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Current system
18121+4015
LEO 1


Nearby doubles
8' : 18117+4020
UC 3526

20' : 18126+4033
OSO 96

31' : 18097+4001
TDT 714

38' : 18144+4042
TDS 910

51' : 18079+4002
ES 1649AB

54' : 18153+4054
BVD 261

58' : 18171+4015
STF2304

65' : 18065+4022
STF2282AB

67' : 18158+4107
ES 1651

68' : 18169+3935
TDT 773

69' : 18126+4123
STF2298AB

70' : 18112+3906
HDS2565

74' : 18107+3903
ES 2569

75' : 18131+4129
TOK 319

78' : 18177+3932
TDT 778

82' : 18058+4054
TDT 677

85' : 18077+3904
ES 2018

86' : 18140+3853
NSN 793

89' : 18186+4104
BRT1915

91' : 18183+3920
ALI1101

92' : 18199+4033
BRT1916

93' : 18177+4122
LDS4783

97' : 18189+3918
MLB1078

100' : 18126+3836
BU 1091

100' : 18035+4032
COU1785

102' : 18156+3842
ALI 871



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18121+4015 LEO 1

 
 
18h 12m 07.00s +40° 15' 00.6" P.A. 146.00 sep 1.5 mag 10.35,11.34 Sp F8
 
 
Coord 2000 18121+4015 Discov num LEO   1 Comp Coord arcsec 2000 18 12 07.00 +40 15 00.6
Date first 1916 Date last 2015 Obs 10
Pa first 153 Pa last 145.8 P.A. Now (θ) 145.8°
Sep first 1.4 Sep last 1.47 Sep. Now (ρ) 1.47"
Mag pri 10.35 Mag sec 11.34 delta mag (ΔM) 0.99 Spectral class F8 (yellow-white)
Pri motion ra -013 Sec motion ra -013
Pri motion dec -009 Sec motion dec -009
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules Tycho2 3107-02439-1 Gaia DR2 2112420707524781696
 
 
WDS 18121+4015 LEO 1 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Leo1918 Ma - Leonard, F.C. 1918MNRAS..78..475L
Leo1918 MNRAS 78, 475, 1918
Leo1933 Ma - Leonard, F.C. 1933LicOB..16...90L
Leo1933 Lick Obs. Bull. 16, 90, 1933
Leo1943 Ma - Leonard, F.C. 1943PASP...55..241L
Leo1943 PASP 55, 241, 1943
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18121+4015 LEO 1 2003 8 149 1.4 10.35 11.34 F8 181207.00+401500.6
18121+4015 LEO 1 2010 9 147 1.5 10.35 11.34 F8 181207.00+401500.6
18121+4015 LEO 1 2015 10 146 1.5 10.35 11.34 F8 181207.00+401500.6

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

 
 
WDS 18121+4015 LEO 1 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18121+4015 LEO 1 : MEASURES
 
 
No records found.

 
 
WDS 18121+4015 : VIRTUAL EYEPIECE
 
 

18121+4015 LEO 1A mag 10.35 Sp F8 18121+4015 LEO 1B sep 1.4 P.A. 152.60 mag 11.34 virtual eyepiece
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Radius:
Components only
 
 
WDS 18121+4015 : ALADIN DSS IMAGE @ 18h 12m 07.00s +40° 15' 00.6"
 
 
 
 
WDS 18121+4015 LEO 1 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18121+4015 LEO 1 distance=0' 18117+4020 UC 3526 distance=8' 18126+4033 OSO 96 distance=20' 18097+4001 TDT 714 distance=31' 18144+4042 TDS 910 distance=38' 18079+4002 ES 1649AB distance=51' 18079+4002 ES 1649AC distance=51' 18153+4054 BVD 261 distance=54' 18171+4015 STF2304 distance=58' 18065+4022 STF2282AB distance=65' 18065+4022 STF2282AC distance=65' 18065+4022 STF2282BC distance=65' 18158+4107 ES 1651 distance=67' 18169+3935 TDT 773 distance=68' 18126+4123 STF2298AB distance=69' 18126+4123 STF2298AC distance=69' 18126+4123 WAL 89AB,D distance=69' 18112+3906 HDS2565 distance=70' 18107+3903 ES 2569 distance=74' 18131+4129 TOK 319 distance=75' 18177+3932 TDT 778 distance=78' 18058+4054 TDT 677 distance=82' 18077+3904 ES 2018 distance=85' 18140+3853 NSN 793 distance=86' 18186+4104 BRT1915 distance=89' 18183+3920 ALI1101 distance=91' 18199+4033 BRT1916 distance=92' 18177+4122 LDS4783 distance=93' 18189+3918 MLB1078 distance=97' 18126+3836 BU 1091 distance=100' 18035+4032 COU1785 distance=100' 18156+3842 ALI 871 distance=102' 18150+3840 LDS4781 distance=102' 18163+3846 KPP1820 distance=102' 18206+4049 LDS4785 distance=103' 18040+3923 L 19 distance=104' 18093+3836 HEI 557 distance=104' 18196+3915 MLB 754 distance=106' 18154+3836 MLB 852 distance=107' 18096+3827 LUH 13 distance=112' 18180+3846 GIC 151 distance=113' 18217+4039 UC 3559 distance=113' 18032+3926 MLB 851 distance=114' 18210+3923 DAM 108 distance=115' 18033+3921 STF2275 distance=116' 18129+3819 TDT 737 distance=117' 18108+4212 TDT 724 distance=118' 18029+4109 ES 1648 distance=119' 18064+3837 ES 2017 distance=119' 18211+3917 COU1459 distance=120' 18017+4011 STF2267 distance=120' 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 18121+4015 LEO 1 146 1.5
Show 18117+4020 UC 3526 137 25.0 8
Show 18126+4033 OSO 96 73 2.8 20
Show 18097+4001 TDT 714 312 0.8 31
Show 18144+4042 TDS 910 265 2.0 38
Show 18079+4002 ES 1649 AB 331 7.8 51
Show 18079+4002 ES 1649 AC 226 24.4 51
Show 18153+4054 BVD 261 307 20.9 54
Show 18171+4015 STF2304 69 5.1 58
Show 18065+4022 STF2282 AB 83 2.7 65
Show 18065+4022 STF2282 AC 80 2.7 65
Show 18065+4022 STF2282 BC 48 0.2 65
Show 18158+4107 ES 1651 5 2.5 67
Show 18169+3935 TDT 773 128 0.9 68
Show 18126+4123 STF2298 AB 172 1.9 69
Show 18126+4123 STF2298 AC 40 72.9 69
Show 18126+4123 WAL 89 AB,D 71 46.6 69
Show 18112+3906 HDS2565 340 0.7 70
Show 18107+3903 ES 2569 275 10.0 74
Show 18131+4129 TOK 319 301 94.2 75
Show 18177+3932 TDT 778 177 0.9 78
Show 18058+4054 TDT 677 231 0.5 82
Show 18077+3904 ES 2018 236 5.7 85
Show 18140+3853 NSN 793 125 6.5 86
Show 18186+4104 BRT1915 12 4.5 89
Show 18183+3920 ALI1101 176 7.6 91
Show 18199+4033 BRT1916 299 3.2 92
Show 18177+4122 LDS4783 135 56.4 93
Show 18189+3918 MLB1078 316 6.6 97
Show 18126+3836 BU 1091 319 0.7 100
Show 18035+4032 COU1785 30 0.2 100
Show 18156+3842 ALI 871 181 12.9 102
Show 18150+3840 LDS4781 2.5 102
Show 18163+3846 KPP1820 296 14.1 102
Show 18206+4049 LDS4785 180 36.8 103
Show 18040+3923 L 19 274 0.2 104
Show 18093+3836 HEI 557 281 1.8 104
Show 18196+3915 MLB 754 49 4.4 106
Show 18154+3836 MLB 852 42 8.9 107
Show 18096+3827 LUH 13 327 769.2 112
Show 18180+3846 GIC 151 277 9.8 113
Show 18217+4039 UC 3559 248 48.2 113
Show 18032+3926 MLB 851 34 6.7 114
Show 18210+3923 DAM 108 115 5.6 115
Show 18033+3921 STF2275 124 0.3 116
Show 18129+3819 TDT 737 245 0.4 117
Show 18108+4212 TDT 724 56 0.5 118
Show 18029+4109 ES 1648 9 3.7 119
Show 18064+3837 ES 2017 268 2.6 119
Show 18211+3917 COU1459 92 1.4 120
Show 18017+4011 STF2267 280 0.4 120

 
 
WDS 18121+4015 : COMPONENTS
 
 
  A
B pa=152.6°
sep=1.37"
 
 
18121+4015 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 181207.00+401500.6 Mag 10.35 Spectral class F8 (yellow-white)
PmRA -13.00 PmDE -9.0 Tycho2 3107-02439-1
Tycho2
Tycho2 3107-02439-1 Pflag P RAmdeg 273.02916646 DEmdeg 40.25015584
PmRA -13.4 PmDE -9.0 E RAmdeg 25 E DEmdeg 25
E pmRA 1.8 E pmDE 1.6 EpRAm 1989.70 EpDEm 1989.27
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.6 Q pmRA 1.2
Q pmDE 0.7 BTmag 10.898 E BTmag 0.044 VTmag 10.351
E VTmag 0.038 Prox 15 TYC T HIP
CCDM RAdeg 273.02913306 DEdeg 40.25025917 EpRA 1990 1.65
EpDE 1990 1.63 E RAdeg 25.1 E DEdeg 25.1 Posflg D
Corr 0.0
CCDM
Ccdm 18121+4015 RComp Comp A Note1
Note2 Discov num DRAs 0.97 DDEs 1.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 10.5 Sp F8 PmNote *
PmRA -7 PmDE 7 Dm number +40 3309 Cat1 BD
Name2 +40 1658 Cat2 AGK2/3 HD M HD
ADS BDS A11158 M ADS BDS N IDS IDS 18088N4013A
HIC
 
 
18121+4015 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 181207.06+401459.4 Mag 11.34 PmRA -13.00
PmDE -9.0 Tycho2 3107-02439-2 Calc delta mag 0.99 Calc coord yes
Tycho2
Tycho2 3107-02439-2 Pflag P RAmdeg 273.02916646 DEmdeg 40.25015584
PmRA -13.4 PmDE -9.0 E RAmdeg 25 E DEmdeg 25
E pmRA 1.8 E pmDE 1.6 EpRAm 1989.70 EpDEm 1989.27
Num 3 Q RAmdeg 1.2 Q DEmdeg 0.6 Q pmRA 1.2
Q pmDE 0.7 BTmag 11.724 E BTmag 0.075 VTmag 11.335
E VTmag 0.088 Prox 15 TYC HIP
CCDM RAdeg 273.02944778 DEdeg 40.24991028 EpRA 1990 1.66
EpDE 1990 1.63 E RAdeg 50.6 E DEdeg 50.4 Posflg D
Corr 0.0
CCDM
Ccdm 18121+4015 RComp Comp B Note1
Note2 Discov num LEO 1 DRAs DDEs
R dRAs Year 1916 Theta 150 Rho 1.5
Obs 4 Vmag 11.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11158 M ADS BDS N IDS IDS 18088N4013B
HIC