14421+6116 STF 1878 (DL Dra)

 
 
14h 42m 03.25s +61° 15' 42.9" P.A. 314.00 sep 4.2 mag 6.33,9.16 Sp F4V dist. 40.67 pc (132.67 l.y.)
 
 
Coord 2000 14421+6116 Discov num STF1878 Comp Coord arcsec 2000 14 42 03.25 +61 15 42.9
Date first 1832 Date last 2019 Obs 56
Pa first 336 Pa last 313.9 P.A. Now (θ) 313.9°
Sep first 3.1 Sep last 4.222 Sep. Now (ρ) 4.222"
Mag pri 6.33 Mag sec 9.16 delta mag (ΔM) 2.83 Spectral class F4V (yellow-white)
Pri motion ra +076 Sec motion ra +076
Pri motion dec -033 Sec motion dec -030
Notes N O (See Notes, Orbital solution)
rPM=0.036 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DL Dra Constellation Draco SAO 16466 HIP 71876
Tycho2 4173-01661-1 Gaia DR2 1618540425290743936 HD 129798 HR 5492
GC 19825 ADS 9357 BD BD+61 1451 Distance 40.67
Distance ly 132.67
 
 
ORBITAL ELEMENTS
 
 
Period (P)1555.0249y± 597.8532 Periastron (T)2134.4767y± 57.5852 Semi-major axis (a)7.5181a± 3.71934
Eccentricity (e)0.66919± 0.28095 Inclination (i)99.47°± 6.473 Longitude of periastron (ω)250.047°± 20.946
Node (Ω)127.92°± 6.057 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 316.1 4.166
2001 316.1 4.166
2002 316.0 4.166
2003 315.9 4.166
2004 315.8 4.166
2005 315.7 4.165
2006 315.6 4.165
2007 315.5 4.164
2008 315.4 4.163
2009 315.3 4.162
2010 315.2 4.161
2011 315.1 4.159
2012 315.0 4.157
2013 314.9 4.155
2014 314.9 4.153
2015 314.8 4.151
2016 314.7 4.148
2017 314.6 4.146
2018 314.5 4.143
2019 314.4 4.139
2020 314.3 4.136
2021 314.2 4.132
2022 314.1 4.129
2023 314.0 4.124
2024 313.9 4.120
2025 313.8 4.116
2026 313.7 4.111
2027 313.6 4.106
2028 313.5 4.100
2029 313.4 4.095
2030 313.4 4.089


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


 
  


wds14421%2B6116a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic