20020+2456 STT 395 (16 Vul)

 
 
20h 02m 01.45s +24° 56' 16.8" P.A. 129.00 sep 0.7 mag 5.83,6.19 Sp F2III dist. 67.98 pc (221.75 l.y.)
 
 
Coord 2000 20020+2456 Discov num STT 395 Comp Coord arcsec 2000 20 02 01.45 +24 56 16.8
Date first 1843 Date last 2020 Obs 333
Pa first 89 Pa last 128.8 P.A. Now (θ) 128.8°
Sep first 0.5 Sep last 0.73 Sep. Now (ρ) 0.73"
Mag pri 5.83 Mag sec 6.19 delta mag (ΔM) 0.36 Spectral class F2III (yellow-white)
Pri motion ra +090 Sec motion ra +090
Pri motion dec +067 Sec motion dec +067
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 16 Vul Constellation Vulpecula SAO 88098 HIP 98636
Tycho2 2145-01661-1 HD 190004 HR 7657 GC 27768
ADS 13277 BD BD+24 3977 Flamsteed 16 Vulpeculae Flamsteed name 16 Vul
Distance 67.98 Distance ly 221.75
 
 
ORBITAL ELEMENTS
 
 
Period (P)1201y Periastron (T)1863.7y Semi-major axis (a)2.687a
Eccentricity (e)0.932 Inclination (i)79° Longitude of periastron (ω)276.5°
Node (Ω)84.5° Notesn ReferenceZir2013a
Equinox2000 Last observation2009 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 123.4 0.848
2001 123.6 0.848
2002 123.8 0.848
2003 124.0 0.848
2004 124.2 0.848
2005 124.4 0.848
2006 124.6 0.848
2007 124.9 0.849
2008 125.1 0.849
2009 125.3 0.849
2010 125.5 0.849
2011 125.7 0.849
2012 125.9 0.849
2013 126.1 0.849
2014 126.3 0.849
2015 126.5 0.849
2016 126.7 0.849
2017 126.9 0.849
2018 127.1 0.849
2019 127.3 0.849
2020 127.6 0.849
2021 127.8 0.849
2022 128.0 0.849
2023 128.2 0.849
2024 128.4 0.849
2025 128.6 0.849
2026 128.8 0.849
2027 129.0 0.849
2028 129.2 0.849
2029 129.4 0.849
2030 129.6 0.849


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



 
 


wds20020%2B2456a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic