15002+2129 HU 907

15h 00m 10.00s +21° 28' 48.8" P.A. 284.00 sep 0.2 mag 10.19,10.20 Sp G0 dist. 158.73 pc (517.78 l.y.)

Coord 2000 15002+2129 Discov num HU  907 Comp Coord arcsec 2000 15 00 10.00 +21 28 48.8
Date first 1904 Date last 2014 Obs 22
Pa first 155 Pa last 284.3 P.A. Now (θ) 284.3°
Sep first 0.3 Sep last 0.19 Sep. Now (ρ) 0.19"
Mag pri 10.19 Mag sec 10.20 delta mag (ΔM) 0.01 Spectral class G0 (yellow)
Pri motion ra -025 Sec motion ra
Pri motion dec -037 Sec motion dec
Notes O (Orbital solution)




This double is physical.



OTHER CATALOGS AND DESIGNATIONS

Constellation Bootes HIP 73411 Tycho2 1491-01319-1 Gaia DR2 1261536627612991360
ADS 9473 BD BD+22 2769 Distance 158.73 Distance ly 517.78




ORBITAL ELEMENTS

Period (P)173.2y Periastron (T)2038.66y Semi-major axis (a)0.259a
Eccentricity (e)0.474 Inclination (i)47.1° Longitude of periastron (ω)238.8°
Node (Ω)146.5° Notes ReferenceLin2019d
Equinox2000 Last observation2019 Grade5(1=Definitive, 9=Indet.)

label theta rho
2000 260.6 0.210
2001 262.5 0.208
2002 264.5 0.207
2003 266.4 0.206
2004 268.4 0.205
2005 270.4 0.204
2006 272.4 0.203
2007 274.4 0.202
2008 276.5 0.201
2009 278.6 0.200
2010 280.7 0.199
2011 282.8 0.198
2012 284.9 0.197
2013 287.1 0.196
2014 289.2 0.195
2015 291.4 0.194
2016 293.7 0.193
2017 295.9 0.192
2018 298.2 0.190
2019 300.6 0.188
2020 302.9 0.187
2021 305.4 0.185
2022 307.8 0.183
2023 310.4 0.180
2024 313.0 0.178
2025 315.7 0.175
2026 318.5 0.171
2027 321.4 0.168
2028 324.4 0.164
2029 327.6 0.160
2030 331.0 0.155


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



 
 


wds15002%2B2129b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic