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Doubles in session


Current system
20267-4334
I 1420
HD 194327


Nearby doubles
37' : 20289-4402
HJ 5201

38' : 20235-4319
TDT2231

46' : 20235-4404
WSP 110AB

47' : 20258-4420
BRT1108

59' : 20280-4237
RSS 36

70' : 20240-4231
DON 984

76' : 20239-4225
BU 763AB

76' : 20228-4437
TDT2223

97' : 20339-4431
I 127AB

102' : 20348-4244
AOT 80

103' : 20225-4203
HJ 5190AB

106' : 20251-4518
DON 985

110' : 20355-4241
AOT 82

110' : 20356-4243
AOT 83

111' : 20336-4457
KPP 626

112' : 20344-4221
DON 988AB

114' : 20351-4226
AOT 81

116' : 20345-4216
NSN 481

116' : 20199-4503
NSN 480

123' : 20322-4521
RST5470AB

127' : 20151-4332
KPP1654

132' : 20149-4403
SKF1164

132' : 20381-4251
UC 4240

133' : 20372-4445
TOK 369

134' : 20377-4236
UC 4238

135' : 20209-4533
SEE 415



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20267-4334 I 1420 (HD 194327)

 
 
20h 26m 44.38s -43° 33' 56.4" P.A. 4.00 sep 0.2 mag 9.38,9.61 Sp K0V dist. 45.54 pc (148.55 l.y.)
 
 
Coord 2000 20267-4334 Discov num I  1420 Comp Coord arcsec 2000 20 26 44.38 -43 33 56.4
Date first 1925 Date last 2022 Obs 26
Pa first 344 Pa last 4.3 P.A. Now (θ) 12.3°
Sep first 0.7 Sep last 0.247 Sep. Now (ρ) 0.193"
Mag pri 9.38 Mag sec 9.61 delta mag (ΔM) 0.23 Spectral class K0V (yellow-orange)
Pri motion ra +120 Sec motion ra
Pri motion dec -114 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194327 Constellation Sagittarius SAO 230207 HIP 100836
Tycho2 7961-01417-1 Gaia DR2 6679053545511522048 HD 194327 CD CD-4313984
CP CP-43 9228 Distance 45.54 Distance ly 148.55
 
 
ORBITAL ELEMENTS
 
 
Period (P)77.81y Periastron (T)1981.04y Semi-major axis (a)0.446a
Eccentricity (e)0.336 Inclination (i)79.3° Longitude of periastron (ω)61.6°
Node (Ω)159.3° Notes ReferenceDoc2019d
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 340.4 0.485
2001 341.1 0.492
2002 341.7 0.496
2003 342.4 0.498
2004 343.0 0.498
2005 343.7 0.496
2006 344.3 0.492
2007 345.0 0.487
2008 345.7 0.480
2009 346.4 0.471
2010 347.1 0.461
2011 347.9 0.450
2012 348.7 0.437
2013 349.6 0.423
2014 350.5 0.408
2015 351.5 0.392
2016 352.6 0.375
2017 353.8 0.357
2018 355.2 0.338
2019 356.7 0.319
2020 358.4 0.299
2021 0.3 0.278
2022 2.5 0.257
2023 5.2 0.236
2024 8.4 0.214
2025 12.3 0.193
2026 17.1 0.172
2027 23.2 0.153
2028 31.0 0.135
2029 41.0 0.120
2030 53.2 0.110
2031 67.4 0.104
2032 82.1 0.106
2033 95.7 0.113
2034 107.0 0.126
2035 116.1 0.142
2036 123.1 0.160
2037 128.7 0.180
2038 133.2 0.200
2039 136.9 0.220
2040 139.9 0.241
2041 142.5 0.260
2042 144.7 0.278
2043 146.6 0.296
2044 148.4 0.311
2045 150.0 0.325
2046 151.4 0.337
2047 152.8 0.346
2048 154.1 0.352
2049 155.4 0.355
2050 156.7 0.355


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds20267-4334b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic