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Doubles in session


Current system
04242-5704
RMK 4
HD 28255


Nearby doubles
21' : 04256-5721
NSN 189

59' : 04308-5727
HDS 582AB

63' : 04266-5803
TDS 140

69' : 04325-5657
SKF1523

76' : 04275-5554
COO 22

76' : 04273-5816
WFC 24

78' : 04157-5631
UC 1144AB

79' : 04334-5729
RST 108

80' : 04150-5732
KPP1435

89' : 04153-5615
TOI 322

96' : 04242-5529
UC 1161

101' : 04282-5839
TDS2860

101' : 04144-5604
HJ 3635

102' : 04352-5619
RST2352

107' : 04307-5838
LDS 123AB

110' : 04356-5608
TOI 379

115' : 04108-5633
KPP 758

120' : 04234-5505
KPP1269

125' : 04094-5739
RST 99

126' : 04325-5851
WFC 27

136' : 04160-5507
RST 101

137' : 04363-5531
KPP2021

147' : 04340-5503
B 2092AB

148' : 04165-5918
JSP 56

151' : 04408-5602
FIN 88AB

156' : 04194-5935
TDS 134



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.

04242-5704 RMK 4 (HD 28255)

 
 
04h 24m 12.21s -57° 04' 16.8" P.A. 248.00 sep 5.3 mag 6.87,7.23 Sp G4V dist. 27.7 pc (90.36 l.y.)
 
 
Coord 2000 04242-5704 Discov num RMK   4 Comp Coord arcsec 2000 04 24 12.21 -57 04 16.8
Date first 1834 Date last 2015 Obs 55
Pa first 226 Pa last 248.3 P.A. Now (θ) 248.3°
Sep first 5.0 Sep last 5.34 Sep. Now (ρ) 5.34"
Mag pri 6.87 Mag sec 7.23 delta mag (ΔM) 0.36 Spectral class G4V (yellow)
Pri motion ra -104 Sec motion ra -100
Pri motion dec -074 Sec motion dec -060
Notes C (Has orbit and linear solution)
rPM=0.114 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 28255 Constellation Dorado SAO 233506 HIP 20552
Tycho2 8505-01902-1 Gaia DR2 4775347916201249792 HD 28255 HR 1405
GC 5366 GL Wo 9155A CP CP-57 659 Distance 27.7
Distance ly 90.36
 
 
ORBITAL ELEMENTS
 
 
Period (P)2400y± 400 Periastron (T)1900y± 110 Semi-major axis (a)8a± 1.1
Eccentricity (e)0.22± 0.05 Inclination (i)70°± 2 Longitude of periastron (ω)200°± 30
Node (Ω)54.9°± 0.7 Notes ReferenceLRR2018b
Equinox2000 Last observation2015 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 253.1 4.814
2001 253.2 4.800
2002 253.3 4.786
2003 253.5 4.773
2004 253.6 4.759
2005 253.8 4.745
2006 253.9 4.732
2007 254.0 4.718
2008 254.2 4.704
2009 254.3 4.690
2010 254.5 4.676
2011 254.6 4.662
2012 254.8 4.649
2013 254.9 4.635
2014 255.1 4.621
2015 255.2 4.607
2016 255.4 4.592
2017 255.5 4.578
2018 255.7 4.564
2019 255.8 4.550
2020 256.0 4.536
2021 256.1 4.522
2022 256.3 4.507
2023 256.5 4.493
2024 256.6 4.479
2025 256.8 4.465
2026 256.9 4.450
2027 257.1 4.436
2028 257.3 4.421
2029 257.4 4.407
2030 257.6 4.393


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


 
  


wds04242-5704a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 04242-5704 RMK 4 (HD 28255) : NOTES
 
 
discov_num notes refcode
RMK 4 Rectilinear solution by Letchford et al. (2018). LRR2018a
 
 
REFERENCES
 
 
refcode metd author reference
LRR2018a lin - Letchford, R.R., White, G.L. & Ernest, A.D. 2018JDSO...14..208L
LRR2018a JDSO 14, 208, 2018 .
LRR2018b orb - Letchford, R.R., White, G.L. & Ernest, A.D. 2018JDSO...14..761L
LRR2018b JDSO 14, 761, 2018 .
 
 
DISCOVERER
 
 
idgroup discov author
1 RMK Rumker, C. (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04242-5704 RMK 4 2000 48 246 5.5 6.87 7.23 G4V D 042412.21-570416.8
04242-5704 RMK 4 2001 49 247 5.4 6.87 7.23 G4V D 042412.21-570416.8
04242-5704 RMK 4 2010 51 248 5.4 6.87 7.23 G4V D 042412.21-570416.8
04242-5704 RMK 4 2015 54 248 5.3 6.87 7.23 G4V L 042412.21-570416.8

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

 
 
WDS 04242-5704 RMK 4 (HD 28255) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 04242-5704 RMK 4 (HD 28255) : MEASURES
 
 
No records found.

 
 
WDS 04242-5704 (HD 28255) : VIRTUAL EYEPIECE
 
 

04242-5704 RMK 4A mag 6.87 Sp G4V 04242-5704 RMK 4B sep 3.3 P.A. 233.80 mag 7.23 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 04242-5704 (HD 28255) : ALADIN DSS IMAGE @ 04h 24m 12.21s -57° 04' 16.8"
 
 
 
 
WDS 04242-5704 RMK 4 (HD 28255) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

04242-5704 RMK 4 distance=0' 04256-5721 NSN 189 distance=21' 04308-5727 HDS 582AB distance=59' 04308-5727 TOK 429Aa,Ab distance=59' 04266-5803 TDS 140 distance=63' 04325-5657 SKF1523 distance=69' 04275-5554 COO 22 distance=76' 04273-5816 WFC 24 distance=76' 04157-5631 UC 1144AB distance=78' 04157-5631 UC 1144Aa,Ab distance=78' 04334-5729 RST 108 distance=79' 04150-5732 KPP1435 distance=80' 04153-5615 TOI 322 distance=89' 04242-5529 UC 1161 distance=96' 04282-5839 TDS2860 distance=101' 04144-5604 HJ 3635 distance=101' 04352-5619 RST2352 distance=102' 04307-5838 LDS 123AB distance=107' 04307-5838 LDS 123AC distance=107' 04356-5608 TOI 379 distance=110' 04108-5633 KPP 758 distance=115' 04234-5505 KPP1269 distance=120' 04094-5739 RST 99 distance=125' 04325-5851 WFC 27 distance=126' 04160-5507 RST 101 distance=136' 04363-5531 KPP2021 distance=137' 04340-5503 B 2092AB distance=147' 04340-5503 HJ 3668AB,C distance=147' 04165-5918 JSP 56 distance=148' 04408-5602 FIN 88AB distance=151' 04408-5602 FIN 88AC distance=151' 04194-5935 TDS 134 distance=156' 04253-5428 RST 104 distance=157' 04422-5607 HDS 605 distance=159' 04117-5910 JSP 54 distance=160' 04420-5823 TVB 75 distance=163' 04357-5450 HU 1373 distance=165' 04291-5423 TSN 19 distance=167' 04048-5811 HDS 516 distance=170' 04403-5857 HJ 3683 distance=171' 04371-5452 RST 110 distance=172' 04211-5414 TDS2830 distance=173' 04099-5917 UC 1126 distance=175' 04422-5843 KPP2239 distance=175' 04351-5939 UC 1190 distance=177' 04400-5909 KPP2813 distance=178' 04103-5448 LDS 113 distance=178' 04319-5952 HJ 3665AB distance=179' 04188-5408 HDS 549 distance=182' 04286-5402 TDS2864 distance=187' 04311-5406 KPP3574 distance=188' 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 04242-5704 RMK 4 248 5.3
Show 04256-5721 NSN 189 331 5.6 21
Show 04308-5727 HDS 582 AB 210 0.8 59
Show 04308-5727 TOK 429 Aa,Ab 169 0.1 59
Show 04266-5803 TDS 140 15 1.0 63
Show 04325-5657 SKF1523 207 11.6 69
Show 04275-5554 COO 22 140 6.5 76
Show 04273-5816 WFC 24 309 10.3 76
Show 04157-5631 UC 1144 AB 336 25.4 78
Show 04157-5631 UC 1144 Aa,Ab 263 0.2 78
Show 04334-5729 RST 108 30 3.5 79
Show 04150-5732 KPP1435 170 10.8 80
Show 04153-5615 TOI 322 126 0.2 89
Show 04242-5529 UC 1161 223 28.2 96
Show 04282-5839 TDS2860 289 1.0 101
Show 04144-5604 HJ 3635 333 8.4 101
Show 04352-5619 RST2352 330 1.0 102
Show 04307-5838 LDS 123 AB 219 67.9 107
Show 04307-5838 LDS 123 AC 157 111.1 107
Show 04356-5608 TOI 379 19 0.1 110
Show 04108-5633 KPP 758 261 6.6 115
Show 04234-5505 KPP1269 56 9.7 120
Show 04094-5739 RST 99 335 2.8 125
Show 04325-5851 WFC 27 74 4.3 126
Show 04160-5507 RST 101 35 2.2 136
Show 04363-5531 KPP2021 54 16.1 137
Show 04340-5503 B 2092 AB 212 0.1 147
Show 04340-5503 HJ 3668 AB,C 94 77.2 147
Show 04165-5918 JSP 56 37 13.0 148
Show 04408-5602 FIN 88 AB 27 1.8 151
Show 04408-5602 FIN 88 AC 210 6.8 151
Show 04194-5935 TDS 134 35 1.0 156
Show 04253-5428 RST 104 169 2.3 157
Show 04422-5607 HDS 605 191 0.3 159
Show 04117-5910 JSP 54 288 4.3 160
Show 04420-5823 TVB 75 245 14.0 163
Show 04357-5450 HU 1373 77 1.6 165
Show 04291-5423 TSN 19 115 137.5 167
Show 04048-5811 HDS 516 164 4.9 170
Show 04403-5857 HJ 3683 90 3.8 171
Show 04371-5452 RST 110 322 0.6 172
Show 04211-5414 TDS2830 6 0.8 173
Show 04099-5917 UC 1126 13 14.1 175
Show 04422-5843 KPP2239 14 18.6 175
Show 04351-5939 UC 1190 302 35.0 177
Show 04400-5909 KPP2813 175 3.1 178
Show 04103-5448 LDS 113 165 6.3 178
Show 04319-5952 HJ 3665 AB 58 6.0 179
Show 04188-5408 HDS 549 77 0.3 182
Show 04286-5402 TDS2864 147 1.4 187
Show 04311-5406 KPP3574 114 1.6 188

 
 
WDS 04242-5704 : COMPONENTS
 
 
  A
B pa=233.8°
sep=3.34"
 
 
04242-5704 A
 
 
Componente originario normalizzato AB Name HD 28255 Coord arcsec 2000 042412.21-570416.8 Mag 6.87
Spectral class G4V (yellow) PmRA -104.00 PmDE -74.0 SAO 233506
HIP 20552 Tycho2 8505-01902-1 HD 28255 HR 1405
GC 5366 CP CP-57 659
Tycho2
Tycho2 8505-01902-1 Pflag RAmdeg 66.05088554 DEmdeg -57.07132848
PmRA -102.2 PmDE -71.0 E RAmdeg 5 E DEmdeg 4
E pmRA 1.8 E pmDE 1.8 EpRAm 1991.45 EpDEm 1991.65
Num 8 Q RAmdeg 2.0 Q DEmdeg 1.5 Q pmRA 2.0
Q pmDE 1.5 BTmag 7.575 E BTmag 0.016 VTmag 6.871
E VTmag 0.010 Prox 57 TYC T HIP 20552
CCDM A RAdeg 66.05132500 DEdeg -57.07116556 EpRA 1990 1.58
EpDE 1990 1.74 E RAdeg 4.7 E DEdeg 4.2 Posflg
Corr 0.2
SAO
SAO 233506 DelFlag RA1950 PmRA1950 -0.0122
DE1950 PmDE1950 -0.075 Vmag 7.1 SpType G0
Double code Source 70 CatNum 5366 DM CP-57 659
DMcomp A BDsup HD 28255 M HD 1
GC 5366 RA1950rad 1.14853255 DE1950rad -0.99804835 PmRA2000 -0.012
PmDE2000 -0.077
Hipparcos
Catalog H HIP 20552 Proxy H RAhms 04 24 12.32
DEdms -57 04 16.2 Vmag 6.28 VarFlag R Vmag G
RAdeg 66.0513 DEdeg -57.0712 AstroRef A Plx 36.92
CCDM 04242-5704 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 246 Rho 5.602 HD 28255 BD
CD CP CP-57 659 Dm number -57 659 VIred 0.72
SpType G4V+... R SpType Coord arcsec 2000 042412.32-570416.2
Hipparcos 2
HIP 20552 Sn 17 So 3 Nc 2
RArad 1.1528132021 DErad -0.9960795946 Plx 36.1 PmRA -105.12
PmDE -75.61 E RArad 0.75 E DErad 0.57 E Plx 0.58
E pmRA 0.88 E pmDE 0.68 Hpmag 6.4102 E Hpmag 0.0009
SHp 0.008 VA 0 BV 0.659 E BV 0.004
VI 0.72
CCDM
Ccdm 04242-5704 RComp Comp A Note1
Note2 Discov num DRAs 0.23 DDEs -16.8
R dRAs 10 Year Theta Rho
Obs 2 Vmag 7.1 Sp G0 PmNote *
PmRA -103 PmDE -69 Dm number -57 659 Cat1 CPD
Name2 233506 Cat2 SAO HD 28255 M HD
ADS BDS M ADS BDS N IDS IDS 04222S5718A
HIC 20552
 
 
04242-5704 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 042411.88-570418.8 Mag 7.23 PmRA -100.00
PmDE -60.0 Tycho2 8505-01904-1 Calc delta mag 0.36 Calc coord yes
Tycho2
Tycho2 8505-01904-1 Pflag RAmdeg 66.04829098 DEmdeg -57.07194859
PmRA -91.7 PmDE -60.8 E RAmdeg 5 E DEmdeg 5
E pmRA 2.2 E pmDE 2.1 EpRAm 1991.54 EpDEm 1991.72
Num 6 Q RAmdeg 1.6 Q DEmdeg 1.2 Q pmRA 1.5
Q pmDE 1.3 BTmag 8.033 E BTmag 0.016 VTmag 7.233
E VTmag 0.011 Prox 57 TYC T HIP 20552
CCDM B RAdeg 66.04868278 DEdeg -57.07181028 EpRA 1990 1.64
EpDE 1990 1.82 E RAdeg 5.4 E DEdeg 4.6 Posflg
Corr 0.3
CCDM
Ccdm 04242-5704 RComp Comp B Note1
Note2 Discov num RMK 4 DRAs -0.39 DDEs -19.1
R dRAs 91 Year 1955 Theta 242 Rho 5.9
Obs 24 Vmag 7.5 Sp PmNote *
PmRA -101 PmDE -57 Dm number Cat1
Name2 233505 Cat2 SAO HD M HD
ADS BDS M ADS BDS N IDS IDS 04222S5718B
HIC 20552