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Doubles in session


Current system
00427-6537
I 440
HD 4125


Nearby doubles
13' : 00427-6524
UC 425

28' : 00384-6545
KPP2800

40' : 00469-6606
NSN 176

42' : 00494-6540
TDS1632

48' : 00485-6506
HJ 3400

56' : 00495-6500
RST 19

57' : 00389-6445
RST 13

59' : 00517-6520
HJ 3405

61' : 00520-6520
HJ 3406

63' : 00523-6523
DAW 183

75' : 00547-6528
HJ 3408

78' : 00547-6558
LDS9105

86' : 00448-6412
KPP2611

89' : 00396-6703
UC 416

91' : 00282-6555
R 3AB

93' : 00469-6408
UC 438

97' : 00383-6405
TDS1555

97' : 00575-6607
DAM 394

99' : 00584-6605
DON1058AB

100' : 00529-6654
RSS 46

104' : 00282-6447
HJ 3369AB

108' : 00312-6418
MLO 11AB

109' : 00579-6634
I 48

110' : 00314-6414
WIS 400

116' : 00250-6618
UC 362

119' : 00308-6711
UC 383



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.

00427-6537 I 440 (HD 4125)

 
 
00h 42m 41.37s -65° 36' 30.6" P.A. 263.00 sep 0.4 mag 7.27,8.75 Sp A6V dist. 177.3 pc (578.35 l.y.)
 
 
Coord 2000 00427-6537 Discov num I   440 Comp Coord arcsec 2000 00 42 41.37 -65 36 30.6
Date first 1907 Date last 2022 Obs 18
Pa first 220 Pa last 263.3 P.A. Now (θ) 269.4°
Sep first 0.4 Sep last 0.426 Sep. Now (ρ) 0.402"
Mag pri 7.27 Mag sec 8.75 delta mag (ΔM) 1.48 Spectral class A6V (white)
Pri motion ra +038 Sec motion ra +038
Pri motion dec -003 Sec motion dec -003
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 4125 Constellation Tucana SAO 248239 HIP 3351
Tycho2 8847-00332-1 HD 4125 GC 855 CP CP-66 50
Distance 177.3 Distance ly 578.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)196y Periastron (T)2142y Semi-major axis (a)0.274a
Eccentricity (e)0.65 Inclination (i)157° Longitude of periastron (ω)344°
Node (Ω)57° Notesn ReferenceHrt2010a
Equinox2000 Last observation2009 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 275.8 0.372
2001 275.1 0.375
2002 274.4 0.378
2003 273.7 0.382
2004 273.1 0.385
2005 272.4 0.388
2006 271.8 0.391
2007 271.2 0.394
2008 270.6 0.397
2009 269.9 0.399
2010 269.3 0.402
2011 268.8 0.405
2012 268.2 0.407
2013 267.6 0.410
2014 267.0 0.412
2015 266.5 0.414
2016 265.9 0.417
2017 265.3 0.419
2018 264.8 0.421
2019 264.3 0.423
2020 263.7 0.425
2021 263.2 0.427
2022 262.7 0.429
2023 262.1 0.430
2024 261.6 0.432
2025 261.1 0.433
2026 260.6 0.435
2027 260.1 0.436
2028 259.6 0.438
2029 259.1 0.439
2030 258.6 0.440
2031 258.1 0.441
2032 257.6 0.442
2033 257.1 0.443
2034 256.6 0.444
2035 256.1 0.445
2036 255.6 0.446
2037 255.1 0.447
2038 254.7 0.447
2039 254.2 0.448
2040 253.7 0.448
2041 253.2 0.449
2042 252.7 0.449
2043 252.3 0.449
2044 251.8 0.449
2045 251.3 0.450
2046 250.8 0.450
2047 250.4 0.450
2048 249.9 0.450
2049 249.4 0.449
2050 248.9 0.449


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds00427-6537a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic