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Doubles in session


Current system
21516+1950
HJ 947 BC


Nearby doubles
17' : 21505+1953
LDS4916

32' : 21517+1918
STF2834AB

34' : 21514+1916
WSI 24

48' : 21513+2036
SKF2181

54' : 21550+1926
TDT3238

57' : 21497+2039
TDT3182

59' : 21549+1914
AMS 2

62' : 21560+1948
ALL 4

64' : 21551+1908
J 2

71' : 21565+1940
HU 382

75' : 21466+1929
COU 431

78' : 21550+1849
UC 4596

78' : 21461+2001
HU 376

85' : 21553+1842
HO 173

86' : 21481+2100
HU 378

87' : 21569+2037
LDS1484

90' : 21577+2015
STF2849

92' : 21451+1954
RAO 466

101' : 21479+1824
BPM2409

102' : 21576+2047
L 37

104' : 21515+1806
GIC 173

105' : 21517+2134
BRT2501

108' : 21592+1950
GWP3112

109' : 21457+2100
UC 4553

113' : 21541+1803
SKF2182

113' : 21461+2111
AG 277



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.

21516+1950 HJ 947 BC

 
 
21h 51m 35.56s +19° 49' 33.6" P.A. 297.00 sep 41.1 mag 11.39,13.51
 
 
Coord 2000 21516+1950 Discov num HJ  947 Comp BC Coord arcsec 2000 21 51 35.56 +19 49 33.6
Date first 1825 Date last 2015 Obs 14
Pa first 297 Pa last 296.7 P.A. Now (θ) 296.7°
Sep first 32.7 Sep last 41.144 Sep. Now (ρ) 41.144"
Mag pri 11.39 Mag sec 13.51 delta mag (ΔM) 2.12 Spectral class
Pri motion ra +007 Sec motion ra -015
Pri motion dec +001 Sec motion dec -003
Notes N (See Notes)
rPM=1.462
This double is not physical.
 
 
21516+1950 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 207840 107445 21 51 34 +19 49 36 HJ 947 AB 2012 18 98 18.9 5.78 11.39 5.61
Show 107445 21 51 34 +19 49 36 HJ 947 AC 2012 11 310 24.3 5.78 13.51 7.73
Show 21 51 36 +19 49 34 HJ 947 BC 2015 14 297 41.1 11.39 13.51 2.12 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pegasus Gaia DR2 1780482888740920960
 
 
WDS 21516+1950 HJ 947 BC : NOTES
 
 
discov_num notes refcode
HJ 947 AB: H N 74. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 HJ Herschel, J.F.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21516+1950 HJ 947 BC 1999 9 297 41.1 11.39 13.51 D 215135.56+194933.6
21516+1950 HJ 947 BC 2001 10 297 41.1 11.39 13.51 N D 215135.56+194933.6
21516+1950 HJ 947 BC 2012 11 297 42.5 11.39 13.51 N D 215135.56+194933.6
21516+1950 HJ 947 BC 2015 12 297 41.1 11.39 13.51 N 215135.56+194933.6

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

 
 
WDS 21516+1950 HJ 947 BC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21516+1950 HJ 947 BC : MEASURES
 
 
No records found.

 
 
WDS 21516+1950 : VIRTUAL EYEPIECE
 
 

21516+1950 HJ 947A mag 5.78 Sp B8III 21516+1950 HJ 947B sep 18.8 P.A. 97.00 mag 11.39 21516+1950 HJ 947C sep 23.4 P.A. 311.40 mag 13.51 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 21516+1950 : ALADIN DSS IMAGE @ 21h 51m 35.56s +19° 49' 33.6"
 
 
 
 
WDS 21516+1950 HJ 947 BC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21516+1950 HJ 947BC distance=0' 21516+1950 HJ 947AB distance=1' 21516+1950 HJ 947AC distance=1' 21505+1953 LDS4916 distance=17' 21517+1918 BU 1506BC distance=32' 21517+1918 STF2834AB distance=32' 21517+1918 BU 1506AC distance=32' 21514+1916 WSI 24 distance=34' 21543+1943 STF2841A,BC distance=39' 21543+1943 COU 432BC distance=39' 21513+2036 SKF2181 distance=48' 21550+1926 TDT3238 distance=54' 21497+2039 TDT3182 distance=57' 21549+1914 AMS 2 distance=59' 21560+1948 ALL 4 distance=62' 21551+1908 J 2 distance=64' 21565+1940 HU 382 distance=71' 21466+1929 COU 431 distance=75' 21550+1849 UC 4596 distance=78' 21461+2001 HU 376 distance=78' 21553+1842 HO 173 distance=85' 21481+2100 HU 378 distance=86' 21569+2037 LDS1484 distance=87' 21577+2015 STF2849 distance=90' 21451+1954 RAO 466 distance=92' 21479+1824 BPM2409 distance=101' 21576+2047 L 37 distance=102' 21515+1806 GIC 173 distance=104' 21517+2134 BRT2501 distance=105' 21592+1950 GWP3112 distance=108' 21457+2100 UC 4553 distance=109' 21541+1803 SKF2182 distance=113' 21461+2111 AG 277 distance=113' 21592+2042 UC 4621 distance=120' 21487+2144 BRT2500 distance=121' 21473+2134 GRV 505 distance=121' 21477+1755 LDS4909 distance=127' 21597+2049 GRV 526 distance=129' 21500+2157 TDT3184 distance=130' 21433+2046 J 852 distance=130' 21557+1752 BPM2413 distance=132' 21598+1843 UC 4623 distance=135' 21495+2202 COU 135 distance=136' 21419+1949 CBL 533 distance=137' 21536+1735 J 288 distance=137' 21426+1900 HO 165 distance=137' 21531+1731 DAM 240BC distance=139' 21531+1731 J 3150AB distance=139' 21429+1843 SLW1251 distance=141' 21579+1759 GWP3109 distance=143' 21537+2212 J 2361 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 21516+1950 HJ 947 BC 297 41.1
Show 21516+1950 HJ 947 AB 98 18.9 1
Show 21516+1950 HJ 947 AC 310 24.3 1
Show 21505+1953 LDS4916 298 198.7 17
Show 21517+1918 BU 1506 BC 118 29.9 32
Show 21517+1918 STF2834 AB 298 4.3 32
Show 21517+1918 BU 1506 AC 116 29.7 32
Show 21514+1916 WSI 24 24 14.2 34
Show 21543+1943 STF2841 A,BC 110 22.4 39
Show 21543+1943 COU 432 BC 299 0.1 39
Show 21513+2036 SKF2181 353 18.9 48
Show 21550+1926 TDT3238 230 0.6 54
Show 21497+2039 TDT3182 210 1.9 57
Show 21549+1914 AMS 2 199 7.0 59
Show 21560+1948 ALL 4 208 19.2 62
Show 21551+1908 J 2 35 3.5 64
Show 21565+1940 HU 382 221 0.3 71
Show 21466+1929 COU 431 184 0.5 75
Show 21550+1849 UC 4596 308 17.3 78
Show 21461+2001 HU 376 14 1.4 78
Show 21553+1842 HO 173 73 0.9 85
Show 21481+2100 HU 378 298 0.2 86
Show 21569+2037 LDS1484 218 9.1 87
Show 21577+2015 STF2849 243 1.7 90
Show 21451+1954 RAO 466 249 0.6 92
Show 21479+1824 BPM2409 309 97.5 101
Show 21576+2047 L 37 90 2.9 102
Show 21515+1806 GIC 173 140 5.7 104
Show 21517+2134 BRT2501 324 5.2 105
Show 21592+1950 GWP3112 169 82.8 108
Show 21457+2100 UC 4553 184 63.7 109
Show 21541+1803 SKF2182 326 74.9 113
Show 21461+2111 AG 277 62 2.7 113
Show 21592+2042 UC 4621 321 13.8 120
Show 21487+2144 BRT2500 243 4.6 121
Show 21473+2134 GRV 505 327 45.5 121
Show 21477+1755 LDS4909 66 32.7 127
Show 21597+2049 GRV 526 81 45.6 129
Show 21500+2157 TDT3184 171 2.6 130
Show 21433+2046 J 852 92 4.2 130
Show 21557+1752 BPM2413 343 97.0 132
Show 21598+1843 UC 4623 183 42.9 135
Show 21495+2202 COU 135 302 9.2 136
Show 21419+1949 CBL 533 123 64.8 137
Show 21536+1735 J 288 309 6.7 137
Show 21426+1900 HO 165 63 0.8 137
Show 21531+1731 DAM 240 BC 73 8.7 139
Show 21531+1731 J 3150 AB 335 4.6 139
Show 21429+1843 SLW1251 328 123.9 141
Show 21579+1759 GWP3109 338 7.2 143
Show 21537+2212 J 2361 114 7.5 146

 
 
WDS 21516+1950 : COMPONENTS
 
 
  A B
B pa=97.0°
sep=18.77"
 
C pa=311.4°
sep=23.41"
pa=296.2°
sep=40.32"
 
 
21516+1950 A
 
 
Name HD 207840 Coord arcsec 2000 215134.24+194935.9 Mag 5.78 Spectral class B8III (blue-white)
PmRA 21.00 PmDE 13.0 SAO 107445 HIP 107887
Tycho2 1674-00925-1 HD 207840 HR 8348 GC 30594
BD BD+19 4797
Tycho2
Tycho2 1674-00925-1 Pflag RAmdeg 327.89270681 DEmdeg 19.82668373
PmRA 22.4 PmDE 14.7 E RAmdeg 4 E DEmdeg 4
E pmRA 0.9 E pmDE 0.9 EpRAm 1991.49 EpDEm 1991.47
Num 14 Q RAmdeg 1.0 Q DEmdeg 0.8 Q pmRA 1.0
Q pmDE 0.8 BTmag 5.637 E BTmag 0.014 VTmag 5.751
E VTmag 0.009 Prox 999 TYC T HIP 107887
CCDM RAdeg 327.89265250 DEdeg 19.82665000 EpRA 1990 1.78
EpDE 1990 1.76 E RAdeg 3.5 E DEdeg 3.5 Posflg
Corr -0.3
SAO
SAO 107445 DelFlag RA1950 PmRA1950 0.001
DE1950 PmDE1950 0.021 Vmag 5.7 SpType B9
Double code Source 70 CatNum 30594 DM BD+19 4797
DMcomp BDsup HD 207840 M HD 0
GC 30594 RA1950rad 5.71255018 DE1950rad 0.34193602 PmRA2000 0.001
PmDE2000 0.017
Hipparcos
Catalog H HIP 107887 Proxy RAhms 21 51 34.24
DEdms +19 49 35.9 Vmag 5.78 VarFlag R Vmag H
RAdeg 327.893 DEdeg 19.8266 AstroRef Plx 5.58
CCDM 21516+1950 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 207840 BD BD+19 4797
CD CP Dm number +19 4797 VIred -0.08
SpType B8III R SpType Coord arcsec 2000 215134.24+194935.9
Hipparcos 2
HIP 107887 Sn 5 So 0 Nc 1
RArad 5.7228063029 DErad 0.3460403093 Plx 6.19 PmRA 20.65
PmDE 13.34 E RArad 0.26 E DErad 0.26 E Plx 0.33
E pmRA 0.32 E pmDE 0.27 Hpmag 5.7499 E Hpmag 0.0011
SHp 0.008 VA 0 BV -0.1 E BV 0.005
VI -0.08
CCDM
Ccdm 21516+1950 RComp Comp A Note1
Note2 Discov num DRAs -1.74 DDEs -23.6
R dRAs 55 Year Theta Rho
Obs 3 Vmag 5.8 Sp B9 PmNote *
PmRA 10 PmDE 10 Dm number +19 4797 Cat1 BD
Name2 +19 2248 Cat2 AGK2/3 HD 207840 M HD
ADS BDS A15383 M ADS BDS N IDS IDS 21469N1921A
HIC 107887
 
 
21516+1950 B
 
 
Coord arcsec 2000 215135.56+194933.6 Coord calc 215135.56+194933.6 Mag 11.39 PmRA 7.00
PmDE 1.0 Calc delta mag 5.61
CCDM
Ccdm 21516+1950 RComp Comp B Note1
Note2 Discov num HJ 947 DRAs -0.49 DDEs -26.8
R dRAs 55 Year 1924 Theta 095 Rho 19.4
Obs 3 Vmag 9.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15383 M ADS BDS N IDS IDS 21469N1921B
HIC
 
 
21516+1950 C
 
 
Coord arcsec 2000 215133.00+194951.4 Mag 13.51 PmRA -15.00 PmDE -3.0
Calc delta mag 7.73 Calc coord yes
CCDM
Ccdm 21516+1950 RComp Comp C Note1
Note2 Discov num HJ 947 DRAs -3.04 DDEs -7.3
R dRAs 55 Year 1924 Theta 320 Rho 23.8
Obs 3 Vmag 11.1 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A15383 M ADS BDS N IDS IDS 21469N1921C
HIC