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Doubles in session


Current system
18501+3322
CIA 3 Aa1,2


Nearby doubles
9' : 18495+3316
STF2407

12' : 18506+3313
TAR 3AB

12' : 18494+3324
J 765

17' : 18488+3319
HJ 1349AB

23' : 18493+3301
ES 2287AB

25' : 18491+3343
UC 3682

28' : 18523+3321
ES 2233AB

34' : 18498+3249
H 5 40AB

39' : 18527+3301
BAR 46AB

41' : 18473+3302
TDS 945

43' : 18487+3401
HU 936

45' : 18533+3302
POP 192

46' : 18476+3248
COU1154

48' : 18536+3303
HL 9001AB

49' : 18499+3233
HO 440

50' : 18469+3254
KPP4121

50' : 18462+3328
COU1152

53' : 18518+3410
GYL 10

53' : 18537+3256
ITF 165

54' : 18496+3415
COU1155

59' : 18546+3311
ES 2234

59' : 18515+3418
DAM1253

61' : 18548+3306
DAL 10

63' : 18475+3415
KPP4122

64' : 18461+3242
SEI 575

65' : 18497+3223
J 131



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18501+3322 CIA 3 Aa1,2

 
 
18h 50m 04.79s +33° 21' 45.6" P.A. 88.00 sep 0.0 mag 3.60,4.00 Sp B8Iab dist. 294.99 pc (962.26 l.y.)
 
 
Coord 2000 18501+3322 Discov num CIA   3 Comp Aa1,2 Coord arcsec 2000 18 50 04.79 +33 21 45.6
Date first 2006 Date last 2007 Obs 14
Pa first 61 Pa last 87.7 P.A. Now (θ) 87.7°
Sep first 0.0 Sep last 0.001 Sep. Now (ρ) 0.001"
Mag pri 3.60 Mag sec 4.00 delta mag (ΔM) 0.4 Spectral class B8Iab (blue-white)
Pri motion ra +002 Sec motion ra
Pri motion dec -004 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
18501+3322 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 67451 18 50 05 +33 21 46 CIA 3 Aa1,2 2007 14 88 0.0 3.60 4.00 0.40 Y <===
Show 67451 18 50 05 +33 21 46 RBR 11 Aa,Ab 2002 1 176 0.5 3.60 8.20 4.60
Show Sheliak 67451 18 50 05 +33 21 46 STFA 39 AB 2023 120 148 45.5 3.63 6.69 3.06
Show 67451 18 50 05 +33 21 46 BU 293 AC 2023 10 247 46.6 3.63 13.00 9.37
Show 67451 18 50 05 +33 21 46 BU 293 AD 2015 8 68 64.0 3.63 14.30 10.67
Show 67451 18 50 05 +33 21 46 BU 293 AE 2023 39 317 67.1 3.63 10.14 6.51
Show 67451 18 50 05 +33 21 46 BU 293 AF 2023 39 18 85.7 3.63 10.62 6.99
Show 67451 18 50 05 +33 21 46 SMR 93 AG 2023 3 175 92.3 3.63 15.00 11.37
Show 67451 18 50 07 +33 21 07 BU 293 BE 2015 14 322 112.4 6.69 10.13 3.44
Show 67451 18 50 07 +33 21 07 BU 293 BF 2016 15 1 120.6 6.69 10.62 3.93
Show 18 50 01 +33 22 35 BU 293 EF 2015 11 66 79.4 10.14 10.62 0.48
Ninefold system
7 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Sheliak Constellation Lyra SAO 67452 HIP 92420
Tycho2 2642-02929-1 Gaia DR2 2090687795054381056 HD 174638 HR 7106
GC 25847 ADS 11745 BD BD+33 3223 Bayer Beta Lyrae
Bayer name Bet Lyr Flamsteed 10 Lyrae Flamsteed name 10 Lyr FK5 705
Distance 294.99 Distance ly 962.26 Bayer greek β Lyr
Other names SHILIAK, Shelyak
Meaning turtle (carapace)
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)12.9414d Periastron (T)54283.043d (2007.498y) Semi-major axis (a)0.865m± 0.048
Eccentricity (e)0 Inclination (i)92.25°± 0.82 Longitude of periastron (ω)0°
Node (Ω)254.39°± 0.83 Notesn ReferenceCIA2008b
Equinox2000 Last observation2007 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 76.4 0.001
2001-01-01 72.6 0.001
2002-01-01 258.4 0.000
2003-01-01 253.6 0.001
2004-01-01 87.4 0.000
2005-01-01 74.4 0.001
2006-01-01 61.8 0.000
2007-01-01 255.2 0.001
2008-01-01 250.4 0.000
2009-01-01 76.2 0.001
2010-01-01 72.4 0.001
2011-01-01 258.1 0.000
2012-01-01 253.5 0.001
2013-01-01 85.4 0.000
2014-01-01 74.3 0.001
2015-01-01 59.1 0.000
2016-01-01 255.1 0.001
2017-01-01 250.1 0.000
2018-01-01 76.1 0.001
2019-01-01 72.3 0.001
2020-01-01 257.9 0.000
2021-01-01 253.4 0.001
2022-01-01 83.9 0.000
2023-01-01 74.3 0.001
2024-01-01 55.1 0.000
2025-01-01 255.0 0.001
2026-01-01 249.8 0.000
2027-01-01 76.0 0.001
2028-01-01 72.2 0.001
2029-01-01 257.6 0.000
2030-01-01 253.4 0.001
2031-01-01 82.7 0.000
2032-01-01 74.2 0.001
2033-01-01 48.5 0.000
2034-01-01 255.0 0.001
2035-01-01 249.4 0.000
2036-01-01 75.9 0.001
2037-01-01 72.0 0.001
2038-01-01 257.4 0.001
2039-01-01 253.3 0.001
2040-01-01 81.8 0.000
2041-01-01 74.1 0.001
2042-01-01 36.0 0.000
2043-01-01 254.9 0.001
2044-01-01 249.0 0.000
2045-01-01 75.8 0.001
2046-01-01 71.9 0.001
2047-01-01 257.3 0.001
2048-01-01 253.2 0.001
2049-01-01 81.1 0.000
2050-01-01 74.0 0.001


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds18501%2B3322a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)12.9414d Periastron (T)54283.043d (2007.498y) Semi-major axis (a)0.976m± 0.083
Eccentricity (e)0 Inclination (i)92.1°± 1.24 Longitude of periastron (ω)0°
Node (Ω)253.22°± 1.97 Notesn ReferenceCIA2008b
Equinox2000 Last observation2007 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 75.1 0.001
2001-01-01 71.5 0.001
2002-01-01 257.0 0.000
2003-01-01 252.5 0.001
2004-01-01 85.4 0.000
2005-01-01 73.2 0.001
2006-01-01 61.5 0.000
2007-01-01 254.0 0.001
2008-01-01 249.5 0.000
2009-01-01 74.9 0.001
2010-01-01 71.4 0.001
2011-01-01 256.7 0.001
2012-01-01 252.4 0.001
2013-01-01 83.5 0.000
2014-01-01 73.2 0.001
2015-01-01 58.9 0.000
2016-01-01 253.9 0.001
2017-01-01 249.2 0.000
2018-01-01 74.8 0.001
2019-01-01 71.3 0.001
2020-01-01 256.5 0.001
2021-01-01 252.3 0.001
2022-01-01 82.1 0.000
2023-01-01 73.1 0.001
2024-01-01 55.1 0.000
2025-01-01 253.8 0.001
2026-01-01 248.9 0.000
2027-01-01 74.7 0.001
2028-01-01 71.2 0.001
2029-01-01 256.3 0.001
2030-01-01 252.3 0.001
2031-01-01 81.0 0.000
2032-01-01 73.0 0.001
2033-01-01 48.8 0.000
2034-01-01 253.8 0.001
2035-01-01 248.6 0.000
2036-01-01 74.6 0.001
2037-01-01 71.0 0.001
2038-01-01 256.1 0.001
2039-01-01 252.2 0.001
2040-01-01 80.2 0.000
2041-01-01 73.0 0.001
2042-01-01 36.7 0.000
2043-01-01 253.7 0.001
2044-01-01 248.1 0.000
2045-01-01 74.5 0.001
2046-01-01 70.9 0.001
2047-01-01 255.9 0.001
2048-01-01 252.1 0.001
2049-01-01 79.5 0.000
2050-01-01 72.9 0.001


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds18501%2B3322b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
ORBITAL ELEMENTS SOLUTION #3
 
 
Period (P)12.9414d Periastron (T)54283.043d (2007.498y) Semi-major axis (a)0.993m± 0.122
Eccentricity (e)0 Inclination (i)91.96°± 1.65 Longitude of periastron (ω)0°
Node (Ω)251.87°± 1.83 Notesn ReferenceCIA2008b
Equinox2000 Last observation2007 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 73.6 0.001
2001-01-01 70.3 0.001
2002-01-01 255.4 0.000
2003-01-01 251.2 0.001
2004-01-01 83.3 0.000
2005-01-01 71.9 0.001
2006-01-01 60.9 0.000
2007-01-01 252.6 0.001
2008-01-01 248.4 0.000
2009-01-01 73.5 0.001
2010-01-01 70.2 0.001
2011-01-01 255.1 0.001
2012-01-01 251.1 0.001
2013-01-01 81.5 0.000
2014-01-01 71.8 0.001
2015-01-01 58.5 0.000
2016-01-01 252.5 0.001
2017-01-01 248.2 0.000
2018-01-01 73.4 0.001
2019-01-01 70.1 0.001
2020-01-01 254.9 0.001
2021-01-01 251.0 0.001
2022-01-01 80.2 0.000
2023-01-01 71.8 0.001
2024-01-01 54.9 0.000
2025-01-01 252.4 0.001
2026-01-01 247.9 0.000
2027-01-01 73.3 0.001
2028-01-01 70.0 0.001
2029-01-01 254.7 0.001
2030-01-01 251.0 0.001
2031-01-01 79.2 0.000
2032-01-01 71.7 0.001
2033-01-01 48.9 0.000
2034-01-01 252.4 0.001
2035-01-01 247.5 0.000
2036-01-01 73.2 0.001
2037-01-01 69.8 0.001
2038-01-01 254.5 0.001
2039-01-01 250.9 0.001
2040-01-01 78.3 0.000
2041-01-01 71.6 0.001
2042-01-01 37.2 0.000
2043-01-01 252.3 0.001
2044-01-01 247.1 0.000
2045-01-01 73.1 0.001
2046-01-01 69.7 0.001
2047-01-01 254.4 0.001
2048-01-01 250.8 0.001
2049-01-01 77.7 0.000
2050-01-01 71.6 0.001


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds18501%2B3322c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic