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Doubles in session


Current system
10426+0335
A 2768
34 Sex


Nearby doubles
19' : 10428+0317
KPP3824

24' : 10410+0336
J 1369

35' : 10404+0329
SLW 506

38' : 10435+0410
LDS2878

40' : 10446+0402
A 2770

43' : 10436+0415
OCC 262

47' : 10418+0419
SLE 587

63' : 10386+0354
LDS2874

66' : 10432+0440
A 2769

67' : 10403+0432
OCC9152

71' : 10459+0426
BAL2844

71' : 10433+0445
STF1466AB

75' : 10464+0424
SLE 592

85' : 10385+0235
GRV 819

86' : 10372+0305
LDS2873

87' : 10435+0210
OCC 412AB

94' : 10474+0236
HDS1542AB

99' : 10473+0445
SLE 593

100' : 10363+0405
CVR 570

102' : 10400+0202
SLW 504

105' : 10438+0152
SLW 514

107' : 10497+0343
BAL2845

107' : 10387+0207
CBL 315

108' : 10452+0515
SLW 521

111' : 10481+0448
CVR 578

112' : 10355+0406
BAL2842



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.

10426+0335 A  2768 (34 Hya)

 
 
10h 42m 37.53s +03° 34' 58.9" P.A. 237.20 sep 0.6 mag 6.92,8.45 Sp F7V dist. 71.38 pc (232.84 l.y.)
 
 
Coord 2000
10426+0335
 Discov num
A  2768
 Comp
Coord arcsec 2000
10 42 37.53 +03 34 58.9
Date first
1914
 Date last
2019
 Obs
128
Pa first
271
 Pa last
238
 P.A. Now (θ)
237.2°
Sep first
0.4
 Sep last
0.6
 Sep. Now (ρ)
0.62"
Mag pri
6.92
 Mag sec
8.45
 delta mag (ΔM)
1.53
 Spectral class
F7V (yellow-white)
Pri motion ra
-091
 Sec motion ra
Pri motion dec
+027
 Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
238.2
 Precise sep
0.624
 Name
34 Hya
 Constellation
Sextans
HIP
52401
 Tycho2
0257-01133-1
 Gaia DR2
3857564704134642944
 HD
92749
GC
14723
 ADS
7896
 BD
BD+04 2375
 Flamsteed
34 Sextantis
Flamsteed name
34 Hya
 Distance
71.38
 Distance ly
232.84
 last precise pa
238.2
last precise sep
0.624
 
 
ORBITAL ELEMENTS
 
 
Period (P)81.66y± 2.05 Periastron (T)1976.39y± 0.21 Semi-major axis (a)0.401a± 0.002
Eccentricity (e)0.55± 0.005 Inclination (i)140.1°± 1.7 Longitude of periastron (ω)354.9°± 2.9
Node (Ω)57.8°± 1 Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.503 265.3
2001 0.516 263.5
2002 0.528 261.8
2003 0.539 260.2
2004 0.549 258.7
2005 0.559 257.2
2006 0.568 255.8
2007 0.577 254.4
2008 0.584 253.1
2009 0.591 251.8
2010 0.597 250.5
2011 0.603 249.2
2012 0.608 248.0
2013 0.612 246.8
2014 0.615 245.5
2015 0.617 244.3
2016 0.619 243.2
2017 0.620 242.0
2018 0.621 240.8
2019 0.620 239.6
2020 0.619 238.4
2021 0.618 237.2
2022 0.615 236.1
2023 0.612 234.8
2024 0.608 233.6
2025 0.603 232.4
2026 0.598 231.1
2027 0.591 229.8
2028 0.584 228.5
2029 0.577 227.2
2030 0.568 225.8


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


 
  


wds10426%2B0335b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
10426+0335 A 2768 2006 90 255 0.6 6.92 8.45 F7V NOD 104237.53+033458.9
10426+0335 A 2768 2009 93 251 0.6 6.92 8.45 F7V NOD 104237.53+033458.9
10426+0335 A 2768 2010 99 251 0.6 6.92 8.45 F7V NOD 104237.53+033458.9
10426+0335 A 2768 2011 100 249 0.6 6.92 8.45 F7V NOD 104237.53+033458.9
10426+0335 A 2768 2013 101 247 0.6 6.92 8.45 F7V NOD 104237.53+033458.9
10426+0335 A 2768 2015 103 245 0.6 6.92 8.45 F7V NO 104237.53+033458.9
10426+0335 A 2768 2017 115 242 0.6 6.92 8.45 F7V NO 104237.53+033458.9
10426+0335 A 2768 2018 121 240 0.6 6.92 8.45 F7V NO 104237.53+033458.9
10426+0335 A 2768 2019 128 238 0.6 6.92 8.45 F7V NO 104237.53+033458.9

If you need more information about this double, apply for a data request form to the WDS.