09522+0807 A 2762 (HD 85474)

 
 
09h 52m 11.82s +08° 06' 45.2" P.A. 244.00 sep 0.4 mag 8.85,11.90 Sp G5 dist. 60.02 pc (195.79 l.y.)
 
 
Coord 2000 09522+0807 Discov num A  2762 Comp Coord arcsec 2000 09 52 11.82 +08 06 45.2
Date first 1914 Date last 2018 Obs 13
Pa first 293 Pa last 244 P.A. Now (θ) 244°
Sep first 1.6 Sep last 0.399 Sep. Now (ρ) 0.399"
Mag pri 8.85 Mag sec 11.90 delta mag (ΔM) 3.05 Spectral class G5 (yellow)
Pri motion ra -054 Sec motion ra
Pri motion dec -077 Sec motion dec
Notes C (Has orbit and linear solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 85474 Constellation Leo SAO 117957 HIP 48412
Tycho2 0828-01883-1 Gaia DR2 3877904359283357440 HD 85474 BD BD+08 2281
Distance 60.02 Distance ly 195.79
 
 
ORBITAL ELEMENTS
 
 
Period (P)640y Periastron (T)2092.6y Semi-major axis (a)1.603a
Eccentricity (e)0.6 Inclination (i)105.8° Longitude of periastron (ω)17.3°
Node (Ω)131.1° Notes ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 268.8 0.597
2001 267.8 0.585
2002 266.9 0.573
2003 265.9 0.561
2004 264.9 0.549
2005 263.8 0.537
2006 262.7 0.525
2007 261.6 0.513
2008 260.3 0.502
2009 259.0 0.490
2010 257.7 0.479
2011 256.3 0.468
2012 254.8 0.458
2013 253.3 0.447
2014 251.7 0.437
2015 250.0 0.427
2016 248.2 0.418
2017 246.4 0.409
2018 244.5 0.400
2019 242.5 0.391
2020 240.4 0.384
2021 238.2 0.376
2022 235.9 0.369
2023 233.6 0.363
2024 231.1 0.357
2025 228.6 0.351
2026 226.0 0.347
2027 223.4 0.343
2028 220.7 0.340
2029 217.9 0.337
2030 215.1 0.335


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


 
  


wds09522%2B0807a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic