16170-5342 I   987

 
 
16H 16M 58.92S -53 41' 46.3" P.A. 282.8 SEP 0.45 MAG 6.63,8.77 SP G6IV+G2V DIST. 70.92 PC (231.34 L.Y.)
 
 
Coord 2000
16170-5342
Discov num
I   987
Comp
Coord arcsec 2000
16 16 58.92 -53 41 46.3
Date first
1910
Date last
2014
Obs
32
Pa first
270
Pa last
275
P.A. Now (θ)
282.8°
Sep first
0.5
Sep last
0.5
Sep. Now (ρ)
0.45"
Mag pri
6.63
Mag sec
8.77
delta mag (ΔM)
2.14
Spectral class
G6IV+G2V (yellow/yellow)
Pri motion ra
-067
Sec motion ra
-067
Pri motion dec
-093
Sec motion dec
-093
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Norma
SAO
243533
HIP
79787
Tycho2
8711-02684-1
HD
146059
CD
CD-53 6537
CP
CP-53 7607
Distance
70.92
Distance ly
231.34
last precise pa
275
last precise sep
0.472
 
 
ORBITAL ELEMENTS
 
 
Period (P)102.47y± 1.77 Periastron (T)1952.08y± 1.72 Semi-major axis (a)0.384a± 0.012
Eccentricity (e)0.262± 0.021 Inclination (i)15.9°± 10.8 Longitude of periastron (ω)12.2°± 43.4
Node (Ω)59.3°± 39.9 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.483 244.2
2001 0.484 246.3
2002 0.484 248.3
2003 0.484 250.4
2004 0.484 252.5
2005 0.483 254.5
2006 0.482 256.6
2007 0.481 258.7
2008 0.479 260.7
2009 0.478 262.8
2010 0.476 265.0
2011 0.473 267.1
2012 0.471 269.2
2013 0.468 271.4
2014 0.465 273.6
2015 0.462 275.9
2016 0.458 278.1
2017 0.455 280.4
2018 0.451 282.8
2019 0.446 285.2
2020 0.442 287.6
2021 0.437 290.1
2022 0.433 292.6
2023 0.428 295.2
2024 0.422 297.9
2025 0.417 300.6
2026 0.412 303.4
2027 0.406 306.3
2028 0.400 309.3
2029 0.394 312.3
2030 0.389 315.5

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic