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Doubles in session


Current system
18453-3529
B 943
HD 173147


Nearby doubles
11' : 18456-3539
KPP2513

14' : 18443-3533
BRT1785

16' : 18443-3539
B 942

18' : 18444-3542
KOH 107

20' : 18444-3513
TDT1024

24' : 18451-3552
JSP 943

33' : 18464-3559
BRT1787

37' : 18469-3600
B 946

41' : 18448-3449
BRT1786

42' : 18472-3603
TDT1054

57' : 18494-3502
B 2463AB

59' : 18409-3507
FAL 62

61' : 18498-3501
B 950

62' : 18493-3607
B 948

63' : 18474-3627
WFC 285

64' : 18409-3457
RSS 488

64' : 18505-3526
UC 3692

70' : 18468-3636
NHR 10AB

72' : 18474-3637
LDS 653

73' : 18417-3431
JSP 785

77' : 18450-3646
LDS 652

78' : 18516-3523
B 952

79' : 18510-3454
JSP 791

79' : 18448-3410
JSP 942

83' : 18386-3528
BRT1784

86' : 18384-3515
TDT 970



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18453-3529 B 943 (HD 173147)

 
 
18h 45m 19.01s -35° 29' 01.4" P.A. 268.00 sep 0.5 mag 9.20,10.31 Sp F5V dist. 147.71 pc (481.83 l.y.)
 
 
Coord 2000 18453-3529 Discov num B   943 Comp Coord arcsec 2000 18 45 19.01 -35 29 01.4
Date first 1927 Date last 2022 Obs 11
Pa first 102 Pa last 268.1 P.A. Now (θ) 268.1°
Sep first 0.2 Sep last 0.486 Sep. Now (ρ) 0.486"
Mag pri 9.20 Mag sec 10.31 delta mag (ΔM) 1.11 Spectral class F5V (yellow-white)
Pri motion ra +045 Sec motion ra
Pri motion dec -028 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 173147 Constellation Sagittarius SAO 210533 HIP 92018
Tycho2 7416-01422-1 Gaia DR2 6735137164037926912 HD 173147 CD CD-3512895
CP CP-35 8198 Distance 147.71 Distance ly 481.83
 
 
ORBITAL ELEMENTS
 
 
Period (P)237.1y Periastron (T)1942.8y Semi-major axis (a)0.376a
Eccentricity (e)0.389 Inclination (i)136.1° Longitude of periastron (ω)18.6°
Node (Ω)79.9° Notes ReferenceTok2022g
Equinox2000 Last observation2017 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 284.8 0.390
2001 283.9 0.395
2002 283.0 0.400
2003 282.1 0.405
2004 281.3 0.410
2005 280.4 0.414
2006 279.6 0.419
2007 278.8 0.423
2008 278.0 0.427
2009 277.2 0.431
2010 276.5 0.435
2011 275.7 0.439
2012 275.0 0.443
2013 274.3 0.447
2014 273.6 0.451
2015 272.9 0.454
2016 272.2 0.458
2017 271.5 0.461
2018 270.9 0.464
2019 270.2 0.467
2020 269.5 0.470
2021 268.9 0.473
2022 268.3 0.476
2023 267.7 0.479
2024 267.0 0.482
2025 266.4 0.484
2026 265.8 0.486
2027 265.2 0.489
2028 264.6 0.491
2029 264.0 0.493
2030 263.5 0.495
2031 262.9 0.497
2032 262.3 0.499
2033 261.7 0.501
2034 261.2 0.502
2035 260.6 0.504
2036 260.0 0.505
2037 259.5 0.506
2038 258.9 0.508
2039 258.4 0.509
2040 257.8 0.510
2041 257.3 0.511
2042 256.7 0.512
2043 256.2 0.512
2044 255.6 0.513
2045 255.1 0.513
2046 254.6 0.514
2047 254.0 0.514
2048 253.5 0.515
2049 253.0 0.515
2050 252.4 0.515


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds18453-3529a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic