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Doubles in session


Current system
09442-2746
FIN 326
The Ant


Nearby doubles
12' : 09448-2738
B 2696

26' : 09449-2723
LDS 280

38' : 09423-2720
TDS6755

42' : 09455-2824
B 188

50' : 09478-2736
HLD 99

51' : 09465-2705
B 189

54' : 09419-2829
TDS6754

59' : 09477-2823
UC 1830

60' : 09481-2816
SEE 116

67' : 09442-2640
B 2695

76' : 09429-2633
RST2649

78' : 09397-2835
HTS 26AB

78' : 09467-2857
BRT2971

86' : 09387-2704
RST1442

90' : 09507-2807
DAM1791

91' : 09508-2807
OL 41

97' : 09387-2644
B 187AB

100' : 09510-2706
RST 438

102' : 09487-2625
I 205AB

103' : 09416-2922
B 2692

103' : 09509-2839
BRT2973

109' : 09398-2918
UC 1818

110' : 09360-2731
B 185

112' : 09446-2937
RST 427

117' : 09503-2622
DAM1788

118' : 09382-2914
DAM1673



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.

09442-2746 FIN 326 (The Ant)

 
 
09h 44m 12.13s -27° 46' 10.4" P.A. 346.00 sep 0.1 mag 5.30,6.18 Sp F7V dist. 104.06 pc (339.44 l.y.)
 
 
Coord 2000 09442-2746 Discov num FIN 326 Comp Coord arcsec 2000 09 44 12.13 -27 46 10.4
Date first 1952 Date last 2021 Obs 56
Pa first 251 Pa last 345.7 P.A. Now (θ) 312.3°
Sep first 0.1 Sep last 0.062 Sep. Now (ρ) 0.064"
Mag pri 5.30 Mag sec 6.18 delta mag (ΔM) 0.88 Spectral class F7V (yellow-white)
Pri motion ra -047 Sec motion ra
Pri motion dec +035 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name The Ant Constellation Antlia SAO 177908 HIP 47758
Tycho2 6610-02315-1 Gaia DR2 5657043095060156416 HD 84367 HR 3871
GC 13425 GL Gl 366.1A CD CD-27 6881 CP CP-27 3851
Bayer Theta Antliae Bayer name The Ant FK5 366 Distance 104.06
Distance ly 339.44 Bayer greek θ Ant
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.39y± 0.08 Periastron (T)2020.92y± 0.08 Semi-major axis (a)0.1075a± 0.0012
Eccentricity (e)0.506± 0.015 Inclination (i)126.8°± 0.9 Longitude of periastron (ω)138.2°± 2.6
Node (Ω)175°± 1.8 Notesn ReferenceTok2020e
Equinox Last observation Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 156.7 0.089
2001 133.5 0.056
2002 63.8 0.035
2003 1.3 0.055
2004 329.6 0.064
2005 301.3 0.065
2006 274.6 0.069
2007 252.8 0.079
2008 236.6 0.092
2009 224.6 0.106
2010 215.4 0.119
2011 207.9 0.130
2012 201.5 0.139
2013 195.7 0.144
2014 190.2 0.146
2015 184.6 0.143
2016 178.6 0.135
2017 171.5 0.121
2018 161.9 0.099
2019 145.2 0.069
2020 99.1 0.038
2021 18.7 0.047
2022 341.0 0.062
2023 312.3 0.064
2024 284.6 0.066
2025 260.6 0.074
2026 242.3 0.087
2027 228.9 0.101
2028 218.8 0.114
2029 210.7 0.126
2030 203.9 0.136


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


 
  


wds09442-2746e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09442-2746 FIN 326 (The Ant) : NOTES
 
 
discov_num notes refcode
FIN 326 the Ant. Spectrum composite; A8V+F7II-III.
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 6.27 +/- 1.23, 5.74, and 1.13 Msun, respectively. Mlk2012
Docobo & Andrade (2013) derive a dynamical parallax of 10.08 +/- 0.47
mas and component masses 2.1 +/- 0.5 and 1.8 +/- 0.1 Msun. See paper
for extensive notes on this system. Doc2013d
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Doc2013d orb - Docobo, J.A. & Andrade, M. 2013MNRAS.428..321D
Doc2013d MNRAS 428, 321, 2013
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2020e St j Tokovinin, A., Mason, B.D., Mendez, R.A., Costa, E. & Horch, E.P. 2020AJ....160....7T
Tok2020e +orb AJ 160, 7, 2020
 
 
DISCOVERER
 
 
idgroup discov author
1 FIN Finsen, W.S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09442-2746 FIN 326 2006 41 90 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2009 44 42 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2011 44 28 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2012 45 22 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2013 46 14 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2014 47 10 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2015 48 0 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2016 49 172 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2018 50 161 0.1 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2019 52 103 0.0 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2020 54 20 0.0 5.30 6.18 F7V NO 094412.13-274610.4
09442-2746 FIN 326 2021 56 346 0.1 5.30 6.18 F7V NO 094412.13-274610.4

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

 
 
WDS 09442-2746 FIN 326 (The Ant) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09442-2746 FIN 326 (The Ant) : MEASURES
 
 
No records found.

 
 
WDS 09442-2746 (The Ant) : VIRTUAL EYEPIECE
 
 

09442-2746 FIN 326A mag 5.3 Sp F7V 09442-2746 FIN 326B sep 0.1 P.A. 347.30 mag 6.18 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 09442-2746 (The Ant) : ALADIN DSS IMAGE @ 09h 44m 12.13s -27° 46' 10.4"
 
 
 
 
WDS 09442-2746 FIN 326 (The Ant) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09442-2746 FIN 326 distance=0' 09448-2738 B 2696 distance=12' 09449-2723 LDS 280 distance=26' 09423-2720 TDS6755 distance=38' 09455-2824 B 188 distance=42' 09478-2736 HLD 99 distance=50' 09465-2705 B 189 distance=51' 09419-2829 TDS6754 distance=54' 09477-2823 UC 1830 distance=59' 09481-2816 SEE 116 distance=60' 09442-2640 B 2695 distance=67' 09429-2633 RST2649 distance=76' 09397-2835 HTS 26AB distance=78' 09397-2835 HTS 26AC distance=78' 09467-2857 BRT2971 distance=78' 09387-2704 RST1442 distance=86' 09507-2807 DAM1791 distance=90' 09508-2807 OL 41 distance=91' 09387-2644 HJ 2501CD distance=97' 09387-2644 RST1441Aa,Ab distance=97' 09387-2644 B 187AB distance=97' 09387-2644 HJ 2501AC distance=97' 09510-2706 RST 438 distance=100' 09487-2625 I 205AB distance=102' 09487-2625 TOK 532AC distance=102' 09416-2922 B 2692 distance=103' 09509-2839 BRT2973 distance=103' 09398-2918 UC 1818 distance=109' 09360-2731 B 185 distance=110' 09446-2937 RST 427 distance=112' 09503-2622 DAM1788 distance=117' 09382-2914 DAM1673 distance=118' 09435-2945 KPP2353 distance=120' 09523-2840 HWE 24 distance=120' 09438-2945 TDS6771 distance=120' 09530-2720 RST5341 distance=120' 09380-2915 HJ 4227 distance=121' 09513-2904 DAM1801 distance=122' 09505-2617 B 190AB distance=123' 09505-2617 B 190AB,C distance=123' 09439-2948 DAM1714 distance=123' 09374-2859 J 1548 distance=123' 09522-2644 SKF1888 distance=124' 09515-2909 RST1454 distance=127' 09363-2903 B 186 distance=129' 09541-2800 BU 215 distance=132' 09543-2734 RST1460 distance=136' 09517-2919 TDS6861 distance=136' 09370-2610 WSI 127AB distance=137' 09370-2610 WJG 5AB,C distance=137' 09336-2753 DEA 21 distance=141' 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 09442-2746 FIN 326 346 0.1
Show 09448-2738 B 2696 274 17.2 12
Show 09449-2723 LDS 280 235 10.8 26
Show 09423-2720 TDS6755 72 0.6 38
Show 09455-2824 B 188 174 0.3 42
Show 09478-2736 HLD 99 218 2.0 50
Show 09465-2705 B 189 5 1.3 51
Show 09419-2829 TDS6754 273 0.4 54
Show 09477-2823 UC 1830 288 40.2 59
Show 09481-2816 SEE 116 202 2.5 60
Show 09442-2640 B 2695 250 14.4 67
Show 09429-2633 RST2649 235 0.5 76
Show 09397-2835 HTS 26 AB 287 5.0 78
Show 09397-2835 HTS 26 AC 197 16.2 78
Show 09467-2857 BRT2971 57 3.7 78
Show 09387-2704 RST1442 227 0.2 86
Show 09507-2807 DAM1791 243 6.0 90
Show 09508-2807 OL 41 350 1.4 91
Show 09387-2644 HJ 2501 CD 136 25.8 97
Show 09387-2644 RST1441 Aa,Ab 148 0.3 97
Show 09387-2644 B 187 AB 130 10.5 97
Show 09387-2644 HJ 2501 AC 94 10.8 97
Show 09510-2706 RST 438 195 1.6 100
Show 09487-2625 I 205 AB 281 1.8 102
Show 09487-2625 TOK 532 AC 181 999.9 102
Show 09416-2922 B 2692 328 8.5 103
Show 09509-2839 BRT2973 331 2.9 103
Show 09398-2918 UC 1818 275 11.5 109
Show 09360-2731 B 185 203 3.6 110
Show 09446-2937 RST 427 134 1.3 112
Show 09503-2622 DAM1788 216 1.4 117
Show 09382-2914 DAM1673 78 1.0 118
Show 09435-2945 KPP2353 297 20.1 120
Show 09523-2840 HWE 24 196 8.9 120
Show 09438-2945 TDS6771 336 0.5 120
Show 09530-2720 RST5341 25 1.5 120
Show 09380-2915 HJ 4227 316 6.6 121
Show 09513-2904 DAM1801 242 1.9 122
Show 09505-2617 B 190 AB 99 0.5 123
Show 09505-2617 B 190 AB,C 194 6.3 123
Show 09439-2948 DAM1714 4 12.3 123
Show 09374-2859 J 1548 124 14.2 123
Show 09522-2644 SKF1888 37 28.7 124
Show 09515-2909 RST1454 255 0.4 127
Show 09363-2903 B 186 79 3.0 129
Show 09541-2800 BU 215 347 1.8 132
Show 09543-2734 RST1460 27 0.5 136
Show 09517-2919 TDS6861 148 0.5 136
Show 09370-2610 WSI 127 AB 54 0.4 137
Show 09370-2610 WJG 5 AB,C 315 41.8 137
Show 09336-2753 DEA 21 140 29.3 141

 
 
WDS 09442-2746 : COMPONENTS
 
 
  A
B pa=347.3°
sep=0.06"
 
 
09442-2746 A
 
 
Componente originario normalizzato AB Name The Ant Coord arcsec 2000 094412.13-274610.4 Mag 5.3
Spectral class F7V (yellow-white) PmRA -47.00 PmDE 35.0 SAO 177908
HIP 47758 Tycho2 6610-02315-1 HD 84367 HR 3871
GC 13425 CD CD-27 6881 CP CP-27 3851 Bayer Theta Antliae
Bayer name The Ant FK5 366
Tycho2
Tycho2 6610-02315-1 Pflag RAmdeg 146.05040191 DEmdeg -27.76947025
PmRA -51.6 PmDE 36.4 E RAmdeg 3 E DEmdeg 3
E pmRA 0.6 E pmDE 0.6 EpRAm 1991.33 EpDEm 1991.58
Num 24 Q RAmdeg 1.7 Q DEmdeg 1.3 Q pmRA 1.7
Q pmDE 1.5 BTmag 5.401 E BTmag 0.014 VTmag 4.848
E VTmag 0.009 Prox 999 TYC T HIP 47758
CCDM AS RAdeg 146.05053556 DEdeg -27.76955139 EpRA 1990 1.78
EpDE 1990 1.97 E RAdeg 3.2 E DEdeg 3.4 Posflg P
Corr -0.1
SAO
SAO 177908 DelFlag RA1950 PmRA1950 -0.0037
DE1950 PmDE1950 0.03 Vmag 5 SpType F5p
Double code Source 74 CatNum 366 DM CD-27 6881
DMcomp BDsup HD 84367 M HD 0
GC 13425 RA1950rad 2.53932658 DE1950rad -0.48066039 PmRA2000 -0.0035
PmDE2000 0.034
Hipparcos
Catalog H HIP 47758 Proxy H RAhms 09 44 12.13
DEdms -27 46 10.4 Vmag 4.78 VarFlag R Vmag G
RAdeg 146.051 DEdeg -27.7696 AstroRef * Plx 8.49
CCDM 09442-2746 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AS
Theta 211 Rho 0.127 HD 84367 BD
CD CD-27 6881 CP CP-27 3851 Dm number -27 6881 VIred 0.61
SpType A7V+... R SpType Coord arcsec 2000 094412.13-274610.4
Hipparcos 2
HIP 47758 Sn 55 So 3 Nc 2
RArad 2.5490628416 DErad -0.4846703067 Plx 9.61 PmRA -53.23
PmDE 37.24 E RArad 0.32 E DErad 0.33 E Plx 0.46
E pmRA 0.36 E pmDE 0.38 Hpmag 4.8997 E Hpmag 0.0005
SHp 0.005 VA 0 BV 0.516 E BV 0.016
VI 0.61
CCDM
Ccdm 09442-2746 RComp Comp A Note1
Note2 Discov num DRAs 0.11 DDEs -10.4
R dRAs 10 Year Theta Rho
Obs 2 Vmag 5.7 Sp F7 PmNote *
PmRA -50 PmDE 30 Dm number -27 6881 Cat1 CD
Name2 177908 Cat2 SAO HD 84367 M HD
ADS BDS M ADS BDS N IDS IDS 09397S2719A
HIC 47758
 
 
09442-2746 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 094412.13-274610.3 Mag 6.18 Calc delta mag 0.88
Calc coord yes
CCDM
Ccdm 09442-2746 RComp Comp B Note1 *
Note2 Discov num FIN 326 DRAs DDEs
R dRAs Year 1959 Theta 005 Rho 0.1
Obs 8 Vmag 5.7 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 09397S2719B
HIC 47758