16294-2626 GNT 1 (Antares)

 
 
16h 29m 24.47s -26 25' 55.0" P.A. 277.00 sep 2.7 mag 0.96,5.40 Sp M1 dist. 169.78 pc (553.82 l.y.)
 
 
Coord 2000 16294-2626 Discov num GNT   1 Comp Coord arcsec 2000 16 29 24.47 -26 25 55.0
Date first 1847 Date last 2019 Obs 149
Pa first 273 Pa last 276.9 P.A. Now (θ) 276.9°
Sep first 2.6 Sep last 2.743 Sep. Now (ρ) 2.743"
Mag pri 0.96 Mag sec 5.40 delta mag (ΔM) 4.44 Spectral class M1 (red)
Pri motion ra -010 Sec motion ra
Pri motion dec -020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Antares Constellation Scorpius SAO 184415 HIP 80763
Tycho2 6803-02158-1 HD 148478 HR 6134 GC 22157
ADS 10074 CD CD-2611359 CP CP-26 5648 Bayer Alpha Scorpii
Bayer name Alp Sco Flamsteed 21 Scorpii Flamsteed name 21 Sco FK5 616
Distance 169.78 Distance ly 553.82 Bayer greek α Sco
Other names COR SCORPII, KALB AL AKRAB, VESPERTILIO
Meaning rival of Mars
 
 
ORBITAL ELEMENTS
 
 
Period (P)2666.4855y± 1340.2811 Periastron (T)2194.6737y± 392.0113 Semi-major axis (a)4.38451a± 2.95015
Eccentricity (e)0.82117± 0.14143 Inclination (i)81.567°± 5.868 Longitude of periastron (ω)280.946°± 15.485
Node (Ω)101.141°± 10.661 Notesn ReferenceIzm2019
Equinox Last observation2014 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 276.0 2.738
2001 276.1 2.732
2002 276.1 2.727
2003 276.1 2.721
2004 276.1 2.716
2005 276.2 2.710
2006 276.2 2.705
2007 276.2 2.699
2008 276.3 2.694
2009 276.3 2.688
2010 276.3 2.682
2011 276.4 2.677
2012 276.4 2.671
2013 276.4 2.665
2014 276.4 2.659
2015 276.5 2.653
2016 276.5 2.647
2017 276.5 2.641
2018 276.6 2.635
2019 276.6 2.629
2020 276.6 2.623
2021 276.7 2.617
2022 276.7 2.611
2023 276.7 2.604
2024 276.8 2.598
2025 276.8 2.592
2026 276.8 2.585
2027 276.9 2.579
2028 276.9 2.572
2029 276.9 2.566
2030 277.0 2.559


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



 
 


wds16294-2626c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic