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Doubles in session


Current system
17577-2143
HDS 2530


Nearby doubles
15' : 17576-2158
ARA1506

31' : 17575-2113
BRT1511

35' : 17552-2149
ARA1504

36' : 17555-2203
ARA1830

40' : 17573-2223
BRT1510

40' : 17591-2218
ARA1833

52' : 17590-2231
SNA 75AB

52' : 17594-2228
SNA 76AB

52' : 17587-2232
B 367

55' : 18003-2224
TDT 627

64' : 18018-2208
ARA1837

65' : 17568-2036
J 1617AB

65' : 18004-2235
DON 877

66' : 18015-2221
ARA1836

66' : 17581-2249
ARA1832

67' : 17531-2125
HDS2524

73' : 17533-2221
HJ 4990

73' : 18011-2048
HLD 140

75' : 17530-2219
ARA1827

75' : 17535-2231
ARA1828

75' : 17529-2218
ARA1826

77' : 17552-2035
DON 869

79' : 17567-2026
DON 871

79' : 17536-2049
OL 102

80' : 17526-2108
J 1616

80' : 18033-2156
TDT 656



Selections
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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.

17577-2143 HDS 2530

 
 
17h 57m 40.96s -21° 43' 09.5" P.A. 179.00 sep 0.6 mag 10.21,12.68 Sp K3/K4V dist. 31.81 pc (103.76 l.y.)
 
 
Coord 2000 17577-2143 Discov num HDS2530 Comp Coord arcsec 2000 17 57 40.96 -21 43 09.5
Date first 1991 Date last 2019 Obs 8
Pa first 297 Pa last 179.4 P.A. Now (θ) 179.4°
Sep first 0.4 Sep last 0.558 Sep. Now (ρ) 0.558"
Mag pri 10.21 Mag sec 12.68 delta mag (ΔM) 2.47 Spectral class K3/K4V (yellow-orange)
Pri motion ra +024 Sec motion ra
Pri motion dec -162 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius HIP 87925 Tycho2 6262-00252-3 Gaia DR2 4070388266455534720
HD 163573 BD BD-21 4791 Distance 31.81 Distance ly 103.76
 
 
ORBITAL ELEMENTS
 
 
Period (P)59.9y± 2.1 Periastron (T)1998.25y± 0.56 Semi-major axis (a)0.514a± 0.013
Eccentricity (e)0.608± 0.019 Inclination (i)58.9°± 1.6 Longitude of periastron (ω)250.9°± 2.3
Node (Ω)143.7°± 2.6 Notes ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 102.1 0.156
2001 120.7 0.225
2002 130.7 0.288
2003 137.3 0.343
2004 142.1 0.389
2005 146.0 0.427
2006 149.3 0.459
2007 152.3 0.485
2008 154.9 0.507
2009 157.3 0.524
2010 159.7 0.538
2011 161.9 0.549
2012 164.0 0.557
2013 166.1 0.563
2014 168.1 0.567
2015 170.1 0.569
2016 172.1 0.569
2017 174.1 0.568
2018 176.2 0.565
2019 178.2 0.561
2020 180.3 0.556
2021 182.4 0.549
2022 184.6 0.542
2023 186.9 0.535
2024 189.2 0.526
2025 191.6 0.517
2026 194.1 0.508
2027 196.6 0.498
2028 199.3 0.488
2029 202.1 0.477
2030 205.0 0.467


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds17577-2143a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 17577-2143 HDS 2530 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2019c St j Tokovinin, A., Mason, B.D., Mendez, R.A., Horch, E.P. & Briceno, C. 2019AJ....158...48T
Tok2019c +orb AJ 158, 48, 2019
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
17577-2143 HDS2530 1991 1 297 0.4 10.21 12.68 K3/K4V 175740.96-214309.5
17577-2143 HDS2530 2008 2 156 0.5 10.21 12.68 K3/K4V D 175740.96-214309.5
17577-2143 HDS2530 2014 3 168 0.6 10.21 12.68 K3/K4V 175740.96-214309.5
17577-2143 HDS2530 2017 4 176 0.6 10.21 12.68 K3/K4V 175740.96-214309.5
17577-2143 HDS2530 2018 5 176 0.6 10.21 12.68 K3/K4V 175740.96-214309.5
17577-2143 HDS2530 2019 6 179 0.6 10.21 12.68 K3/K4V O 175740.96-214309.5

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

 
 
WDS 17577-2143 HDS 2530 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17577-2143 HDS 2530 : MEASURES
 
 
No records found.

 
 
WDS 17577-2143 : VIRTUAL EYEPIECE
 
 

17577-2143 HDS2530A mag 10.21 Sp K3/K4V 17577-2143 HDS2530B sep 0.6 P.A. 179.40 mag 12.68 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 17577-2143 : ALADIN DSS IMAGE @ 17h 57m 40.96s -21° 43' 09.5"
 
 
 
 
WDS 17577-2143 HDS 2530 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17577-2143 HDS2530 distance=0' 17576-2158 ARA1506 distance=15' 17575-2113 BRT1511 distance=31' 17552-2149 ARA1504 distance=35' 17555-2203 ARA1830 distance=36' 17573-2223 BRT1510 distance=40' 17591-2218 ARA1833 distance=40' 17590-2231 SNA 75AB distance=52' 17590-2231 SNA 75AC distance=52' 17590-2231 SNA 75AD distance=52' 17590-2231 SNA 75AE distance=52' 17594-2228 SNA 76AB distance=52' 17594-2228 SNA 76AC distance=52' 17594-2228 SNA 76AD distance=52' 17594-2228 SNA 76AE distance=52' 17587-2232 B 367 distance=52' 18003-2224 TDT 627 distance=55' 18018-2208 ARA1837 distance=64' 17568-2036 J 1617AB distance=65' 17568-2036 J 1617AC distance=65' 18004-2235 DON 877 distance=65' 18015-2221 ARA1836 distance=66' 17581-2249 ARA1832 distance=66' 17531-2125 HDS2524 distance=67' 17533-2221 HJ 4990 distance=73' 18011-2048 HLD 140 distance=73' 17530-2219 ARA1827 distance=75' 17535-2231 ARA1828 distance=75' 17529-2218 ARA1826 distance=75' 17552-2035 DON 869 distance=77' 17567-2026 DON 871 distance=79' 17536-2049 OL 102 distance=79' 17526-2108 J 1616 distance=80' 18033-2156 TDT 656 distance=80' 17577-2305 ARA2206 distance=83' 18000-2027 DON 876 distance=83' 18011-2252 ARA1835 distance=83' 18004-2258 ARA1834 distance=84' 17599-2023 TDT 619 distance=87' 18019-2247 BU 283AB distance=87' 18019-2247 BU 283AC distance=87' 18019-2247 FOX9030AD distance=87' 17585-2016 DON 875 distance=88' 18030-2233 ARA1838AB distance=90' 18030-2233 ABH 93AD distance=90' 18030-2233 ABH 93AE distance=90' 18030-2233 ABH 93AF distance=90' 18030-2233 ABH 93AG distance=90' 18030-2233 ABH 93AH distance=90' 18030-2233 ABH 93AI distance=90' 18030-2233 ABH 93AJ distance=90' 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 17577-2143 HDS2530 179 0.6
Show 17576-2158 ARA1506 17 13.5 15
Show 17575-2113 BRT1511 216 3.7 31
Show 17552-2149 ARA1504 163 9.4 35
Show 17555-2203 ARA1830 122 11.9 36
Show 17573-2223 BRT1510 221 5.2 40
Show 17591-2218 ARA1833 99 14.1 40
Show 17590-2231 SNA 75 AB 221 3.9 52
Show 17590-2231 SNA 75 AC 46 6.2 52
Show 17590-2231 SNA 75 AD 302 6.9 52
Show 17590-2231 SNA 75 AE 349 7.9 52
Show 17594-2228 SNA 76 AB 92 2.0 52
Show 17594-2228 SNA 76 AC 265 2.5 52
Show 17594-2228 SNA 76 AD 84 6.5 52
Show 17594-2228 SNA 76 AE 63 6.5 52
Show 17587-2232 B 367 217 1.8 52
Show 18003-2224 TDT 627 278 0.6 55
Show 18018-2208 ARA1837 289 12.8 64
Show 17568-2036 J 1617 AB 104 8.3 65
Show 17568-2036 J 1617 AC 248 10.6 65
Show 18004-2235 DON 877 96 2.7 65
Show 18015-2221 ARA1836 20 8.4 66
Show 17581-2249 ARA1832 15 6.9 66
Show 17531-2125 HDS2524 331 0.1 67
Show 17533-2221 HJ 4990 300 23.6 73
Show 18011-2048 HLD 140 265 2.3 73
Show 17530-2219 ARA1827 35 12.7 75
Show 17535-2231 ARA1828 94 7.0 75
Show 17529-2218 ARA1826 97 7.1 75
Show 17552-2035 DON 869 127 0.6 77
Show 17567-2026 DON 871 310 5.4 79
Show 17536-2049 OL 102 278 3.6 79
Show 17526-2108 J 1616 151 6.0 80
Show 18033-2156 TDT 656 268 1.0 80
Show 17577-2305 ARA2206 157 9.4 83
Show 18000-2027 DON 876 15 1.2 83
Show 18011-2252 ARA1835 304 9.8 83
Show 18004-2258 ARA1834 224 15.1 84
Show 17599-2023 TDT 619 198 1.5 87
Show 18019-2247 BU 283 AB 238 8.3 87
Show 18019-2247 BU 283 AC 33 13.6 87
Show 18019-2247 FOX9030 AD 265 24.5 87
Show 17585-2016 DON 875 325 6.0 88
Show 18030-2233 ARA1838 AB 138 8.3 90
Show 18030-2233 ABH 93 AD 354 34.1 90
Show 18030-2233 ABH 93 AE 159 40.7 90
Show 18030-2233 ABH 93 AF 186 66.0 90
Show 18030-2233 ABH 93 AG 222 24.9 90
Show 18030-2233 ABH 93 AH 255 28.4 90
Show 18030-2233 ABH 93 AI 234 73.3 90
Show 18030-2233 ABH 93 AJ 284 104.1 90

 
 
WDS 17577-2143 : COMPONENTS
 
 
  A
B pa=179.4°
sep=0.56"
 
 
17577-2143 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 175740.96-214309.5 Mag 10.21 Spectral class K3/K4V (yellow-orange)
PmRA 24.00 PmDE -162.0 HIP 87925 Tycho2 6262-00252-3
HD 163573 BD BD-21 4791
Tycho2
Tycho2 6262-00252-3 Pflag RAmdeg 269.42073829 DEmdeg -21.71968913
PmRA 31.6 PmDE -159.5 E RAmdeg 21 E DEmdeg 32
E pmRA 1.7 E pmDE 2.3 EpRAm 1985.86 EpDEm 1987.20
Num 6 Q RAmdeg 1.4 Q DEmdeg 1.4 Q pmRA 1.4
Q pmDE 1.4 BTmag 11.624 E BTmag 0.080 VTmag 10.193
E VTmag 0.038 Prox 999 TYC HIP 87925
CCDM AB RAdeg 269.42066000 DEdeg -21.71933361 EpRA 1990 2.01
EpDE 1990 2.02 E RAdeg 26.3 E DEdeg 37.4 Posflg
Corr -0.2
Hipparcos
Catalog H HIP 87925 Proxy H RAhms 17 57 40.96
DEdms -21 43 09.5 Vmag 9.99 VarFlag R Vmag G
RAdeg 269.421 DEdeg -21.7193 AstroRef A Plx 33.65
CCDM 17577-2143 N CCDM H Nsys 1 Ncomp 2
MultFlag C Source Qual C M HIP AB
Theta 297 Rho 0.35 HD 163573 BD BD-21 4791
CD CP Dm number -21 4791 VIred 1.46
SpType K3/K4V R SpType Coord arcsec 2000 175740.96-214309.5
Hipparcos 2
HIP 87925 Sn 15 So 3 Nc 2
RArad 4.7022778073 DErad -0.3790732993 Plx 31.44 PmRA 24.46
PmDE -160.75 E RArad 2.02 E DErad 1.32 E Plx 2.21
E pmRA 2.45 E pmDE 1.37 Hpmag 10.1012 E Hpmag 0.0027
SHp 0.023 VA 0 BV 1.282 E BV 0.005
VI 1.46
CCDM
Ccdm 17577-2143 RComp Comp A Note1
Note2 Discov num DRAs -1.02 DDEs -10.9
R dRAs 82 Year Theta Rho
Obs 2 Vmag 10.2 Sp K3 PmNote *
PmRA 24 PmDE -162 Dm number -21 4791 Cat1 BD
Name2 Cat2 HD 163573 M HD
ADS BDS M ADS BDS N IDS IDS
HIC 87925
 
 
17577-2143 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 175740.96-214310.1 Mag 12.68 Calc delta mag 2.47
Calc coord yes
CCDM
Ccdm 17577-2143 RComp Comp B Note1
Note2 Discov num HDS DRAs -1.04 DDEs -10.7
R dRAs 82 Year 1991 Theta 297 Rho 0.4
Obs 1 Vmag 12.7 Sp PmNote *
PmRA 24 PmDE -162 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS
HIC 87925