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Doubles in session


Current system
21330+2043
STF 2804 AB
HD 205160


Nearby doubles
9' : 21326+2048
GMC 21

27' : 21334+2018
J 613

38' : 21313+2112
GRV 473

52' : 21352+2124
BU 74

54' : 21310+2128
COU 232

55' : 21347+1953
TDT3040

61' : 21287+2028
J 611

73' : 21379+2102
YR 30

85' : 21349+1923
TDT3041

85' : 21269+2033
GRV 469

86' : 21391+2036
STT 444

90' : 21393+2043
STT 445

90' : 21282+1943
UC 4474

91' : 21267+2027
UC 4468

95' : 21397+2041
GMC 23

102' : 21362+1912
TDT3052

103' : 21284+1924
CVR 247

103' : 21257+2058
J 3138

103' : 21368+1915
BRT2498

103' : 21259+2017
CVR 901

105' : 21290+2211
HJ 1647AB

105' : 21399+2005
UC 4521

108' : 21286+2211
BRT2496AB

113' : 21290+1906
J 579

114' : 21283+2215
J 3140

114' : 21403+1955
SLW1246



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.

21330+2043 STF 2804 AB (HD 205160)

 
 
21h 32m 58.30s +20° 42' 44.5" P.A. 359.00 sep 3.4 mag 7.70,8.04 Sp F5V dist. 56.53 pc (184.4 l.y.)
 
 
Coord 2000 21330+2043 Discov num STF2804 Comp AB Coord arcsec 2000 21 32 58.30 +20 42 44.5
Date first 1825 Date last 2022 Obs 288
Pa first 312 Pa last 359.4 P.A. Now (θ) 359.4°
Sep first 2.6 Sep last 3.41 Sep. Now (ρ) 3.41"
Mag pri 7.70 Mag sec 8.04 delta mag (ΔM) 0.34 Spectral class F5V (yellow-white)
Pri motion ra +002 Sec motion ra -005
Pri motion dec -041 Sec motion dec -025
Notes N C (See Notes, Has orbit and linear solution)
rPM=0.425
This double is physical.
 
 
21330+2043 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 205160 89792 21 32 58 +20 42 44 STF 2804 AB 2022 288 359 3.4 7.70 8.04 0.34 Y <===
Show 21 32 58 +20 42 44 STF 2804 AC 2013 11 103 97.1 7.70 12.51 4.81
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 205160 Constellation Pegasus SAO 89792 HIP 106395
Tycho2 1676-00789-1 Gaia DR2 1787693589076214016 HD 205160 GC 30172
ADS 15076 BD BD+20 4955 Distance 56.53 Distance ly 184.4
 
 
ORBITAL ELEMENTS
 
 
Period (P)2154.7082y± 965.8368 Periastron (T)1630.2031y± 525.0053 Semi-major axis (a)11.66817a± 6.10466
Eccentricity (e)0.90363± 0.1573 Inclination (i)77.8°± 9.205 Longitude of periastron (ω)107.981°± 29.087
Node (Ω)84.414°± 43.766 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 355.3 3.240
2001 355.5 3.245
2002 355.7 3.250
2003 355.9 3.255
2004 356.1 3.260
2005 356.3 3.265
2006 356.4 3.270
2007 356.6 3.275
2008 356.8 3.280
2009 357.0 3.285
2010 357.2 3.290
2011 357.4 3.295
2012 357.6 3.300
2013 357.8 3.305
2014 358.0 3.310
2015 358.2 3.315
2016 358.3 3.320
2017 358.5 3.326
2018 358.7 3.331
2019 358.9 3.336
2020 359.1 3.341
2021 359.3 3.347
2022 359.5 3.352
2023 359.6 3.357
2024 359.8 3.363
2025 3.368
2026 0.2 3.373
2027 0.4 3.379
2028 0.5 3.384
2029 0.7 3.390
2030 0.9 3.395


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


 
  


wds21330%2B2043a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21330+2043 STF 2804 AB (HD 205160) : NOTES
 
 
discov_num notes refcode
STF2804 Mt. Wilson spectral types F5s and F8.
 
 
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
21330+2043 STF2804 AB 2007 256 357 3.3 7.70 8.04 F5V NLD 213258.33+204241.7
21330+2043 STF2804 AB 2008 259 357 3.3 7.70 8.04 F5V NLD 213258.33+204241.7
21330+2043 STF2804 AB 2010 264 356 3.5 7.70 8.04 F5V NLD 213258.33+204241.7
21330+2043 STF2804 AB 2011 268 357 3.2 7.70 8.04 F5V NLD 213258.33+204241.7
21330+2043 STF2804 AB 2014 270 358 3.6 7.70 8.04 F5V NLD 213258.33+204241.7
21330+2043 STF2804 AB 2016 277 359 3.4 7.70 8.04 F5V NL 213258.30+204244.5
21330+2043 STF2804 AB 2018 282 1 3.7 7.70 8.04 F5V NL 213258.30+204244.5
21330+2043 STF2804 AB 2019 286 359 3.3 7.70 8.04 F5V NC 213258.30+204244.5
21330+2043 STF2804 AB 2022 288 359 3.4 7.70 8.04 F5V NC 213258.30+204244.5

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

 
 
WDS 21330+2043 STF 2804 AB (HD 205160) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21330+2043 STF 2804 AB (HD 205160) : MEASURES
 
 
No records found.

 
 
WDS 21330+2043 (HD 205160) : VIRTUAL EYEPIECE
 
 

21330+2043 STF2804A mag 7.7 Sp F5V 21330+2043 STF2804B sep 3.4 P.A. 359.40 mag 8.04 21330+2043 STF2804C sep 91.1 P.A. 103.40 mag 12.51 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 21330+2043 (HD 205160) : ALADIN DSS IMAGE @ 21h 32m 58.30s +20° 42' 44.5"
 
 
 
 
WDS 21330+2043 STF 2804 AB (HD 205160) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21330+2043 STF2804AB distance=0' 21326+2048 GMC 21 distance=9' 21334+2018 J 613 distance=27' 21313+2112 GRV 473 distance=38' 21352+2124 BU 74 distance=52' 21310+2128 COU 232 distance=54' 21347+1953 TDT3040 distance=55' 21287+2028 J 611 distance=61' 21379+2102 YR 30 distance=73' 21349+1923 TDT3041 distance=85' 21269+2033 GRV 469 distance=85' 21391+2036 STT 444 distance=86' 21393+2043 STT 445 distance=90' 21282+1943 UC 4474 distance=90' 21267+2027 UC 4468 distance=91' 21397+2041 GMC 23 distance=95' 21362+1912 TDT3052 distance=102' 21284+1924 CVR 247 distance=103' 21257+2058 J 3138 distance=103' 21368+1915 BRT2498 distance=103' 21259+2017 CVR 901 distance=103' 21290+2211 HJ 1647AB distance=105' 21290+2211 HJ 1647AC distance=105' 21399+2005 UC 4521 distance=105' 21286+2211 BRT2496AB distance=108' 21286+2211 FYM 288AC distance=108' 21290+1906 J 579 distance=113' 21283+2215 J 3140 distance=114' 21403+1955 SLW1246 distance=114' 21323+1848 BRT2497 distance=116' 21368+1858 TDT3062 distance=118' 21247+2116 HU 370 distance=121' 21373+2230 CVR 911 distance=123' 21417+2100 UC 4531 distance=124' 21248+1956 KPP3370 distance=124' 21408+2140 LDS4903 distance=124' 21261+2201 OCC9222 distance=125' 21385+1902 TDT3077AB distance=128' 21385+1902 SKF 292AB,C distance=128' 21384+1858 TDT3075 distance=130' 21399+1914 COU 330 distance=133' 21237+2016 COU 230 distance=133' 21419+1949 CBL 533 distance=138' 21427+2102 J 614 distance=139' 21235+2125 SKF 15 distance=139' 21307+2258 COU 134 distance=139' 21409+1915 HDS3086 distance=142' 21234+2139 J 2345 distance=145' 21424+2140 GRV 495 distance=145' 21259+2229 TDT2960 distance=146' 21433+2046 J 852 distance=146' 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 21330+2043 STF2804 AB 359 3.4
Show 21330+2043 STF2804 AC 103 97.1
Show 21326+2048 GMC 21 130 10.5 9
Show 21334+2018 J 613 222 5.1 27
Show 21313+2112 GRV 473 26 46.4 38
Show 21352+2124 BU 74 338 1.0 52
Show 21310+2128 COU 232 34 0.6 54
Show 21347+1953 TDT3040 23 0.9 55
Show 21287+2028 J 611 21 1.8 61
Show 21379+2102 YR 30 340 0.1 73
Show 21349+1923 TDT3041 350 0.8 85
Show 21269+2033 GRV 469 264 21.2 85
Show 21391+2036 STT 444 277 8.0 86
Show 21393+2043 STT 445 120 1.0 90
Show 21282+1943 UC 4474 276 9.5 90
Show 21267+2027 UC 4468 334 43.8 91
Show 21397+2041 GMC 23 342 10.5 95
Show 21362+1912 TDT3052 197 1.7 102
Show 21284+1924 CVR 247 263 79.8 103
Show 21257+2058 J 3138 256 3.1 103
Show 21368+1915 BRT2498 268 5.0 103
Show 21259+2017 CVR 901 143 28.8 103
Show 21290+2211 HJ 1647 AB 178 41.5 105
Show 21290+2211 HJ 1647 AC 128 38.8 105
Show 21399+2005 UC 4521 35 12.3 105
Show 21286+2211 BRT2496 AB 236 4.6 108
Show 21286+2211 FYM 288 AC 60 15.2 108
Show 21290+1906 J 579 182 3.7 113
Show 21283+2215 J 3140 223 5.9 114
Show 21403+1955 SLW1246 345 155.2 114
Show 21323+1848 BRT2497 187 1.8 116
Show 21368+1858 TDT3062 151 0.6 118
Show 21247+2116 HU 370 105 2.1 121
Show 21373+2230 CVR 911 174 10.5 123
Show 21417+2100 UC 4531 213 69.8 124
Show 21248+1956 KPP3370 333 0.9 124
Show 21408+2140 LDS4903 100 81.0 124
Show 21261+2201 OCC9222 308 9.0 125
Show 21385+1902 TDT3077 AB 294 0.4 128
Show 21385+1902 SKF 292 AB,C 91 16.2 128
Show 21384+1858 TDT3075 250 1.0 130
Show 21399+1914 COU 330 190 0.5 133
Show 21237+2016 COU 230 187 0.9 133
Show 21419+1949 CBL 533 123 64.8 138
Show 21427+2102 J 614 307 2.0 139
Show 21235+2125 SKF 15 262 40.2 139
Show 21307+2258 COU 134 13 1.5 139
Show 21409+1915 HDS3086 66 1.1 142
Show 21234+2139 J 2345 202 4.6 145
Show 21424+2140 GRV 495 146 33.8 145
Show 21259+2229 TDT2960 189 0.9 146

 
 
WDS 21330+2043 : COMPONENTS
 
 
  A B
B pa=359.4°
sep=3.41"
 
C pa=103.4°
sep=91.11"
pa=105.5°
sep=91.99"
 
 
21330+2043 A
 
 
Name HD 205160 Coord arcsec 2000 213258.30+204244.5 Mag 7.7 Spectral class F5V (yellow-white)
PmRA 2.00 PmDE -41.0
CCDM
Ccdm 21330+2043 RComp Comp A Note1
Note2 Discov num DRAs -1.70 DDEs -17.1
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.6 Sp F5 PmNote *
PmRA -12 PmDE -47 Dm number +20 4955 Cat1 BD
Name2 89792 Cat2 SAO HD 205160 M HD
ADS BDS A15076 M ADS BDS N IDS IDS 21284N2016A
HIC 106395
 
 
21330+2043 B
 
 
Coord arcsec 2000 213258.30+204247.9 Mag 8.04 PmRA -5.00 PmDE -25.0
SAO 89792 HIP 106395 Tycho2 1676-00789-2 HD 205160
GC 30172 BD BD+20 4955 Calc delta mag 0.34 Calc coord yes
Tycho2
Tycho2 1676-00789-2 Pflag RAmdeg 323.24293205 DEmdeg 20.71242592
PmRA -5.3 PmDE -25.4 E RAmdeg 6 E DEmdeg 6
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.56 EpDEm 1991.66
Num 4 Q RAmdeg 2.0 Q DEmdeg 1.5 Q pmRA 1.9
Q pmDE 1.4 BTmag 8.589 E BTmag 0.017 VTmag 8.043
E VTmag 0.012 Prox 33 TYC HIP 106395
CCDM B RAdeg 323.24294500 DEdeg 20.71248306 EpRA 1990 1.78
EpDE 1990 1.89 E RAdeg 5.5 E DEdeg 5.8 Posflg D
Corr -0.1
SAO
SAO 89792 DelFlag RA1950 PmRA1950 -0.0015
DE1950 PmDE1950 -0.027 Vmag 7.6 SpType F5
Double code Source 70 CatNum 30172 DM BD+20 4955
DMcomp B BDsup HD 205160 M HD 0
GC 30172 RA1950rad 5.63157147 DE1950rad 0.35762131 PmRA2000 -0.0015
PmDE2000 -0.031
Hipparcos
Catalog H HIP 106395 Proxy H RAhms 21 32 58.33
DEdms +20 42 41.7 Vmag 7.02 VarFlag R Vmag G
RAdeg 323.243 DEdeg 20.7116 AstroRef A Plx 18.41
CCDM 21330+2043 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 353 Rho 3.261 HD 205160 BD BD+20 4955
CD CP Dm number +20 4955 VIred 0.6
SpType F6IV R SpType Coord arcsec 2000 213258.33+204241.7
Hipparcos 2
HIP 106395 Sn 15 So 3 Nc 2
RArad 5.6416556204 DErad 0.3614852987 Plx 17.69 PmRA -13.33
PmDE -39.52 E RArad 0.52 E DErad 0.74 E Plx 0.74
E pmRA 0.71 E pmDE 0.8 Hpmag 7.1197 E Hpmag 0.0011
SHp 0.011 VA 0 BV 0.529 E BV 0.015
VI 0.6
CCDM
Ccdm 21330+2043 RComp Comp B Note1
Note2 Discov num STF2804 DRAs -1.73 DDEs -15.2
R dRAs 10 Year 1959 Theta 347 Rho 3.1
Obs 99 Vmag 8.3 Sp PmNote *
PmRA 1 PmDE -35 Dm number Cat1
Name2 89791 Cat2 SAO HD M HD
ADS BDS A15076 M ADS BDS N N IDS IDS 21284N2016B
HIC 106395
 
 
21330+2043 C
 
 
Coord arcsec 2000 213304.62+204223.3 Mag 12.51 PmRA 4.00 PmDE -1.0
Tycho2 1676-00916-1 Calc delta mag 4.81 Calc coord yes
Tycho2
Tycho2 1676-00916-1 Pflag RAmdeg 323.27114334 DEmdeg 20.70533421
PmRA 3.4 PmDE -4.4 E RAmdeg 72 E DEmdeg 71
E pmRA 1.5 E pmDE 1.5 EpRAm 1955.41 EpDEm 1955.57
Num 4 Q RAmdeg 1.9 Q DEmdeg 1.2 Q pmRA 2.0
Q pmDE 1.1 BTmag 12.186 E BTmag 0.131 VTmag 12.507
E VTmag 0.211 Prox 524 TYC HIP
CCDM RAdeg 323.27113556 DEdeg 20.70534417 EpRA 1990 1.80
EpDE 1990 1.97 E RAdeg 90.7 E DEdeg 90.2 Posflg
Corr -0.3
CCDM
Ccdm 21330+2043 RComp Comp C Note1
Note2 Discov num STF2804 DRAs DDEs
R dRAs Year 1912 Theta 106 Rho 97.1
Obs 2 Vmag 11.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15076 M ADS BDS N IDS IDS 21284N2016C
HIC