16294-2626 GNT   1 (Antares)

 
 
16h 29m 24.47s -26 25' 55.0" P.A. 276.70 sep 2.6 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
146
Pa first
273
Pa last
275
P.A. Now (θ)
276.7°
Sep first
2.6
Sep last
2.8
Sep. Now (ρ)
2.62"
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
 
 
Precise pa
275.3
Precise sep
2.764
Common name
Antares
Meaning
rival of Mars
Other names
COR SCORPII, KALB AL AKRAB, VESPERTILIO
Constellation
Scorpius
SAO
184415
HIP
80763
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
Distance
169.78
Distance ly
553.82
last precise pa
275.3
last precise sep
2.764
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation2014
label rho theta
2000 2.738 276.0
2001 2.732 276.1
2002 2.727 276.1
2003 2.721 276.1
2004 2.716 276.1
2005 2.710 276.2
2006 2.705 276.2
2007 2.699 276.2
2008 2.694 276.3
2009 2.688 276.3
2010 2.682 276.3
2011 2.677 276.4
2012 2.671 276.4
2013 2.665 276.4
2014 2.659 276.4
2015 2.653 276.5
2016 2.647 276.5
2017 2.641 276.5
2018 2.635 276.6
2019 2.629 276.6
2020 2.623 276.6
2021 2.617 276.7
2022 2.611 276.7
2023 2.604 276.7
2024 2.598 276.8
2025 2.592 276.8
2026 2.585 276.8
2027 2.579 276.9
2028 2.572 276.9
2029 2.566 276.9
2030 2.559 277.0

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






wds16294-2626c.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
16294-2626 GNT 1 1997 140 274 2.5 0.96 5.40 M1 NOD 162924.47-262555.0
16294-2626 GNT 1 2014 142 277 2.6 0.96 5.40 M1 NOD 162924.47-262555.0
16294-2626 GNT 1 2016 145 276 3.2 0.96 5.40 M1 NO 162924.47-262555.0

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