stampa
Login

A workbench to forge your own double stars?
Create your account here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
09498+2111
KUI 44 AB


Nearby doubles
23' : 09514+2119
KPP 622

30' : 09493+2043
LDS3932

33' : 09476+2102
SLW 390

41' : 09527+2103
BRT2402

44' : 09477+2039
DAM1749

46' : 09477+2036
COU 284

47' : 09499+2157
LDS 912

58' : 09509+2016
COU 49AB

66' : 09518+2011
KPP1107

67' : 09525+2016
CVR1249

73' : 09505+2222
AZC 63

76' : 09521+2220
TDS6865

84' : 09499+1947
COU 285

86' : 09536+2141
HJ 2511

89' : 09472+1950
CVR1241

90' : 09515+1944
GRV 801

93' : 09553+2203
CVR 95

105' : 09537+2239
POU3061

106' : 09527+1934
CBL 39

110' : 09439+2221
LDS3919

113' : 09509+1919
STTA103AB

115' : 09556+1950
CVR1256

116' : 09448+1940
HJ 470

116' : 09581+2059
COU 286

118' : 09506+1914
CVR1246

121' : 09585+2119
CHE 144



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.

09498+2111 KUI 44 AB

 
 
09h 49m 50.12s +21° 10' 46.0" P.A. 227.00 sep 0.2 mag 6.62,7.31 Sp A7IVn dist. 191.57 pc (624.9 l.y.)
 
 
Coord 2000 09498+2111 Discov num KUI  44 Comp AB Coord arcsec 2000 09 49 50.12 +21 10 46.0
Date first 1935 Date last 2016 Obs 87
Pa first 222 Pa last 227 P.A. Now (θ) 224.6°
Sep first 0.3 Sep last 0.172 Sep. Now (ρ) 0.216"
Mag pri 6.62 Mag sec 7.31 delta mag (ΔM) 0.69 Spectral class A7IVn (white)
Pri motion ra -043 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
09498+2111 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 81035 09 49 50 +21 10 46 KUI 44 AB 2016 87 227 0.2 6.62 7.31 0.69 Y <===
Show DG Leo 81035 09 49 50 +21 10 46 FYM 626 AB,C 2017 5 13 12.4 6.16 14.80 8.64
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Var name DG Leo Constellation Leo SAO 81035 HIP 48218
Tycho2 1417-01531-1 Gaia DR2 640100210441202048 HD 85040 HR 3889
GC 13528 BD BD+21 2113 Flamsteed 20 Leonis Flamsteed name 20 Leo
FK5 2785 Distance 191.57 Distance ly 624.9
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier09498+2111 KUI 44
coord_arcsec_2000094950.12+211046.0
Period (P)113.1y± 3.4 Periastron (T)2000.31y± 0.29 Semi-major axis (a)0.208a± 0.006
Eccentricity (e)0.887± 0.008 Inclination (i)107.5°± 0.9 Longitude of periastron (ω)332°± 4.1
Node (Ω)27.9°± 1.3 Notesn ReferenceTam2006b
Equinox2000 Last observation2004 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 57.1 0.014
2001 15.6 0.026
2002 342.9 0.022
2003 300.8 0.022
2004 272.2 0.031
2005 257.4 0.042
2006 249.1 0.054
2007 243.8 0.067
2008 240.2 0.079
2009 237.5 0.090
2010 235.4 0.101
2011 233.7 0.112
2012 232.3 0.122
2013 231.1 0.132
2014 230.1 0.142
2015 229.2 0.151
2016 228.4 0.161
2017 227.7 0.169
2018 227.1 0.178
2019 226.5 0.186
2020 226.0 0.194
2021 225.5 0.202
2022 225.0 0.209
2023 224.6 0.216
2024 224.2 0.223
2025 223.8 0.230
2026 223.5 0.237
2027 223.2 0.243
2028 222.8 0.249
2029 222.5 0.255
2030 222.2 0.261


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


 
  


wds09498%2B2111c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 09498+2111 KUI 44 AB : NOTES
 
 
discov_num notes refcode
KUI 44 20 Leo. B is a Delta Scuti-type variable, DG Leo. Cou1955c
A is a double-lined spectroscopic binary, P=4.147d.
Radial velocity is variable, amplitude 30 km/sec (Plaskett). Two
spectra are visible (Shajn & Albitzky) Dan1952
Lampens et al. derive effective temperatures for the Aa, Ab, and B Lmp2008
components of 7470+/-220, 7390+/-220, and 7590+/-220 K, respectively.
Relative fluxes from these three late-A stars are similar: 32+/-2,
31+/-2, and 37+/-2%.
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic
masses of 4.95 +/- 1.87, 4.29, and 1.82 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Cou1955c Ma - Couteau, P. 1955JO.....38..238C
Cou1955c +Mc J. Obs. 38, 238, 1955
Dan1952 Mc - Danjon, A. 1952JO.....35...85D
Dan1952 J. Obs. 35, 85, 1952
Lmp2008 orb - Lampens, P., Fremat, Y., Hensberge, H., Tamazian, V., Docobo, J.A., & Balega, Y. 2008msah.conf...59L
Lmp2008 ESO Symp. "Multiple Stars Across the HR Diagram", p 59, 2008
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 FYM Fay, M.
28 KUI Kuiper, G.P., Schilt, van den Bos, W., and van Gent
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09498+2111 KUI 44 AB 2006 86 244 0.1 6.62 7.31 A7IVn NO 094950.12+211046.0
09498+2111 KUI 44 AB 2016 87 227 0.2 6.62 7.31 A7IVn NO 094950.12+211046.0

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

 
 
WDS 09498+2111 KUI 44 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 09498+2111 KUI 44 AB : MEASURES
 
 
No records found.

 
 
WDS 09498+2111 : VIRTUAL EYEPIECE
 
 

09498+2111 KUI 44A mag 6.62 Sp A7IVn 09498+2111 KUI 44B sep 0.2 P.A. 225.00 mag 7.31 09498+2111 FYM 626C sep 12.4 P.A. 12.50 mag 14.8 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 09498+2111 : ALADIN DSS IMAGE @ 09h 49m 50.12s +21° 10' 46.0"
 
 
 
 
WDS 09498+2111 KUI 44 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

09498+2111 KUI 44AB distance=0' 09514+2119 KPP 622 distance=23' 09493+2043 LDS3932 distance=30' 09476+2102 SLW 390 distance=33' 09527+2103 BRT2402 distance=41' 09477+2039 DAM1749 distance=44' 09477+2036 COU 284 distance=46' 09499+2157 LDS 912 distance=47' 09509+2016 GII 80Ba,Bb distance=58' 09509+2016 COU 49AB distance=58' 09518+2011 KPP1107 distance=66' 09525+2016 CVR1249 distance=67' 09505+2222 AZC 63 distance=73' 09521+2220 TDS6865 distance=76' 09499+1947 COU 285 distance=84' 09536+2141 HJ 2511 distance=86' 09472+1950 CVR1241 distance=89' 09515+1944 GRV 801 distance=90' 09553+2203 CVR 95 distance=93' 09537+2239 POU3061 distance=105' 09527+1934 CBL 39 distance=106' 09439+2221 LDS3919 distance=110' 09509+1919 STTA103AB distance=113' 09509+1919 STTA103AC distance=113' 09509+1919 STTA103BC distance=114' 09556+1950 CVR1256 distance=115' 09448+1940 HJ 470 distance=116' 09581+2059 COU 286 distance=116' 09506+1914 CVR1246 distance=118' 09585+2119 CHE 144 distance=121' 09435+1948 GWP1223 distance=122' 09426+1958 COU 283 distance=126' 09568+2232 POU3064 distance=126' 09577+2010 UC 1852 distance=127' 09491+2318 POU3060 distance=128' 09580+2208 UC 1853 distance=128' 09585+2159 CHE 143 distance=130' 09569+1946 COU 388 distance=130' 09570+1946 STF1399 distance=133' 09438+2254 POU3056 distance=134' 09574+2237 SLW 410 distance=136' 09596+2122 CHE 145 distance=137' 09438+1924 KPP 592 distance=137' 09569+1936 OL 213 distance=138' 09468+2322 POU3057 distance=139' 09590+2012 SLW 417 distance=143' 09432+1919 GRV 797 distance=145' 10002+2058 CHE 146 distance=146' 09483+2336 TDS6823 distance=147' 09452+2327 LDS5705 distance=152' 09400+2222 LDS3912AB distance=156' 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 09498+2111 KUI 44 AB 227 0.2
Show 09498+2111 FYM 626 AB,C 13 12.4
Show 09514+2119 KPP 622 145 5.7 23
Show 09493+2043 LDS3932 79 16.0 30
Show 09476+2102 SLW 390 315 104.6 33
Show 09527+2103 BRT2402 323 4.4 41
Show 09477+2039 DAM1749 281 2.6 44
Show 09477+2036 COU 284 149 0.1 46
Show 09499+2157 LDS 912 135 95.3 47
Show 09509+2016 GII 80 Ba,Bb 59 0.2 58
Show 09509+2016 COU 49 AB 355 2.4 58
Show 09518+2011 KPP1107 161 8.8 66
Show 09525+2016 CVR1249 222 3.0 67
Show 09505+2222 AZC 63 26 15.6 73
Show 09521+2220 TDS6865 279 0.7 76
Show 09499+1947 COU 285 188 0.5 84
Show 09536+2141 HJ 2511 122 13.4 86
Show 09472+1950 CVR1241 260 3.5 89
Show 09515+1944 GRV 801 30 55.0 90
Show 09553+2203 CVR 95 65 7.2 93
Show 09537+2239 POU3061 265 21.9 105
Show 09527+1934 CBL 39 325 35.4 106
Show 09439+2221 LDS3919 191 12.4 110
Show 09509+1919 STTA103 AB 130 79.9 113
Show 09509+1919 STTA103 AC 179 105.1 113
Show 09509+1919 STTA103 BC 228 79.9 114
Show 09556+1950 CVR1256 271 3.7 115
Show 09448+1940 HJ 470 212 22.4 116
Show 09581+2059 COU 286 206 1.8 116
Show 09506+1914 CVR1246 142 3.6 118
Show 09585+2119 CHE 144 266 27.4 121
Show 09435+1948 GWP1223 50 126.1 122
Show 09426+1958 COU 283 51 0.6 126
Show 09568+2232 POU3064 183 5.8 126
Show 09577+2010 UC 1852 122 33.3 127
Show 09491+2318 POU3060 340 19.3 128
Show 09580+2208 UC 1853 163 15.6 128
Show 09585+2159 CHE 143 317 22.9 130
Show 09569+1946 COU 388 62 1.6 130
Show 09570+1946 STF1399 176 30.2 133
Show 09438+2254 POU3056 280 9.2 134
Show 09574+2237 SLW 410 20 149.7 136
Show 09596+2122 CHE 145 122 27.2 137
Show 09438+1924 KPP 592 155 5.5 137
Show 09569+1936 OL 213 227 3.5 138
Show 09468+2322 POU3057 17 4.9 139
Show 09590+2012 SLW 417 236 40.3 143
Show 09432+1919 GRV 797 343 57.6 145
Show 10002+2058 CHE 146 36 29.7 146
Show 09483+2336 TDS6823 311 0.5 147
Show 09452+2327 LDS5705 53 13.2 152

 
 
WDS 09498+2111 : COMPONENTS
 
 
  A B
B pa=225.0°
sep=0.17"
 
C pa=12.5°
sep=12.36"
pa=12.9°
sep=12.50"
 
 
09498+2111 A
 
 
Coord arcsec 2000 094950.12+211046.0 Mag 6.62 Spectral class A7IVn (white) PmRA -43.00
PmDE -12.0 SAO 81035 HIP 48218 Tycho2 1417-01531-1
HD 85040 HR 3889 GC 13528 BD BD+21 2113
Flamsteed 20 Leonis Flamsteed name 20 Leo FK5 2785
Tycho2
Tycho2 1417-01531-1 Pflag RAmdeg 147.45872979 DEmdeg 21.17942359
PmRA -43.6 PmDE -15.0 E RAmdeg 3 E DEmdeg 4
E pmRA 0.8 E pmDE 0.7 EpRAm 1991.36 EpDEm 1990.72
Num 22 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.3 BTmag 6.386 E BTmag 0.014 VTmag 6.109
E VTmag 0.010 Prox 999 TYC T HIP 48218
CCDM AB RAdeg 147.45883889 DEdeg 21.17946056 EpRA 1990 1.60
EpDE 1990 1.17 E RAdeg 3.4 E DEdeg 3.8 Posflg P
Corr 0.5
SAO
SAO 81035 DelFlag RA1950 PmRA1950 -0.0032
DE1950 PmDE1950 -0.016 Vmag 6 SpType F0
Double code Source 70 CatNum 13528 DM BD+21 2113
DMcomp BDsup HD 85040 M HD 0
GC 13528 RA1950rad 2.56144243 DE1950rad 0.37373359 PmRA2000 -0.0033
PmDE2000 -0.011
Hipparcos
Catalog H HIP 48218 Proxy H RAhms 09 49 50.12
DEdms +21 10 46.0 Vmag 6.1 VarFlag 1 R Vmag G
RAdeg 147.459 DEdeg 21.1795 AstroRef * Plx 6.34
CCDM 09498+2111 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AB
Theta 209 Rho 0.171 HD 85040 BD BD+21 2113
CD CP Dm number +21 2113 VIred 0.26
SpType A8IV R SpType Coord arcsec 2000 094950.12+211046.0
Hipparcos 2
HIP 48218 Sn 55 So 3 Nc 2
RArad 2.5736422962 DErad 0.3696512767 Plx 5.22 PmRA -44.29
PmDE -14.83 E RArad 0.48 E DErad 0.39 E Plx 0.63
E pmRA 0.58 E pmDE 0.4 Hpmag 6.1544 E Hpmag 0.001
SHp 0.01 VA 2 BV 0.257 E BV 0.004
VI 0.26
CCDM
Ccdm 09498+2111 RComp Comp A Note1
Note2 Discov num DRAs 2.06 DDEs -14.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 6.6 Sp F0 PmNote *
PmRA -46 PmDE -16 Dm number +21 2113 Cat1 BD
Name2 +21 1070 Cat2 AGK2/3 HD 85040 M HD
ADS BDS M ADS BDS N IDS IDS 09442N2139A
HIC 48218
 
 
09498+2111 B
 
 
Var name DG Leo Coord arcsec 2000 094950.11+211045.9 Mag 7.31 Calc delta mag 0.69
Calc coord yes
CCDM
Ccdm 09498+2111 RComp Comp B Note1
Note2 Discov num KUI 44 DRAs DDEs
R dRAs Year 1935 Theta 214 Rho 0.3
Obs 22 Vmag 6.9 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 09442N2139B
HIC 48218
 
 
09498+2111 C
 
 
Coord arcsec 2000 094950.31+211058.1 Mag 14.8 Calc delta mag 8.18 Calc coord yes