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Current system
19217-1715
HO 272 AB
HD 181576


Nearby doubles
6' : 19217-1710
GWP2844

11' : 19224-1719
HU 265

21' : 19209-1659
LEO 58

24' : 19207-1656
LEO 26

31' : 19238-1712
RST3223

37' : 19217-1751
OCC 543

44' : 19190-1654
RST3221

48' : 19229-1759
HWE 48

48' : 19218-1803
RST3222

49' : 19242-1747
A 2094

50' : 19243-1746
UC 3916

50' : 19250-1730
OCC 521

52' : 19235-1630
HU 266

52' : 19234-1800
HJ 2866AB

53' : 19243-1751
ARA 493

56' : 19254-1733
ARA 295

58' : 19254-1739
OCC 460

59' : 19178-1655
RST3220

59' : 19256-1657
TDT1448

64' : 19261-1714
UC 3932

64' : 19218-1819
OCC 994

66' : 19247-1803
TDT1438

68' : 19261-1651
RST3226

68' : 19264-1708
OCC 475

70' : 19218-1605
TDT1400

70' : 19223-1824
HLD 149



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19217-1715 HO 272 AB (HD 181576)

 
 
19h 21m 41.64s -17° 14' 43.5" P.A. 58.00 sep 17.0 mag 7.45,11.30 Sp F6V dist. 76.28 pc (248.83 l.y.)
 
 
Coord 2000 19217-1715 Discov num HO  272 Comp AB Coord arcsec 2000 19 21 41.64 -17 14 43.5
Date first 1888 Date last 2020 Obs 12
Pa first 38 Pa last 57.5 P.A. Now (θ) 57.5°
Sep first 6.7 Sep last 16.98 Sep. Now (ρ) 16.98"
Mag pri 7.45 Mag sec 11.30 delta mag (ΔM) 3.85 Spectral class F6V (yellow-white)
Pri motion ra -067 Sec motion ra +002
Pri motion dec -039 Sec motion dec -005
Notes N L U (See Notes, Linear solution, Proper motion indicates non-physical)
rPM=0.992
This double is not physical.
 
 
19217-1715 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 181576 162516 19 21 42 -17 14 44 HO 272 AB 2020 12 58 17.0 7.45 11.30 3.85 <===
Show 162516 19 21 42 -17 14 44 HO 272 AC 2000 2 291 58.3 7.45 12.40 4.95
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 181576 Constellation Sagittarius SAO 162516 HIP 95172
Tycho2 6301-01335-1 Gaia DR2 4180762608077527040 HD 181576 BD BD-17 5598
Distance 76.28 Distance ly 248.83
 
 
WDS 19217-1715 HO 272 AB (HD 181576) : NOTES
 
 
discov_num notes refcode
HO 272 AB: Optical pair, based on study of relative motion of the components
using the method of apparent motion parameters. Kiy2008
AC: Nothing in the field appears to match Hough's measure. Ho_1899a
AB: Rectilinear solution by Hurowitz et al. (2014). USN2014b
 
 
REFERENCES
 
 
refcode metd author reference
Ho_1899a Ma j Hough, G.W. 1899AN....149..65H
Ho_1899a AN 149, 65, 1899
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 HO Hough, G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19217-1715 HO 272 AB 1959 8 52 12.3 7.40 11.90 F6V N 192141.69-171443.2
19217-1715 HO 272 AB 2000 9 55 15.7 7.45 11.30 F6V N D 192141.64-171443.5
19217-1715 HO 272 AB 2015 11 56 16.8 7.45 11.30 F6V NL U 192141.64-171443.5
19217-1715 HO 272 AB 2020 12 58 17.0 7.45 11.30 F6V NL U 192141.64-171443.5

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

 
 
WDS 19217-1715 HO 272 AB (HD 181576) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19217-1715 HO 272 AB (HD 181576) : MEASURES
 
 
No records found.

 
 
WDS 19217-1715 (HD 181576) : VIRTUAL EYEPIECE
 
 

19217-1715 HO 272A mag 7.45 Sp F6V 19217-1715 HO 272B sep 16.4 P.A. 56.30 mag 11.3 19217-1715 HO 272C sep 56.0 P.A. 292.00 mag 12.4 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 19217-1715 (HD 181576) : ALADIN DSS IMAGE @ 19h 21m 41.64s -17° 14' 43.5"
 
 
 
 
WDS 19217-1715 HO 272 AB (HD 181576) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19217-1715 HO 272AB distance=0' 19217-1710 GWP2844 distance=6' 19224-1719 HU 265 distance=11' 19209-1659 LEO 58 distance=21' 19207-1656 LEO 26 distance=24' 19238-1712 RST3223 distance=31' 19217-1751 OCC 543 distance=37' 19190-1654 RST3221 distance=44' 19229-1759 HWE 48 distance=48' 19218-1803 RST3222 distance=48' 19242-1747 A 2094 distance=49' 19243-1746 UC 3916 distance=50' 19250-1730 OCC 521 distance=50' 19235-1630 HU 266 distance=52' 19234-1800 HJ 2866BC distance=52' 19234-1800 HJ 2866AB distance=52' 19234-1800 ABH 116AD distance=52' 19234-1800 ABH 116AE distance=52' 19234-1800 ABH 116AF distance=52' 19234-1800 ABH 116AG distance=52' 19234-1800 HJ 2866AC distance=52' 19234-1800 OCC 461Aa,Ab distance=52' 19234-1800 HJ 5112CD distance=52' 19243-1751 ARA 493 distance=53' 19254-1733 ARA 295 distance=56' 19254-1739 OCC 460 distance=58' 19178-1655 RST3220 distance=59' 19256-1657 TDT1448 distance=59' 19261-1714 UC 3932 distance=64' 19218-1819 OCC 994 distance=64' 19247-1803 TDT1438 distance=66' 19261-1651 RST3226 distance=68' 19264-1708 OCC 475 distance=68' 19218-1605 TDT1400 distance=70' 19223-1824 HLD 149 distance=70' 19195-1818 LDS4808 distance=72' 19167-1739 HU 262 distance=76' 19217-1557 NOI 7 distance=78' 19172-1627 TDT1352 distance=81' 19239-1830 HLD 35 distance=82' 19274-1741 J 1758 distance=87' 19157-1729 TDT1329 distance=88' 19267-1810 UC 3936 distance=91' 19276-1749 J 1759 distance=91' 19226-1846 UC 3911 distance=92' 19181-1557 S 716 distance=94' 19151-1710 GWP2828 distance=95' 19177-1558 S 715 distance=97' 19152-1648 TDT1321 distance=98' 19183-1550 HU 264 distance=98' 19148-1721 HWE 97 distance=99' 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 19217-1715 HO 272 AB 58 17.0
Show 19217-1715 HO 272 AC 291 58.3
Show 19217-1710 GWP2844 160 13.6 6
Show 19224-1719 HU 265 42 0.7 11
Show 19209-1659 LEO 58 23 7.7 21
Show 19207-1656 LEO 26 101 2.4 24
Show 19238-1712 RST3223 204 5.6 31
Show 19217-1751 OCC 543 -1 0.0 37
Show 19190-1654 RST3221 55 0.3 44
Show 19229-1759 HWE 48 82 2.6 48
Show 19218-1803 RST3222 319 0.7 48
Show 19242-1747 A 2094 128 2.0 49
Show 19243-1746 UC 3916 100 84.7 50
Show 19250-1730 OCC 521 -1 0.0 50
Show 19235-1630 HU 266 181 4.1 52
Show 19234-1800 HJ 2866 BC 146 27.7 52
Show 19234-1800 HJ 2866 AB 53 22.7 52
Show 19234-1800 ABH 116 AD 148 38.1 52
Show 19234-1800 ABH 116 AE 99 121.7 52
Show 19234-1800 ABH 116 AF 77 104.2 52
Show 19234-1800 ABH 116 AG 329 74.3 52
Show 19234-1800 HJ 2866 AC 106 34.9 52
Show 19234-1800 OCC 461 Aa,Ab -1 0.1 52
Show 19234-1800 HJ 5112 CD 209 26.1 52
Show 19243-1751 ARA 493 6 10.3 53
Show 19254-1733 ARA 295 224 11.2 56
Show 19254-1739 OCC 460 -1 0.1 58
Show 19178-1655 RST3220 236 6.9 59
Show 19256-1657 TDT1448 291 0.5 59
Show 19261-1714 UC 3932 260 5.8 64
Show 19218-1819 OCC 994 -1 0.0 64
Show 19247-1803 TDT1438 307 1.6 66
Show 19261-1651 RST3226 218 0.2 68
Show 19264-1708 OCC 475 -1 0.2 68
Show 19218-1605 TDT1400 50 0.4 70
Show 19223-1824 HLD 149 21 1.3 70
Show 19195-1818 LDS4808 127 27.7 72
Show 19167-1739 HU 262 31 4.0 76
Show 19217-1557 NOI 7 29 0.0 78
Show 19172-1627 TDT1352 310 0.5 81
Show 19239-1830 HLD 35 201 1.9 82
Show 19274-1741 J 1758 34 4.9 87
Show 19157-1729 TDT1329 93 0.5 88
Show 19267-1810 UC 3936 207 62.1 91
Show 19276-1749 J 1759 314 6.8 91
Show 19226-1846 UC 3911 47 76.1 92
Show 19181-1557 S 716 196 5.0 94
Show 19151-1710 GWP2828 18 28.6 95
Show 19177-1558 S 715 17 8.4 97
Show 19152-1648 TDT1321 193 2.4 98
Show 19183-1550 HU 264 303 4.8 98

 
 
WDS 19217-1715 : COMPONENTS
 
 
  A B
B pa=56.3°
sep=16.44"
 
C pa=292.0°
sep=55.98"
pa=280.2°
sep=66.64"
 
 
19217-1715 A
 
 
Name HD 181576 Coord arcsec 2000 192141.64-171443.5 Mag 7.45 Spectral class F6V (yellow-white)
PmRA -67.00 PmDE -39.0 SAO 162516 HIP 95172
Tycho2 6301-01335-1 HD 181576 BD BD-17 5598
Tycho2
Tycho2 6301-01335-1 Pflag RAmdeg 290.42351887 DEmdeg -17.24542804
PmRA -74.5 PmDE -39.0 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.20 EpDEm 1990.81
Num 12 Q RAmdeg 1.0 Q DEmdeg 1.3 Q pmRA 1.1
Q pmDE 1.5 BTmag 7.945 E BTmag 0.016 VTmag 7.445
E VTmag 0.011 Prox 999 TYC T HIP 95172
CCDM RAdeg 290.42369778 DEdeg -17.24533667 EpRA 1990 1.71
EpDE 1990 1.54 E RAdeg 4.7 E DEdeg 5.7 Posflg
Corr 0.1
SAO
SAO 162516 DelFlag RA1950 PmRA1950 -0.0068
DE1950 PmDE1950 -0.031 Vmag 8 SpType F8
Double code Source 21 CatNum 7231 DM BD-17 5598
DMcomp BDsup HD 181576 M HD 0
GC RA1950rad 5.05625768 DE1950rad -0.30264626 PmRA2000 -0.0066
PmDE2000 -0.031
Hipparcos
Catalog H HIP 95172 Proxy RAhms 19 21 41.69
DEdms -17 14 43.2 Vmag 7.38 VarFlag R Vmag H
RAdeg 290.424 DEdeg -17.2453 AstroRef Plx 13.3
CCDM 19217-1715 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 181576 BD BD-17 5598
CD CP Dm number -17 5598 VIred 0.54
SpType F6V R SpType Coord arcsec 2000 192141.69-171443.2
Hipparcos 2
HIP 95172 Sn 5 So 0 Nc 1
RArad 5.0688499412 DErad -0.3009877945 Plx 13.11 PmRA -76.18
PmDE -39.89 E RArad 0.63 E DErad 0.41 E Plx 0.8
E pmRA 0.79 E pmDE 0.43 Hpmag 7.4872 E Hpmag 0.0009
SHp 0.01 VA 0 BV 0.484 E BV 0.011
VI 0.56
CCDM
Ccdm 19217-1715 RComp Comp A Note1
Note2 Discov num DRAs -0.49 DDEs 17.1
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.4 Sp F8 PmNote *
PmRA -97 PmDE -31 Dm number -17 5598 Cat1 BD
Name2 162516 Cat2 SAO HD 181576 M HD
ADS BDS A12337 M ADS BDS N IDS IDS 19159S1726A
HIC 95172
 
 
19217-1715 B
 
 
Coord arcsec 2000 192142.59-171434.4 Mag 11.3 PmRA 2.00 PmDE -5.0
Calc delta mag 3.85 Calc coord yes
CCDM
Ccdm 19217-1715 RComp Comp B Note1
Note2 Discov num HO 272 DRAs DDEs
R dRAs Year 1959 Theta 052 Rho 12.3
Obs 7 Vmag 11.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12337 M ADS BDS N IDS IDS 19159S1726B
HIC
 
 
19217-1715 C
 
 
Coord arcsec 2000 192138.02-171422.5 Mag 12.4 Calc delta mag 4.95 Calc coord yes
CCDM
Ccdm 19217-1715 RComp Comp C Note1
Note2 Discov num HO 272 DRAs DDEs
R dRAs Year 1897 Theta 301 Rho 4.9
Obs 1 Vmag 12.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A12337 M ADS BDS N IDS IDS 19159S1726C
HIC 95172