10163+1744 STT 215 (HD 88987)

 
 
10h 16m 16.05s +17° 44' 24.6" P.A. 176.00 sep 1.5 mag 7.25,7.46 Sp A9IV dist. 114.55 pc (373.66 l.y.)
 
 
Coord 2000 10163+1744 Discov num STT 215 Comp Coord arcsec 2000 10 16 16.05 +17 44 24.6
Date first 1843 Date last 2023 Obs 462
Pa first 256 Pa last 176.3 P.A. Now (θ) 176.3°
Sep first 0.3 Sep last 1.54 Sep. Now (ρ) 1.54"
Mag pri 7.25 Mag sec 7.46 delta mag (ΔM) 0.21 Spectral class A9IV (white)
Pri motion ra -007 Sec motion ra -007
Pri motion dec +001 Sec motion dec +001
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 88987 Constellation Leo SAO 99032 HIP 50305
Tycho2 1422-00314-1 Gaia DR2 624033497996238208 HD 88987 HR 4028
GC 14090 ADS 7704 BD BD+18 2338 CD CD-28 8041
CP CP-28 4058 Distance 114.55 Distance ly 373.66
 
 
ORBITAL ELEMENTS
 
 
Period (P)702.4y Periastron (T)1826.63y Semi-major axis (a)1.035a
Eccentricity (e)0.707 Inclination (i)180° Longitude of periastron (ω)116.5°
Node (Ω)90.6° Notes ReferenceLin2022b
Equinox Last observation2022 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 179.5 1.432
2001 179.3 1.436
2002 179.1 1.440
2003 179.0 1.444
2004 178.8 1.448
2005 178.6 1.452
2006 178.4 1.456
2007 178.2 1.459
2008 178.0 1.463
2009 177.9 1.467
2010 177.7 1.471
2011 177.5 1.474
2012 177.3 1.478
2013 177.1 1.482
2014 177.0 1.485
2015 176.8 1.489
2016 176.6 1.492
2017 176.4 1.496
2018 176.3 1.499
2019 176.1 1.503
2020 175.9 1.506
2021 175.8 1.510
2022 175.6 1.513
2023 175.4 1.516
2024 175.2 1.520
2025 175.1 1.523
2026 174.9 1.526
2027 174.7 1.530
2028 174.6 1.533
2029 174.4 1.536
2030 174.2 1.539
2031 174.1 1.543
2032 173.9 1.546
2033 173.8 1.549
2034 173.6 1.552
2035 173.4 1.555
2036 173.3 1.558
2037 173.1 1.561
2038 173.0 1.564
2039 172.8 1.567
2040 172.6 1.570
2041 172.5 1.573
2042 172.3 1.576
2043 172.2 1.579
2044 172.0 1.582
2045 171.9 1.584
2046 171.7 1.587
2047 171.6 1.590
2048 171.4 1.593
2049 171.2 1.596
2050 171.1 1.598


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10163%2B1744d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic