09442-2746 FIN 326 (The Ant)

 
 
09h 44m 12.13s -27 46' 10.4" P.A. 145.3 sep 0.07 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
2016
Obs
49
Pa first
251
Pa last
172
P.A. Now (θ)
145.3°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.07"
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
 
 
Precise pa
171.9
Precise sep
0.121
Name
The Ant
Cdsa2 id
FIN 326
Constellation
Antlia
SAO
177908
HIP
47758
Tycho2
6610-02315-1
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
Ra deg
9.736702777777777
De deg
-27.769555555555556
Distance
104.06
Distance ly
339.44
last precise pa
171.9
last precise sep
0.121
 
 
ORBITAL ELEMENTS
 
 
Period (P)18.266y± 0.185 Periastron (T)2020.143y± 0.2 Semi-major axis (a)0.11a± 0.002
Eccentricity (e)0.404± 0.005 Inclination (i)123.6°± 1 Longitude of periastron (ω)141.2°± 3
Node (Ω)183.5°± 1 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.057 136.8
2001 0.040 77.6
2002 0.059 23.0
2003 0.072 355.8
2004 0.071 332.9
2005 0.066 306.9
2006 0.067 278.9
2007 0.076 254.8
2008 0.091 237.2
2009 0.106 224.6
2010 0.120 215.2
2011 0.132 207.6
2012 0.139 201.0
2013 0.143 195.0
2014 0.141 189.0
2015 0.133 182.6
2016 0.118 175.0
2017 0.095 164.4
2018 0.066 145.3
2019 0.041 97.3
2020 0.053 33.4
2021 0.071 2.1
2022 0.072 339.1
2023 0.067 314.1
2024 0.066 286.2
2025 0.073 260.6
2026 0.086 241.3
2027 0.102 227.6
2028 0.117 217.5
2029 0.129 209.4
2030 0.138 202.7

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

grafico orbita





wds09442-2746b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
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

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