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Doubles in session


Current system
19500+1757
H 4 99 AC


Nearby doubles
6' : 19498+1802
BPM1664

9' : 19505+1802
TDT1796

10' : 19502+1748
J 3017

11' : 19507+1752
BPM1696

14' : 19508+1750
BPMA190

16' : 19494+1745
UC 248

17' : 19498+1741
BPM1665

18' : 19502+1741
TDT1790

18' : 19507+1743
BPM1698

19' : 19494+1740
BPM1650

21' : 19498+1737
BPM1666

21' : 19514+1759
BPM1722

24' : 19514+1746
BPM1721

25' : 19515+1809
BPMA195

25' : 19517+1758
BPM1731

25' : 19513+1741
KPP3348

27' : 19508+1733
KPP 445

28' : 19515+1815
KPP 446

28' : 19481+1803
BPM1603

29' : 19480+1758
BPM1599

29' : 19518+1810
TDT1808

30' : 19487+1735
GWP2896

30' : 19518+1744
BPM1736

31' : 19519+1810
BPM1740

32' : 19479+1750
BPM1593

32' : 19481+1814
GRV 280



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

19500+1757 H 4 99 AC

 
 
19h 49m 59.91s +17° 57' 26.0" P.A. 256.00 sep 68.8 mag 7.99,9.10 Sp B7Vp
 
 
Coord 2000 19500+1757 Discov num H 4  99 Comp AC Coord arcsec 2000 19 49 59.91 +17 57 26.0
Date first 1879 Date last 2018 Obs 23
Pa first 256 Pa last 255.5 P.A. Now (θ) 255.5°
Sep first 69.5 Sep last 68.76 Sep. Now (ρ) 68.76"
Mag pri 7.99 Mag sec 9.10 delta mag (ΔM) 1.11 Spectral class B7Vp (blue-white)
Pri motion ra +001 Sec motion ra +002
Pri motion dec -012 Sec motion dec -011
Notes N (See Notes)
rPM=0.117 (< 0.3, Physical double)
This double is physical.
 
 
19500+1757 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 187566 105324 19 49 60 +17 57 26 H 4 99 AB 2018 17 83 25.6 7.99 11.07 3.08
Show 105324 19 49 60 +17 57 26 H 4 99 AC 2018 23 256 68.8 7.99 9.10 1.11 <===
Show 105324 19 49 60 +17 57 26 H 4 99 AD 2018 11 340 44.1 7.99 13.23 5.24
Show 105324 19 49 60 +17 57 26 ABH 126 AE 2018 10 143 71.0 7.99 13.42 5.43
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta SAO 105324 Tycho2 1619-02489-1 Gaia DR2 1821439903076671488
HD 187566
 
 
WDS 19500+1757 H 4 99 AC : NOTES
 
 
discov_num notes refcode
H 4 99 AB: H IV 99.
 
 
DISCOVERER
 
 
discov author
ABH Abt, H.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
19500+1757 H 4 99 AC 2003 16 256 69.1 7.99 9.10 B7Vp +17 4109 N D 194959.91+175726.0
19500+1757 H 4 99 AC 2012 18 256 68.6 7.99 9.10 B7Vp +17 4109 N D 194959.91+175726.0
19500+1757 H 4 99 AC 2013 19 256 68.5 7.99 9.10 B7Vp +17 4109 N 194959.91+175726.0
19500+1757 H 4 99 AC 2015 22 256 68.7 7.99 9.10 B7Vp +17 4109 N 194959.91+175726.0
19500+1757 H 4 99 AC 2018 23 256 68.8 7.99 9.10 B7Vp +17 4109 N 194959.91+175726.0

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

 
 
WDS 19500+1757 H 4 99 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19500+1757 H 4 99 AC : MEASURES
 
 
No records found.

 
 
WDS 19500+1757 : VIRTUAL EYEPIECE
 
 

19500+1757 H 4 99A mag 7.99 Sp B7Vp 19500+1757 H 4 99B sep 25.6 P.A. 83.20 mag 11.07 Sp B9V 19500+1757 H 4 99C sep 68.8 P.A. 255.50 mag 9.1 19500+1757 H 4 99D sep 44.0 P.A. 339.60 mag 13.23 19500+1757 ABH 126E sep 71.0 P.A. 143.40 mag 13.42 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 19500+1757 : ALADIN DSS IMAGE @ 19h 49m 59.91s +17° 57' 26.0"
 
 
 
 
WDS 19500+1757 H 4 99 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19500+1757 H 4 99AC distance=0' 19498+1802 BPM1664 distance=6' 19505+1802 TDT1796 distance=9' 19502+1748 J 3017 distance=10' 19507+1752 BPM1696 distance=11' 19508+1750 BPMA190 distance=14' 19494+1745 UC 248 distance=16' 19498+1741 BPM1665 distance=17' 19502+1741 TDT1790 distance=18' 19507+1743 BPM1698 distance=18' 19494+1740 BPM1650 distance=19' 19498+1737 BPM1666 distance=21' 19514+1759 BPM1722 distance=21' 19514+1746 BPM1721 distance=24' 19515+1809 BPMA195 distance=25' 19517+1758 BPM1731 distance=25' 19513+1741 KPP3348 distance=25' 19508+1733 KPP 445 distance=27' 19515+1815 KPP 446 distance=28' 19481+1803 BPM1603 distance=28' 19480+1758 BPM1599 distance=29' 19518+1810 TDT1808 distance=29' 19487+1735 GWP2896 distance=30' 19518+1744 BPM1736 distance=30' 19519+1810 BPM1740 distance=31' 19479+1750 BPM1593 distance=32' 19481+1814 GRV 280 distance=32' 19479+1806 J 1187 distance=32' 19505+1726 J 141 distance=33' 19477+1802 BPMA175 distance=34' 19492+1830 GRV 283 distance=35' 19497+1720 BPM1660 distance=38' 19526+1809 BPMA197 distance=39' 19523+1737 HEI9013 distance=39' 19473+1805 BPM1558 distance=40' 19496+1718 GRV 286 distance=40' 19491+1720 BPM1638 distance=40' 19515+1723 BPM1726 distance=41' 19495+1715 BPM1654BC distance=42' 19495+1715 BPM1655BD distance=42' 19505+1839 TDT1795 distance=43' 19471+1750 BPM1548 distance=43' 19525+1818 GRV 290 distance=43' 19499+1715 BPM1669 distance=43' 19519+1725 J 1317 distance=43' 19519+1722 J 3022 distance=43' 19484+1834 TDT1772 distance=43' 19495+1715 BPM1652AB distance=44' 19495+1715 BPM1653AC distance=44' 19528+1813 TDT1821 distance=44' 19507+1715 BPM1695 distance=44' 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 19500+1757 H 4 99 AB 83 25.6 0
Show 19500+1757 H 4 99 AC 256 68.8 0
Show 19500+1757 H 4 99 AD 340 44.1 0
Show 19500+1757 ABH 126 AE 143 71.0 0
Show 19498+1802 BPM1664 333 44.7 6
Show 19505+1802 TDT1796 97 4.3 9
Show 19502+1748 J 3017 51 5.5 10
Show 19507+1752 BPM1696 69 39.1 11
Show 19508+1750 BPMA190 46 173.6 14
Show 19494+1745 UC 248 244 31.6 16
Show 19498+1741 BPM1665 270 102.7 17
Show 19502+1741 TDT1790 171 4.9 18
Show 19507+1743 BPM1698 88 68.5 18
Show 19494+1740 BPM1650 316 48.4 19
Show 19498+1737 BPM1666 176 82.6 21
Show 19514+1759 BPM1722 24 113.2 21
Show 19514+1746 BPM1721 3 91.5 24
Show 19515+1809 BPMA195 102 177.1 25
Show 19517+1758 BPM1731 298 108.9 25
Show 19513+1741 KPP3348 353 5.7 25
Show 19508+1733 KPP 445 6 4.7 27
Show 19515+1815 KPP 446 161 4.7 28
Show 19481+1803 BPM1603 109 101.8 28
Show 19480+1758 BPM1599 182 48.6 29
Show 19518+1810 TDT1808 98 0.8 29
Show 19487+1735 GWP2896 223 290.6 30
Show 19518+1744 BPM1736 225 113.5 30
Show 19519+1810 BPM1740 306 82.6 31
Show 19479+1750 BPM1593 187 108.1 32
Show 19481+1814 GRV 280 228 40.0 32
Show 19479+1806 J 1187 196 1.3 32
Show 19505+1726 J 141 45 4.4 33
Show 19477+1802 BPMA175 152 225.0 34
Show 19492+1830 GRV 283 342 34.2 35
Show 19497+1720 BPM1660 340 85.3 38
Show 19526+1809 BPMA197 101 209.6 39
Show 19523+1737 HEI9013 330 4.2 39
Show 19473+1805 BPM1558 27 62.2 40
Show 19496+1718 GRV 286 87 29.2 40
Show 19491+1720 BPM1638 12 96.4 40
Show 19515+1723 BPM1726 251 110.2 41
Show 19495+1715 BPM1654 BC 225 103.9 42
Show 19495+1715 BPM1655 BD 342 104.7 42
Show 19505+1839 TDT1795 115 0.6 43
Show 19471+1750 BPM1548 22 78.3 43
Show 19525+1818 GRV 290 18 26.6 43
Show 19499+1715 BPM1669 124 114.1 43
Show 19519+1725 J 1317 59 2.6 43
Show 19519+1722 J 3022 125 6.0 43
Show 19484+1834 TDT1772 139 0.6 43
Show 19495+1715 BPM1652 AB 20 104.0 44

 
 
WDS 19500+1757 : COMPONENTS
 
 
  A B C D
B pa=83.2°
sep=25.64"
 
C pa=255.5°
sep=68.76"
pa=257.6°
sep=94.23"
 
D pa=339.6°
sep=44.05"
pa=313.1°
sep=55.94"
pa=41.2°
sep=77.75"
 
E pa=143.4°
sep=71.01"
pa=164.3°
sep=62.37"
pa=110.1°
sep=115.96"
pa=149.6°
sep=113.98"
 
 
19500+1757 A
 
 
Name HD 187566 Coord arcsec 2000 194959.91+175726.0 Mag 7.99 Spectral class B7Vp (blue-white)
PmRA 1.00 PmDE -12.0 Tycho2 1619-02489-1 HD 187566
Tycho2
Tycho2 1619-02489-1 Pflag RAmdeg 297.49967730 DEmdeg 17.95722644
PmRA 2.1 PmDE -10.2 E RAmdeg 4 E DEmdeg 4
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.65 EpDEm 1991.63
Num 8 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.1
Q pmDE 0.6 BTmag 7.906 E BTmag 0.015 VTmag 7.985
E VTmag 0.010 Prox 687 TYC T HIP
CCDM RAdeg 297.49967222 DEdeg 17.95724972 EpRA 1990 1.82
EpDE 1990 1.81 E RAdeg 4.1 E DEdeg 4.4 Posflg
Corr 0.2
CCDM
Ccdm 19500+1757 RComp Comp A Note1
Note2 Discov num DRAs -0.03 DDEs 25.2
R dRAs 10 Year Theta Rho
Obs 3 Vmag 8.3 Sp A0 PmNote *
PmRA 11 PmDE -26 Dm number +17 4110 Cat1 BD
Name2 +17 2065 Cat2 AGK2/3 HD 187566 M HD
ADS BDS B 9655 M ADS BDS N IDS IDS 19455N1742A
HIC
 
 
19500+1757 B
 
 
Coord arcsec 2000 195001.69+175729.0 Mag 11.07 Spectral class B9V (blue-white) PmRA 7.00
PmDE 0.0 Delta magnitude 3.08 Coordinate calculated yes
CCDM
Ccdm 19500+1757 RComp Comp B Note1
Note2 Discov num H 99 DRAs DDEs
R dRAs Year 1879 Theta 085 Rho 24.8
Obs 3 Vmag 10.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B 9655 M ADS BDS N N IDS IDS 19455N1742B
HIC
 
 
19500+1757 C
 
 
Coord arcsec 2000 194955.24+175708.8 Mag 9.1 PmRA 2.00 PmDE -11.0
Tycho2 1619-00441-1 HD 350707 Delta magnitude 1.11 Coordinate calculated yes
Tycho2
Tycho2 1619-00441-1 Pflag RAmdeg 297.48022953 DEmdeg 17.95250014
PmRA 3.0 PmDE -10.7 E RAmdeg 8 E DEmdeg 8
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.02 EpDEm 1991.06
Num 8 Q RAmdeg 0.9 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.7 BTmag 9.129 E BTmag 0.017 VTmag 9.104
E VTmag 0.015 Prox 687 TYC T HIP
CCDM RAdeg 297.48022306 DEdeg 17.95252472 EpRA 1990 1.79
EpDE 1990 1.81 E RAdeg 7.5 E DEdeg 7.7 Posflg
Corr 0.2
CCDM
Ccdm 19500+1757 RComp Comp C Note1
Note2 Discov num H 99 DRAs -4.75 DDEs 9.1
R dRAs 10 Year 1879 Theta 256 Rho 68.7
Obs 3 Vmag 9.3 Sp PmNote *
PmRA -1 PmDE -10 Dm number +17 4109 Cat1 BD
Name2 +17 2064 Cat2 AGK2/3 HD M HD
ADS BDS B 9655 M ADS BDS N N IDS IDS 19455N1742C
HIC
 
 
19500+1757 D
 
 
Coord arcsec 2000 194958.83+175807.3 Mag 13.23 PmRA 6.00 PmDE -22.0
Delta magnitude 5.24 Coordinate calculated yes
 
 
19500+1757 E
 
 
Coord arcsec 2000 195002.88+175629.0 Mag 13.42 PmRA -3.00 PmDE -8.0
SAO 48880 Delta magnitude 5.43 Coordinate calculated yes
SAO
SAO 48880 DelFlag RA1950 PmRA1950 -0.0016
DE1950 PmDE1950 -0.002 Vmag 8.2 SpType K0
Double code Source 3 CatNum 1590 DM BD+44 3265
DMcomp BDsup HD 187810 M HD 0
GC RA1950rad 5.18545756 DE1950rad 0.78581534 PmRA2000 -0.0012
PmDE2000 -0.004