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Doubles in session


Current system
00318+5431
STT 12
Lam Cas


Nearby doubles
12' : 00327+5439
TOI1557

13' : 00311+5420
TDS1502

18' : 00321+5449
STI1371AB

22' : 00304+5449
TDS1496

23' : 00306+5412
TDS1499

24' : 00311+5454
ES 933

32' : 00353+5440
TDS1532

38' : 00275+5435
STI1352

41' : 00272+5435
TDS1467

42' : 00323+5513
TDS1512

43' : 00326+5513
RAS 17

43' : 00308+5513
TDS1501

51' : 00261+5422
TDS1461

58' : 00352+5343
TDS1531

58' : 00272+5513
STI1351

61' : 00352+5524
TDS 21

62' : 00292+5528
STI1360

62' : 00370+5513
HDS 85

64' : 00332+5528
STI1377

64' : 00312+5535
TDS1504

66' : 00365+5341
TDS1546

67' : 00275+5335
HEI 914

69' : 00310+5539
ES 116

71' : 00278+5330
LDS5275

72' : 00295+5323
ES 613

74' : 00288+5541
MLR 624



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.

00318+5431 STT 12 (Lam Cas)

 
 
00h 31m 46.32s +54° 31' 20.3" P.A. 220.00 sep 0.1 mag 5.33,5.62 Sp B8V+B9V dist. 115.74 pc (377.54 l.y.)
 
 
Coord 2000 00318+5431 Discov num STT  12 Comp Coord arcsec 2000 00 31 46.32 +54 31 20.3
Date first 1845 Date last 2019 Obs 275
Pa first 122 Pa last 219.7 P.A. Now (θ) 294.2°
Sep first 0.3 Sep last 0.117 Sep. Now (ρ) 0.087"
Mag pri 5.33 Mag sec 5.62 delta mag (ΔM) 0.29 Spectral class B8V+B9V (blue-white/blue-white)
Pri motion ra +041 Sec motion ra
Pri motion dec -015 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name Lam Cas Constellation Cassiopeia SAO 21489 HIP 2505
Tycho2 3658-02414-1 Gaia DR2 418090121095577216 HD 2772 HR 123
GC 618 ADS 434 BD BD+53 82 Bayer Lambda Cassiopeiae
Bayer name Lam Cas Flamsteed 14 Cassiopeiae Flamsteed name 14 Cas Distance 115.74
Distance ly 377.54 Bayer greek λ Cas
 
 
ORBITAL ELEMENTS
 
 
Period (P)245.7y± 35.96 Periastron (T)2025.54y± 4.65 Semi-major axis (a)0.448a± 0.028
Eccentricity (e)0.689± 0.119 Inclination (i)53.6°± 5.2 Longitude of periastron (ω)301°± 2.6
Node (Ω)17.6°± 9.6 Notesn ReferenceDru2014
Equinox Last observation2010 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 196.9 0.372
2001 197.9 0.362
2002 198.8 0.353
2003 199.9 0.343
2004 201.0 0.332
2005 202.2 0.322
2006 203.4 0.311
2007 204.8 0.299
2008 206.3 0.287
2009 207.9 0.274
2010 209.7 0.261
2011 211.6 0.248
2012 213.8 0.234
2013 216.2 0.220
2014 219.1 0.205
2015 222.3 0.189
2016 226.2 0.174
2017 230.8 0.158
2018 236.5 0.142
2019 243.5 0.126
2020 252.5 0.112
2021 263.9 0.100
2022 278.1 0.091
2023 294.2 0.087
2024 310.8 0.089
2025 325.9 0.096
2026 338.4 0.106
2027 348.5 0.118
2028 356.7 0.131
2029 3.4 0.143
2030 9.1 0.155


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


 
  


wds00318%2B5431a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 00318+5431 STT 12 (Lam Cas) : NOTES
 
 
discov_num notes refcode
STT 12 lam Cas = 14 Cas. A premature orbit has been computed.
Spectral types of primary and secondary assigned by ten Brummelaar et
al., based on adaptive optics observations. TtB2000
Corrections to Drummond et al. (2014) orbit: P=245.70 +/- 35.96y,
T0=2025.54 +/- 4.65 (Drummond, private comm.)
Uniform disk diameter 0.224 +/- 0.017 mas,
Limb darkened diameter 0.230 +/- 0.017 mas,
Teff = 12000+/-500 K based on LD although SED result (12800 +/- 500)
thought to be more accurate due to poor binary flux correction.
Radius is 2.31 +/- 0.20 \rsun. CIA2019a
 
 
REFERENCES
 
 
refcode metd author reference
CIA2019a not j Gordon, K.D., Gies, D.R., Schaefer, G.H., Huber, D. & Ireland, M. 2019ApJ...873...91G
CIA2019a ApJ 869, 37, 2018
Dru2014 A j Drummond, J.D. 2014AJ....147...65D
Dru2014 +orb AJ 147, 65, 2014
Dru2014 (Note: slight modifications to published measures, as well as additional measures,
Dru2014 provided by Drummond, private comm.)
TtB2000 Ac j ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, L.C., Jr., 2000AJ....119.2403T
TtB2000 Turner, N.H., Hartkopf, W.I., & Bagnuolo, W.G., Jr.
TtB2000 AJ 119, 2403, 2000 (magnitude differences from Mt. Wilson AO)
 
 
DISCOVERER
 
 
idgroup discov author
1 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00318+5431 STT 12 2007 281 203 0.3 5.33 5.62 B8V+B9V NOD 003146.32+543120.3
00318+5431 STT 12 2008 284 208 0.3 5.33 5.62 B8V+B9V NOD 003146.32+543120.3
00318+5431 STT 12 2010 293 210 0.2 5.33 5.62 B8V B9V NO 003146.32+543120.3
00318+5431 STT 12 2019 275 220 0.1 5.33 5.62 B8V+B9V NO 003146.32+543120.3

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

 
 
WDS 00318+5431 STT 12 (Lam Cas) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 00318+5431 STT 12 (Lam Cas) : MEASURES
 
 
No records found.

 
 
WDS 00318+5431 (Lam Cas) : VIRTUAL EYEPIECE
 
 

00318+5431 STT 12A mag 5.33 Sp B8V 00318+5431 STT 12B sep 0.1 P.A. 205.70 mag 5.62 Sp B9V 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 00318+5431 (Lam Cas) : ALADIN DSS IMAGE @ 00h 31m 46.32s +54° 31' 20.3"
 
 
 
 
WDS 00318+5431 STT 12 (Lam Cas) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

00318+5431 STT 12 distance=0' 00327+5439 TOI1557 distance=12' 00327+5439 TOI1557Aa,Ab distance=12' 00311+5420 TDS1502 distance=13' 00321+5449 STI1371AB distance=18' 00304+5449 TDS1496 distance=22' 00306+5412 TDS1499 distance=23' 00311+5454 ES 933 distance=24' 00353+5440 TDS1532 distance=32' 00275+5435 STI1352 distance=38' 00272+5435 TDS1467 distance=41' 00323+5513 TDS1512 distance=42' 00326+5513 RAS 17 distance=43' 00308+5513 TDS1501 distance=43' 00261+5422 TDS1461 distance=51' 00352+5343 TDS1531 distance=58' 00272+5513 STI1351 distance=58' 00352+5524 TDS 21 distance=61' 00292+5528 STI1360 distance=62' 00370+5513 HDS 85 distance=62' 00332+5528 STI1377 distance=64' 00312+5535 TDS1504 distance=64' 00365+5341 TDS1546 distance=66' 00275+5335 HEI 914 distance=67' 00310+5539 ES 116 distance=69' 00278+5330 LDS5275 distance=71' 00295+5323 ES 613 distance=72' 00288+5541 MLR 624 distance=74' 00343+5543 ES 117 distance=75' 00310+5546 PKO 2 distance=75' 00303+5550 STI1365 distance=76' 00363+5537 TDS1543 distance=77' 00311+5315 TDS1503 distance=77' 00311+5515 PKO 3 distance=78' 00339+5316 TDS1523 distance=79' 00229+5420 ES 42 distance=79' 00346+5316 TDS1527 distance=80' 00232+5504 STI1338 distance=82' 00351+5316 ES 935 distance=82' 00226+5417 A 907 distance=82' 00265+5540 STI1346 distance=83' 00297+5548 MLB 150 distance=85' 00342+5557 TDS1524 distance=89' 00321+5600 GRF 23 distance=89' 00420+5439 STI1415 distance=89' 00239+5531 STI1340 distance=91' 00315+5601 PKO 4 distance=91' 00219+5403 TDS1420 distance=92' 00214+5445 TDS1416 distance=92' 00249+5543 ES 932AB distance=93' 00249+5543 ES 932BC distance=94' 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 00318+5431 STT 12 220 0.1
Show 00327+5439 TOI1557 23 10.1 12
Show 00327+5439 TOI1557 Aa,Ab 136 1.4 12
Show 00311+5420 TDS1502 82 0.7 13
Show 00321+5449 STI1371 AB 20 6.2 18
Show 00304+5449 TDS1496 228 0.7 22
Show 00306+5412 TDS1499 296 0.7 23
Show 00311+5454 ES 933 268 8.6 24
Show 00353+5440 TDS1532 195 1.8 32
Show 00275+5435 STI1352 86 4.6 38
Show 00272+5435 TDS1467 129 0.4 41
Show 00323+5513 TDS1512 15 0.6 42
Show 00326+5513 RAS 17 76 0.7 43
Show 00308+5513 TDS1501 232 0.4 43
Show 00261+5422 TDS1461 107 0.6 51
Show 00352+5343 TDS1531 119 0.5 58
Show 00272+5513 STI1351 349 13.0 58
Show 00352+5524 TDS 21 187 0.9 61
Show 00292+5528 STI1360 137 11.6 62
Show 00370+5513 HDS 85 34 0.2 62
Show 00332+5528 STI1377 91 14.5 64
Show 00312+5535 TDS1504 300 1.0 64
Show 00365+5341 TDS1546 159 0.7 66
Show 00275+5335 HEI 914 218 5.9 67
Show 00310+5539 ES 116 258 7.4 69
Show 00278+5330 LDS5275 6 4.3 71
Show 00295+5323 ES 613 236 5.6 72
Show 00288+5541 MLR 624 337 0.2 74
Show 00343+5543 ES 117 56 2.9 75
Show 00310+5546 PKO 2 62 9.4 75
Show 00303+5550 STI1365 72 12.4 76
Show 00363+5537 TDS1543 35 1.4 77
Show 00311+5315 TDS1503 130 0.6 77
Show 00311+5515 PKO 3 165 9.6 78
Show 00339+5316 TDS1523 90 0.7 79
Show 00229+5420 ES 42 207 7.1 79
Show 00346+5316 TDS1527 12 1.9 80
Show 00232+5504 STI1338 322 12.3 82
Show 00351+5316 ES 935 288 5.3 82
Show 00226+5417 A 907 211 0.8 82
Show 00265+5540 STI1346 105 15.3 83
Show 00297+5548 MLB 150 125 4.9 85
Show 00342+5557 TDS1524 317 0.5 89
Show 00321+5600 GRF 23 146 77.1 89
Show 00420+5439 STI1415 254 13.9 89
Show 00239+5531 STI1340 12 13.9 91
Show 00315+5601 PKO 4 358 15.4 91
Show 00219+5403 TDS1420 323 0.6 92
Show 00214+5445 TDS1416 315 1.0 92
Show 00249+5543 ES 932 AB 321 41.9 93
Show 00249+5543 ES 932 BC 90 2.8 94

 
 
WDS 00318+5431 : COMPONENTS
 
 
  A
B pa=205.7°
sep=0.10"
 
 
00318+5431 A
 
 
Componente originario normalizzato AB Name Lam Cas Coord arcsec 2000 003146.32+543120.3 Mag 5.33
Spectral class B8V (blue-white) PmRA 41.00 PmDE -15.0 SAO 21489
HIP 2505 Tycho2 3658-02414-1 HD 2772 HR 123
GC 618 BD BD+53 82 Bayer Lambda Cassiopeiae Bayer name Lam
Flamsteed 14 Cassiopeiae Flamsteed name 14 Cas
Tycho2
Tycho2 3658-02414-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 4.652 E BTmag 0.014 VTmag 4.756
E VTmag 0.009 Prox 999 TYC T HIP 2505
CCDM AB RAdeg 7.94297694 DEdeg 54.52226306 EpRA 1990 1.56
EpDE 1990 1.62 E RAdeg 3.2 E DEdeg 3.1 Posflg P
Corr 0.3
SAO
SAO 21489 DelFlag RA1950 PmRA1950 0.005
DE1950 PmDE1950 -0.005 Vmag 4.9 SpType B8
Double code Source 70 CatNum 618 DM BD+53 82
DMcomp BDsup HD 2772 M HD 0
GC 618 RA1950rad 0.12654088 DE1950rad 0.94678056 PmRA2000 0.0052
PmDE2000 -0.01
Hipparcos
Catalog H HIP 2505 Proxy H RAhms 00 31 46.32
DEdms +54 31 20.4 Vmag 4.74 VarFlag R Vmag G
RAdeg 7.94299 DEdeg 54.5223 AstroRef A Plx 9.2
CCDM 00318+5431 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 190 Rho 0.446 HD 2772 BD BD+53 82
CD CP Dm number +53 82 VIred -0.08
SpType B8Vn R SpType Coord arcsec 2000 003146.32+543120.4
Hipparcos 2
HIP 2505 Sn 15 So 3 Nc 2
RArad 0.1386313525 DErad 0.9515940891 Plx 8.64 PmRA 41.2
PmDE -16.54 E RArad 0.17 E DErad 0.31 E Plx 0.43
E pmRA 0.29 E pmDE 0.35 Hpmag 4.7078 E Hpmag 0.0004
SHp 0.005 VA 0 BV -0.098 E BV 0.005
VI -0.08
CCDM
Ccdm 00318+5431 RComp Comp A Note1
Note2 Discov num DRAs -1.61 DDEs 20.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 5.5 Sp B8 PmNote *
PmRA 44 PmDE -5 Dm number +53 82 Cat1 BD
Name2 +54 44 Cat2 AGK2/3 HD 2772 M HD
ADS BDS A 434 M ADS BDS N IDS IDS 00262N5358A
HIC 2505
 
 
00318+5431 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 003146.32+543120.2 Mag 5.62 Spectral class B9V (blue-white)
Calc delta mag 0.29 Calc coord yes
CCDM
Ccdm 00318+5431 RComp Comp B Note1 *
Note2 Discov num STT 12 DRAs DDEs
R dRAs Year 1959 Theta 176 Rho 0.5
Obs 99 Vmag 5.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 434 M ADS BDS N IDS IDS 00262N5358B
HIC 2505