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Doubles in session


Current system
18477+0916
HU 252 AB
HD 173923


Nearby doubles
23' : 18469+0856
J 2148AB

35' : 18480+0841
HU 253

35' : 18474+0841
ELP 43

42' : 18504+0900
BRT2610

48' : 18504+0850
J 530

51' : 18461+1000
J 1215

52' : 18462+1001
HEI 804

53' : 18510+0854
J 2532

55' : 18507+0843
J 1835

55' : 18510+0942
TDT1084

57' : 18508+0842
HU 256

59' : 18496+0823
HEI 805

60' : 18463+0821
TDT1045

62' : 18511+0949
J 2927AB

67' : 18478+1022
TDT1058

73' : 18477+1029
BRT1310

76' : 18455+1024
BPMA 58

77' : 18502+0807
J 2236

78' : 18463+1030
BPM 824

79' : 18503+0807
HU 254

81' : 18498+0801
HJ 869

82' : 18462+1034
BPM 823

82' : 18422+0917
BRT2179

83' : 18422+0916
CVE 12

84' : 18482+1039
STT 362AB

85' : 18535+0912
ROE 112AB



Selections
Full WDS
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.

18477+0916 HU 252 AB (HD 173923)

 
 
18h 47m 44.50s +09° 15' 47.5" P.A. 16.00 sep 0.1 mag 9.20,9.70 Sp B9 dist. 425.53 pc (1388.08 l.y.)
 
 
Coord 2000 18477+0916 Discov num HU  252 Comp AB Coord arcsec 2000 18 47 44.50 +09 15 47.5
Date first 1900 Date last 2021 Obs 13
Pa first 192 Pa last 16.1 P.A. Now (θ) 16.1°
Sep first 0.2 Sep last 0.097 Sep. Now (ρ) 0.097"
Mag pri 9.20 Mag sec 9.70 delta mag (ΔM) 0.5 Spectral class B9 (blue-white)
Pri motion ra -001 Sec motion ra
Pri motion dec +009 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18477+0916 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 123925 18 47 44 +09 15 48 GII 271 Aa,Ab 2013 1 175 0.1 10.00 10.00 0.00
Show HD 173923 123925 18 47 44 +09 15 48 HU 252 AB 2021 13 16 0.1 9.20 9.70 0.50 <===
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173923 Constellation Aquila SAO 123925 HIP 92225
Tycho2 1026-00202-1 HD 173923 BD BD+09 3873 Distance 425.53
Distance ly 1388.08
 
 
WDS 18477+0916 HU 252 AB (HD 173923) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Gii1991 Ma j Gili, R. 1991AN....312...41G
Gii1991 AN 312, 41, 1991
Gii1994 M+ j Gili, R. (Couteau & Gili) 1994A&AS..106..377G
Gii1994 +C A&AS 106, 377, 1994
Gii1997 M+ j Gili, R. & Couteau, P. 1997A&AS..126....1G
Gii1997 +C A&AS 126, 1, 1997
Gii2001 C j Gili, R. & Bonneau, D. 2001A&A...378..954G
Gii2001 A&A 378, 954, 2001
Gii2008 C j Gili, R. 2008IAUDS.165....1G
Gii2008 Inf. Circ. 165, 1, 2008
Gii2009 S j Gili, R. 2009IAUDS.168....1G
Gii2009 +orb Inf. Circ. 168, 1, 2009
Gii2009b C j Gili, R. & Agati, J.-L. 2009O&T....73....9G
Gii2009b +S Obs. et Travaux 73, 9, 2009
Gii2009c C j Gili, R. & Agati, J.-L. 2009O&T....74...14G
Gii2009c +S Obs. et Travaux 74, 14, 2009
Gii2012 S j Gili, R. & Prieur, J.-L. 2012AN....333..727G
Gii2012 +Cl AN 333, 727, 2012
Gii2016 S j Gili, R. 2016IAUDS.190....4G
Gii2016 +Cl Inf. Circ. 190, 4, 2016
Gii2016b Cl Gili, R.
Gii2016b private comm. (email 27 Aug 2016)
Gii2020 S Gili, R., Prieur, J.-L., Rivet, J.-P., Scardia, M., Pansecchi, L., Argyle, R.W., 2020AN....341..441G
Gii2020 +Cl Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D. & Maccarini, L.
Gii2020 AN 341, 441, 2020
Gii2021 S Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L., 2021AN....342..865G
Gii2021 Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2021 Maccarini, L. & Serot, J.
Gii2021 AN 342, 865, 2021
Gii2022 S Gili, R., Prieur, J.-L., Rivet, J.-P., Vakili, F., Scardia, M., Pansecchi, L., 2022AN....34324008G
Gii2022 Argyle, R.W., Ling, J.F., Piccotti, L., Aristidi, E., Koechlin, L., Bonneau, D.,
Gii2022 Maccarini, L. & Serot, J.
Gii2022 AN 343, 24008, 2022
Gii2022 errata for Gii2022 (source of code "P" measures in wds) 2023AN....34437001G
Gii2022 AN 344, 37001, 2023
Hu_1896 not - Hussey, W.F. 1896PASP....8..183H
Hu_1896 PASP 8, 183, 1896
Hu_1897 Ma - Hussey, W.J. 1897AJ.....17...97H
Hu_1897 AJ 17, 97, 1897
Hu_1898 Ma j Hussey, W.J. 1898AJ.....18..145H
Hu_1898 AJ 18, 145, 1898
Hu_1899 Ma j Hussey, W.J. 1899AN....150..175H
Hu_1899 AN 150, 175, 1899
Hu_1900a Ma - Hussey, W.J. 1900AJ.....20..192H
Hu_1900a AJ 20, 192, 1900
Hu_1900b Ma - Hussey, W.J. 1900AJ.....21...35H
Hu_1900b AJ 21, 35, 1900
Hu_1900c Ma j Hussey, W.J. 1900AN....152..329H
Hu_1900c AN 152, 329, #3645, 1900
Hu_1901a Ma j Hussey, W.J. 1901PLicO...5.....H
Hu_1901a +orb Pub. Lick Obs. 5, 1901
Hu_1901b Ma j Hussey, W.J. 1901LicOB...1...82H
Hu_1901b Lick Obs. Bull. 1, 82, 1901
Hu_1902a Ma j Hussey, W.J. 1902LicOB...1..161H
Hu_1902a Lick Obs. Bull. 1, 161, 1902
Hu_1902b Ma j Hussey, W.J. 1902LicOB...2....1H
Hu_1902b Lick Obs. Bull. 2, 1, 1902
Hu_1903a Ma j Hussey, W.J. 1903LicOB...2...73H
Hu_1903a Lick Obs. Bull. 2, 73, 1903
Hu_1903b Ma j Hussey, W.J. 1903LicOB...2..115H
Hu_1903b Lick Obs. Bull. 2, 115, 1903
Hu_1904a Ma j Hussey, W.J. 1904LicOB...2..180H
Hu_1904a Lick Obs. Bull. 2, 180, 1904
Hu_1904b Ma - Hussey, W.J. 1904LicOB...3...53H
Hu_1904b Lick Obs. Bull. 3, 53, 1904
Hu_1905a Ma - Hussey, W.J. 1905LicOB...3...95H
Hu_1905a Lick Obs. Bull. 3, 95, 1905
Hu_1905b Ma - Hussey, W.J. 1905LicOB...3..116H
Hu_1905b Lick Obs. Bull. 3, 116, 1905
Hu_1905c Ma - Hussey, W.J. 1905LicOB...3..151H
Hu_1905c Lick Obs. Bull. 3, 151, 1905
Hu_1906A Ma - Hussey, W.J. 1906MmRAS..56....1L
Hu_1906A cited by Lewis (MemRAS 56, 1, 1906)
Hu_1906B Ma - Hussey, W.J. 1906QB821.B972.....
Hu_1906B cited in BDS (Burnham Double Star Cat.), 1906
Hu_1907 Ma - Hussey, W.J. 1907LicOB...4..124H
Hu_1907 Lick Obs. Bull. 4, 124, 1907
Hu_1910 Ma - Hussey, W.J. 1910AJ.....21..105H
Hu_1910 AJ 21, 105, 1910
Hu_1911 Ma - Hussey, W.J. 1911LicOB...6..182H
Hu_1911 Lick Obs. Bull. 6, 182, 1911
Hu_1912a Ma - Hussey, W.J. 1915POMic...1..147H
Hu_1912a Pub. Univ. Michigan Obs. 1, 147, 1912
Hu_1912b Ma - Hussey, W.J. 1915POMic...1..160H
Hu_1912b Pub. Univ. Michigan Obs. 1, 160, 1912
Hu_1912c Ma - Hussey, W.J. 1915POMic...1..167H
Hu_1912c Pub. Univ. Michigan Obs. 1, 167, 1912
Hu_1927A Ma - Hussey, W.J. 1927sdsc.book......
Hu_1927A cited in SDS (Southern Double Star Cat.), 1927
Hu_1932A Ma - Hussey, W.J. 1932QB821.A43......
Hu_1932A cited in ADS (Aitken Double Star Cat.), 1932
Hu_9999 Ma - Hussey, W.J. ...................
Hu_9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18477+0916 HU 252 AB 2021 13 16 0.1 9.20 9.70 B9 184744.50+091547.5

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

 
 
WDS 18477+0916 HU 252 AB (HD 173923) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18477+0916 HU 252 AB (HD 173923) : MEASURES
 
 
No records found.

 
 
WDS 18477+0916 (HD 173923) : VIRTUAL EYEPIECE
 
 

18477+0916 HU 252A mag 9.2 Sp B9 18477+0916 GII 271Ab sep 0.1 P.A. 175.50 mag 10 18477+0916 HU 252B sep 0.1 P.A. 15.90 mag 9.7 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 18477+0916 (HD 173923) : ALADIN DSS IMAGE @ 18h 47m 44.50s +09° 15' 47.5"
 
 
 
 
WDS 18477+0916 HU 252 AB (HD 173923) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18477+0916 HU 252AB distance=1' 18477+0916 GII 271Aa,Ab distance=1' 18469+0856 J 2148AB distance=23' 18469+0856 DAM 120BC distance=23' 18480+0841 HU 253 distance=35' 18474+0841 ELP 43 distance=35' 18504+0900 BRT2610 distance=42' 18504+0850 J 530 distance=48' 18461+1000 J 1215 distance=51' 18462+1001 HEI 804 distance=52' 18510+0854 J 2532 distance=53' 18507+0843 J 1835 distance=55' 18510+0942 TDT1084 distance=55' 18508+0842 HU 256 distance=57' 18496+0823 HEI 805 distance=59' 18463+0821 TDT1045 distance=60' 18511+0949 J 2927AB distance=62' 18511+0949 DAM 123AC distance=62' 18478+1022 TDT1058 distance=67' 18477+1029 BRT1310 distance=73' 18455+1024 BPMA 58 distance=76' 18502+0807 J 2236 distance=77' 18463+1030 BPM 824 distance=78' 18503+0807 HU 254 distance=79' 18498+0801 HJ 869 distance=81' 18462+1034 BPM 823 distance=82' 18422+0917 BRT2179 distance=82' 18422+0916 CVE 12 distance=83' 18482+1039 STT 362AB distance=84' 18482+1039 STT 362AC distance=84' 18515+1019 BU 1464CD distance=85' 18535+0912 ROE 112BC distance=85' 18535+0912 ROE 112AB distance=85' 18535+0912 ROE 112AC distance=85' 18513+1022 SMA 82 distance=85' 18515+1019 HJ 870AB distance=86' 18515+1019 HJ 870AC distance=86' 18458+0755 TDT1040 distance=87' 18497+1038 BPM 851 distance=87' 18456+0754 TDT1038 distance=88' 18432+1013 GWP2795 distance=88' 18485+1045 STF2396AB distance=90' 18485+1045 STF2396AC distance=90' 18485+1045 STF2396AD distance=90' 18485+1045 HLA 15AE distance=90' 18497+1041 STF2402 distance=90' 18442+1030 BPM 813BC distance=90' 18432+1017 BPM 807 distance=91' 18456+1041 BPM 819 distance=91' 18442+1030 BPM 812AB distance=91' 18448+1036 BPM 815 distance=92' 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 18477+0916 HU 252 AB 16 0.1 1
Show 18477+0916 GII 271 Aa,Ab 175 0.1 1
Show 18469+0856 J 2148 AB 168 5.2 23
Show 18469+0856 DAM 120 BC 91 8.1 23
Show 18480+0841 HU 253 311 0.7 35
Show 18474+0841 ELP 43 58 7.0 35
Show 18504+0900 BRT2610 353 4.0 42
Show 18504+0850 J 530 185 3.7 48
Show 18461+1000 J 1215 128 1.8 51
Show 18462+1001 HEI 804 129 1.7 52
Show 18510+0854 J 2532 277 4.7 53
Show 18507+0843 J 1835 176 8.5 55
Show 18510+0942 TDT1084 6 0.5 55
Show 18508+0842 HU 256 41 4.3 57
Show 18496+0823 HEI 805 214 2.8 59
Show 18463+0821 TDT1045 302 0.7 60
Show 18511+0949 J 2927 AB 304 3.1 62
Show 18511+0949 DAM 123 AC 143 5.5 62
Show 18478+1022 TDT1058 212 0.4 67
Show 18477+1029 BRT1310 21 3.9 73
Show 18455+1024 BPMA 58 183 160.7 76
Show 18502+0807 J 2236 185 4.6 77
Show 18463+1030 BPM 824 69 56.1 78
Show 18503+0807 HU 254 157 1.1 79
Show 18498+0801 HJ 869 260 10.1 81
Show 18462+1034 BPM 823 218 81.7 82
Show 18422+0917 BRT2179 250 5.4 82
Show 18422+0916 CVE 12 349 3.5 83
Show 18482+1039 STT 362 AB 340 7.7 84
Show 18482+1039 STT 362 AC 105 12.0 84
Show 18515+1019 BU 1464 CD 23 22.0 85
Show 18535+0912 ROE 112 BC 223 36.3 85
Show 18535+0912 ROE 112 AB 239 7.3 85
Show 18535+0912 ROE 112 AC 226 43.3 85
Show 18513+1022 SMA 82 244 13.9 85
Show 18515+1019 HJ 870 AB 219 11.6 86
Show 18515+1019 HJ 870 AC 248 65.8 86
Show 18458+0755 TDT1040 186 2.3 87
Show 18497+1038 BPM 851 221 85.7 87
Show 18456+0754 TDT1038 238 0.4 88
Show 18432+1013 GWP2795 55 31.6 88
Show 18485+1045 STF2396 AB 337 82.0 90
Show 18485+1045 STF2396 AC 5 203.2 90
Show 18485+1045 STF2396 AD 35 203.7 90
Show 18485+1045 HLA 15 AE 50 10.0 90
Show 18497+1041 STF2402 208 1.5 90
Show 18442+1030 BPM 813 BC 135 84.1 90
Show 18432+1017 BPM 807 95 82.6 91
Show 18456+1041 BPM 819 319 45.2 91
Show 18442+1030 BPM 812 AB 95 77.0 91
Show 18448+1036 BPM 815 193 28.3 92

 
 
WDS 18477+0916 : COMPONENTS
 
 
  A Ab
Ab pa=175.5°
sep=0.14"
 
B pa=15.9°
sep=0.10"
pa=3.8°
sep=0.23"
 
 
18477+0916 A
 
 
Name HD 173923 Coord arcsec 2000 184744.50+091547.5 Mag 9.2 Spectral class B9 (blue-white)
PmRA -1.00 PmDE 9.0 SAO 123925 HIP 92225
Tycho2 1026-00202-1 HD 173923 BD BD+09 3873
Tycho2
Tycho2 1026-00202-1 Pflag RAmdeg 281.93541437 DEmdeg 9.26316405
PmRA -1.9 PmDE -10.1 E RAmdeg 9 E DEmdeg 11
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.14 EpDEm 1990.72
Num 8 Q RAmdeg 0.8 Q DEmdeg 1.3 Q pmRA 0.8
Q pmDE 1.3 BTmag 9.291 E BTmag 0.020 VTmag 9.107
E VTmag 0.019 Prox 999 TYC T HIP 92225
CCDM RAdeg 281.93541833 DEdeg 9.26318667 EpRA 1990 1.81
EpDE 1990 1.75 E RAdeg 9.1 E DEdeg 10.8 Posflg
Corr 0.0
SAO
SAO 123925 DelFlag RA1950 PmRA1950 -0.0003
DE1950 PmDE1950 0.002 Vmag 8.7 SpType B9
Double code Source 33 CatNum 8816 DM BD+09 3873
DMcomp BDsup HD 173923 M HD 0
GC RA1950rad 4.91029131 DE1950rad 0.16069683 PmRA2000 -0.0001
PmDE2000 0.001
Hipparcos
Catalog H HIP 92225 Proxy RAhms 18 47 44.50
DEdms +09 15 47.5 Vmag 9.08 VarFlag R Vmag H
RAdeg 281.935 DEdeg 9.26319 AstroRef Plx 2.69
CCDM 18477+0916 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 173923 BD BD+09 3873
CD CP Dm number +09 3873 VIred 0.19
SpType B9 R SpType Coord arcsec 2000 184744.50+091547.5
Hipparcos 2
HIP 92225 Sn 5 So 0 Nc 1
RArad 4.9207012528 DErad 0.1616731019 Plx 2.35 PmRA -1.85
PmDE -7.15 E RArad 0.84 E DErad 0.61 E Plx 0.94
E pmRA 0.91 E pmDE 0.7 Hpmag 9.1386 E Hpmag 0.0037
SHp 0.025 VA 0 BV 0.18 E BV 0.024
VI 0.2
CCDM
Ccdm 18477+0916 RComp Comp A Note1
Note2 Discov num DRAs 2.51 DDEs -11.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.2 Sp B9 PmNote *
PmRA 5 PmDE 20 Dm number +09 3873 Cat1 BD
Name2 +09 2311 Cat2 AGK2/3 HD 173923 M HD
ADS BDS A11687 M ADS BDS N IDS IDS 18430N0909A
HIC 92225
 
 
18477+0916 Ab
 
 
Coord arcsec 2000 184744.50+091547.4 Mag 10 Calc coord yes
 
 
18477+0916 B
 
 
Coord arcsec 2000 184744.50+091547.6 Mag 9.7 Calc delta mag 0.3 Calc coord yes
CCDM
Ccdm 18477+0916 RComp Comp B Note1
Note2 Discov num HU 252 DRAs DDEs
R dRAs Year 1958 Theta 153 Rho 0.1
Obs 8 Vmag 9.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11687 M ADS BDS N IDS IDS 18430N0909B
HIC 92225