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Doubles in session


Current system
21103+1008
BU 71 AC


Nearby doubles
30' : 21084+1008
BU 9010AB

32' : 21107+1038
LEP 172

37' : 21110+0933
STF2765AB

40' : 21086+0938
J 159

41' : 21121+1038
ENG 81AB

46' : 21131+1028
BU 1501

48' : 21088+1047
WAK 12

50' : 21101+0919
GWP3039

55' : 21071+1042
J 2576

62' : 21145+1000
STT 535AB

64' : 21138+1045
HJ 278

65' : 21123+1105
BPMA251

66' : 21110+1113
BPM2339

69' : 21088+1113
BPM2334

73' : 21130+1109
GWP3042

79' : 21106+1126
BPM2337

79' : 21140+1106
AG 415AB

84' : 21137+1115
BPM2345

87' : 21116+1133
LDS4869

90' : 21147+0907
CVR 890

95' : 21041+0951
GWP3034

96' : 21056+1113
BPM2322

96' : 21137+0846
UC 4412AB

97' : 21165+0936
BRT3228

101' : 21087+1145
BPM2333

102' : 21165+0924
LAF 64AB



Selections
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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.

21103+1008 BU 71 AC

 
 
21h 10m 20.47s +10° 07' 55.0" P.A. 359.00 sep 59.9 mag 4.70,12.58 Sp A9V dist. 36.3 pc (118.41 l.y.)
 
 
Coord 2000 21103+1008 Discov num BU   71 Comp AC Coord arcsec 2000 21 10 20.47 +10 07 55.0
Date first 1877 Date last 2015 Obs 20
Pa first 10 Pa last 358.5 P.A. Now (θ) 358.5°
Sep first 41.3 Sep last 59.917 Sep. Now (ρ) 59.917"
Mag pri 4.70 Mag sec 12.58 delta mag (ΔM) 7.88 Spectral class A9V (white)
Pri motion ra +049 Sec motion ra -011
Pri motion dec -152 Sec motion dec -016
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=0.931
This double is not physical.
 
 
21103+1008 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Gam Equ 126593 21 10 20 +10 07 55 KNT 5 AB 2014 36 248 0.6 4.70 8.69 3.99
Show 126593 21 10 20 +10 07 55 BU 71 AC 2015 20 359 59.9 4.70 12.58 7.88 <===
Show 126593 21 10 20 +10 07 55 STFA 54 AD 2015 26 152 335.2 4.70 6.06 1.36
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Equuleus SAO 126593 HIP 104521 Tycho2 1108-02583-1
Gaia DR2 1744662586614707072 HD 201601 HR 8097 GC 29591
ADS 14702 BD BD+09 4732 Bayer Gamma Equulei Bayer name Gam Equ
Flamsteed 5 Equulei Flamsteed name 5 Equ FK5 1555 Distance 36.3
Distance ly 118.41 Bayer greek γ Equ
 
 
WDS 21103+1008 BU 71 AC : NOTES
 
 
discov_num notes refcode
KNT 5 A: gam Equ = 5 Equ. A is an Alpha CVn-type variable. There apparently
is a long-period spectroscopic binary present.
BU 71 AC: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
AC: Rectilinear solution by Hurowitz et al. (2014). USN2014b
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
USN2014b lin - Hurowitz, J.L., Hartkopf, W.I., & Mason, B.D. 2014IAUDS.183....1H
USN2014b Inf. Circ. 183, 1, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 KNT Knott, G.
204 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
21103+1008 BU 71 AC 2002 17 360 57.3 4.70 12.50 A9V N D 211020.47+100755.0
21103+1008 BU 71 AC 2011 18 359 59.4 4.70 12.50 A9V N D 211020.47+100755.0
21103+1008 BU 71 AC 2015 20 359 59.9 4.70 12.58 A9V NL U 211020.47+100755.0

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

 
 
WDS 21103+1008 BU 71 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21103+1008 BU 71 AC : MEASURES
 
 
No records found.

 
 
WDS 21103+1008 : VIRTUAL EYEPIECE
 
 

21103+1008 KNT 5A mag 4.7 Sp A9V 21103+1008 KNT 5B sep 0.6 P.A. 248.10 mag 8.69 21103+1008 BU 71C sep 59.9 P.A. 358.50 mag 12.58 21103+1008 STFA 54D sep 334.0 P.A. 152.00 mag 6.06 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 21103+1008 : ALADIN DSS IMAGE @ 21h 10m 20.47s +10° 07' 55.0"
 
 
 
 
WDS 21103+1008 BU 71 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21103+1008 BU 71AC distance=0' 21084+1008 BU 9010AB distance=30' 21084+1008 BU 9010AC distance=30' 21107+1038 LEP 172 distance=32' 21110+0933 STF2765AB distance=37' 21110+0933 STF2765AC distance=37' 21086+0938 J 159 distance=40' 21121+1038 ENG 81AB distance=41' 21121+1038 BUP 226BC distance=43' 21131+1028 BU 1501 distance=46' 21088+1047 WAK 12 distance=48' 21101+0919 GWP3039 distance=50' 21071+1042 J 2576 distance=55' 21145+1000 STT 535AB distance=62' 21145+1000 STF2777AB,C distance=62' 21138+1045 HJ 278 distance=64' 21123+1105 BPMA251 distance=65' 21110+1113 BPM2339 distance=66' 21088+1113 BPM2334 distance=69' 21130+1109 GWP3042 distance=73' 21106+1126 BPM2337 distance=79' 21140+1106 AG 415AB distance=79' 21140+1106 TOB 316BC distance=80' 21137+1115 BPM2345 distance=84' 21116+1133 LDS4869 distance=87' 21147+0907 CVR 890 distance=90' 21041+0951 GWP3034 distance=95' 21056+1113 BPM2322 distance=96' 21137+0846 UC 4412AB distance=96' 21137+0846 RAO 449Aa,Ab distance=96' 21165+0936 BRT3228 distance=97' 21087+1145 BPM2333 distance=101' 21165+0924 LAF 64AB distance=102' 21165+0924 LAF 64AC distance=102' 21142+1135 BPM2350 distance=104' 21066+1137 J 1781 distance=105' 21139+1140 BPM2346 distance=107' 21056+1133 BPM2323 distance=110' 21061+0837 A 1217 distance=111' 21030+1030 SLN 87 distance=112' 21179+0952 HJ 3019 distance=113' 21143+1145 BPM2351 distance=114' 21161+0851 CVR 891 distance=116' 21071+1153 HJ 274AB distance=116' 21071+1153 SLE 526AC distance=116' 21181+1027 UC 4435 distance=117' 21054+1139 BPM2321 distance=117' 21073+1156 TOB 315 distance=118' 21181+0942 HJ 3020 distance=119' 21052+1140 GRV 413 distance=119' 21180+0934 HJ 3021 distance=119' 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 21103+1008 KNT 5 AB 248 0.6
Show 21103+1008 BU 71 AC 359 59.9
Show 21103+1008 STFA 54 AD 152 335.2
Show 21084+1008 BU 9010 AB 313 10.1 30
Show 21084+1008 BU 9010 AC 211 32.6 30
Show 21107+1038 LEP 172 11 4.7 32
Show 21110+0933 STF2765 AB 82 2.9 37
Show 21110+0933 STF2765 AC 167 44.2 37
Show 21086+0938 J 159 246 4.0 40
Show 21121+1038 ENG 81 AB 353 184.7 41
Show 21121+1038 BUP 226 BC 30 24.7 43
Show 21131+1028 BU 1501 210 1.0 46
Show 21088+1047 WAK 12 180 4.3 48
Show 21101+0919 GWP3039 61 73.1 50
Show 21071+1042 J 2576 58 5.4 55
Show 21145+1000 STT 535 AB 7 0.1 62
Show 21145+1000 STF2777 AB,C 6 76.5 62
Show 21138+1045 HJ 278 263 22.9 64
Show 21123+1105 BPMA251 305 252.8 65
Show 21110+1113 BPM2339 123 58.7 66
Show 21088+1113 BPM2334 311 75.2 69
Show 21130+1109 GWP3042 113 25.6 73
Show 21106+1126 BPM2337 97 68.2 79
Show 21140+1106 AG 415 AB 23 15.9 79
Show 21140+1106 TOB 316 BC 87 21.1 80
Show 21137+1115 BPM2345 10 52.4 84
Show 21116+1133 LDS4869 267 203.8 87
Show 21147+0907 CVR 890 3 29.1 90
Show 21041+0951 GWP3034 91 63.0 95
Show 21056+1113 BPM2322 253 67.4 96
Show 21137+0846 UC 4412 AB 201 8.6 96
Show 21137+0846 RAO 449 Aa,Ab 322 0.4 96
Show 21165+0936 BRT3228 259 6.2 97
Show 21087+1145 BPM2333 240 92.1 101
Show 21165+0924 LAF 64 AB 29 5.5 102
Show 21165+0924 LAF 64 AC 168 12.4 102
Show 21142+1135 BPM2350 144 29.1 104
Show 21066+1137 J 1781 116 7.5 105
Show 21139+1140 BPM2346 245 17.4 107
Show 21056+1133 BPM2323 321 73.7 110
Show 21061+0837 A 1217 193 2.0 111
Show 21030+1030 SLN 87 153 3.3 112
Show 21179+0952 HJ 3019 309 15.0 113
Show 21143+1145 BPM2351 255 115.3 114
Show 21161+0851 CVR 891 33 8.6 116
Show 21071+1153 HJ 274 AB 85 9.2 116
Show 21071+1153 SLE 526 AC 262 51.0 116
Show 21181+1027 UC 4435 259 50.5 117
Show 21054+1139 BPM2321 223 113.1 117
Show 21073+1156 TOB 315 92 24.9 118
Show 21181+0942 HJ 3020 295 25.8 119

 
 
WDS 21103+1008 : COMPONENTS
 
 
  A B C
B pa=248.1°
sep=0.60"
 
C pa=358.5°
sep=59.92"
pa=359.1°
sep=60.13"
 
D pa=152.0°
sep=334.03"
pa=151.9°
sep=334.09"
pa=155.9°
sep=388.54"
 
 
21103+1008 A
 
 
Name Gam Equ Coord arcsec 2000 211020.47+100755.0 Mag 4.7 Spectral class A9V (white)
PmRA 51.00 PmDE -153.0 SAO 126593 HIP 104521
Tycho2 1108-02583-1 HD 201601 HR 8097 GC 29591
ADS 14702 BD BD+09 4732 Bayer Gamma Equulei Bayer name Gam Equ
Flamsteed 5 Equulei Flamsteed name 5 Equ FK5 1555
Tycho2
Tycho2 1108-02583-1 Pflag RAmdeg 317.58542098 DEmdeg 10.13157595
PmRA 51.4 PmDE -152.5 E RAmdeg 4 E DEmdeg 4
E pmRA 0.7 E pmDE 0.7 EpRAm 1991.17 EpDEm 1991.30
Num 20 Q RAmdeg 1.5 Q DEmdeg 1.2 Q pmRA 1.4
Q pmDE 1.4 BTmag 5.014 E BTmag 0.014 VTmag 4.703
E VTmag 0.009 Prox 13 TYC T HIP 104521
CCDM A RAdeg 317.58530139 DEdeg 10.13192361 EpRA 1990 1.75
EpDE 1990 1.79 E RAdeg 3.5 E DEdeg 3.8 Posflg P
Corr 0.0
SAO
SAO 126593 DelFlag RA1950 PmRA1950 0.004
DE1950 PmDE1950 -0.152 Vmag 4.8 SpType F0p
Double code Source 74 CatNum 1555 DM BD+09 4732
DMcomp BDsup HD 201601 M HD 0
GC 29591 RA1950rad 5.53229947 DE1950rad 0.17329578 PmRA2000 0.0042
PmDE2000 -0.156
Hipparcos
Catalog H HIP 104521 Proxy H RAhms 21 10 20.47
DEdms +10 07 55.0 Vmag 4.7 VarFlag R Vmag G
RAdeg 317.585 DEdeg 10.1319 AstroRef A Plx 28.38
CCDM 21104+1007 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual B M HIP AB
Theta 264 Rho 1.26 HD 201601 BD BD+09 4732
CD CP Dm number +09 4732 VIred 0.26
SpType F0p R SpType Coord arcsec 2000 211020.47+100755.0
Hipparcos 2
HIP 104521 Sn 15 So 3 Nc 2
RArad 5.5429090802 DErad 0.1768358642 Plx 27.55 PmRA 48.74
PmDE -153.03 E RArad 0.47 E DErad 0.48 E Plx 0.62
E pmRA 0.66 E pmDE 0.52 Hpmag 4.7812 E Hpmag 0.0005
SHp 0.005 VA 0 BV 0.262 E BV 0.005
VI 0.26
 
 
21103+1008 B
 
 
Coord arcsec 2000 211020.43+100754.8 Mag 8.69 PmRA 49.00 PmDE -152.0
Calc delta mag 3.99 Calc coord yes
 
 
21103+1008 C
 
 
Coord arcsec 2000 211020.37+100854.9 Mag 12.58 PmRA -11.00 PmDE -16.0
Calc delta mag 7.88 Calc coord yes
 
 
21103+1008 D
 
 
Coord arcsec 2000 211031.10+100300.1 Mag 6.06 PmRA -1.00 PmDE 16.0
SAO 126597 HIP 104538 Tycho2 1108-02584-1 HD 201616
HR 8098 GC 29596 ADS 14702 BD BD+09 4735
Flamsteed 6 Equulei Flamsteed name 6 Equ Calc delta mag 1.36 Calc coord yes
Tycho2
Tycho2 1108-02584-1 Pflag RAmdeg 317.63048331 DEmdeg 10.04891734
PmRA 3.8 PmDE 15.9 E RAmdeg 4 E DEmdeg 4
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.56 EpDEm 1991.54
Num 12 Q RAmdeg 0.8 Q DEmdeg 1.2 Q pmRA 0.7
Q pmDE 1.2 BTmag 6.103 E BTmag 0.015 VTmag 6.061
E VTmag 0.010 Prox 999 TYC T HIP 104538
CCDM RAdeg 317.63047417 DEdeg 10.04888083 EpRA 1990 1.74
EpDE 1990 1.74 E RAdeg 3.9 E DEdeg 4.2 Posflg
Corr 0.0
SAO
SAO 126597 DelFlag RA1950 PmRA1950 -0.0007
DE1950 PmDE1950 0.019 Vmag 6 SpType A2
Double code Source 70 CatNum 29596 DM BD+09 4735
DMcomp BDsup HD 201616 M HD 0
GC 29596 RA1950rad 5.53308843 DE1950rad 0.1718104 PmRA2000 -0.0006
PmDE2000 0.015
Hipparcos
Catalog H HIP 104538 Proxy RAhms 21 10 31.31
DEdms +10 02 56.0 Vmag 6.07 VarFlag R Vmag G
RAdeg 317.63 DEdeg 10.0489 AstroRef Plx 6.81
CCDM 21104+1007 N CCDM I Nsys 2 Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 201616 BD BD+09 4735
CD CP Dm number +09 4735 VIred 0.04
SpType A2Vs R SpType Coord arcsec 2000 211031.31+100256.0
Hipparcos 2
HIP 104538 Sn 7 So 1 Nc 1
RArad 5.543697622 DErad 0.1753860408 Plx 7.36 PmRA -0.5
PmDE 16.4 E RArad 1.02 E DErad 0.59 E Plx 0.81
E pmRA 1.33 E pmDE 0.76 Hpmag 6.0868 E Hpmag 0.0008
SHp 0.007 VA 0 BV 0.022 E BV 0.002
VI 0.04