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Doubles in session


Current system
21423+0555
HU 280
HD 206512


Nearby doubles
32' : 21417+0625
HU 278AB

35' : 21445+0607
HDS3096

44' : 21395+0544
FMR 164

46' : 21399+0623
OSO 151AB

47' : 21442+0518
GWP3090

48' : 21395+0534
CVR 912

50' : 21403+0516
SKF 484

51' : 21404+0514
DBR 329

56' : 21441+0506
TDS1144

57' : 21385+0546
HJ 941

62' : 21462+0536
HJ 3057

65' : 21465+0611
GRV 502

69' : 21436+0700
HJ 3053

70' : 21385+0513
BAL2981

73' : 21377+0528
J 1406

74' : 21465+0632
STT 450

74' : 21419+0708
HJ 3050

75' : 21465+0635
UC 4556

80' : 21379+0510
SLW1245

80' : 21441+0709
STTA222

81' : 21377+0637
STFA 56AB

81' : 21423+0715
HU 279

81' : 21369+0604
GWP3078

85' : 21376+0643
STT 443AB

89' : 21386+0704
SKF2553

92' : 21480+0521
BRT2293



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.

21423+0555 HU 280 (HD 206512)

 
 
21h 42m 18.45s +05° 54' 43.0" sep 0.1 mag 8.33,8.50 Sp A5 dist. 195.31 pc (637.1 l.y.)
 
 
Coord 2000 21423+0555 Discov num HU  280 Comp Coord arcsec 2000 21 42 18.45 +05 54 43.0
Date first 1900 Date last 2021 Obs 77
Pa first 318 Pa last 0.2 P.A. Now (θ) 34.6°
Sep first 0.2 Sep last 0.059 Sep. Now (ρ) 0.154"
Mag pri 8.33 Mag sec 8.50 delta mag (ΔM) 0.17 Spectral class A5 (white)
Pri motion ra +013 Sec motion ra
Pri motion dec +023 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 206512 Constellation Pegasus SAO 127003 HIP 107153
Tycho2 0555-00042-1 Gaia DR2 2700223368942878208 HD 206512 ADS 15236
BD BD+05 4851 Distance 195.31 Distance ly 637.1
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)170.43y Periastron (T)1794.63y Semi-major axis (a)0.214a
Eccentricity (e)0.054 Inclination (i)46.3° Longitude of periastron (ω)315.3°
Node (Ω)315.1° Notesn ReferenceUSN2006a
Equinox2000 Last observation2000 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 341.0 0.192
2001 342.9 0.190
2002 344.7 0.188
2003 346.6 0.187
2004 348.6 0.185
2005 350.5 0.183
2006 352.6 0.180
2007 354.6 0.178
2008 356.8 0.176
2009 358.9 0.174
2010 1.2 0.172
2011 3.4 0.170
2012 5.8 0.168
2013 8.2 0.166
2014 10.6 0.165
2015 13.1 0.163
2016 15.6 0.161
2017 18.2 0.160
2018 20.9 0.158
2019 23.5 0.157
2020 26.3 0.156
2021 29.0 0.155
2022 31.8 0.154
2023 34.6 0.154
2024 37.5 0.153
2025 40.3 0.153
2026 43.1 0.153
2027 46.0 0.153
2028 48.8 0.154
2029 51.6 0.154
2030 54.4 0.155


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


 
  


wds21423%2B0555b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)80.77y± 2.52 Periastron (T)2020.46y± 0.15 Semi-major axis (a)0.1778a± 0.0074
Eccentricity (e)0.721± 0.024 Inclination (i)51.8°± 2.2 Longitude of periastron (ω)103.3°± 2.9
Node (Ω)198.2°± 4.9 Notesn ReferenceTok2020e
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 158.8 0.196
2001 160.4 0.194
2002 162.0 0.191
2003 163.7 0.189
2004 165.4 0.186
2005 167.2 0.182
2006 169.1 0.178
2007 171.0 0.174
2008 173.0 0.169
2009 175.2 0.164
2010 177.5 0.158
2011 180.1 0.151
2012 182.9 0.144
2013 186.0 0.135
2014 189.5 0.125
2015 193.8 0.114
2016 199.1 0.100
2017 206.2 0.085
2018 216.8 0.066
2019 236.4 0.046
2020 280.6 0.031
2021 336.0 0.039
2022 3.5 0.057
2023 17.9 0.073
2024 27.5 0.085
2025 34.9 0.095
2026 41.1 0.103
2027 46.4 0.110
2028 51.1 0.116
2029 55.4 0.121
2030 59.4 0.125


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


 
  


wds21423%2B0555c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21423+0555 HU 280 (HD 206512) : NOTES
 
 
discov_num notes refcode
HU 280 Distance in measure given by ADS for 1908.2 (6n, Bry) needs correction.
It represents two annual means: 0.18" in 1907 and 0.30" in 1908; the
latter includes values 0.52", 0.19", 0.18", the first of which must be
rejected, the observer having even noted in addition "not separated".
The same kind of error exists for some other objects on the same night
(BU 151 and HU 371, for example). Mlr1954a
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 2.51 +/- 1.89, 3.75, and 1.82 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Mlr1954a Mc - Muller, P. 1954AJ.....59..388M
Mlr1954a +orb AJ 59, 388, 1954
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
USN2006a orb - Brendley, M. & Hartkopf, W.I. 2006IAUDS.160Q...1B
USN2006a Inf. Circ. 160, 1, 2006
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21423+0555 HU 280 2000 70 164 0.2 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2006 71 355 0.2 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2014 72 183 0.1 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2017 73 32 0.1 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2019 73 248 0.0 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2020 75 334 0.0 8.33 8.50 A5 NO 214218.45+055443.0
21423+0555 HU 280 2021 77 0 0.1 8.33 8.50 A5 NO 214218.45+055443.0

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

 
 
WDS 21423+0555 HU 280 (HD 206512) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21423+0555 HU 280 (HD 206512) : MEASURES
 
 
No records found.

 
 
WDS 21423+0555 (HD 206512) : VIRTUAL EYEPIECE
 
 

21423+0555 HU 280A mag 8.33 Sp A5 21423+0555 HU 280B sep 0.1 P.A. 0.20 mag 8.5 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 21423+0555 (HD 206512) : ALADIN DSS IMAGE @ 21h 42m 18.45s +05° 54' 43.0"
 
 
 
 
WDS 21423+0555 HU 280 (HD 206512) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21423+0555 HU 280 distance=0' 21417+0625 HU 278AB distance=32' 21417+0625 HU 278AC distance=32' 21445+0607 HDS3096 distance=35' 21395+0544 FMR 164 distance=44' 21399+0623 OSO 151AB distance=46' 21399+0623 OSO 151AC distance=46' 21442+0518 GWP3090 distance=47' 21395+0534 CVR 912 distance=48' 21403+0516 SKF 484 distance=50' 21404+0514 DBR 329 distance=51' 21441+0506 TDS1144 distance=56' 21385+0546 HJ 941 distance=57' 21462+0536 HJ 3057 distance=62' 21465+0611 GRV 502 distance=65' 21436+0700 HJ 3053 distance=69' 21385+0513 BAL2981 distance=70' 21377+0528 J 1406 distance=73' 21465+0632 STT 450 distance=74' 21419+0708 HJ 3050 distance=74' 21465+0635 UC 4556 distance=75' 21379+0510 SLW1245 distance=80' 21441+0709 STTA222 distance=80' 21377+0637 STFA 56AB distance=81' 21377+0637 STFA 56AC distance=81' 21423+0715 HU 279 distance=81' 21369+0604 GWP3078 distance=81' 21376+0643 STT 443AB distance=85' 21376+0643 FYM 46AC distance=85' 21386+0704 SKF2553 distance=89' 21480+0521 BRT2293 distance=92' 21396+0431 HEI 822 distance=94' 21368+0643 SLN 41 distance=96' 21483+0518 BRT2294 distance=97' 21439+0419 NSN 6 distance=99' 21450+0419 BAL2564 distance=104' 21489+0523 HU 281 distance=104' 21492+0543 GIC 172 distance=104' 21420+0408 J 1790 distance=106' 21462+0423 CVR 918 distance=109' 21469+0722 J 202 distance=111' 21476+0431 CVR 920 distance=115' 21502+0558 CBL 600 distance=118' 21504+0514 BRT2192 distance=128' 21470+0408 STE 14AB distance=128' 21425+0342 CVR 916 distance=133' 21403+0344 STT 446 distance=134' 21512+0546 HJ 3061 distance=135' 21341+0651 REE 1 distance=135' 21514+0525 BAL2983 distance=139' 21439+0812 UC 4540 distance=140' 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 21423+0555 HU 280 0.1
Show 21417+0625 HU 278 AB 202 3.0 32
Show 21417+0625 HU 278 AC 233 18.5 32
Show 21445+0607 HDS3096 79 1.3 35
Show 21395+0544 FMR 164 88 148.3 44
Show 21399+0623 OSO 151 AB 101 3.8 46
Show 21399+0623 OSO 151 AC 269 15.8 46
Show 21442+0518 GWP3090 68 12.6 47
Show 21395+0534 CVR 912 105 24.1 48
Show 21403+0516 SKF 484 23 14.9 50
Show 21404+0514 DBR 329 304 5.5 51
Show 21441+0506 TDS1144 115 1.1 56
Show 21385+0546 HJ 941 310 33.3 57
Show 21462+0536 HJ 3057 7 21.2 62
Show 21465+0611 GRV 502 204 30.4 65
Show 21436+0700 HJ 3053 190 24.3 69
Show 21385+0513 BAL2981 265 4.3 70
Show 21377+0528 J 1406 207 2.5 73
Show 21465+0632 STT 450 255 44.3 74
Show 21419+0708 HJ 3050 37 20.9 74
Show 21465+0635 UC 4556 339 4.7 75
Show 21379+0510 SLW1245 42 9.9 80
Show 21441+0709 STTA222 258 87.4 80
Show 21377+0637 STFA 56 AB 349 38.7 81
Show 21377+0637 STFA 56 AC 121 85.1 81
Show 21423+0715 HU 279 356 2.5 81
Show 21369+0604 GWP3078 257 45.9 81
Show 21376+0643 STT 443 AB 348 8.1 85
Show 21376+0643 FYM 46 AC 130 86.0 85
Show 21386+0704 SKF2553 300 34.6 89
Show 21480+0521 BRT2293 310 1.4 92
Show 21396+0431 HEI 822 359 1.2 94
Show 21368+0643 SLN 41 125 3.4 96
Show 21483+0518 BRT2294 242 2.3 97
Show 21439+0419 NSN 6 339 3.8 99
Show 21450+0419 BAL2564 195 5.2 104
Show 21489+0523 HU 281 146 1.5 104
Show 21492+0543 GIC 172 126 434.7 104
Show 21420+0408 J 1790 95 2.3 106
Show 21462+0423 CVR 918 268 9.0 109
Show 21469+0722 J 202 183 3.3 111
Show 21476+0431 CVR 920 71 8.8 115
Show 21502+0558 CBL 600 253 12.0 118
Show 21504+0514 BRT2192 24 3.3 128
Show 21470+0408 STE 14 AB 328 31.4 128
Show 21425+0342 CVR 916 238 9.8 133
Show 21403+0344 STT 446 173 6.6 134
Show 21512+0546 HJ 3061 105 17.0 135
Show 21341+0651 REE 1 21 0.3 135
Show 21514+0525 BAL2983 16 6.0 139
Show 21439+0812 UC 4540 92 48.4 140

 
 
WDS 21423+0555 : COMPONENTS
 
 
  A
B pa=0.2°
sep=0.06"
 
 
21423+0555 A
 
 
Componente originario normalizzato AB Name HD 206512 Coord arcsec 2000 214218.45+055443.0 Mag 8.33
Spectral class A5 (white) PmRA 13.00 PmDE 23.0 SAO 127003
HIP 107153 Tycho2 0555-00042-1 HD 206512 BD BD+05 4851
Tycho2
Tycho2 0555-00042-1 Pflag RAmdeg 325.57685741 DEmdeg 5.91197547
PmRA -3.9 PmDE 14.0 E RAmdeg 5 E DEmdeg 6
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.46 EpDEm 1991.30
Num 9 Q RAmdeg 0.8 Q DEmdeg 0.5 Q pmRA 0.9
Q pmDE 0.5 BTmag 7.934 E BTmag 0.016 VTmag 7.616
E VTmag 0.011 Prox 999 TYC T HIP 107153
CCDM AB RAdeg 325.57686611 DEdeg 5.91194333 EpRA 1990 1.72
EpDE 1990 1.69 E RAdeg 4.6 E DEdeg 5.7 Posflg P
Corr -0.1
SAO
SAO 127003 DelFlag RA1950 PmRA1950 0.0012
DE1950 PmDE1950 0.014 Vmag 8.4 SpType A5
Double code Source 32 CatNum 10890 DM BD+05 4851
DMcomp BDsup HD 206512 M HD 0
GC RA1950rad 5.67148749 DE1950rad 0.099186 PmRA2000 0.0013
PmDE2000 0.009
Hipparcos
Catalog H HIP 107153 Proxy H RAhms 21 42 18.45
DEdms +05 54 43.0 Vmag 7.58 VarFlag R Vmag H
RAdeg 325.577 DEdeg 5.91194 AstroRef * Plx 5.92
CCDM 21423+0555 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 145 Rho 0.205 HD 206512 BD BD+05 4851
CD CP Dm number +05 4851 VIred 0.33
SpType A5 R SpType Coord arcsec 2000 214218.45+055443.0
Hipparcos 2
HIP 107153 Sn 55 So 3 Nc 2
RArad 5.6823883395 DErad 0.1031828776 Plx 5.12 PmRA -3.32
PmDE 14.38 E RArad 0.75 E DErad 0.6 E Plx 0.9
E pmRA 1.04 E pmDE 0.71 Hpmag 7.6605 E Hpmag 0.0013
SHp 0.012 VA 0 BV 0.321 E BV 0.01
VI 0.37
CCDM
Ccdm 21423+0555 RComp Comp A Note1
Note2 Discov num DRAs 0.50 DDEs -15.9
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.4 Sp A5 PmNote *
PmRA 12 PmDE 38 Dm number +05 4851 Cat1 BD
Name2 +05 3173 Cat2 AGK2/3 HD 206512 M HD
ADS BDS A15236 M ADS BDS N IDS IDS 21373N0527A
HIC 107153
 
 
21423+0555 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214218.45+055443.1 Mag 8.5 Calc delta mag 0.17
Calc coord yes
CCDM
Ccdm 21423+0555 RComp Comp B Note1 *
Note2 Discov num HU 280 DRAs DDEs
R dRAs Year 1958 Theta 270 Rho 0.2
Obs 18 Vmag 8.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15236 M ADS BDS N IDS IDS 21373N0527B
HIC 107153