02592+2120 STF 333AB (Eps Ari)

 
 
02H 59M 12.73S +21 20' 25.6" P.A. 209.9 SEP 1.33 MAG 5.17,5.57 SP A2VS+A2VS DIST. 101.94 PC (332.53 L.Y.)
 
 
Coord 2000
02592+2120
Discov num
STF 333
Comp
AB
Coord arcsec 2000
02 59 12.73 +21 20 25.6
Date first
1827
Date last
2016
Obs
453
Pa first
186
Pa last
211
P.A. Now (θ)
209.9°
Sep first
0.5
Sep last
1.4
Sep. Now (ρ)
1.33"
Mag pri
5.17
Mag sec
5.57
delta mag (ΔM)
0.4
Spectral class
A2Vs+A2Vs (white/white)
Pri motion ra
-009
Sec motion ra
-009
Pri motion dec
-005
Sec motion dec
-005
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
02592+2120 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Eps Ari 75673 02592+2120 STF 333 AB 1827 2016 453 210 1.3 5.17 5.57 0.40 Y <===
Show 75673 02592+2120 STF 333 AC 1896 2000 5 192 145.6 5.17 12.70 7.53
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Eps Ari
Constellation
Aries
SAO
75673
HIP
13914
Tycho2
1230-01424-1
HD
18519
HR
887
GC
3582
ADS
2257
BD
BD+20 484
Bayer
Epsilon Arietis
Bayer name
Eps Ari
Flamsteed
48 Arietis
Flamsteed name
48 Ari
Distance
101.94
Distance ly
332.53
last precise pa
210.6
last precise sep
1.371
 
 
ORBITAL ELEMENTS
 
 
Period (P)1215.913y± 1.54 Periastron (T)704.111y± 1.778 Semi-major axis (a)2.174a± 0.035
Eccentricity (e)0.317± 0.006 Inclination (i)84.2°± 0.8 Longitude of periastron (ω)162.1°± 1
Node (Ω)25.6°± 0.7 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 1.418 208.7
2001 1.414 208.7
2002 1.409 208.8
2003 1.405 208.9
2004 1.400 208.9
2005 1.396 209.0
2006 1.391 209.1
2007 1.386 209.1
2008 1.381 209.2
2009 1.376 209.3
2010 1.371 209.3
2011 1.365 209.4
2012 1.360 209.5
2013 1.355 209.6
2014 1.349 209.6
2015 1.344 209.7
2016 1.338 209.8
2017 1.332 209.9
2018 1.327 209.9
2019 1.321 210.0
2020 1.315 210.1
2021 1.309 210.2
2022 1.303 210.2
2023 1.296 210.3
2024 1.290 210.4
2025 1.284 210.5
2026 1.278 210.6
2027 1.271 210.6
2028 1.265 210.7
2029 1.258 210.8
2030 1.251 210.9

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic