10192+2008 CVR1280 275 3.3 159
Show 10338+2321 STF1447 124 4.6 162
Show 10394+2228 BAR 39 289 1.1 164
Show 10213+1859 TDS7209 65 0.7 166
Show 10197+1928 WNO 53 AB 308 999.9 167
Show 10255+2322 POU3080 102 5.7 167
Show 10401+1914 PER 2 AB 231 0.4 169
Show 10401+1914 STT 225 AC 356 6.5 169

 
 
WDS 10301+2048 : COMPONENTS
 
 
  A
B pa=71.8°
sep=1.34"
 
 
10301+2048 A
 
 
Componente originario normalizzato AB Name HD 90915 Coord arcsec 2000 103006.42+204804.3 Mag 8.32
Spectral class G0V (yellow) PmRA 95.00 PmDE -64.0 SAO 81385
HIP 51419 Tycho2 1427-00809-1 HD 90915 GC 14425
BD BD+21 2202
Tycho2
Tycho2 1427-00809-1 Pflag P RAmdeg 157.52674164 DEmdeg 20.80120150
PmRA 95.1 PmDE -63.5 E RAmdeg 8 E DEmdeg 10
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.18 EpDEm 1990.76
Num 6 Q RAmdeg 2.1 Q DEmdeg 1.5 Q pmRA 2.2
Q pmDE 1.6 BTmag 8.973 E BTmag 0.020 VTmag 8.320
E VTmag 0.015 Prox 14 TYC T HIP 51419
CCDM A RAdeg 157.52638667 DEdeg 20.80133444 EpRA 1990 1.69
EpDE 1990 1.56 E RAdeg 7.7 E DEdeg 9.6 Posflg D
Corr 0.1
SAO
SAO 81385 DelFlag RA1950 PmRA1950 0.0074
DE1950 PmDE1950 -0.079 Vmag 8.4 SpType G5
Double code Source 70 CatNum 14425 DM BD+21 2202
DMcomp BDsup HD 90915 M HD 0
GC 14425 RA1950rad 2.7374354 DE1950rad 0.36753882 PmRA2000 0.0073
PmDE2000 -0.074
Hipparcos
Catalog H HIP 51419 Proxy H RAhms 10 30 06.33
DEdms +20 48 04.8 Vmag 7.76 VarFlag R Vmag H
RAdeg 157.526 DEdeg 20.8013 AstroRef A Plx 12.53
CCDM 10301+2048 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 82 Rho 1.419 HD 90915 BD BD+21 2202
CD CP Dm number +21 2202 VIred 0.66
SpType G0V R SpType Coord arcsec 2000 103006.33+204804.8
Hipparcos 2
HIP 51419 Sn 15 So 3 Nc 2
RArad 2.7493538053 DErad 0.363051953 Plx 13.05 PmRA 100.78
PmDE -63.65 E RArad 0.72 E DErad 0.54 E Plx 0.82
E pmRA 0.93 E pmDE 0.65 Hpmag 7.8783 E Hpmag 0.0012
SHp 0.011 VA 0 BV 0.584 E BV 0.096
VI 0.63
CCDM
Ccdm 10301+2048 RComp Comp A Note1
Note2 Discov num DRAs 0.38 DDEs 5.0
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.9 Sp G5 PmNote *
PmRA 87 PmDE -58 Dm number +21 2202 Cat1 BD
Name2 +21 1130 Cat2 AGK2/3 HD 90915 M HD
ADS BDS A 7802 M ADS BDS N IDS IDS 10246N2119A
HIC 51419
 
 
10301+2048 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 103006.51+204804.7 Mag 8.87 PmRA 95.00
PmDE -64.0 Tycho2 1427-00809-2 Calc delta mag 0.55 Calc coord yes
Tycho2
Tycho2 1427-00809-2 Pflag P RAmdeg 157.52674164 DEmdeg 20.80120150
PmRA 95.1 PmDE -63.5 E RAmdeg 8 E DEmdeg 10
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.18 EpDEm 1990.76
Num 6 Q RAmdeg 2.1 Q DEmdeg 1.5 Q pmRA 2.2
Q pmDE 1.6 BTmag 9.560 E BTmag 0.027 VTmag 8.873
E VTmag 0.020 Prox 14 TYC HIP 51419
CCDM B RAdeg 157.52680028 DEdeg 20.80138917 EpRA 1990 1.69
EpDE 1990 1.53 E RAdeg 11.2 E DEdeg 14.7 Posflg D
Corr 0.1
CCDM
Ccdm 10301+2048 RComp Comp B Note1
Note2 Discov num STF1439 DRAs DDEs
R dRAs Year 1960 Theta 094 Rho 1.6
Obs 99 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 7802 M ADS BDS N IDS IDS 10246N2119B
HIC 51419