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Doubles in session


Current system
04257-0214
BU 403
HD 28072


Nearby doubles
12' : 04251-0222
UC 1165

35' : 04268-0143
UC 1168

51' : 04259-0124
STF 547AB

53' : 04289-0236
BRT 366

62' : 04271-0311
RST4240

69' : 04231-0117
BU 402AB

73' : 04230-0314
UC 1157

77' : 04217-0300
RST4238

84' : 04302-0303
PRB 2

87' : 04303-0306
RST4241

91' : 04198-0228
BAL 29

91' : 04204-0257
TVB 70

94' : 04305-0315
RST4242

95' : 04300-0105
GWP 592

96' : 04205-0119
RST4769

99' : 04320-0243
RST4243

101' : 04297-0335
J 709

108' : 04223-0349
BRT 365

108' : 04302-0337
J 1087

108' : 04188-0242
STF 525AB

114' : 04321-0314
ARN 60

120' : 04326-0313
H 6 64

121' : 04337-0227
HDS 593

123' : 04202-0345
YSC 30

124' : 04238-0414
BUG 7

142' : 04163-0237
TDS2803



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.

04257-0214 BU 403 (HD 28072)

 
 
04h 25m 41.85s -02° 13' 56.8" P.A. 81.00 sep 0.9 mag 7.47,9.42 Sp F8 dist. 42.74 pc (139.42 l.y.)
 
 
Coord 2000 04257-0214 Discov num BU  403 Comp Coord arcsec 2000 04 25 41.85 -02 13 56.8
Date first 1877 Date last 2021 Obs 55
Pa first 101 Pa last 81 P.A. Now (θ) 81°
Sep first 2.0 Sep last 0.866 Sep. Now (ρ) 0.866"
Mag pri 7.47 Mag sec 9.42 delta mag (ΔM) 1.95 Spectral class F8 (yellow-white)
Pri motion ra +058 Sec motion ra +058
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 28072 Constellation Eridanus HIP 20673 Tycho2 4727-01564-1
Gaia DR2 3205679721908034688 HD 28072 ADS 3214 BD BD-02 899
Distance 42.74 Distance ly 139.42
 
 
ORBITAL ELEMENTS
 
 
Period (P)591.8784y± 531.0418 Periastron (T)1813.2516y± 38.4593 Semi-major axis (a)3.48625a± 3.49971
Eccentricity (e)0.77632± 0.18548 Inclination (i)93.249°± 2.561 Longitude of periastron (ω)273.16°± 28.04
Node (Ω)103.414°± 2.192 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 87.2 1.115
2001 87.0 1.104
2002 86.8 1.092
2003 86.5 1.081
2004 86.3 1.069
2005 86.1 1.058
2006 85.8 1.046
2007 85.6 1.035
2008 85.3 1.023
2009 85.1 1.012
2010 84.8 1.000
2011 84.6 0.989
2012 84.3 0.977
2013 84.0 0.966
2014 83.7 0.954
2015 83.4 0.943
2016 83.1 0.931
2017 82.8 0.920
2018 82.5 0.908
2019 82.2 0.897
2020 81.8 0.885
2021 81.5 0.874
2022 81.2 0.862
2023 80.8 0.851
2024 80.4 0.839
2025 80.0 0.828
2026 79.7 0.816
2027 79.2 0.805
2028 78.8 0.794
2029 78.4 0.782
2030 78.0 0.771


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


 
  


wds04257-0214a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 04257-0214 BU 403 (HD 28072) : NOTES
 
 
discov_num notes refcode
BU 403 Linear elements fit nicely at present, but this is a physical pair and
an orbit can be computed at some future date.
Rectilinear solution by Hartkopf et al. (2012). Hrt2012a
 
 
REFERENCES
 
 
refcode metd author reference
Hrt2012a orb - Hartkopf, W.I., Tokovinin, A., & Mason, B.D. 2012AJ....143...42H
Hrt2012a +lin AJ 143, 42, 2012
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04257-0214 BU 403 2001 25 87 1.1 7.47 9.42 F8 D 042541.85-021356.8
04257-0214 BU 403 2008 26 85 1.0 7.47 9.42 F8 D 042541.85-021356.8
04257-0214 BU 403 2010 28 85 1.0 7.47 9.42 F8 D 042541.85-021356.8
04257-0214 BU 403 2012 29 83 0.9 7.47 9.42 F8 NLDV 042541.85-021356.8
04257-0214 BU 403 2015 32 83 0.9 7.47 9.42 F8 NL V 042541.85-021356.8
04257-0214 BU 403 2017 40 83 0.9 7.47 9.42 F8 NL V 042541.85-021356.8
04257-0214 BU 403 2018 43 82 0.9 7.47 9.42 F8 NL V 042541.85-021356.8
04257-0214 BU 403 2019 50 82 0.9 7.47 9.42 F8 NO 042541.85-021356.8
04257-0214 BU 403 2020 51 82 0.9 7.47 9.42 F8 NO 042541.85-021356.8
04257-0214 BU 403 2021 55 81 0.9 7.47 9.42 F8 NO 042541.85-021356.8

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

 
 
WDS 04257-0214 BU 403 (HD 28072) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04257-0214 BU 403 (HD 28072) : MEASURES
 
 
No records found.

 
 
WDS 04257-0214 (HD 28072) : VIRTUAL EYEPIECE
 
 

04257-0214 BU 403A mag 7.47 Sp F8 04257-0214 BU 403B sep 0.9 P.A. 81.00 mag 9.42 virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 04257-0214 (HD 28072) : ALADIN DSS IMAGE @ 04h 25m 41.85s -02° 13' 56.8"
 
 
 
 
WDS 04257-0214 BU 403 (HD 28072) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04257-0214 BU 403 distance=0' 04251-0222 UC 1165 distance=12' 04268-0143 UC 1168 distance=35' 04259-0124 STF 547CD distance=50' 04259-0124 STF 547AB distance=51' 04259-0124 STF 547AC distance=51' 04289-0236 BRT 366 distance=53' 04271-0311 RST4240 distance=62' 04231-0117 BU 402AB distance=69' 04231-0117 BU 402AC distance=69' 04230-0314 UC 1157 distance=73' 04217-0300 RST4238 distance=77' 04302-0303 PRB 2 distance=84' 04303-0306 RST4241 distance=87' 04198-0228 BAL 29 distance=91' 04204-0257 TVB 70 distance=91' 04305-0315 RST4242 distance=94' 04300-0105 GWP 592 distance=95' 04205-0119 RST4769 distance=96' 04320-0243 RST4243 distance=99' 04297-0335 J 709 distance=101' 04223-0349 BRT 365 distance=108' 04302-0337 J 1087 distance=108' 04188-0242 STF 525AB distance=108' 04188-0242 STF 525AC distance=108' 04188-0242 STF 525BC distance=109' 04321-0314 ARN 60 distance=114' 04326-0313 H 6 64 distance=120' 04337-0227 HDS 593 distance=121' 04202-0345 YSC 30 distance=123' 04238-0414 BUG 7 distance=124' 04163-0237 TDS2803 distance=142' 04265-0008 LDS3586 distance=144' 04234-0007 HO 330 distance=145' 04215-0006 HO 329AB distance=154' 04215-0006 HO 329AC distance=154' 04222-0441 STF 536 distance=156' 04246-0452 STF 543 distance=160' 04243-0452 RST4239 distance=160' 04346-0346 RST4245 distance=163' 04358-0316 RST4246 distance=164' 04295+0025 BAL 972 distance=169' 04233-0500 HJ 342AB distance=171' 04233-0500 HJ 342AC distance=171' 04320+0010 RST4771 distance=173' 04359-0332 LDS9174 distance=173' 04363-0321 BUP 64 distance=173' 04143-0245 TDS2792 distance=174' 04360-0337 STF 571AB distance=176' 04360-0337 STF 571AC distance=176' 04360-0337 STF 571AD distance=176' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Show name coord_2000 discov# comp pa sep dist(')
Show 04257-0214 BU 403 81 0.9
Show 04251-0222 UC 1165 281 13.4 12
Show 04268-0143 UC 1168 257 25.3 35
Show 04259-0124 STF 547 CD 228 24.9 50
Show 04259-0124 STF 547 AB 119 7.6 51
Show 04259-0124 STF 547 AC 258 214.2 51
Show 04289-0236 BRT 366 272 4.8 53
Show 04271-0311 RST4240 44 1.5 62
Show 04231-0117 BU 402 AB 76 9.6 69
Show 04231-0117 BU 402 AC 110 31.6 69
Show 04230-0314 UC 1157 47 63.2 73
Show 04217-0300 RST4238 272 0.3 77
Show 04302-0303 PRB 2 140 999.9 84
Show 04303-0306 RST4241 54 2.0 87
Show 04198-0228 BAL 29 194 12.0 91
Show 04204-0257 TVB 70 60 14.3 91
Show 04305-0315 RST4242 83 0.8 94
Show 04300-0105 GWP 592 239 10.9 95
Show 04205-0119 RST4769 22 0.3 96
Show 04320-0243 RST4243 24 2.4 99
Show 04297-0335 J 709 90 1.7 101
Show 04223-0349 BRT 365 306 5.0 108
Show 04302-0337 J 1087 17 3.0 108
Show 04188-0242 STF 525 AB 244 45.3 108
Show 04188-0242 STF 525 AC 235 48.0 108
Show 04188-0242 STF 525 BC 170 7.9 109
Show 04321-0314 ARN 60 29 46.7 114
Show 04326-0313 H 6 64 117 122.9 120
Show 04337-0227 HDS 593 125 0.5 121
Show 04202-0345 YSC 30 113 0.2 123
Show 04238-0414 BUG 7 183 0.1 124
Show 04163-0237 TDS2803 258 0.5 142
Show 04265-0008 LDS3586 178 8.7 144
Show 04234-0007 HO 330 20 1.9 145
Show 04215-0006 HO 329 AB 50 45.4 154
Show 04215-0006 HO 329 AC 284 198.8 154
Show 04222-0441 STF 536 193 1.6 156
Show 04246-0452 STF 543 193 4.9 160
Show 04243-0452 RST4239 108 0.8 160
Show 04346-0346 RST4245 153 1.6 163
Show 04358-0316 RST4246 196 0.4 164
Show 04295+0025 BAL 972 233 2.7 169
Show 04233-0500 HJ 342 AB 234 17.4 171
Show 04233-0500 HJ 342 AC 80 22.3 171
Show 04320+0010 RST4771 102 2.4 173
Show 04359-0332 LDS9174 343 4.5 173
Show 04363-0321 BUP 64 171 51.5 173
Show 04143-0245 TDS2792 217 0.6 174
Show 04360-0337 STF 571 AB 259 17.9 176
Show 04360-0337 STF 571 AC 200 44.2 176
Show 04360-0337 STF 571 AD 274 59.2 176

 
 
WDS 04257-0214 : COMPONENTS
 
 
  A
B pa=81.0°
sep=0.87"
 
 
04257-0214 A
 
 
Componente originario normalizzato AB Name HD 28072 Coord arcsec 2000 042541.85-021356.8 Mag 7.47
Spectral class F8 (yellow-white) PmRA 58.00 PmDE 3.0 HIP 20673
Tycho2 4727-01564-1 HD 28072 BD BD-02 899
Tycho2
Tycho2 4727-01564-1 Pflag P RAmdeg 66.42436465 DEmdeg -2.23244975
PmRA 58.3 PmDE 3.3 E RAmdeg 6 E DEmdeg 6
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.49 EpDEm 1991.29
Num 6 Q RAmdeg 0.8 Q DEmdeg 1.5 Q pmRA 0.9
Q pmDE 1.6 BTmag 8.082 E BTmag 0.016 VTmag 7.474
E VTmag 0.012 Prox 12 TYC T HIP 20673
CCDM A RAdeg 66.42421667 DEdeg -2.23245806 EpRA 1990 1.67
EpDE 1990 1.48 E RAdeg 5.5 E DEdeg 6.1 Posflg D
Corr -0.1
Hipparcos
Catalog H HIP 20673 Proxy H RAhms 04 25 41.81
DEdms -02 13 56.8 Vmag 7.25 VarFlag R Vmag H
RAdeg 66.4242 DEdeg -2.23246 AstroRef A Plx 23.86
CCDM 04257-0214 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 89 Rho 1.215 HD 28072 BD BD-02 899
CD CP Dm number -02 899 VIred 0.63
SpType F8 R SpType Coord arcsec 2000 042541.81-021356.8
Hipparcos 2
HIP 20673 Sn 15 So 3 Nc 2
RArad 1.1593211061 DErad -0.0389637376 Plx 23.4 PmRA 62.64
PmDE 8.35 E RArad 1 E DErad 0.89 E Plx 1.04
E pmRA 1.28 E pmDE 1.14 Hpmag 7.376 E Hpmag 0.0012
SHp 0.009 VA 0 BV 0.2 E BV 0.495
VI 0.63
CCDM
Ccdm 04257-0214 RComp Comp A Note1
Note2 Discov num DRAs -0.10 DDEs 3.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.0 Sp F8 PmNote *
PmRA 70 PmDE 9 Dm number -02 899 Cat1 BD
Name2 -02 90 Cat2 AGK2/3 HD 28072 M HD
ADS BDS A 3214 M ADS BDS N IDS IDS 04206S0227A
HIC 20673
 
 
04257-0214 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 042541.91-021356.7 Mag 9.42 PmRA 58.00
PmDE 3.0 Tycho2 4727-01564-2 Calc delta mag 1.95 Calc coord yes
Tycho2
Tycho2 4727-01564-2 Pflag P RAmdeg 66.42436465 DEmdeg -2.23244975
PmRA 58.3 PmDE 3.3 E RAmdeg 6 E DEmdeg 6
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.49 EpDEm 1991.29
Num 6 Q RAmdeg 0.8 Q DEmdeg 1.5 Q pmRA 0.9
Q pmDE 1.6 BTmag 10.899 E BTmag 0.074 VTmag 9.423
E VTmag 0.030 Prox 12 TYC HIP 20673
CCDM B RAdeg 66.42455889 DEdeg -2.23243972 EpRA 1990 1.69
EpDE 1990 1.44 E RAdeg 23.5 E DEdeg 28.3 Posflg D
Corr 0.0
CCDM
Ccdm 04257-0214 RComp Comp B Note1
Note2 Discov num BU 403 DRAs DDEs
R dRAs Year 1959 Theta 092 Rho 1.5
Obs 15 Vmag 9.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 3214 M ADS BDS N IDS IDS 04206S0227B
HIC 20673