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Current system
20289-1749
SHJ 323 AB
Rho Cap


Nearby doubles
25' : 20277-1731
ARA 302

33' : 20273-1813
BU 60AB

47' : 20299-1702
FEN 38

49' : 20299-1835
SHJ 324AB

59' : 20293-1847
ARA 800

59' : 20330-1752
ARA 497AB

63' : 20311-1842
LDS4847

69' : 20268-1851
HU 586

80' : 20332-1658
RST3263

85' : 20274-1909
B 2485

90' : 20325-1637
SEE 512

100' : 20289-1928
SHN 245

101' : 20359-1738
ARA 304

102' : 20359-1758
HU 269

102' : 20221-1721
LDS6340

104' : 20325-1621
ARA 126

106' : 20346-1856
UC 4219AB

107' : 20224-1841
B 479

108' : 20234-1902
ARA 799

110' : 20364-1807
GWP2969AB

110' : 20363-1722
ARA 305

111' : 20362-1828
HJ 2980

111' : 20278-1559
KPP2635

114' : 20342-1913
UC 4217

114' : 20222-1647
H N 138

115' : 20263-1601
UC 4182



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.

20289-1749 SHJ 323 AB (Rho Cap)

 
 
20h 28m 51.62s -17° 48' 49.2" P.A. 189.00 sep 1.7 mag 4.97,6.88 Sp F3V dist. 30.27 pc (98.74 l.y.)
 
 
Coord 2000 20289-1749 Discov num SHJ 323 Comp AB Coord arcsec 2000 20 28 51.62 -17 48 49.2
Date first 1823 Date last 2018 Obs 78
Pa first 177 Pa last 188.9 P.A. Now (θ) 188.9°
Sep first 4.0 Sep last 1.684 Sep. Now (ρ) 1.684"
Mag pri 4.97 Mag sec 6.88 delta mag (ΔM) 1.91 Spectral class F3V (yellow-white)
Pri motion ra -003 Sec motion ra -003
Pri motion dec -017 Sec motion dec -017
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
20289-1749 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Rho Cap 163614 20 28 52 -17 48 49 SHJ 323 AB 2018 78 189 1.7 4.97 6.88 1.91 Y <===
Show 163614 20 28 52 -17 48 49 BU 61 AC 2008 10 150 54.6 4.97 13.30 8.33
Show 163617 20 28 52 -17 48 49 SHJ 323 AD 2011 28 150 258.7 4.97 6.68 1.71
Show 163614 20 28 52 -17 48 49 BU 61 BC 2015 5 149 53.5 6.88 12.50 5.62
Show 163617 20 29 01 -17 52 31 DOB 13 DE 2020 6 93 53.5 6.67 10.60 3.93
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Rho Cap Constellation Capricornus SAO 163614 HIP 101027
Tycho2 6333-02128-1 Gaia DR2 6860945174279114880 HD 194943 HR 7822
GC 28481 ADS 13887 GL Gl 791.1A BD BD-18 5689
Bayer Rho Capricorni Bayer name Rho Cap Flamsteed 11 Capricorni Flamsteed name 11 Cap
Distance 30.27 Distance ly 98.74 Bayer greek ρ Cap
 
 
ORBITAL ELEMENTS
 
 
Period (P)375.9934y± 35.3768 Periastron (T)1963.1816y± 0.9798 Semi-major axis (a)2.49532a± 0.28841
Eccentricity (e)0.96563± 0.00996 Inclination (i)112.355°± 2.353 Longitude of periastron (ω)125.842°± 5.728
Node (Ω)150.379°± 2.937 Notesn ReferenceIzm2019
Equinox Last observation2013 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 195.2 1.269
2001 194.9 1.295
2002 194.5 1.321
2003 194.2 1.346
2004 193.9 1.372
2005 193.6 1.397
2006 193.3 1.421
2007 193.0 1.446
2008 192.7 1.470
2009 192.4 1.494
2010 192.2 1.517
2011 191.9 1.541
2012 191.7 1.564
2013 191.4 1.587
2014 191.2 1.609
2015 191.0 1.632
2016 190.8 1.654
2017 190.6 1.676
2018 190.3 1.698
2019 190.1 1.719
2020 189.9 1.741
2021 189.8 1.762
2022 189.6 1.783
2023 189.4 1.804
2024 189.2 1.824
2025 189.0 1.845
2026 188.9 1.865
2027 188.7 1.885
2028 188.5 1.904
2029 188.4 1.924
2030 188.2 1.943


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


 
  


wds20289-1749c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20289-1749 SHJ 323 AB (Rho Cap) : NOTES
 
 
discov_num notes refcode
SHJ 323 rho Cap = 11 Cap.
Dob1927 DE measure earlier also erroneously attributed to BC.
AB: H 2 51. AD: H 6 29. MEv2010
AB: Quadrant determined in 1994.5246 by speckle imaging analysis. Hor1996
AD: H 6 29 = SHJ 322. AB: SHJ 323 = H 2 51. Dam2011
 
 
REFERENCES
 
 
refcode metd author reference
Dam2011 j Damm, F. ...................
Dam2011 private communication, 2011
Hor1996 S j Horch, E.P. Dinescu, D.I., Girard, T.M., van Altena, W.F., Lopez, C., & Franz, O. 1996AJ....111.1681H
Hor1996 AJ 111, 1681, 1996 (see also 1997 Inf. Circ. 131, 1 re: HR 4143) 1997IAUDS.131....1H
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 DOB Doberck, W.A.
390 SHJ South, J. & Herschel, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20289-1749 SHJ 323 AB 2004 65 194 1.3 4.97 6.88 F3V NOD 202851.62-174849.2
20289-1749 SHJ 323 AB 2009 66 215 1.4 4.97 6.88 F3V NOD 202851.62-174849.2
20289-1749 SHJ 323 AB 2013 71 191 1.6 4.97 6.88 F3V NO 202851.62-174849.2
20289-1749 SHJ 323 AB 2016 71 194 1.5 4.97 6.88 F3V NO 202851.62-174849.2
20289-1749 SHJ 323 AB 2018 74 190 1.7 4.97 6.88 F3V NO 202851.62-174849.2

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

 
 
WDS 20289-1749 SHJ 323 AB (Rho Cap) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20289-1749 SHJ 323 AB (Rho Cap) : MEASURES
 
 
No records found.

 
 
WDS 20289-1749 (Rho Cap) : VIRTUAL EYEPIECE
 
 

20289-1749 SHJ 323A mag 4.97 Sp F3V 20289-1749 BU 61B sep 0.2 P.A. 180.00 mag 6.88 Sp F2IV 20289-1749 BU 61C sep 54.0 P.A. 151.20 mag 13.3 20289-1749 DOB 13D sep 257.2 P.A. 149.80 mag 6.67 Sp K1III 20289-1749 DOB 13E sep 288.4 P.A. 141.30 mag 10.6 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 20289-1749 (Rho Cap) : ALADIN DSS IMAGE @ 20h 28m 51.62s -17° 48' 49.2"
 
 
 
 
WDS 20289-1749 SHJ 323 AB (Rho Cap) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20289-1749 SHJ 323AB distance=0' 20289-1749 BU 61BC distance=1' 20289-1749 DOB 13DE distance=5' 20277-1731 ARA 302 distance=25' 20273-1813 CHR 184Aa,Ab distance=33' 20273-1813 BU 60AB distance=33' 20273-1813 BU 296AC distance=33' 20299-1702 FEN 38 distance=47' 20299-1835 SHJ 324AB distance=49' 20293-1847 ARA 800 distance=59' 20330-1752 ARA 497AB distance=59' 20330-1752 GMC 27AC distance=59' 20311-1842 LDS4847 distance=63' 20268-1851 HU 586 distance=69' 20332-1658 RST3263 distance=80' 20274-1909 B 2485 distance=85' 20325-1637 SEE 512 distance=90' 20289-1928 SHN 245 distance=100' 20359-1738 ARA 304 distance=101' 20359-1758 HU 269 distance=102' 20221-1721 LDS6340 distance=102' 20325-1621 ARA 126 distance=104' 20346-1856 UC 4219AB distance=106' 20224-1841 B 479 distance=107' 20234-1902 ARA 799 distance=108' 20364-1807 GWP2969AB distance=110' 20363-1722 ARA 305 distance=110' 20364-1807 GWP2970BC distance=111' 20362-1828 HJ 2980 distance=111' 20278-1559 KPP2635 distance=111' 20342-1913 UC 4217 distance=114' 20222-1647 H N 138 distance=114' 20263-1601 UC 4182 distance=115' 20292-1943 GWP2958 distance=115' 20349-1632 UC 4222BC distance=116' 20209-1809 OCC 825 distance=116' 20210-1819 OCC 824 distance=116' 20349-1632 UC 4222AB distance=117' 20270-1554 OCC 23 distance=118' 20220-1854 DON1119 distance=119' 20370-1715 GWP2972 distance=122' 20282-1546 UC 4193 distance=124' 20363-1856 TOK 339AB distance=127' 20363-1856 TOK 339Aa,Ab distance=127' 20201-1730 UC 4149AB distance=127' 20201-1730 KPP4395AC distance=127' 20219-1909 ARA 797 distance=128' 20336-1602 ARA 127 distance=128' 20248-1943 HDS2919 distance=128' 20305-1955 OCC 190 distance=129' 20373-1653 OCC 827AB distance=134' 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 20289-1749 SHJ 323 AB 189 1.7
Show 20289-1749 SHJ 323 AD 150 258.7
Show 20289-1749 BU 61 AC 150 54.6
Show 20289-1749 BU 61 BC 149 53.5 1
Show 20289-1749 DOB 13 DE 93 53.5 5
Show 20277-1731 ARA 302 270 6.2 25
Show 20273-1813 CHR 184 Aa,Ab 50 0.1 33
Show 20273-1813 BU 60 AB 148 3.5 33
Show 20273-1813 BU 296 AC 40 37.9 33
Show 20299-1702 FEN 38 225 4.5 47
Show 20299-1835 SHJ 324 AB 238 22.0 49
Show 20293-1847 ARA 800 112 14.3 59
Show 20330-1752 ARA 497 AB 65 13.5 59
Show 20330-1752 GMC 27 AC 95 26.6 59
Show 20311-1842 LDS4847 23 2.9 63
Show 20268-1851 HU 586 118 0.6 69
Show 20332-1658 RST3263 79 0.8 80
Show 20274-1909 B 2485 116 1.8 85
Show 20325-1637 SEE 512 127 0.3 90
Show 20289-1928 SHN 245 -1 0.1 100
Show 20359-1738 ARA 304 212 7.4 101
Show 20359-1758 HU 269 340 2.7 102
Show 20221-1721 LDS6340 356 7.2 102
Show 20325-1621 ARA 126 289 5.5 104
Show 20346-1856 UC 4219 AB 177 61.5 106
Show 20224-1841 B 479 117 2.3 107
Show 20234-1902 ARA 799 304 6.6 108
Show 20364-1807 GWP2969 AB 40 109.0 110
Show 20363-1722 ARA 305 99 7.4 110
Show 20364-1807 GWP2970 BC 350 8.3 111
Show 20362-1828 HJ 2980 202 19.6 111
Show 20278-1559 KPP2635 307 24.4 111
Show 20342-1913 UC 4217 245 25.2 114
Show 20222-1647 H N 138 327 3.3 114
Show 20263-1601 UC 4182 102 8.5 115
Show 20292-1943 GWP2958 276 49.3 115
Show 20349-1632 UC 4222 BC 346 32.3 116
Show 20209-1809 OCC 825 -1 0.1 116
Show 20210-1819 OCC 824 -1 0.1 116
Show 20349-1632 UC 4222 AB 177 60.9 117
Show 20270-1554 OCC 23 -1 0.1 118
Show 20220-1854 DON1119 198 5.1 119
Show 20370-1715 GWP2972 69 144.3 122
Show 20282-1546 UC 4193 80 26.6 124
Show 20363-1856 TOK 339 AB 61 169.2 127
Show 20363-1856 TOK 339 Aa,Ab 44 1.7 127
Show 20201-1730 UC 4149 AB 105 51.9 127
Show 20201-1730 KPP4395 AC 76 5.1 127
Show 20219-1909 ARA 797 46 5.1 128
Show 20336-1602 ARA 127 281 9.3 128
Show 20248-1943 HDS2919 277 0.1 128

 
 
WDS 20289-1749 : COMPONENTS
 
 
  A B C D
B pa=180.0°
sep=0.20"
 
C pa=151.2°
sep=53.96"
pa=151.1°
sep=53.78"
 
D pa=149.8°
sep=257.19"
pa=149.7°
sep=257.01"
pa=149.4°
sep=203.25"
 
E pa=141.3°
sep=288.35"
pa=141.3°
sep=288.20"
pa=139.0°
sep=235.38"
pa=93.2°
sep=50.91"
 
 
20289-1749 A
 
 
Name Rho Cap Coord arcsec 2000 202851.62-174849.2 Mag 4.97 Spectral class F3V (yellow-white)
PmRA -3.00 PmDE -17.0 HIP 101027 Tycho2 6333-02128-1
HR 7822 GC 28481 ADS 13887 BD BD-18 5689
Bayer Rho Capricorni Bayer name Rho Cap Flamsteed 11 Capricorni Flamsteed name 11 Cap
Tycho2
Tycho2 6333-02128-1 Pflag P RAmdeg 307.21508142 DEmdeg -17.81372560
PmRA -2.7 PmDE -16.5 E RAmdeg 3 E DEmdeg 4
E pmRA 4.4 E pmDE 4.2 EpRAm 1991.80 EpDEm 1991.46
Num 3 Q RAmdeg 5.7 Q DEmdeg 0.8 Q pmRA 5.9
Q pmDE 0.8 BTmag 5.321 E BTmag 0.014 VTmag 4.967
E VTmag 0.009 Prox 11 TYC T HIP 101027
CCDM A RAdeg 307.21509528 DEdeg -17.81366861 EpRA 1990 1.81
EpDE 1990 1.48 E RAdeg 3.4 E DEdeg 3.7 Posflg D
Corr -0.1
Hipparcos
Catalog H HIP 101027 Proxy H RAhms 20 28 51.62
DEdms -17 48 49.2 Vmag 4.77 VarFlag R Vmag G
RAdeg 307.215 DEdeg -17.8137 AstroRef A Plx 33.04
CCDM 20289-1750 N CCDM I Nsys 2 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 199 Rho 1.013 HD 194943 BD BD-18 5689
CD CP Dm number -18 5689 VIred 0.44
SpType F3V R SpType Coord arcsec 2000 202851.62-174849.2
Hipparcos 2
HIP 101027 Sn 15 So 3 Nc 2
RArad 5.3619149822 DErad -0.3109071618 Plx 33.04 PmRA -14.98
PmDE -7.29 E RArad 0.4 E DErad 0.24 E Plx 0.46
E pmRA 0.45 E pmDE 0.27 Hpmag 4.8543 E Hpmag 0.0005
SHp 0.005 VA 0 BV 0.386 E BV 0.014
VI 0.44
 
 
20289-1749 B
 
 
Coord arcsec 2000 202851.62-174849.4 Coord calc 202851.62-174849.4 Mag 6.88 Spectral class F2IV (yellow-white)
PmRA -16.00 PmDE -8.0 SAO 163614 Tycho2 6333-02128-2
HD 194943 Flamsteed 11 Capricorni Flamsteed name 11 Cap Calc delta mag 1.91
Tycho2
Tycho2 6333-02128-2 Pflag P RAmdeg 307.21508142 DEmdeg -17.81372560
PmRA -2.7 PmDE -16.5 E RAmdeg 3 E DEmdeg 4
E pmRA 4.4 E pmDE 4.2 EpRAm 1991.80 EpDEm 1991.46
Num 3 Q RAmdeg 5.7 Q DEmdeg 0.8 Q pmRA 5.9
Q pmDE 0.8 BTmag 7.560 E BTmag 0.016 VTmag 6.884
E VTmag 0.011 Prox 11 TYC HIP 101027
CCDM B RAdeg 307.21497778 DEdeg -17.81394667 EpRA 1990 1.77
EpDE 1990 1.58 E RAdeg 4.7 E DEdeg 5.2 Posflg D
Corr -0.2
SAO
SAO 163614 DelFlag RA1950 PmRA1950 -0.0011
DE1950 PmDE1950 -0.02 Vmag 5 SpType F0
Double code Source 71 CatNum 766 DM BD-18 5689
DMcomp BDsup HD 194943 M HD 0
GC 28481 RA1950rad 5.34947784 DE1950rad -0.31381616 PmRA2000 -0.001
PmDE2000 -0.021
 
 
20289-1749 C
 
 
Coord arcsec 2000 202853.44-174936.5 Mag 13.3 PmRA -5.00 PmDE -17.0
Calc delta mag 8.33 Calc coord yes
 
 
20289-1749 D
 
 
Coord arcsec 2000 202900.69-175231.4 Coord calc 202900.69-175231.4 Mag 6.67 Spectral class K1III (yellow-orange)
PmRA 39.00 PmDE -119.0 SAO 163617 HIP 101040
Tycho2 6333-02111-1 HD 194960 GC 28492 BD BD-18 5691
Calc delta mag 1.7
Tycho2
Tycho2 6333-02111-1 Pflag RAmdeg 307.25288894 DEmdeg -17.87540450
PmRA 38.3 PmDE -117.8 E RAmdeg 4 E DEmdeg 5
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.33 EpDEm 1990.96
Num 16 Q RAmdeg 0.8 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.9 BTmag 7.917 E BTmag 0.016 VTmag 6.677
E VTmag 0.010 Prox 999 TYC T HIP 101040
CCDM RAdeg 307.25279722 DEdeg -17.87512500 EpRA 1990 1.77
EpDE 1990 1.46 E RAdeg 4.3 E DEdeg 5.0 Posflg
Corr -0.2
SAO
SAO 163617 DelFlag RA1950 PmRA1950 0.0029
DE1950 PmDE1950 -0.117 Vmag 6.7 SpType K0
Double code Source 70 CatNum 28492 DM BD-18 5691
DMcomp BDsup HD 194960 M HD 0
GC 28492 RA1950rad 5.35012346 DE1950rad -0.3148734 PmRA2000 0.0031
PmDE2000 -0.118
Hipparcos
Catalog H HIP 101040 Proxy RAhms 20 29 00.67
DEdms -17 52 30.4 Vmag 6.55 VarFlag R Vmag H
RAdeg 307.253 DEdeg -17.8751 AstroRef Plx 6.36
CCDM 20289-1750 N CCDM I Nsys 2 Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 194960 BD BD-18 5691
CD CP Dm number -18 5691 VIred 1.03
SpType K0III R SpType Coord arcsec 2000 202900.67-175230.4
Hipparcos 2
HIP 101040 Sn 5 So 0 Nc 1
RArad 5.3625728531 DErad -0.3119796596 Plx 7.97 PmRA 38.78
PmDE -118.55 E RArad 0.5 E DErad 0.27 E Plx 0.56
E pmRA 0.57 E pmDE 0.31 Hpmag 6.7133 E Hpmag 0.0011
SHp 0.007 VA 0 BV 1.08 E BV 0.008
VI 1.04
 
 
20289-1749 E
 
 
Coord arcsec 2000 202904.25-175234.2 Mag 10.6 PmRA 4.00 PmDE -13.0
Calc delta mag 5.63 Calc coord yes