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Current system
11158+4227
COU 1904
HD 97857


Nearby doubles
16' : 11166+4215
HJ 2564

33' : 11175+4201
CVR 601

45' : 11174+4146
A 2158

47' : 11154+4316
LDS6241

50' : 11118+4250
ENG 45AB

53' : 11139+4315
KPP 240

62' : 11114+4150
HDS1593

64' : 11121+4139
BVD 217

75' : 11091+4231
HJ 2559AB

76' : 11109+4319
LDS4069

77' : 11114+4325
KUI 55

78' : 11206+4324
A 1846

84' : 11098+4317
CVR 596

86' : 11137+4105
HO 50

86' : 11112+4335
FYM 632

94' : 11079+4155
CBL 329

95' : 11090+4325
COU2099

96' : 11238+4307
LDS4093

97' : 11219+4337
HJ 2568

105' : 11142+4044
SHN 20

105' : 11170+4411
SLW 586

110' : 11076+4329
HJ 2557

111' : 11061+4253
GIC 97AB

115' : 11248+4128
HJ 2570AB

124' : 11080+4100
LDS4062

125' : 11152+4023
CVR1354



Selections
Full WDS
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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.

11158+4227 COU 1904 (HD 97857)

 
 
11h 15m 49.68s +42° 26' 58.1" P.A. 212.00 sep 0.6 mag 8.33,9.46 Sp F8
 
 
Coord 2000 11158+4227 Discov num COU1904 Comp Coord arcsec 2000 11 15 49.68 +42 26 58.1
Date first 1981 Date last 2018 Obs 34
Pa first 197 Pa last 211.6 P.A. Now (θ) 211.6°
Sep first 0.3 Sep last 0.55 Sep. Now (ρ) 0.55"
Mag pri 8.33 Mag sec 9.46 delta mag (ΔM) 1.13 Spectral class F8 (yellow-white)
Pri motion ra -111 Sec motion ra -111
Pri motion dec -004 Sec motion dec -004
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 97857 Constellation Ursa Major SAO 43667 Tycho2 3012-01939-1
Gaia DR2 783699972376844800 HD 97857 GC 15478
 
 
ORBITAL ELEMENTS
 
 
Period (P)228.3y± 27.6 Periastron (T)1972.7y± 1.1 Semi-major axis (a)0.559a± 0.044
Eccentricity (e)0.513± 0.015 Inclination (i)79.1°± 0.3 Longitude of periastron (ω)104°± 6
Node (Ω)20.8°± 0.2 Notes ReferenceBAE2021
Equinox Last observation Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 206.3 0.417
2001 206.7 0.418
2002 207.2 0.418
2003 207.6 0.418
2004 208.1 0.417
2005 208.6 0.417
2006 209.0 0.415
2007 209.5 0.414
2008 209.9 0.412
2009 210.4 0.409
2010 210.9 0.407
2011 211.4 0.404
2012 211.9 0.400
2013 212.4 0.397
2014 212.9 0.393
2015 213.4 0.389
2016 214.0 0.385
2017 214.5 0.381
2018 215.1 0.376
2019 215.6 0.371
2020 216.2 0.366
2021 216.8 0.361
2022 217.5 0.356
2023 218.1 0.350
2024 218.8 0.345
2025 219.4 0.339
2026 220.1 0.334
2027 220.9 0.328
2028 221.6 0.322
2029 222.4 0.316
2030 223.2 0.310


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


 
  


wds11158%2B4227a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 11158+4227 COU 1904 (HD 97857) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
BAE2021 orb j Baidin, A.E. & Krechet, V.G. 2021AstBu..76...84B
BAE2021 Astrophys. Bull. 76, 84, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 COU Couteau, P.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
11158+4227 COU1904 2006 20 211 0.4 8.33 9.46 F8 111549.68+422658.1
11158+4227 COU1904 2010 21 211 0.5 8.33 9.46 F8 111549.68+422658.1
11158+4227 COU1904 2011 30 221 0.4 8.33 9.46 F8 111549.68+422658.1
11158+4227 COU1904 2016 31 214 0.4 8.33 9.46 F8 111549.68+422658.1
11158+4227 COU1904 2018 32 212 0.6 8.33 9.46 F8 111549.68+422658.1

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

 
 
WDS 11158+4227 COU 1904 (HD 97857) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 11158+4227 COU 1904 (HD 97857) : MEASURES
 
 
No records found.

 
 
WDS 11158+4227 (HD 97857) : VIRTUAL EYEPIECE
 
 

11158+4227 COU1904A mag 8.33 Sp F8 11158+4227 COU1904B sep 0.5 P.A. 204.40 mag 9.46 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 11158+4227 (HD 97857) : ALADIN DSS IMAGE @ 11h 15m 49.68s +42° 26' 58.1"
 
 
 
 
WDS 11158+4227 COU 1904 (HD 97857) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

11158+4227 COU1904 distance=0' 11166+4215 HJ 2564 distance=16' 11175+4201 CVR 601 distance=33' 11174+4146 A 2158 distance=45' 11154+4316 LDS6241 distance=47' 11118+4250 ENG 45AB distance=50' 11118+4250 BUP 136BC distance=52' 11139+4315 KPP 240 distance=53' 11114+4150 HDS1593 distance=62' 11121+4139 BVD 217 distance=64' 11091+4231 HJ 2559AB distance=75' 11091+4231 WNO 31AC distance=75' 11091+4231 WNO 31AD distance=75' 11109+4319 LDS4069 distance=76' 11114+4325 KUI 55 distance=77' 11206+4324 A 1846 distance=78' 11098+4317 CVR 596 distance=84' 11137+4105 HO 50 distance=86' 11112+4335 FYM 632 distance=86' 11079+4155 CBL 329 distance=94' 11090+4325 COU2099 distance=95' 11238+4307 LDS4093 distance=96' 11219+4337 HJ 2568 distance=97' 11142+4044 SHN 20 distance=105' 11170+4411 SLW 586 distance=105' 11076+4329 HJ 2557 distance=110' 11061+4253 WNO 25BD distance=111' 11061+4253 GIC 97AB distance=111' 11061+4253 WNO 25AC distance=111' 11061+4253 WNO 25CD distance=112' 11248+4128 HJ 2570AB distance=115' 11248+4128 HJ 2570AC distance=115' 11080+4100 LDS4062 distance=124' 11152+4023 CVR1354 distance=125' 11055+4332 VBS 18AB distance=131' 11055+4332 CSN 7AC distance=131' 11045+4141 FMR 218 distance=134' 11131+4011 HJ 494 distance=140' 11040+4321 FMR 14 distance=142' 11294+4206 COU1905 distance=152' 11299+4232 CVR1368 distance=157' 11227+4011 UC 2127 distance=157' 11180+3951 LDS4081 distance=158' 11172+4510 RAO 260 distance=164' 11277+4410 A 1848 distance=166' 11281+4055 TDS7870 distance=166' 11007+4244 ES 2637 distance=168' 11282+4051 BVD 218 distance=170' 11008+4148 CVR 590 distance=172' 11003+4255 KUI 53AB distance=173' 11003+4255 LEP 38AC distance=173' 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 11158+4227 COU1904 212 0.6
Show 11166+4215 HJ 2564 135 32.0 16
Show 11175+4201 CVR 601 318 28.6 33
Show 11174+4146 A 2158 0.4 45
Show 11154+4316 LDS6241 147 6.8 47
Show 11118+4250 ENG 45 AB 247 135.0 50
Show 11118+4250 BUP 136 BC 344 151.4 52
Show 11139+4315 KPP 240 304 3.7 53
Show 11114+4150 HDS1593 161 0.3 62
Show 11121+4139 BVD 217 294 18.8 64
Show 11091+4231 HJ 2559 AB 267 14.9 75
Show 11091+4231 WNO 31 AC 5 29.6 75
Show 11091+4231 WNO 31 AD 238 45.3 75
Show 11109+4319 LDS4069 228 148.9 76
Show 11114+4325 KUI 55 83 3.4 77
Show 11206+4324 A 1846 165 1.9 78
Show 11098+4317 CVR 596 221 27.8 84
Show 11137+4105 HO 50 35 3.0 86
Show 11112+4335 FYM 632 338 11.6 86
Show 11079+4155 CBL 329 90 60.2 94
Show 11090+4325 COU2099 103 0.3 95
Show 11238+4307 LDS4093 343 60.7 96
Show 11219+4337 HJ 2568 247 24.0 97
Show 11142+4044 SHN 20 99 0.6 105
Show 11170+4411 SLW 586 251 48.0 105
Show 11076+4329 HJ 2557 27 22.7 110
Show 11061+4253 WNO 25 BD 290 33.1 111
Show 11061+4253 GIC 97 AB 18 17.9 111
Show 11061+4253 WNO 25 AC 291 37.9 111
Show 11061+4253 WNO 25 CD 33 17.3 112
Show 11248+4128 HJ 2570 AB 279 17.5 115
Show 11248+4128 HJ 2570 AC 211 46.1 115
Show 11080+4100 LDS4062 199 11.1 124
Show 11152+4023 CVR1354 162 4.5 125
Show 11055+4332 VBS 18 AB 125 32.0 131
Show 11055+4332 CSN 7 AC 168 7.3 131
Show 11045+4141 FMR 218 141 3.8 134
Show 11131+4011 HJ 494 140 31.2 140
Show 11040+4321 FMR 14 124 19.1 142
Show 11294+4206 COU1905 188 0.5 152
Show 11299+4232 CVR1368 39 3.9 157
Show 11227+4011 UC 2127 34 43.8 157
Show 11180+3951 LDS4081 76 328.9 158
Show 11172+4510 RAO 260 277 0.4 164
Show 11277+4410 A 1848 190 0.6 166
Show 11281+4055 TDS7870 151 0.7 166
Show 11007+4244 ES 2637 210 11.6 168
Show 11282+4051 BVD 218 195 7.5 170
Show 11008+4148 CVR 590 50 24.4 172
Show 11003+4255 KUI 53 AB 151 37.2 173
Show 11003+4255 LEP 38 AC 342 968.0 173

 
 
WDS 11158+4227 : COMPONENTS
 
 
  A
B pa=204.4°
sep=0.51"
 
 
11158+4227 A
 
 
Componente originario normalizzato AB Name HD 97857 Coord arcsec 2000 111549.68+422658.1 Mag 8.33
Spectral class F8 (yellow-white) PmRA -111.00 PmDE -4.0 SAO 43667
Tycho2 3012-01939-1 HD 97857 GC 15478 DM BD+43 2096
Tycho2
Tycho2 3012-01939-1 Pflag RAmdeg 168.95700580 DEmdeg 42.44943870
PmRA -111.3 PmDE -3.8 E RAmdeg 6 E DEmdeg 6
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.02 EpDEm 1991.07
Num 10 Q RAmdeg 1.2 Q DEmdeg 1.5 Q pmRA 1.2
Q pmDE 1.4 BTmag 8.668 E BTmag 0.017 VTmag 8.054
E VTmag 0.012 Prox 595 TYC T HIP
CCDM RAdeg 168.95735389 DEdeg 42.44944778 EpRA 1990 1.68
EpDE 1990 1.64 E RAdeg 6.2 E DEdeg 6.0 Posflg
Corr 0.1
SAO
SAO 43667 DelFlag RA1950 PmRA1950 -0.0097
DE1950 PmDE1950 0.002 Vmag 8 SpType F8
Double code Source 70 CatNum 15478 DM BD+43 2096
DMcomp BDsup HD 97857 M HD 0
GC 15478 RA1950rad 2.9368301 DE1950rad 0.74564719 PmRA2000 -0.0095
PmDE2000 0.007
 
 
11158+4227 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 111549.66+422657.6 Mag 9.46 PmRA -111.00
PmDE -4.0 Calc delta mag 1.13 Calc coord yes