18368+2120 HU 323 (HD 171973)

 
 
18h 36m 48.02s +21° 20' 02.4" P.A. 143.00 sep 0.2 mag 8.73,9.35 Sp A0 dist. 704.23 pc (2297.2 l.y.)
 
 
Coord 2000 18368+2120 Discov num HU  323 Comp Coord arcsec 2000 18 36 48.02 +21 20 02.4
Date first 1901 Date last 2013 Obs 10
Pa first 153 Pa last 142.5 P.A. Now (θ) 142.5°
Sep first 0.2 Sep last 0.217 Sep. Now (ρ) 0.217"
Mag pri 8.73 Mag sec 9.35 delta mag (ΔM) 0.62 Spectral class A0 (white)
Pri motion ra +000 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 171973 Constellation Hercules SAO 86242 HIP 91252
Tycho2 1582-01472-1 Gaia DR2 4531839758896577408 HD 171973 BD BD+21 3495
Distance 704.23 Distance ly 2297.2
 
 
WDS 18368+2120 HU 323 (HD 171973) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
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
18368+2120 HU 323 1991 7 136 0.2 8.73 9.35 A0 183648.02+212002.4
18368+2120 HU 323 2007 9 138 0.2 8.73 9.35 A0 183648.02+212002.4
18368+2120 HU 323 2013 10 143 0.2 8.73 9.35 A0 183648.02+212002.4

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

 
 
WDS 18368+2120 HU 323 (HD 171973) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18368+2120 HU 323 (HD 171973) : MEASURES
 
 
No records found.

 
 
WDS 18368+2120 (HD 171973) : VIRTUAL EYEPIECE
 
 

18368+2120 HU  323A mag 8.73 Sp A0 18368+2120 HU  323B sep 0.2 P.A. 144.40 mag 9.35 virtual eyepiece
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Radius:
Components only
 
 
WDS 18368+2120 (HD 171973) : ALADIN DSS IMAGE @ 18h 36m 48.02s +21° 20' 02.4"
 
 
 
 
WDS 18368+2120 HU 323 (HD 171973) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18368+2120  HU  323 distance=0' 18355+2104  STF2345 distance=24' 18363+2143  COU 206 distance=25' 18353+2145  COU 205 distance=33' 18343+2101  TDT 939 distance=41' 18393+2056  STF2360 distance=43' 18366+2206  HJ 2834 distance=47' 18335+2102  COU 204AB distance=50' 18359+2018  L    60 distance=58' 18408+2142  HU  324 distance=61' 18412+2111  TDT 994 distance=62' 18389+2019  L    63 distance=64' 18369+2021  L    61 distance=68' 18389+2222  COU 207 distance=69' 18399+2019  L    64 distance=70' 18369+2019  L    62 distance=73' 18333+2219  LEP  89 distance=77' 18361+2003  TDS 931 distance=78' 18425+2116  BRT2448 distance=80' 18331+2221  KPP 419 distance=80' 18320+2031  LAW  18 distance=83' 18354+2243  SLE 212 distance=86' 18324+2221  J   807 distance=87' 18406+2230  TDT 989 distance=88' 18316+2030  COU 119 distance=89' 18420+2221  TDT1008 distance=95' 18426+2209  COU 208 distance=95' 18311+2216  COU  15 distance=99' 18299+2141  TDS 926 distance=99' 18310+2221  J   806 distance=102' 18351+2302  TDT 948 distance=105' 18343+2258  TDT 938 distance=105' 18293+2144  J  2913AB distance=106' 18293+2144  J  2913AC distance=106' 18339+2300  POU3431 distance=108' 18443+2052  HU  325 distance=109' 18293+2052  TDT 904 distance=110' 18365+1931  FMR 231AB distance=110' 18365+1931  RAO 394Aa,Ab distance=110' 18378+2310  POU3443 distance=111' 18334+2301  J   463AB distance=112' 18334+2301  J   463AB,C distance=112' 18388+2309  POU3451 distance=113' 18319+2253  SLE 188 distance=115' 18405+1936  OSO 102AB distance=117' 18405+1936  OSO 102AC distance=117' 18368+2320  POU3438AB distance=120' 18368+2320  POU3439AC distance=120' 18430+1955  TDS 936 distance=123' 18443+2224  HU 1657 distance=123' 18369+2323  TDT 958 distance=123' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 18368+2120 HU 323 143 0.2
Show 18355+2104 STF2345 225 12.3 24
Show 18363+2143 COU 206 149 0.1 25
Show 18353+2145 COU 205 148 0.1 33
Show 18343+2101 TDT 939 180 0.5 41
Show 18393+2056 STF2360 358 2.5 43
Show 18366+2206 HJ 2834 246 19.7 47
Show 18335+2102 COU 204 AB 130 11.9 50
Show 18359+2018 L 60 188 2.5 58
Show 18408+2142 HU 324 113 0.9 61
Show 18412+2111 TDT 994 27 0.7 62
Show 18389+2019 L 63 63 2.7 64
Show 18369+2021 L 61 279 5.4 68
Show 18389+2222 COU 207 298 1.6 69
Show 18399+2019 L 64 74 4.1 70
Show 18369+2019 L 62 314 6.2 73
Show 18333+2219 LEP 89 302 49.1 77
Show 18361+2003 TDS 931 49 1.2 78
Show 18425+2116 BRT2448 294 3.8 80
Show 18331+2221 KPP 419 170 3.7 80
Show 18320+2031 LAW 18 18 1.4 83
Show 18354+2243 SLE 212 255 14.3 86
Show 18324+2221 J 807 310 3.7 87
Show 18406+2230 TDT 989 233 2.4 88
Show 18316+2030 COU 119 229 0.7 89
Show 18420+2221 TDT1008 41 2.4 95
Show 18426+2209 COU 208 304 0.3 95
Show 18311+2216 COU 15 118 1.9 99
Show 18299+2141 TDS 926 253 0.9 99
Show 18310+2221 J 806 240 2.4 102
Show 18351+2302 TDT 948 222 2.5 105
Show 18343+2258 TDT 938 67 0.9 105
Show 18293+2144 J 2913 AB 117 3.2 106
Show 18293+2144 J 2913 AC 158 15.5 106
Show 18339+2300 POU3431 342 6.8 108
Show 18443+2052 HU 325 6 0.4 109
Show 18293+2052 TDT 904 223 0.7 110
Show 18365+1931 FMR 231 AB 86 15.1 110
Show 18365+1931 RAO 394 Aa,Ab 233 0.2 110
Show 18378+2310 POU3443 43 2.8 111
Show 18334+2301 J 463 AB 224 1.9 112
Show 18334+2301 J 463 AB,C 97 23.8 112
Show 18388+2309 POU3451 310 7.4 113
Show 18319+2253 SLE 188 99 17.7 115
Show 18405+1936 OSO 102 AB 99 17.3 117
Show 18405+1936 OSO 102 AC 36 20.3 117
Show 18368+2320 POU3438 AB 359 8.5 120
Show 18368+2320 POU3439 AC 56 15.2 120
Show 18430+1955 TDS 936 157 2.0 123
Show 18443+2224 HU 1657 244 0.3 123
Show 18369+2323 TDT 958 255 0.4 123

 
 
WDS 18368+2120 : COMPONENTS
 
 
  A
B pa=144.4°
sep=0.21"
 
 
18368+2120 A
 
 
Componente originario normalizzato AB Name HD 171973 Coord arcsec 2000 183648.02+212002.4 Mag 8.73
Spectral class A0 (white) PmRA 0.00 PmDE -6.0 SAO 86242
HIP 91252 Tycho2 1582-01472-1 HD 171973 BD BD+21 3495
Tycho2
Tycho2 1582-01472-1 Pflag RAmdeg 279.20006927 DEmdeg 21.33399813
PmRA -0.3 PmDE 2.2 E RAmdeg 5 E DEmdeg 5
E pmRA 1.1 E pmDE 1.0 EpRAm 1991.21 EpDEm 1991.16
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.3 BTmag 8.325 E BTmag 0.016 VTmag 8.209
E VTmag 0.012 Prox 999 TYC T HIP 91252
CCDM AB RAdeg 279.20007000 DEdeg 21.33399306 EpRA 1990 1.58
EpDE 1990 1.58 E RAdeg 5.4 E DEdeg 5.3 Posflg P
Corr 0.0
SAO
SAO 86242 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0.01 Vmag 8.3 SpType A0
Double code Source 35 CatNum 6567 DM BD+21 3495
DMcomp BDsup HD 171973 M HD 0
GC RA1950rad 4.86364779 DE1950rad 0.3715947 PmRA2000 -0.0004
PmDE2000 0.01
Hipparcos
Catalog H HIP 91252 Proxy H RAhms 18 36 48.02
DEdms +21 20 02.4 Vmag 8.2 VarFlag R Vmag H
RAdeg 279.2 DEdeg 21.334 AstroRef * Plx 1.18
CCDM 18368+2120 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 136 Rho 0.174 HD 171973 BD BD+21 3495
CD CP Dm number +21 3495 VIred 0.05
SpType A0 R SpType Coord arcsec 2000 183648.02+212002.4
Hipparcos 2
HIP 91252 Sn 55 So 3 Nc 2
RArad 4.8729604799 DErad 0.3723484806 Plx 1.42 PmRA 0.51
PmDE 2.04 E RArad 0.53 E DErad 0.54 E Plx 0.91
E pmRA 0.67 E pmDE 0.74 Hpmag 8.2424 E Hpmag 0.0013
SHp 0.013 VA 0 BV 0.089 E BV 0.013
VI 0.1
CCDM
Ccdm 18368+2120 RComp Comp A Note1
Note2 Discov num DRAs 0.02 DDEs 1.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.9 Sp A0 PmNote *
PmRA 2 PmDE -8 Dm number +21 3495 Cat1 BD
Name2 +21 1871 Cat2 AGK2/3 HD 171973 M HD
ADS BDS A11501 M ADS BDS N IDS IDS 18325N2115A
HIC 91252
 
 
18368+2120 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183648.03+212002.2 Mag 9.35 Calc delta mag 0.62
Calc coord yes
CCDM
Ccdm 18368+2120 RComp Comp B Note1
Note2 Discov num HU 323 DRAs DDEs
R dRAs Year 1943 Theta 168 Rho 0.2
Obs 4 Vmag 10.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A11501 M ADS BDS N N IDS IDS 18325N2115B
HIC 91252