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Doubles in session


Current system
21420+1856
LBU 2 Aa,Ab


Nearby doubles
9' : 21426+1900
HO 165

19' : 21429+1843
SLW1251

25' : 21409+1915
HDS3086

35' : 21399+1914
COU 330

50' : 21385+1902
TDT3077AB

52' : 21384+1858
TDT3075

53' : 21419+1949
CBL 533

64' : 21403+1955
SLW1246

66' : 21427+1751
DAM 660

67' : 21424+1750
HU 373AB

69' : 21426+1749
CBL 95

72' : 21451+1954
RAO 466

73' : 21466+1929
COU 431

74' : 21368+1858
TDT3062

75' : 21399+2005
UC 4521

77' : 21368+1915
BRT2498

82' : 21417+1735
OSO 153

85' : 21362+1912
TDT3052

88' : 21461+2001
HU 376

89' : 21420+1728
KPP3372

91' : 21479+1824
BPM2409

104' : 21477+1755
LDS4909

105' : 21349+1923
TDT3041

108' : 21391+2036
STT 444

110' : 21397+2041
GMC 23

114' : 21393+2043
STT 445



Selections
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Binary Systems
Triple Systems
Quadruple Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

21420+1856 LBU 2 Aa,Ab

 
 
21h 41m 59.91s +18° 56' 19.7" P.A. 22.00 sep 0.6 mag 8.00,9.50 Sp G7III dist. 179.86 pc (586.7 l.y.)
 
 
Coord 2000 21420+1856 Discov num LBU   2 Comp Aa,Ab Coord arcsec 2000 21 41 59.91 +18 56 19.7
Date first 1985 Date last 2016 Obs 2
Pa first 42 Pa last 22.1 P.A. Now (θ) 22.1°
Sep first 0.9 Sep last 0.561 Sep. Now (ρ) 0.561"
Mag pri 8.00 Mag sec 9.50 delta mag (ΔM) 1.5 Spectral class G7III (yellow)
Pri motion ra -036 Sec motion ra
Pri motion dec -047 Sec motion dec
Notes N W (See Notes, )
Nature of this double is uncertain.
 
 
21420+1856 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 107334 21 41 60 +18 56 20 LBU 2 Aa,Ab 2016 2 22 0.6 8.00 9.50 1.50 <===
Show HD 206485 107334 21 41 60 +18 56 20 STF 2818 AB 2015 21 24 26.8 7.38 10.24 2.86
Show 107334 21 41 60 +18 56 20 FOX 9055 AC 2015 4 267 76.5 7.38 13.78 6.40
Show 21 41 54 +18 56 15 DAM 16 CD 2016 5 90 3.5 13.30 14.30 1.00
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus SAO 107334 HIP 107126 Tycho2 1673-00088-1
Gaia DR2 1786382524538594176 HD 206485 BD BD+18 4841 Distance 179.86
Distance ly 586.7
 
 
WDS 21420+1856 LBU 2 Aa,Ab : NOTES
 
 
discov_num notes refcode
LBU 2 Aa,Ab: A 1999 measure of 21426+1900 HO 165 by Mason et al. was WSI2000b
erroneously listed under this pair.
STF2818 Lewis measure erroneously listed as 21426+1900L 50AC, companion L__1899a
to HO 165.
 
 
REFERENCES
 
 
refcode metd author reference
L__1899a Ma j Lewis, T. 1899RGOO...........
L__1899a Greenwich Observations, 1899 (data also in MNRAS 60, 494, 1900) 1900MNRAS..60..494.
WSI2000b Su j Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L., 2000AJ....120.1120M
WSI2000b Hennessy, G.S., Hall, D.M., Urban, S.E., et al.
WSI2000b AJ 120, 1120, 2000
 
 
DISCOVERER
 
 
idgroup discov author
1 DAM Damm, F.
403 FOX Fox, P.
414 LBU Le Beau, J.
452 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
21420+1856 LBU 2 Aa,Ab 1985 1 42 0.9 8.00 9.50 G7III N 214159.91+185619.7
21420+1856 LBU 2 Aa,Ab 2016 2 22 0.6 8.00 9.50 G7III N W 214159.91+185619.7

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

 
 
WDS 21420+1856 LBU 2 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21420+1856 LBU 2 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 21420+1856 : VIRTUAL EYEPIECE
 
 

21420+1856 STF2818A mag 7.38 Sp G7III 21420+1856 LBU 2Ab sep 0.6 P.A. 21.00 mag 9.5 21420+1856 STF2818B sep 26.5 P.A. 22.80 mag 10.24 21420+1856 DAM 16C sep 77.3 P.A. 266.70 mag 13.3 21420+1856 DAM 16D sep 74.0 P.A. 266.60 mag 14.3 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 21420+1856 : ALADIN DSS IMAGE @ 21h 41m 59.91s +18° 56' 19.7"
 
 
 
 
WDS 21420+1856 LBU 2 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21420+1856 LBU 2Aa,Ab distance=1' 21420+1856 STF2818AB distance=1' 21420+1856 FOX9055AC distance=1' 21420+1856 DAM 16CD distance=2' 21426+1900 HO 165 distance=9' 21429+1843 SLW1251 distance=19' 21409+1915 HDS3086 distance=25' 21399+1914 COU 330 distance=35' 21385+1902 TDT3077AB distance=50' 21385+1902 SKF 292AB,C distance=50' 21384+1858 TDT3075 distance=52' 21419+1949 CBL 533 distance=53' 21403+1955 SLW1246 distance=64' 21427+1751 DAM 660 distance=66' 21424+1750 HU 373AB distance=67' 21424+1750 BU 691AC distance=67' 21424+1750 BU 691AE distance=67' 21424+1750 FOX9057CD distance=67' 21426+1749 CBL 95 distance=69' 21451+1954 RAO 466 distance=72' 21466+1929 COU 431 distance=73' 21368+1858 TDT3062 distance=74' 21399+2005 UC 4521 distance=75' 21368+1915 BRT2498 distance=77' 21417+1735 OSO 153 distance=82' 21362+1912 TDT3052 distance=85' 21461+2001 HU 376 distance=88' 21420+1728 KPP3372 distance=89' 21479+1824 BPM2409 distance=91' 21477+1755 LDS4909 distance=104' 21349+1923 TDT3041 distance=105' 21391+2036 STT 444 distance=108' 21397+2041 GMC 23 distance=110' 21393+2043 STT 445 distance=114' 21433+2046 J 852 distance=114' 21344+1816 BPM2393 distance=115' 21440+1705 LDS6358 distance=117' 21347+1953 TDT3040 distance=119' 21417+2100 UC 4531 distance=124' 21356+1731 BPM2398 distance=125' 21359+1723 BPM2399 distance=128' 21427+2102 J 614 distance=128' 21505+1953 LDS4916 distance=133' 21514+1916 WSI 24 distance=135' 21457+2100 UC 4553 distance=135' 21379+2102 YR 30 distance=139' 21323+1848 BRT2497 distance=139' 21517+1918 BU 1506BC distance=139' 21517+1918 STF2834AB distance=139' 21517+1918 BU 1506AC distance=139' 21334+2018 J 613 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 21420+1856 LBU 2 Aa,Ab 22 0.6 1
Show 21420+1856 STF2818 AB 24 26.8 1
Show 21420+1856 FOX9055 AC 267 76.5 1
Show 21420+1856 DAM 16 CD 90 3.5 2
Show 21426+1900 HO 165 63 0.8 9
Show 21429+1843 SLW1251 328 123.9 19
Show 21409+1915 HDS3086 66 1.1 25
Show 21399+1914 COU 330 190 0.5 35
Show 21385+1902 TDT3077 AB 294 0.4 50
Show 21385+1902 SKF 292 AB,C 91 16.2 50
Show 21384+1858 TDT3075 250 1.0 52
Show 21419+1949 CBL 533 123 64.8 53
Show 21403+1955 SLW1246 345 155.2 64
Show 21427+1751 DAM 660 318 0.8 66
Show 21424+1750 HU 373 AB 300 0.9 67
Show 21424+1750 BU 691 AC 249 84.3 67
Show 21424+1750 BU 691 AE 80 118.8 67
Show 21424+1750 FOX9057 CD 238 14.7 67
Show 21426+1749 CBL 95 222 37.1 69
Show 21451+1954 RAO 466 249 0.6 72
Show 21466+1929 COU 431 184 0.5 73
Show 21368+1858 TDT3062 151 0.6 74
Show 21399+2005 UC 4521 35 12.3 75
Show 21368+1915 BRT2498 268 5.0 77
Show 21417+1735 OSO 153 206 18.4 82
Show 21362+1912 TDT3052 197 1.7 85
Show 21461+2001 HU 376 14 1.4 88
Show 21420+1728 KPP3372 244 2.0 89
Show 21479+1824 BPM2409 309 97.5 91
Show 21477+1755 LDS4909 66 32.7 104
Show 21349+1923 TDT3041 350 0.8 105
Show 21391+2036 STT 444 277 8.0 108
Show 21397+2041 GMC 23 342 10.5 110
Show 21393+2043 STT 445 120 1.0 114
Show 21433+2046 J 852 92 4.2 114
Show 21344+1816 BPM2393 24 94.5 115
Show 21440+1705 LDS6358 346 64.1 117
Show 21347+1953 TDT3040 23 0.9 119
Show 21417+2100 UC 4531 213 69.8 124
Show 21356+1731 BPM2398 96 82.6 125
Show 21359+1723 BPM2399 230 92.5 128
Show 21427+2102 J 614 307 2.0 128
Show 21505+1953 LDS4916 298 198.7 133
Show 21514+1916 WSI 24 24 14.2 135
Show 21457+2100 UC 4553 184 63.7 135
Show 21379+2102 YR 30 340 0.1 139
Show 21323+1848 BRT2497 187 1.8 139
Show 21517+1918 BU 1506 BC 118 29.9 139
Show 21517+1918 STF2834 AB 298 4.3 139
Show 21517+1918 BU 1506 AC 116 29.7 139
Show 21334+2018 J 613 222 5.1 146

 
 
WDS 21420+1856 : COMPONENTS
 
 
  A Ab B C
Ab pa=21.0°
sep=0.56"
 
B pa=22.8°
sep=26.52"
pa=22.9°
sep=25.96"
 
C pa=266.7°
sep=77.31"
pa=266.4°
sep=77.54"
pa=251.8°
sep=92.10"
 
D pa=266.6°
sep=74.04"
pa=266.2°
sep=74.28"
pa=251.1°
sep=89.00"
pa=89.9°
sep=3.27"
 
 
21420+1856 A
 
 
Name HD 206485 Coord arcsec 2000 214159.91+185619.7 Mag 7.38 Spectral class G7III (yellow)
PmRA -36.00 PmDE -46.0 SAO 107334 HIP 107126
Tycho2 1673-00088-1 HD 206485 BD BD+18 4841
Tycho2
Tycho2 1673-00088-1 Pflag RAmdeg 325.49965110 DEmdeg 18.93882286
PmRA -36.2 PmDE -46.5 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.1 EpRAm 1991.24 EpDEm 1991.42
Num 12 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 0.9 BTmag 8.633 E BTmag 0.017 VTmag 7.385
E VTmag 0.010 Prox 255 TYC T HIP 107126
CCDM RAdeg 325.49973972 DEdeg 18.93892833 EpRA 1990 1.66
EpDE 1990 1.83 E RAdeg 5.0 E DEdeg 4.9 Posflg
Corr -0.3
SAO
SAO 107334 DelFlag RA1950 PmRA1950 -0.0024
DE1950 PmDE1950 -0.059 Vmag 7.2 SpType K0
Double code Source 28 CatNum 8846 DM BD+18 4841
DMcomp BDsup HD 206485 M HD 0
GC RA1950rad 5.67081101 DE1950rad 0.32656448 PmRA2000 -0.0024
PmDE2000 -0.063
Hipparcos
Catalog H HIP 107126 Proxy RAhms 21 41 59.94
DEdms +18 56 20.2 Vmag 7.26 VarFlag R Vmag H
RAdeg 325.5 DEdeg 18.9389 AstroRef Plx 5.05
CCDM 21420+1856 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 206485 BD BD+18 4841
CD CP Dm number +18 4841 VIred 0.99
SpType G7III... R SpType Coord arcsec 2000 214159.94+185620.2
Hipparcos 2
HIP 107126 Sn 5 So 0 Nc 1
RArad 5.6810422929 DErad 0.3305468258 Plx 5.56 PmRA -35.76
PmDE -46.1 E RArad 0.47 E DErad 0.59 E Plx 0.73
E pmRA 0.58 E pmDE 0.57 Hpmag 7.4237 E Hpmag 0.0013
SHp 0.011 VA 0 BV 1.063 E BV 0.01
VI 1.03
CCDM
Ccdm 21420+1856 RComp Comp A Note1
Note2 Discov num DRAs -0.13 DDEs 19.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.7 Sp K0 PmNote *
PmRA -42 PmDE -40 Dm number +18 4841 Cat1 BD
Name2 +18 2209 Cat2 AGK2/3 HD 206485 M HD
ADS BDS B11177 M ADS BDS N IDS IDS 21373N1829A
HIC 107126
 
 
21420+1856 Ab
 
 
Coord arcsec 2000 214159.92+185620.2 Mag 9.5 Calc delta mag 1.5 Calc coord yes
 
 
21420+1856 B
 
 
Coord arcsec 2000 214200.64+185644.1 Mag 10.24 PmRA 0.00 PmDE -3.0
Calc delta mag 2.24 Calc coord yes
CCDM
Ccdm 21420+1856 RComp Comp B Note1
Note2 Discov num STF2818 DRAs 0.59 DDEs 43.6
R dRAs 91 Year 1934 Theta 022 Rho 22.3
Obs 7 Vmag 9.9 Sp PmNote *
PmRA -8 PmDE 8 Dm number Cat1
Name2 +18 2210 Cat2 AGK2/3 HD M HD
ADS BDS B11177 M ADS BDS N N IDS IDS 21373N1829B
HIC
 
 
21420+1856 C
 
 
Coord arcsec 2000 214154.47+185615.3 Coord calc 214154.47+185615.3 Mag 13.3 PmRA -49.00
PmDE 5.0 Calc delta mag 5.3
 
 
21420+1856 D
 
 
Coord arcsec 2000 214154.70+185615.3 Mag 14.3 Calc delta mag 6.3 Calc coord yes