11182+3132 STF 1523 AB (Alula Australis)

 
 
11h 18m 10.90s +31° 31' 45.0" P.A. 152.00 sep 2.3 mag 4.33,4.80 Sp F9V+G9V dist. 10.42 pc (33.99 l.y.)
 
 
Coord 2000 11182+3132 Discov num STF1523 Comp AB Coord arcsec 2000 11 18 10.90 +31 31 45.0
Date first 1819 Date last 2020 Obs 1664
Pa first 285 Pa last 151.5 P.A. Now (θ) 142.1°
Sep first 2.6 Sep last 2.31 Sep. Now (ρ) 2.423"
Mag pri 4.33 Mag sec 4.80 delta mag (ΔM) 0.47 Spectral class F9V+G9V (yellow-white/yellow)
Pri motion ra -454 Sec motion ra -454
Pri motion dec -591 Sec motion dec -591
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
11182+3132 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Alula Australis 62484 11 18 11 +31 31 45 STF 1523 AB 2020 1664 152 2.3 4.33 4.80 0.47 Y <===
Show 62484 11 18 11 +31 31 45 POP 1219 AC 2015 5 331 59.7 4.33 15.00 10.67
Show 62484 11 18 11 +31 31 45 WTE 1 AD 2012 15 136 511.4 2.14 18.75 16.61
Show 62484 11 18 11 +31 31 46 CHR 178 Ba,Bb 1994 2 75 0.0 4.40
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Alula Australis Var name NSV5165 UMa Constellation Ursa Major SAO 62484
HIP 55203 Tycho2 2520-02634-1 HD 98231 HR 4375
GC 15537 ADS 8119 GL Gl 423A BD BD+32 2132
Bayer Xi Ursae Majoris Bayer name Xi UMa Flamsteed 53 Ursae Majoris Flamsteed name 53 UMa
Distance 10.42 Distance ly 33.99 Bayer greek ξ UMa
Meaning first (leap gazelle), South
 
 
ORBITAL ELEMENTS
 
 
Period (P)59.8903y± 0.0419 Periastron (T)1935.17y± 0.0473 Semi-major axis (a)2.50442a± 0.00535
Eccentricity (e)0.40432± 0.00204 Inclination (i)122.187°± 0.192 Longitude of periastron (ω)126.964°± 0.343
Node (Ω)100.939°± 0.202 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade1(1=Definitive, 9=Indet.)
label theta rho
2000 273.5 1.770
2001 267.8 1.803
2002 262.1 1.809
2003 256.5 1.795
2004 250.7 1.767
2005 244.7 1.732
2006 238.4 1.694
2007 231.9 1.658
2008 225.1 1.629
2009 218.1 1.608
2010 210.9 1.599
2011 203.8 1.604
2012 196.7 1.622
2013 189.8 1.655
2014 183.3 1.701
2015 177.1 1.758
2016 171.4 1.825
2017 166.1 1.901
2018 161.2 1.982
2019 156.8 2.068
2020 152.6 2.156
2021 148.8 2.246
2022 145.3 2.335
2023 142.1 2.423
2024 139.1 2.509
2025 136.2 2.591
2026 133.6 2.668
2027 131.1 2.741
2028 128.7 2.807
2029 126.4 2.867
2030 124.2 2.919


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



 
 


wds11182%2B3132b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier11182+3132 STF1523 A
coord_arcsec_2000111810.90+313144.9
Period (P)1.834y Periastron (T)1992.29y Semi-major axis (a)0.054a
Eccentricity (e)0.61 Inclination (i)91° Longitude of periastron (ω)324°
Node (Ω)318° Notesn ReferenceHei1996b
Equinox Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 142.0 0.015
2001 138.1 0.070
2002 139.8 0.037
2003 137.7 0.054
2004 139.2 0.055
2005 136.7 0.021
2006 138.8 0.068
2007 318.0 0.023
2008 138.5 0.075
2009 313.6 0.010
2010 138.3 0.077
2011 142.2 0.015
2012 138.1 0.071
2013 139.8 0.037
2014 137.8 0.054
2015 139.2 0.054
2016 136.7 0.022
2017 138.8 0.067
2018 318.0 0.022
2019 138.6 0.075
2020 313.9 0.010
2021 138.3 0.077
2022 142.3 0.014
2023 138.1 0.071
2024 139.8 0.036
2025 137.8 0.055
2026 139.2 0.054
2027 136.8 0.023
2028 138.8 0.067
2029 318.1 0.022
2030 138.6 0.075


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



 
 


wds11182%2B3132t.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 11182+3132 STF 1523 AB (Alula Australis) : NOTES
 
 
discov_num notes refcode
STF1523 xi UMa = 53 UMa = Alula Australis. A is known to have an unseen
companion, P = 1.83y. B is a spectroscopic binary. The first binary
star orbit was computed by Savary, a "librarian-observer" at Paris Sav1830
Observatory giving courses in "social arithmetic," i.e., statistics.
Spectral types and masses of components assigned by ten Brummelaar et
al., based on adaptive optics observations. TtB2000
Preliminary Keplerian AB 2-orbit model by Soderhjelm (1999) gives Sod1999
good solution (failure in HIP).
Many-body perturbations observable but not yet studied. Cf. Aa,Bb
analysis in Mason et al. (1995) Msn1995
Both orbits are visual and spectroscopic. The orbit of the visible
AB pair includes the secular perturbations in inclination, node,
longitude of periastron, and K. Star B is also SB1, P = 3.98 d.
The short-period pair has been resolved by infrared speckle
interferometry Mcy1983
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
HR 4375 (A component of STF1523) was misidentified as HR 4374 (B
component) in McAlister (1978). McA1978c
An orbital analysis of xi UMa, including the AB pair, the astrometric
companion, and the newly-discovered Bc companion, has been published
by Mason et al. (1995). Msn1995
AB: H 1 2. MEv2010
CHR 178 Bb. Abt & Biggs (1972) note variable RV. AbH1972
Given the typical lack of accuracy associated with astrometric orbits Tok2010b
it is possible that in the doubling of peaks CHR 178 is actually the
known Aa,Ab observing when the faint Ab was flaring. In this
interpretation, the second elongated observation of CHR 178 is assumed
to be false.
WTE 1 AD: Faint T8.5 brown dwarf companion at separation ~4000au exhibits
common proper motion. IR luminosity and color suggest that mass of
companion 14 and 38 Mjup for system ages 2 and 8 Gyr, respectively. WtE2013H
 
 
REFERENCES
 
 
refcode metd author reference
AbH1972 - Abt. H.A. & Biggs, E.S. 1972bsrv.book.....A
AbH1972 Bibliography of Stellar Radial Velocities
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
McA1978c Sc j McAlister, H.A. 1978PASP...90..288M
McA1978c PASP 90, 288, 1978
Mcy1983 Si - McCarthy, D.W. 1983nssl.conf..107M
Mcy1983 +C IAU Colloq 76, 107, 1983
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Msn1995 Sc j Mason, B.D., McAlister, H.A., Hartkopf, W.I., & Shara, M.M. 1995AJ....109..332M
Msn1995 +orb AJ 109, 332, 1995
Sav1830 orb - Savary .
Sav1830 Conn. des Temps, 1830
Sod1999 orb - Soderhjelm, S. 1999A&A...341..121S
Sod1999 A&A 341, 121, 1999
Tok2010b S - Tokovinin, A. ...................
Tok2010b private communication
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 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
3 POP Popovic, G.M.
132 POP Popovic, G.M. (Cvetkovic, Z., Pavlovic, R., Strigachev, A., Novakovic, B., &
132 POP Popovic, G.M.)
133 STF Struve, F.G.W.
166 WTE Wright, E.L., Skrutskie, M.F., Kirkpatrick, J.D., Gelino, C.R., Griffith, R.L.,
166 WTE Marsh, K.A., Jarrett, T., Nelson, M.J., Borish, H.J., Mace, G., Mainzer, A.K.,
166 WTE Eisenhardt, P.R., et al.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11182+3132 STF1523 AB 2007 1566 231 1.7 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2008 1571 225 1.6 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2009 1579 215 1.6 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2010 1590 211 1.6 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2011 1608 198 1.5 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2012 1608 190 1.4 4.33 4.80 F9V G9V NOD 111810.92+313145.1
11182+3132 STF1523 AB 2013 1612 188 1.6 4.33 4.80 F9V G9V NOD 111810.90+313144.9
11182+3132 STF1523 AB 2014 1600 180 1.7 4.33 4.80 F9V G9V NOD 111810.90+313144.9
11182+3132 STF1523 AB 2015 1614 175 1.8 4.33 4.80 F9V+G9V NO 111810.90+313145.0
11182+3132 STF1523 AB 2016 1621 170 1.9 4.33 4.80 F9V+G9V NO 111810.90+313145.0
11182+3132 STF1523 AB 2017 1630 164 1.9 4.33 4.80 F9V+G9V NO 111810.90+313145.0
11182+3132 STF1523 AB 2018 1639 161 2.0 4.33 4.80 F9V+G9V NO 111810.90+313145.0
11182+3132 STF1523 AB 2019 1640 155 2.1 4.33 4.80 F9V+G9V NO 111810.90+313145.0
11182+3132 STF1523 AB 2020 1658 152 2.3 4.33 4.80 F9V+G9V NO 111810.90+313145.0

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

 
 
WDS 11182+3132 STF 1523 AB (Alula Australis) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11182+3132 STF 1523 AB (Alula Australis) : MEASURES
 
 
No records found.

 
 
WDS 11182+3132 (Alula Australis) : VIRTUAL EYEPIECE
 
 

11182+3132 STF1523A mag 4.33 Sp F9V 11182+3132 CHR 178B sep 0.9 P.A. 42.40 mag 4.4 Sp G0V 11182+3132 CHR 178Bb sep 1.0 P.A. 43.10 11182+3132 POP1219C sep 57.7 P.A. 334.40 mag 15 11182+3132 WTE   1D sep 476.7 P.A. 140.60 mag 18.75 Sp T8.5 virtual eyepiece
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Radius:
Components only
 
 
WDS 11182+3132 (Alula Australis) : ALADIN DSS IMAGE @ 11h 18m 10.90s +31° 31' 45.0"
 
 
 
 
WDS 11182+3132 STF 1523 AB (Alula Australis) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


11182+3132  STF1523AB (Alula Australis) distance=0' 11182+3132  CHR 178Ba,Bb distance=1' 11162+3136  A  2157 distance=26' 11211+3134  MLB 849 distance=38' 11158+3202  CBL 334 distance=43' 11129+3130  HEI  12 distance=68' 11125+3205  COU 963 distance=80' 11169+3251  RAO 654 distance=81' 11240+3052  UC 2129 distance=85' 11218+3018  KPP3843 distance=88' 11230+3027  GRV 834 distance=90' 11133+3238  SLN  67 distance=91' 11118+3218  CVR 115 distance=94' 11185+3306  STF1524AB (Alula Borealis) distance=94' 11185+3306  BUP9001AC (Alula Borealis) distance=94' 11185+3306  DAM 652AD (Alula Borealis) distance=94' 11227+3018  NI   25 distance=95' 11107+3110  HJ 2562 distance=99' 11225+3256  CVR 608 distance=101' 11257+3056  UC 2136 distance=104' 11100+3114  RAO 652 distance=104' 11108+3215  FAR  61 distance=104' 11227+3305  CVR1363 distance=110' 11111+3027  STT 231AB distance=113' 11111+3027  STT 231AD distance=113' 11111+3027  STT 231AC distance=113' 11111+3027  STT 231CE distance=113' 11111+3027  STT 231BC distance=113' 11227+3313  CVR1364 distance=117' 11161+3329  GMZ 187 distance=120' 11087+3124  FAR  60 distance=122' 11243+3306  HDS1621 distance=123' 11185+3335  CVR1358 distance=124' 11283+3136  JNN  76 distance=130' 11283+3144  CRB  89 distance=130' 11171+3340  GMZ 188 distance=130' 11133+3327  HO  254 distance=131' 11139+3331  GMZ 186 distance=132' 11280+3216  SLW 602 distance=133' 11171+2919  HDS1608 distance=134' 11285+3113  SEI 525 distance=134' 11184+2913  CBL 336 distance=139' 11195+3350  GMZ 192 distance=139' 11177+3351  GMZ 189AB distance=140' 11073+3146  CVR 113 distance=141' 11099+3001  CVR1346 distance=141' 11289+3206  CVR 614 distance=141' 11182+3354  GMZ 191 distance=143' 11214+3348  GMZ 193BC distance=143' 11072+3204  SEI 523 distance=143' 11287+3224  COU 781 distance=144' grafico limitrofi
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Show name coord_2000 discov# comp pa sep dist(')
Show Alula Australis 11182+3132 STF1523 AB 152 2.3
Show Alula Australis 11182+3132 POP1219 AC 331 59.7
Show Alula Australis 11182+3132 WTE 1 AD 136 511.4
Show 11182+3132 CHR 178 Ba,Bb 75 0.0 1
Show 11162+3136 A 2157 3 1.4 26
Show 11211+3134 MLB 849 174 5.1 38
Show 11158+3202 CBL 334 157 38.8 43
Show 11129+3130 HEI 12 120 2.4 68
Show 11125+3205 COU 963 187 1.1 80
Show 11169+3251 RAO 654 270 0.8 81
Show 11240+3052 UC 2129 81 22.9 85
Show 11218+3018 KPP3843 292 5.2 88
Show 11230+3027 GRV 834 121 82.8 90
Show 11133+3238 SLN 67 44 56.7 91
Show 11118+3218 CVR 115 139 93.9 94
Show Alula Borealis 11185+3306 STF1524 AB 147 7.0 94
Show Alula Borealis 11185+3306 BUP9001 AC 147 156.8 94
Show Alula Borealis 11185+3306 DAM 652 AD 269 281.1 94
Show 11227+3018 NI 25 86 4.5 95
Show 11107+3110 HJ 2562 221 1.0 99
Show 11225+3256 CVR 608 305 8.0 101
Show 11257+3056 UC 2136 71 73.8 104
Show 11100+3114 RAO 652 229 0.9 104
Show 11108+3215 FAR 61 298 0.2 104
Show 11227+3305 CVR1363 73 3.1 110
Show 11111+3027 STT 231 AB 262 34.1 113
Show 11111+3027 STT 231 AD 30 233.9 113
Show 11111+3027 STT 231 AC 321 216.2 113
Show 11111+3027 STT 231 CE 36 139.4 113
Show 11111+3027 STT 231 BC 330 200.9 113
Show 11227+3313 CVR1364 180 3.8 117
Show 11161+3329 GMZ 187 116 4.5 120
Show 11087+3124 FAR 60 105 0.5 122
Show 11243+3306 HDS1621 81 0.2 123
Show 11185+3335 CVR1358 337 3.5 124
Show 11283+3136 JNN 76 146 1.1 130
Show 11283+3144 CRB 89 12 25.3 130
Show 11171+3340 GMZ 188 75 9.0 130
Show 11133+3327 HO 254 163 2.7 131
Show 11139+3331 GMZ 186 195 14.6 132
Show 11280+3216 SLW 602 314 19.7 133
Show 11171+2919 HDS1608 324 3.3 134
Show 11285+3113 SEI 525 145 15.0 134
Show 11184+2913 CBL 336 238 16.5 139
Show 11195+3350 GMZ 192 190 12.2 139
Show 11177+3351 GMZ 189 AB 102 7.3 140
Show 11073+3146 CVR 113 161 15.0 141
Show 11099+3001 CVR1346 229 3.1 141
Show 11289+3206 CVR 614 131 28.1 141
Show 11182+3354 GMZ 191 194 8.8 143
Show 11214+3348 GMZ 193 BC 352 3.7 143

 
 
WDS 11182+3132 : COMPONENTS
 
 
  A B Bb C
B pa=42.4°
sep=0.95"
 
Bb pa=43.1°
sep=0.97"
pa=72.3°
sep=0.02"
 
C pa=334.4°
sep=57.70"
pa=333.6°
sep=57.35"
pa=333.5°
sep=57.36"
 
D pa=140.6°
sep=476.71"
pa=140.8°
sep=476.85"
pa=140.8°
sep=476.84"
pa=142.1°
sep=532.92"
 
 
11182+3132 A
 
 
Common name Alula Australis Meaning first (leap gazelle), South Coord arcsec 2000 111810.90+313145.0 Mag 4.33
Spectral class F9V (yellow-white) PmRA -454.00 PmDE -591.0 HIP 55203
Tycho2 2520-02634-1 HD 98231 HR 4375 GC 15537
BD BD+32 2132 Bayer Xi Ursae Majoris Bayer name Xi UMa Flamsteed 53 Ursae Majoris
Flamsteed name 53 UMa
Tycho2
Tycho2 2520-02634-1 Pflag P RAmdeg 169.54548201 DEmdeg 31.52919433
PmRA -453.7 PmDE -591.4 E RAmdeg 3 E DEmdeg 4
E pmRA 4.4 E pmDE 4.1 EpRAm 1991.75 EpDEm 1991.57
Num 3 Q RAmdeg 0.0 Q DEmdeg 2.0 Q pmRA 0.2
Q pmDE 2.0 BTmag 4.920 E BTmag 0.014 VTmag 4.327
E VTmag 0.009 Prox 10 TYC HIP
CCDM RAdeg 169.54664306 DEdeg 31.53051583 EpRA 1990 1.75
EpDE 1990 1.60 E RAdeg 3.3 E DEdeg 3.5 Posflg D
Corr 0.1
Hipparcos
Catalog H HIP 55203 Proxy RAhms 11 18 11.24
DEdms +31 31 50.8 Vmag 3.79 VarFlag R Vmag G
RAdeg DEdeg AstroRef Plx
CCDM 11182+3132 N CCDM I Nsys 1 Ncomp
MultFlag Source Qual S M HIP
Theta Rho HD 98230 BD BD+32 2132
CD CP Dm number +32 2132 VIred 0.68
SpType G0V R SpType Coord arcsec 2000 111811.24+313150.8
CCDM
Ccdm 11182+3132 RComp Comp A Note1
Note2 @ Discov num DRAs -1.05 DDEs -14.4
R dRAs 10 Year Theta Rho
Obs 2 Vmag 4.4 Sp G0 PmNote *
PmRA -429 PmDE -586 Dm number +32 2132 Cat1 BD
Name2 62484 Cat2 SAO HD 98231 M HD
ADS BDS A 8119 M ADS BDS N IDS IDS 11128N3206A
HIC 55203
 
 
11182+3132 B
 
 
Coord arcsec 2000 111810.95+313145.7 Coord calc 111810.97+313143.0 Mag 4.4 Mag composta 4.8
Spectral class G0V (yellow) PmRA -454.00 PmDE -591.0 SAO 62484
Tycho2 2520-02634-2 HD 98230 HR 4374 Flamsteed 53 Ursae Majoris
Flamsteed name 53 UMa Calc delta mag 0.07
Tycho2
Tycho2 2520-02634-2 Pflag P RAmdeg 169.54548201 DEmdeg 31.52919433
PmRA -453.7 PmDE -591.4 E RAmdeg 3 E DEmdeg 4
E pmRA 4.4 E pmDE 4.1 EpRAm 1991.75 EpDEm 1991.57
Num 3 Q RAmdeg 0.0 Q DEmdeg 2.0 Q pmRA 0.2
Q pmDE 2.0 BTmag 5.530 E BTmag 0.014 VTmag 4.804
E VTmag 0.009 Prox 10 TYC HIP
CCDM RAdeg 169.54684333 DEdeg 31.53072611 EpRA 1990 1.76
EpDE 1990 1.59 E RAdeg 3.4 E DEdeg 3.7 Posflg D
Corr 0.1
SAO
SAO 62484 DelFlag RA1950 PmRA1950 -0.0339
DE1950 PmDE1950 -0.591 Vmag 3.9 SpType G0
Double code Source 70 CatNum 15537 DM BD+32 2132
DMcomp BDsup HD 98230 M HD 9
GC 15537 RA1950rad 2.9475093 DE1950rad 0.5552032 PmRA2000 -0.0338
PmDE2000 -0.586
 
 
11182+3132 Bb
 
 
Coord arcsec 2000 111810.95+313145.7 Calc delta mag 4.33 Calc coord yes
 
 
11182+3132 C
 
 
Coord arcsec 2000 111808.95+313237.1 Mag 15 Calc delta mag 10.67 Calc coord yes
 
 
11182+3132 D
 
 
Coord arcsec 2000 111834.54+312536.5 Mag 18.75 Spectral class T8.5 (brown dwarf) Calc delta mag 14.42
Calc coord yes