09276-3500 B 2215 (HD 81919)

 
 
09h 27m 38.42s -35 00' 26.5" P.A. 38.00 sep 0.0 mag 7.40,7.50 Sp A5III/IV dist. 128.21 pc (418.22 l.y.)
 
 
Coord 2000 09276-3500 Discov num B  2215 Comp Coord arcsec 2000 09 27 38.42 -35 00 26.5
Date first 1935 Date last 2012 Obs 6
Pa first 116 Pa last 37.8 P.A. Now (θ) 37.8°
Sep first 0.2 Sep last 0.034 Sep. Now (ρ) 0.034"
Mag pri 7.40 Mag sec 7.50 delta mag (ΔM) 0.1 Spectral class A5III/IV (white)
Pri motion ra -027 Sec motion ra
Pri motion dec -024 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 81919 Constellation Antlia SAO 200392 HIP 46396
Tycho2 7162-00264-1 Gaia DR2 5437474574366697088 HD 81919 HR 3756
GC 13055 CD CD-34 5895 CP CP-34 3539 Distance 128.21
Distance ly 418.22
 
 
ORBITAL ELEMENTS
 
 
Period (P)721.3315d± 12.3809 Periastron (T)48702.0859d (1992.218y)± 18.8102 Semi-major axis (a)8.04m± 1.25
Eccentricity (e)0.5707± 0.1291 Inclination (i)116.45°± 7.11 Longitude of periastron (ω)107.94°± 9.91
Node (Ω)123.65°± 6.43 Notesn ReferenceHIP1997d
Equinox Last observation1991 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 108.0 0.004
2001-01-01 189.1 0.006
2002-01-01 100.5 0.003
2003-01-01 186.1 0.006
2004-01-01 88.2 0.003
2005-01-01 183.3 0.006
2006-01-01 65.1 0.002
2007-01-01 180.7 0.006
2008-01-01 25.1 0.002
2009-01-01 178.1 0.007
2010-01-01 348.6 0.002
2011-01-01 175.7 0.007
2012-01-01 328.6 0.003
2013-01-01 173.4 0.007
2014-01-01 317.2 0.003
2015-01-01 171.1 0.007
2016-01-01 309.7 0.004
2017-01-01 169.0 0.007
2018-01-01 303.9 0.005
2019-01-01 167.0 0.007
2020-01-01 299.2 0.005
2021-01-01 165.0 0.007
2022-01-01 295.1 0.005
2023-01-01 163.1 0.008
2024-01-01 291.3 0.005
2025-01-01 161.3 0.008
2026-01-01 287.7 0.006
2027-01-01 159.5 0.008
2028-01-01 284.2 0.006
2029-01-01 157.8 0.008
2030-01-01 280.9 0.006


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



 
 


wds09276-3500r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic