16035-5747 SEE 258AB (Iot1 Nor)

 
 
16H 03M 32.22S -57 46' 29.5" P.A. 67.5 SEP 0.16 MAG 5.20,5.76 SP A7IV DIST. 39.39 PC (128.49 L.Y.)
 
 
Coord 2000
16035-5747
Discov num
SEE 258
Comp
AB
Coord arcsec 2000
16 03 32.22 -57 46 29.5
Date first
1897
Date last
2014
Obs
111
Pa first
266
Pa last
189
P.A. Now (θ)
67.5°
Sep first
0.8
Sep last
0.3
Sep. Now (ρ)
0.16"
Mag pri
5.20
Mag sec
5.76
delta mag (ΔM)
0.56
Spectral class
A7IV (white)
Pri motion ra
-157
Sec motion ra
-157
Pri motion dec
-095
Sec motion dec
-095
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
16035-5747 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show Iot1 Nor 243279 16035-5747 SEE 258 AB 1897 2014 111 68 0.2 5.20 5.76 0.56 Y <===
Show 243279 16035-5747 HJ 4825 AB,C 1835 2016 42 242 11.3 4.64 8.02 3.38
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
Iot1 Nor
Constellation
Norma
SAO
243279
HIP
78662
Tycho2
8718-02860-1
HD
143474
HR
5961
GC
21535
CP
CP-57 7500
Bayer
Iota 1 Normae
Bayer name
Iot1 Nor
Distance
39.39
Distance ly
128.49
last precise pa
189.1
last precise sep
0.279
 
 
ORBITAL ELEMENTS
 
 
Period (P)26.84y± 0.09 Periastron (T)1990.87y± 0.21 Semi-major axis (a)0.328a± 0.006
Eccentricity (e)0.515± 0.012 Inclination (i)168.7°± 9.9 Longitude of periastron (ω)320°± 44.1
Node (Ω)42°± 43.2 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.452 284.2
2001 0.468 278.5
2002 0.481 273.1
2003 0.489 267.9
2004 0.493 262.9
2005 0.493 257.9
2006 0.488 252.9
2007 0.480 247.7
2008 0.468 242.3
2009 0.451 236.6
2010 0.429 230.3
2011 0.403 223.3
2012 0.372 215.3
2013 0.335 205.5
2014 0.294 193.3
2015 0.248 176.6
2016 0.201 152.2
2017 0.166 115.1
2018 0.160 67.5
2019 0.187 26.0
2020 0.228 357.5
2021 0.272 338.0
2022 0.313 323.8
2023 0.350 312.8
2024 0.383 303.8
2025 0.412 296.1
2026 0.435 289.4
2027 0.455 283.2
2028 0.471 277.6
2029 0.482 272.3
2030 0.489 267.1

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