16088+4456 NOI 2 (Phi Her)

 
 
16h 08m 46.20s +44° 56' 05.3" P.A. 59.00 sep 0.0 mag 4.23, Sp B9 dist. 62.54 pc (204.01 l.y.)
 
 
Coord 2000 16088+4456 Discov num NOI   2 Comp Coord arcsec 2000 16 08 46.20 +44 56 05.3
Date first 1997 Date last 2005 Obs 34
Pa first 224 Pa last 59.3 P.A. Now (θ) 59.3°
Sep first 0.0 Sep last 0.018 Sep. Now (ρ) 0.018"
Mag pri 4.23 Mag sec delta mag (ΔM) Spectral class B9 (blue-white)
Pri motion ra -026 Sec motion ra
Pri motion dec +036 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Phi Her Var name NSV7490 Her Constellation Hercules SAO 45911
HIP 79101 Tycho2 3067-01842-1 Gaia DR2 1386158505321789696 HD 145389
HR 6023 GC 21736 BD BD+45 2376 Bayer Phi Herculis
Bayer name Phi Her Flamsteed 11 Herculis Flamsteed name 11 Her FK5 601
Distance 62.54 Distance ly 204.01 Bayer greek φ Her
 
 
ORBITAL ELEMENTS
 
 
Period (P)564.69d± 0.13 Periastron (T)50121.8d (1996.105y)± 1 Semi-major axis (a)32.1m± 0.2
Eccentricity (e)0.522± 0.004 Inclination (i)12.1°± 2.9 Longitude of periastron (ω)351.9°± 2.7
Node (Ω)9.1°± 2.5 Notesn ReferenceZav2007
Equinox2000 Last observation2005 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 183.7 0.049
2001-01-01 122.7 0.031
2002-01-01 233.1 0.034
2003-01-01 175.9 0.049
2004-01-01 98.9 0.025
2005-01-01 219.2 0.039
2006-01-01 167.9 0.047
2007-01-01 56.5 0.018
2008-01-01 208.4 0.043
2009-01-01 159.3 0.045
2010-01-01 344.6 0.016
2011-01-01 199.2 0.046
2012-01-01 149.4 0.041
2013-01-01 283.7 0.021
2014-01-01 190.9 0.048
2015-01-01 137.4 0.037
2016-01-01 251.2 0.028
2017-01-01 183.1 0.049
2018-01-01 121.3 0.031
2019-01-01 231.9 0.034
2020-01-01 175.4 0.049
2021-01-01 96.7 0.024
2022-01-01 218.3 0.039
2023-01-01 167.3 0.047
2024-01-01 52.2 0.017
2025-01-01 207.7 0.044
2026-01-01 158.6 0.045
2027-01-01 339.0 0.016
2028-01-01 198.6 0.046
2029-01-01 148.6 0.041
2030-01-01 280.5 0.021


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



 
 


wds16088%2B4456a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic