10087-2538 B 193

 
 
10h 08m 42.16s -25° 37' 57.4" P.A. 264.00 sep 0.4 mag 10.40,10.90
 
 
Coord 2000 10087-2538 Discov num B   193 Comp Coord arcsec 2000 10 08 42.16 -25 37 57.4
Date first 1926 Date last 2023 Obs 8
Pa first 76 Pa last 263.8 P.A. Now (θ) 265.8°
Sep first 0.3 Sep last 0.417 Sep. Now (ρ) 0.38"
Mag pri 10.40 Mag sec 10.90 delta mag (ΔM) 0.5 Spectral class
Pri motion ra -041 Sec motion ra
Pri motion dec +018 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hydra SAO 178460 Gaia DR2 5467240828027116288 ADS 7659
 
 
ORBITAL ELEMENTS
 
 
Period (P)450y Periastron (T)1952.52y Semi-major axis (a)0.542a
Eccentricity (e)0.5 Inclination (i)107.6° Longitude of periastron (ω)26.2°
Node (Ω)70.2° Notes ReferenceTok2023a
Equinox2000 Last observation2023 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 277.5 0.240
2001 276.5 0.248
2002 275.5 0.256
2003 274.6 0.265
2004 273.8 0.273
2005 273.0 0.281
2006 272.2 0.289
2007 271.5 0.297
2008 270.8 0.305
2009 270.2 0.313
2010 269.6 0.321
2011 269.0 0.329
2012 268.4 0.337
2013 267.9 0.345
2014 267.4 0.352
2015 266.9 0.360
2016 266.4 0.367
2017 266.0 0.375
2018 265.6 0.382
2019 265.1 0.390
2020 264.7 0.397
2021 264.4 0.404
2022 264.0 0.411
2023 263.6 0.418
2024 263.3 0.425
2025 262.9 0.432
2026 262.6 0.438
2027 262.3 0.445
2028 262.0 0.452
2029 261.7 0.458
2030 261.4 0.465
2031 261.1 0.471
2032 260.9 0.477
2033 260.6 0.483
2034 260.3 0.490
2035 260.1 0.496
2036 259.8 0.502
2037 259.6 0.507
2038 259.4 0.513
2039 259.1 0.519
2040 258.9 0.525
2041 258.7 0.530
2042 258.5 0.536
2043 258.2 0.541
2044 258.0 0.547
2045 257.8 0.552
2046 257.6 0.557
2047 257.4 0.562
2048 257.2 0.567
2049 257.1 0.572
2050 256.9 0.577


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds10087-2538a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic