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Doubles in session


Current system
02556+2652
STF 326 AB
HD 18143


Nearby doubles
20' : 02542+2658
A 1929

38' : 02533+2714
ALP 8AB

52' : 02554+2743
HO 316

55' : 02561+2747
UC 881

62' : 02599+2718
HO 13

72' : 02529+2551
AZC 28

72' : 02506+2629
COU 553

73' : 02545+2804
TDS2383

77' : 02563+2536
UC 889

79' : 02548+2535
KPP 93

80' : 02500+2716
STT 47AB
Bharani

85' : 02548+2916
BRT 130AB

93' : 03024+2637
LAF 29AB

98' : 03030+2650
CBL 18

101' : 02482+2704
LDS1138AB

102' : 03022+2601
NI 5

103' : 03016+2549
HDS 386

105' : 03024+2633
J 1083AB

107' : 02478+2635
UC 39AB

115' : 02519+2835
AZC 27

116' : 02525+2505
LDS1140

123' : 02588+2457
TDS2401

129' : 02493+2516
POU 228

131' : 03051+2726
UC 945

135' : 03041+2806
KPP1068

137' : 03006+2454
LDS3447



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.

02556+2652 STF 326 AB (HD 18143)

 
 
02h 55m 39.06s +26° 52' 23.6" P.A. 221.00 sep 4.6 mag 7.68,10.02 Sp K2IV+M0V dist. 23.49 pc (76.62 l.y.)
 
 
Coord 2000 02556+2652 Discov num STF 326 Comp AB Coord arcsec 2000 02 55 39.06 +26 52 23.6
Date first 1831 Date last 2020 Obs 109
Pa first 216 Pa last 221.2 P.A. Now (θ) 221.2°
Sep first 9.0 Sep last 4.58 Sep. Now (ρ) 4.58"
Mag pri 7.68 Mag sec 10.02 delta mag (ΔM) 2.34 Spectral class K2IV+M0V (yellow-orange/red)
Pri motion ra +263 Sec motion ra +270
Pri motion dec -191 Sec motion dec -168
Notes N O T (See Notes, Orbital solution, Parallax indicates physical)
rPM=0.074 (< 0.3, Physical double)
This double is physical.
 
 
02556+2652 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 18143 75644 02 55 39 +26 52 24 STF 326 AB 2020 109 221 4.6 7.68 10.02 2.34 Y <===
Show 75644 02 55 39 +26 52 24 LDS 883 AC 2020 7 266 43.8 7.68 13.86 6.18
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 18143 Constellation Aries SAO 75644 HIP 13642
Tycho2 1789-01429-1 HD 18143 GC 3512 ADS 2218
GL Gl 118.2A BD BD+26 484 Distance 23.49 Distance ly 76.62
 
 
ORBITAL ELEMENTS
 
 
Period (P) Periastron (T)2248y Semi-major axis (a)
Eccentricity (e)1 Inclination (i)81.5° Longitude of periastron (ω)308.2°
Node (Ω)34.55° Notesn ReferenceHop1967
Equinox1900 Last observation1955 Grade7(1=Definitive, 9=Indet.)
Not enought orbital data to create a graph.
 
 
WDS 02556+2652 STF 326 AB (HD 18143) : NOTES
 
 
discov_num notes refcode
STF 326 Parabolic orbit by Hopmann (1967). Hop1967
sigma = areal constant in the true orbit = 0.05215 arcsec^2/yr
q = periastron distance in the true orbit = 2".827
Data appear equally well fit by rectilinear solution - see catalog.
 
 
REFERENCES
 
 
refcode metd author reference
Hop1967 orb - Hopmann, J. 1967MiWie..13...49H
Hop1967 Mitt. Sternw. Wien 13, 49, 1967
 
 
DISCOVERER
 
 
idgroup discov author
1 LDS Luyten p.m. catalog (from additional DD list)
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02556+2652 STF 326 AB 2006 76 222 5.0 7.68 10.02 G5 NCD 025538.89+265225.3
02556+2652 STF 326 AB 2009 79 221 5.1 7.68 10.02 G5 NCD 025538.89+265225.3
02556+2652 STF 326 AB 2010 85 221 4.7 7.68 10.02 G5 NCD 025538.89+265225.3
02556+2652 STF 326 AB 2011 88 221 4.9 7.68 10.02 G5 NCD 025538.89+265225.3
02556+2652 STF 326 AB 2012 89 220 4.8 7.68 10.02 G5 NCD 025538.89+265225.3
02556+2652 STF 326 AB 2016 96 221 5.5 7.68 10.02 K2IV+M0V NC 025539.06+265223.6
02556+2652 STF 326 AB 2020 104 221 4.6 7.68 10.02 K2IV+M0V NO T 025539.06+265223.6

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

 
 
WDS 02556+2652 STF 326 AB (HD 18143) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 02556+2652 STF 326 AB (HD 18143) : MEASURES
 
 
No records found.

 
 
WDS 02556+2652 (HD 18143) : VIRTUAL EYEPIECE
 
 

02556+2652 STF 326A mag 7.68 Sp K2IV 02556+2652 STF 326B sep 4.4 P.A. 218.00 mag 10.02 Sp M0V 02556+2652 LDS 883C sep 39.0 P.A. 265.90 mag 13.86 Sp M4V 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 02556+2652 (HD 18143) : ALADIN DSS IMAGE @ 02h 55m 39.06s +26° 52' 23.6"
 
 
 
 
WDS 02556+2652 STF 326 AB (HD 18143) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

02556+2652 STF 326AB distance=0' 02542+2658 A 1929 distance=20' 02533+2714 ALP 8AB distance=38' 02533+2714 ALP 8AC distance=38' 02554+2743 HO 316 distance=52' 02561+2747 UC 881 distance=55' 02599+2718 HO 13 distance=62' 02529+2551 AZC 28 distance=72' 02506+2629 COU 553 distance=72' 02545+2804 TDS2383 distance=73' 02563+2536 UC 889 distance=77' 02548+2535 KPP 93 distance=79' 02500+2716 MCA 10Aa,Ab (Bharani) distance=80' 02500+2716 STT 47AB (Bharani) distance=80' 02500+2716 H 5 116AC (Bharani) distance=80' 02500+2716 H 6 5AD (Bharani) distance=80' 02500+2716 JNN 2AE (Bharani) distance=80' 02500+2716 JNN 2AF (Bharani) distance=80' 02500+2716 JNN 2AG (Bharani) distance=80' 02500+2716 SLV 1BC distance=80' 02548+2916 BRT 130AB distance=85' 02548+2916 BRT 130AC distance=85' 03024+2637 LAF 29AB distance=93' 03024+2637 LAF 29AC distance=93' 03024+2637 LAF 29AD distance=93' 03030+2650 CBL 18 distance=98' 02482+2704 LDS1138AB distance=101' 02482+2704 LAF 28AC distance=101' 02482+2704 HLA 2Aa,Ab distance=101' 03022+2601 NI 5 distance=102' 03016+2549 HDS 386 distance=103' 03024+2633 J 1083AB distance=105' 03024+2633 J 1083AC distance=105' 02478+2635 UC 39AB distance=107' 02519+2835 AZC 27 distance=115' 02525+2505 LDS1140 distance=116' 02588+2457 TDS2401 distance=123' 02493+2516 POU 228 distance=129' 03051+2726 UC 945 distance=131' 03041+2806 KPP1068 distance=135' 03006+2454 LDS3447 distance=137' 02455+2620 RAO 637 distance=140' 03051+2755 STF 342 distance=141' 02560+2432 LDS1141 distance=141' 02514+2443 POU 229 distance=142' 02595+2440 POU 232 distance=143' 02527+2914 COU2702 distance=148' 03040+2831 A 1824AB distance=149' 03040+2831 STF 339AB,C distance=149' 02524+2918 COU 554 distance=153' 02474+2509 POU 224 distance=153' 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 02556+2652 STF 326 AB 221 4.6
Show 02556+2652 LDS 883 AC 266 43.8
Show 02542+2658 A 1929 302 3.0 20
Show 02533+2714 ALP 8 AB 173 24.6 38
Show 02533+2714 ALP 8 AC 233 29.7 38
Show 02554+2743 HO 316 289 20.5 52
Show 02561+2747 UC 881 250 14.9 55
Show 02599+2718 HO 13 154 2.7 62
Show 02529+2551 AZC 28 184 12.7 72
Show 02506+2629 COU 553 126 0.5 72
Show 02545+2804 TDS2383 306 0.9 73
Show 02563+2536 UC 889 29 63.5 77
Show 02548+2535 KPP 93 18 4.8 79
Show Bharani 02500+2716 MCA 10 Aa,Ab 180 0.1 80
Show Bharani 02500+2716 STT 47 AB 296 34.7 80
Show Bharani 02500+2716 H 5 116 AC 238 27.7 80
Show Bharani 02500+2716 H 6 5 AD 237 122.3 80
Show Bharani 02500+2716 JNN 2 AE 32 7.4 80
Show Bharani 02500+2716 JNN 2 AF 231 9.0 80
Show Bharani 02500+2716 JNN 2 AG 25 12.3 80
Show 02500+2716 SLV 1 BC 164 30.5 80
Show 02548+2916 BRT 130 AB 288 5.3 85
Show 02548+2916 BRT 130 AC 120 5.9 85
Show 03024+2637 LAF 29 AB 166 7.6 93
Show 03024+2637 LAF 29 AC 208 8.0 93
Show 03024+2637 LAF 29 AD 53 10.4 93
Show 03030+2650 CBL 18 287 19.2 98
Show 02482+2704 LDS1138 AB 22 20.3 101
Show 02482+2704 LAF 28 AC 131 11.8 101
Show 02482+2704 HLA 2 Aa,Ab 255 0.3 101
Show 03022+2601 NI 5 356 11.0 102
Show 03016+2549 HDS 386 222 0.3 103
Show 03024+2633 J 1083 AB 166 5.0 105
Show 03024+2633 J 1083 AC 191 13.8 105
Show 02478+2635 UC 39 AB 59 10.3 107
Show 02519+2835 AZC 27 16 27.7 115
Show 02525+2505 LDS1140 136 18.6 116
Show 02588+2457 TDS2401 239 2.9 123
Show 02493+2516 POU 228 113 7.5 129
Show 03051+2726 UC 945 13 26.2 131
Show 03041+2806 KPP1068 212 8.5 135
Show 03006+2454 LDS3447 236 140.3 137
Show 02455+2620 RAO 637 142 0.2 140
Show 03051+2755 STF 342 304 3.4 141
Show 02560+2432 LDS1141 20 108.6 141
Show 02514+2443 POU 229 281 10.5 142
Show 02595+2440 POU 232 210 13.8 143
Show 02527+2914 COU2702 290 0.6 148
Show 03040+2831 A 1824 AB 272 0.4 149
Show 03040+2831 STF 339 AB,C 328 13.6 149
Show 02524+2918 COU 554 196 0.3 153

 
 
WDS 02556+2652 : COMPONENTS
 
 
  A B
B pa=218.0°
sep=4.37"
 
C pa=265.9°
sep=39.05"
pa=271.0°
sep=36.26"
 
 
02556+2652 A
 
 
Name HD 18143 Coord arcsec 2000 025539.06+265223.6 Mag 7.68 Spectral class K2IV (yellow-orange)
PmRA 263.00 PmDE -191.0 SAO 75644 HIP 13642
Tycho2 1789-01429-1 HD 18143 GC 3512 BD BD+26 484
Tycho2
Tycho2 1789-01429-1 Pflag RAmdeg 43.91276782 DEmdeg 26.87322926
PmRA 274.0 PmDE -185.4 E RAmdeg 5 E DEmdeg 6
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.59 EpDEm 1991.24
Num 6 Q RAmdeg 5.4 Q DEmdeg 5.8 Q pmRA 5.4
Q pmDE 5.8 BTmag 8.729 E BTmag 0.017 VTmag 7.683
E VTmag 0.011 Prox 55 TYC T HIP 13642
CCDM A RAdeg 43.91207028 DEdeg 26.87366722 EpRA 1990 1.81
EpDE 1990 1.53 E RAdeg 4.5 E DEdeg 6.1 Posflg
Corr -0.2
SAO
SAO 75644 DelFlag RA1950 PmRA1950 0.0197
DE1950 PmDE1950 -0.185 Vmag 7.5 SpType G5
Double code Source 70 CatNum 3512 DM BD+26 484
DMcomp BDsup HD 18143 M HD 0
GC 3512 RA1950rad 0.7534783 DE1950rad 0.46555182 PmRA2000 0.0197
PmDE2000 -0.19
Hipparcos
Catalog H HIP 13642 Proxy H RAhms 02 55 38.89
DEdms +26 52 25.3 Vmag 7.52 VarFlag R Vmag G
RAdeg 43.912 DEdeg 26.8737 AstroRef A Plx 43.71
CCDM 02556+2652 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 220 Rho 5.538 HD 18143 BD BD+26 484
CD CP Dm number +26 484 VIred 1
SpType K2 R SpType Coord arcsec 2000 025538.89+265225.3
Hipparcos 2
HIP 13642 Sn 15 So 3 Nc 2
RArad 0.7664093788 DErad 0.4690342336 Plx 42.57 PmRA 264.78
PmDE -193.91 E RArad 0.81 E DErad 0.4 E Plx 0.84
E pmRA 1.17 E pmDE 0.76 Hpmag 7.6039 E Hpmag 0.0011
SHp 0.01 VA 0 BV 0.953 E BV 0.025
VI 1
CCDM
Ccdm 02556+2652 RComp Comp A Note1
Note2 Discov num DRAs 3.03 DDEs 23.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 7.5 Sp K0 PmNote *
PmRA 266 PmDE -184 Dm number +26 484 Cat1 BD
Name2 75644 Cat2 SAO HD 18143 M HD
ADS BDS A 2218 M ADS BDS N IDS IDS 02497N2628A
HIC 13642
 
 
02556+2652 B
 
 
Coord arcsec 2000 025538.86+265220.2 Mag 10.02 Spectral class M0V (red) PmRA 270.00
PmDE -168.0 Calc delta mag 2.34 Calc coord yes
CCDM
Ccdm 02556+2652 RComp Comp B Note1
Note2 Discov num STF 326 DRAs DDEs
R dRAs Year 1955 Theta 219 Rho 6.5
Obs 27 Vmag 9.7 Sp K5 PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2218 M ADS BDS N IDS IDS 02497N2628B
HIC 13642
 
 
02556+2652 C
 
 
Coord arcsec 2000 025536.15+265220.8 Mag 13.86 Spectral class M4V (red) PmRA 270.00
PmDE -191.0 Calc delta mag 6.18 Calc coord yes
CCDM
Ccdm 02556+2652 RComp Comp C Note1
Note2 Discov num LDS 883 DRAs -0.24 DDEs 19.6
R dRAs 65 Year 1936 Theta 264 Rho 44.0
Obs 1 Vmag 15.2 Sp PmNote
PmRA 266 PmDE -184 Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 2218 M ADS BDS N IDS IDS 02497N2628C
HIC