stampa
Login

Saving a selection in a list is possibile.
Create your account here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
21426+4103
BU 688 AB


Nearby doubles
3' : 21424+4105
KUI 108AB

8' : 21422+4057
DAM 231

13' : 21419+4058
MLB 30

19' : 21416+4048
S 796AB

21' : 21431+4122
COU1978

21' : 21412+4117
COU1977

35' : 21456+4110
TDT3144

37' : 21396+4049
MLB 29

41' : 21408+4027
TDT3102

43' : 21417+4022
TDT3111

43' : 21431+4021
TDT3121

50' : 21458+4029
ES 1693

54' : 21395+4144
BU 449AB

57' : 21461+4143
TDT3148

66' : 21409+4205
TDT3104

69' : 21456+4202
TDT3143

69' : 21365+4105
TDT3055

71' : 21473+4148
A 404AB

72' : 21380+4153
A 402

73' : 21373+4145
GRV 486

75' : 21369+4025
DRS 20

75' : 21361+4048
TDT3051

76' : 21454+3955
SEI1534

76' : 21398+4211
TDT3094

78' : 21494+4058
TDT3178

84' : 21393+3948
KPP4241



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.

21426+4103 BU 688 AB

 
 
21h 42m 33.41s +41° 02' 51.0" P.A. 198.00 sep 0.4 mag 8.10,8.62 Sp F2V dist. 120.48 pc (393.01 l.y.)
 
 
Coord 2000 21426+4103 Discov num BU  688 Comp AB Coord arcsec 2000 21 42 33.41 +41 02 51.0
Date first 1877 Date last 2018 Obs 80
Pa first 209 Pa last 197.8 P.A. Now (θ) 198.5°
Sep first 0.3 Sep last 0.406 Sep. Now (ρ) 0.425"
Mag pri 8.10 Mag sec 8.62 delta mag (ΔM) 0.52 Spectral class F2V (yellow-white)
Pri motion ra +026 Sec motion ra +026
Pri motion dec -001 Sec motion dec -001
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
21426+4103 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 51212 21 42 33 +41 02 51 BU 688 AB 2018 80 198 0.4 8.10 8.62 0.52 Y <===
Show HD 206656 51212 21 42 33 +41 02 51 BU 688 AB,C 2014 6 30 27.0 7.63 11.90 4.27
Show 51212 21 42 33 +41 02 51 FOX 9036 AB,D 2014 5 306 46.7 8.85 13.78 4.93
Quadruple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 51212 HIP 107177 Tycho2 3188-00957-1
HD 206656 GC 30402 ADS 15251 BD BD+40 4617
Distance 120.48 Distance ly 393.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)106.9y Periastron (T)1947.53y Semi-major axis (a)0.673a
Eccentricity (e)0.986 Inclination (i)95.9° Longitude of periastron (ω)106.7°
Node (Ω)182.8° Notesn ReferenceJte2018
Equinox2000 Last observation2017 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 201.9 0.403
2001 201.7 0.406
2002 201.6 0.409
2003 201.4 0.412
2004 201.2 0.414
2005 201.1 0.417
2006 200.9 0.419
2007 200.8 0.421
2008 200.6 0.422
2009 200.5 0.424
2010 200.4 0.425
2011 200.2 0.427
2012 200.1 0.428
2013 199.9 0.429
2014 199.8 0.429
2015 199.6 0.430
2016 199.5 0.430
2017 199.4 0.430
2018 199.2 0.429
2019 199.1 0.429
2020 198.9 0.428
2021 198.8 0.427
2022 198.6 0.426
2023 198.5 0.425
2024 198.4 0.423
2025 198.2 0.421
2026 198.1 0.419
2027 197.9 0.416
2028 197.8 0.413
2029 197.6 0.410
2030 197.4 0.407


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


 
  


wds21426%2B4103b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21426+4103 BU 688 AB : NOTES
 
 
discov_num notes refcode
BU 688 See KUI 108 note (21424+4105).
Only elements P and T have been amended by Starikova (1984) from the Sta1984
orbit of Baize (1981). Baz1981a
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 8.73 +/- 5.21, 3.07, and 1.35 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1981a orb - Baize, P. 1981A&AS...44..129B
Baz1981a A&AS 44, 129, 1981
Jte2018 orb - Josties, J., Mason, B. 2018IAUDS.196....1J
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Sta1984 orb - Starikova, G.A. 1984ATsir1325....4S
Sta1984 Astron. Tsirk. #1325, 4, 1984
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 FOX Fox, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21426+4103 BU 688 AB 2007 71 202 0.4 8.10 8.62 F2V NOD 214233.41+410251.0
21426+4103 BU 688 AB 2008 74 200 0.4 8.10 8.62 F2V NOD 214233.41+410251.0
21426+4103 BU 688 AB 2015 73 194 0.6 8.10 8.62 F2V NO 214233.41+410251.0
21426+4103 BU 688 AB 2016 74 198 0.5 8.10 8.62 F2V NO 214233.41+410251.0
21426+4103 BU 688 AB 2018 80 199 0.4 8.10 8.62 F2V NO 214233.41+410251.0

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

 
 
WDS 21426+4103 BU 688 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21426+4103 BU 688 AB : MEASURES
 
 
No records found.

 
 
WDS 21426+4103 : VIRTUAL EYEPIECE
 
 

21426+4103 BU 688A mag 8.1 Sp F2V 21426+4103 BU 688B sep 0.4 P.A. 193.60 mag 8.62 21426+4103 BU 688C sep 25.6 P.A. 23.10 mag 11.9 21426+4103 FOX9036D sep 39.6 P.A. 314.10 mag 13.78 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 21426+4103 : ALADIN DSS IMAGE @ 21h 42m 33.41s +41° 02' 51.0"
 
 
 
 
WDS 21426+4103 BU 688 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21426+4103 BU 688AB distance=0' 21424+4105 KUI 108AB distance=3' 21424+4105 ARY 129AB,C distance=3' 21422+4057 DAM 231 distance=8' 21419+4058 MLB 30 distance=13' 21416+4048 S 796AB distance=19' 21416+4048 S 796AC distance=19' 21416+4048 FYM 112AD distance=19' 21416+4048 FYM 112AE distance=19' 21416+4048 FYM 112AF distance=19' 21431+4122 COU1978 distance=21' 21412+4117 COU1977 distance=21' 21456+4110 TDT3144 distance=35' 21396+4049 MLB 29 distance=37' 21408+4027 TDT3102 distance=41' 21417+4022 TDT3111 distance=43' 21431+4021 TDT3121 distance=43' 21458+4029 ES 1693 distance=50' 21395+4144 BU 449AB distance=54' 21395+4144 STT 447AC distance=54' 21395+4144 BU 449AD distance=54' 21395+4144 STT 447AE distance=54' 21395+4144 ABH 148AH distance=54' 21395+4144 ABH 148AI distance=54' 21395+4144 ABH 148AJ distance=54' 21395+4144 ABH 148AK distance=54' 21395+4144 ABH 148AG distance=54' 21395+4144 FOX 262EF distance=54' 21461+4143 TDT3148 distance=57' 21409+4205 TDT3104 distance=66' 21456+4202 TDT3143 distance=69' 21365+4105 TDT3055 distance=69' 21473+4148 A 404AB distance=71' 21473+4148 A 404AC distance=71' 21380+4153 A 402 distance=72' 21373+4145 GRV 486 distance=73' 21369+4025 DRS 20 distance=75' 21361+4048 TDT3051 distance=75' 21454+3955 SEI1534 distance=76' 21398+4211 TDT3094 distance=76' 21494+4058 TDT3178 distance=78' 21393+3948 KPP4241 distance=84' 21426+4226 BU 1505BC distance=84' 21426+4226 STF2820AB distance=84' 21426+4226 BU 1505AC distance=84' 21354+4128 GRV 480 distance=84' 21458+3945 MLB 902 distance=85' 21450+3942 GRV 499 distance=85' 21399+3941 A 1446 distance=88' 21498+4033 TDT3183 distance=88' 21363+4012 AG 273 distance=88' 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 21426+4103 BU 688 AB 198 0.4
Show 21426+4103 FOX9036 AB,D 306 46.7
Show 21426+4103 BU 688 AB,C 30 27.0
Show 21424+4105 KUI 108 AB 14 0.2 3
Show 21424+4105 ARY 129 AB,C 132 145.5 3
Show 21422+4057 DAM 231 292 8.9 8
Show 21419+4058 MLB 30 228 9.1 13
Show 21416+4048 S 796 AB 233 58.2 19
Show 21416+4048 S 796 AC 282 132.4 19
Show 21416+4048 FYM 112 AD 163 70.0 19
Show 21416+4048 FYM 112 AE 143 73.8 19
Show 21416+4048 FYM 112 AF 305 55.0 19
Show 21431+4122 COU1978 87 0.2 21
Show 21412+4117 COU1977 97 1.2 21
Show 21456+4110 TDT3144 193 2.2 35
Show 21396+4049 MLB 29 340 6.8 37
Show 21408+4027 TDT3102 25 1.4 41
Show 21417+4022 TDT3111 296 2.7 43
Show 21431+4021 TDT3121 157 1.7 43
Show 21458+4029 ES 1693 34 7.4 50
Show 21395+4144 BU 449 AB 14 6.0 54
Show 21395+4144 STT 447 AC 176 14.0 54
Show 21395+4144 BU 449 AD 248 18.9 54
Show 21395+4144 STT 447 AE 43 29.1 54
Show 21395+4144 ABH 148 AH 263 74.4 54
Show 21395+4144 ABH 148 AI 271 92.9 54
Show 21395+4144 ABH 148 AJ 95 71.2 54
Show 21395+4144 ABH 148 AK 49 74.7 54
Show 21395+4144 ABH 148 AG 337 33.8 54
Show 21395+4144 FOX 262 EF 46 41.7 54
Show 21461+4143 TDT3148 18 0.4 57
Show 21409+4205 TDT3104 233 2.2 66
Show 21456+4202 TDT3143 34 0.5 69
Show 21365+4105 TDT3055 247 0.5 69
Show 21473+4148 A 404 AB 100 3.8 71
Show 21473+4148 A 404 AC 294 14.0 71
Show 21380+4153 A 402 47 0.8 72
Show 21373+4145 GRV 486 348 28.0 73
Show 21369+4025 DRS 20 58 7.0 75
Show 21361+4048 TDT3051 275 0.6 75
Show 21454+3955 SEI1534 189 27.8 76
Show 21398+4211 TDT3094 229 2.9 76
Show 21494+4058 TDT3178 251 0.6 78
Show 21393+3948 KPP4241 95 4.0 84
Show 21426+4226 BU 1505 BC 177 21.4 84
Show 21426+4226 STF2820 AB 230 16.0 84
Show 21426+4226 BU 1505 AC 200 33.6 84
Show 21354+4128 GRV 480 17 15.1 84
Show 21458+3945 MLB 902 327 5.6 85
Show 21450+3942 GRV 499 170 67.4 85
Show 21399+3941 A 1446 40 1.3 88

 
 
WDS 21426+4103 : COMPONENTS
 
 
  A B C
B pa=193.6°
sep=0.40"
 
C pa=23.1°
sep=25.59"
pa=23.0°
sep=25.98"
 
D pa=314.1°
sep=39.64"
pa=314.6°
sep=39.84"
pa=276.0°
sep=38.70"
 
 
21426+4103 A
 
 
Coord arcsec 2000 214233.41+410251.0 Mag 8.1 Spectral class F2V (yellow-white) PmRA 26.00
PmDE -1.0 SAO 51212 HIP 107177 Tycho2 3188-00957-1
HD 206656 GC 30402 BD BD+40 4617
Tycho2
Tycho2 3188-00957-1 Pflag RAmdeg 325.63927035 DEmdeg 41.04744532
PmRA 26.2 PmDE -0.9 E RAmdeg 4 E DEmdeg 4
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.43 EpDEm 1991.46
Num 11 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.3
Q pmDE 0.9 BTmag 7.995 E BTmag 0.016 VTmag 7.626
E VTmag 0.010 Prox 999 TYC T HIP 107177
CCDM AB RAdeg 325.63919083 DEdeg 41.04744750 EpRA 1990 1.73
EpDE 1990 1.70 E RAdeg 4.4 E DEdeg 4.4 Posflg P
Corr 0.1
SAO
SAO 51212 DelFlag RA1950 PmRA1950 0.0028
DE1950 PmDE1950 0.007 Vmag 7.5 SpType F0
Double code Source 70 CatNum 30402 DM BD+40 4617
DMcomp BDsup HD 206656 M HD 0
GC 30402 RA1950rad 5.67467971 DE1950rad 0.71241485 PmRA2000 0.003
PmDE2000 0.003
Hipparcos
Catalog H HIP 107177 Proxy H RAhms 21 42 33.41
DEdms +41 02 51.0 Vmag 7.55 VarFlag R Vmag H
RAdeg 325.639 DEdeg 41.0475 AstroRef A Plx 8.82
CCDM 21426+4103 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 203 Rho 0.369 HD 206656 BD BD+40 4617
CD CP Dm number +40 4617 VIred 0.41
SpType F0 R SpType Coord arcsec 2000 214233.41+410251.0
Hipparcos 2
HIP 107177 Sn 15 So 3 Nc 2
RArad 5.683476401 DErad 0.7164139358 Plx 8.3 PmRA 26.18
PmDE 0.04 E RArad 0.44 E DErad 0.57 E Plx 0.71
E pmRA 0.49 E pmDE 0.72 Hpmag 7.6387 E Hpmag 0.001
SHp 0.012 VA 0 BV 0.365 E BV 0.01
VI 0.43
CCDM
Ccdm 21426+4103 RComp Comp A Note1
Note2 Discov num DRAs -2.60 DDEs -10.0
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.3 Sp F0 PmNote *
PmRA 21 PmDE -12 Dm number +40 4617 Cat1 BD
Name2 +40 2248 Cat2 AGK2/3 HD 206656 M HD
ADS BDS A15251 M ADS BDS N IDS IDS 21385N4035A
HIC 107177
 
 
21426+4103 B
 
 
Coord arcsec 2000 214233.40+410250.6 Mag 8.62 PmRA 26.00 PmDE -1.0
Calc delta mag 0.52 Calc coord yes
CCDM
Ccdm 21426+4103 RComp Comp B Note1 *
Note2 Discov num BU 688 DRAs DDEs
R dRAs Year 1959 Theta 210 Rho 0.3
Obs 24 Vmag 8.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15251 M ADS BDS N N IDS IDS 21385N4035B
HIC 107177
 
 
21426+4103 C
 
 
Coord arcsec 2000 214234.30+410314.5 Mag 11.9 PmRA -2.00 PmDE -8.0
Calc delta mag 3.8 Calc coord yes
CCDM
Ccdm 21426+4103 RComp Comp C Note1
Note2 Discov num BU 688 DRAs DDEs
R dRAs Year 1914 Theta 034 Rho 29.3
Obs 1 Vmag 11.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15251 M ADS BDS N IDS IDS 21385N4035C
HIC
 
 
21426+4103 D
 
 
Coord arcsec 2000 214230.90+410318.6 Mag 13.78 PmRA -8.00 PmDE -5.0
Calc delta mag 5.68 Calc coord yes