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Current system
23270-1515
HU 297
HD 220811


Nearby doubles
12' : 23267-1505
RAO 680

12' : 23261-1514
GWP3297

50' : 23246-1551
GWP3292

62' : 23227-1516
RST4126

62' : 23249-1421
KPP4316

63' : 23243-1425
KPP1380

64' : 23227-1502
HU 295

66' : 23237-1430
HJ 5397

75' : 23318-1448
HDS3351

81' : 23219-1442
RST4124

85' : 23326-1454
SKF 127

86' : 23211-1512
RST4123

87' : 23321-1431
BRT 602

95' : 23232-1632
HU 296

97' : 23292-1646
GWP3307AB

102' : 23257-1655
HJ 3192

103' : 23226-1353
RST4125

104' : 23340-1502
RST4128

106' : 23342-1531
SKF 128

107' : 23343-1509
UC 4988

114' : 23219-1642
HU 293

116' : 23220-1345
GWP3284

120' : 23206-1359
NSN 785

124' : 23353-1448
RST4129

124' : 23351-1551
GWP3325

125' : 23254-1717
HJ 5398



Selections
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Binary Systems
Triple Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

23270-1515 HU 297 (HD 220811)

 
 
23h 26m 57.04s -15° 14' 51.7" P.A. 304.00 sep 0.5 mag 7.24,8.52 Sp A4V dist. 116.69 pc (380.64 l.y.)
 
 
Coord 2000 23270-1515 Discov num HU  297 Comp Coord arcsec 2000 23 26 57.04 -15 14 51.7
Date first 1900 Date last 2018 Obs 15
Pa first 312 Pa last 303.5 P.A. Now (θ) 303.5°
Sep first 0.4 Sep last 0.527 Sep. Now (ρ) 0.527"
Mag pri 7.24 Mag sec 8.52 delta mag (ΔM) 1.28 Spectral class A4V (white)
Pri motion ra +023 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 220811 Constellation Aquarius SAO 165698 HIP 115742
Tycho2 6396-00587-1 Gaia DR2 2407648994148333824 HD 220811 GC 32619
ADS 16758 BD BD-16 6291 Distance 116.69 Distance ly 380.64
 
 
ORBITAL ELEMENTS
 
 
Period (P)92.6y± 2.9 Periastron (T)1983.5y± 1.8 Semi-major axis (a)0.374a± 0.067
Eccentricity (e)0.9 Inclination (i)111.5°± 7.8 Longitude of periastron (ω)48.6°± 11.3
Node (Ω)142.5°± 3.2 Notes ReferenceTok2019c
Equinox Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 310.1 0.439
2001 309.6 0.449
2002 309.2 0.458
2003 308.8 0.466
2004 308.4 0.474
2005 308.0 0.481
2006 307.7 0.488
2007 307.3 0.494
2008 307.0 0.499
2009 306.6 0.504
2010 306.3 0.508
2011 305.9 0.512
2012 305.6 0.515
2013 305.3 0.518
2014 305.0 0.521
2015 304.6 0.523
2016 304.3 0.524
2017 304.0 0.526
2018 303.7 0.526
2019 303.4 0.527
2020 303.1 0.527
2021 302.8 0.527
2022 302.4 0.526
2023 302.1 0.525
2024 301.8 0.524
2025 301.5 0.522
2026 301.2 0.520
2027 300.8 0.517
2028 300.5 0.515
2029 300.2 0.512
2030 299.9 0.508


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


 
  


wds23270-1515a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 23270-1515 HU 297 (HD 220811) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2019c St j Tokovinin, A., Mason, B.D., Mendez, R.A., Horch, E.P. & Briceno, C. 2019AJ....158...48T
Tok2019c +orb AJ 158, 48, 2019
 
 
DISCOVERER
 
 
idgroup discov author
1 HU Hussey, W.F.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
23270-1515 HU 297 1991 14 316 0.3 7.22 8.67 A4V D 232657.04-151451.7
23270-1515 HU 297 2008 15 242 0.3 7.22 8.67 A4V D 232657.04-151451.7
23270-1515 HU 297 2018 15 304 0.5 7.24 8.52 A4V 232657.04-151451.7

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

 
 
WDS 23270-1515 HU 297 (HD 220811) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 23270-1515 HU 297 (HD 220811) : MEASURES
 
 
No records found.

 
 
WDS 23270-1515 (HD 220811) : VIRTUAL EYEPIECE
 
 

23270-1515 HU 297A mag 7.24 Sp A4V 23270-1515 HU 297B sep 0.5 P.A. 304.50 mag 8.52 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 23270-1515 (HD 220811) : ALADIN DSS IMAGE @ 23h 26m 57.04s -15° 14' 51.7"
 
 
 
 
WDS 23270-1515 HU 297 (HD 220811) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

23270-1515 HU 297 distance=0' 23267-1505 RAO 680 distance=12' 23261-1514 GWP3297 distance=12' 23246-1551 GWP3292 distance=50' 23227-1516 RST4126 distance=62' 23249-1421 KPP4316 distance=62' 23243-1425 KPP1380 distance=63' 23227-1502 HU 295 distance=64' 23237-1430 HJ 5397 distance=66' 23318-1448 HDS3351 distance=75' 23219-1442 RST4124 distance=81' 23326-1454 SKF 127 distance=85' 23211-1512 RST4123 distance=86' 23321-1431 BRT 602 distance=87' 23232-1632 HU 296 distance=95' 23292-1646 GWP3307AB distance=97' 23292-1646 GWP3308AC distance=97' 23257-1655 HJ 3192 distance=102' 23226-1353 RST4125 distance=103' 23340-1502 RST4128 distance=104' 23342-1531 SKF 128 distance=106' 23343-1509 UC 4988 distance=107' 23219-1642 HU 293 distance=114' 23220-1345 GWP3284 distance=116' 23206-1359 NSN 785 distance=120' 23328-1651 VOU 28BC distance=124' 23353-1448 RST4129 distance=124' 23351-1551 GWP3325 distance=124' 23254-1717 HJ 5398 distance=125' 23214-1340 HDS3326AB distance=125' 23214-1340 HDS3326Aa,Ab distance=125' 23323-1337 BGH 72 distance=125' 23328-1651 LDS 816A,BC distance=128' 23328-1651 LAF 73AD distance=128' 23328-1651 SHY 110AE distance=128' 23211-1651 LDS5072 distance=129' 23301-1717 HJ 3197 distance=131' 23211-1327 LDS5073 distance=137' 23176-1442 LDS6394 distance=139' 23350-1357 GWP3324 distance=140' 23274-1736 HJ 3194 distance=141' 23251-1735 GWP3293 distance=143' 23346-1647 LDS2990 distance=144' 23180-1621 HU 598 distance=145' 23369-1451 NSN 784 distance=146' 23196-1700 KPP3410 distance=149' 23167-1534 HU 399 distance=151' 23224-1259 HJ 310 distance=152' 23184-1346 GWP3272 distance=153' 23343-1323 GWP3321 distance=156' 23358-1347 HJ 3205 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 23270-1515 HU 297 304 0.5
Show 23267-1505 RAO 680 289 1.2 12
Show 23261-1514 GWP3297 32 15.2 12
Show 23246-1551 GWP3292 225 13.8 50
Show 23227-1516 RST4126 145 2.8 62
Show 23249-1421 KPP4316 255 2.0 62
Show 23243-1425 KPP1380 329 10.4 63
Show 23227-1502 HU 295 42 0.1 64
Show 23237-1430 HJ 5397 345 73.7 66
Show 23318-1448 HDS3351 328 0.9 75
Show 23219-1442 RST4124 350 0.9 81
Show 23326-1454 SKF 127 65 48.5 85
Show 23211-1512 RST4123 128 1.2 86
Show 23321-1431 BRT 602 140 4.6 87
Show 23232-1632 HU 296 189 3.9 95
Show 23292-1646 GWP3307 AB 95 37.4 97
Show 23292-1646 GWP3308 AC 292 101.9 97
Show 23257-1655 HJ 3192 118 33.3 102
Show 23226-1353 RST4125 351 2.3 103
Show 23340-1502 RST4128 215 3.0 104
Show 23342-1531 SKF 128 224 108.0 106
Show 23343-1509 UC 4988 44 61.5 107
Show 23219-1642 HU 293 305 1.0 114
Show 23220-1345 GWP3284 345 11.1 116
Show 23206-1359 NSN 785 59 6.0 120
Show 23328-1651 VOU 28 BC 357 0.7 124
Show 23353-1448 RST4129 34 2.3 124
Show 23351-1551 GWP3325 211 30.2 124
Show 23254-1717 HJ 5398 2 29.3 125
Show 23214-1340 HDS3326 AB 66 0.4 125
Show 23214-1340 HDS3326 Aa,Ab 202 0.0 125
Show 23323-1337 BGH 72 155 120.7 125
Show 23328-1651 LDS 816 A,BC 353 338.2 128
Show 23328-1651 LAF 73 AD 234 9.0 128
Show 23328-1651 SHY 110 AE 190 999.9 128
Show 23211-1651 LDS5072 6.0 129
Show 23301-1717 HJ 3197 307 8.1 131
Show 23211-1327 LDS5073 85 90.2 137
Show 23176-1442 LDS6394 26 6.9 139
Show 23350-1357 GWP3324 174 41.7 140
Show 23274-1736 HJ 3194 65 18.3 141
Show 23251-1735 GWP3293 301 18.3 143
Show 23346-1647 LDS2990 328 13.5 144
Show 23180-1621 HU 598 117 1.7 145
Show 23369-1451 NSN 784 42 2.2 146
Show 23196-1700 KPP3410 227 16.3 149
Show 23167-1534 HU 399 158 0.1 151
Show 23224-1259 HJ 310 339 10.1 152
Show 23184-1346 GWP3272 74 84.8 153
Show 23343-1323 GWP3321 253 25.9 156
Show 23358-1347 HJ 3205 64 21.3 156

 
 
WDS 23270-1515 : COMPONENTS
 
 
  A
B pa=304.5°
sep=0.51"
 
 
23270-1515 A
 
 
Componente originario normalizzato AB Name HD 220811 Coord arcsec 2000 232657.04-151451.7 Mag 7.24
Spectral class A4V (white) PmRA 23.00 PmDE -7.0 SAO 165698
HIP 115742 Tycho2 6396-00587-1 HD 220811 GC 32619
BD BD-16 6291
Tycho2
Tycho2 6396-00587-1 Pflag RAmdeg 351.73772724 DEmdeg -15.24770532
PmRA 23.7 PmDE -7.8 E RAmdeg 5 E DEmdeg 5
E pmRA 1.2 E pmDE 1.2 EpRAm 1991.38 EpDEm 1991.24
Num 11 Q RAmdeg 1.8 Q DEmdeg 0.8 Q pmRA 1.8
Q pmDE 0.8 BTmag 7.155 E BTmag 0.016 VTmag 6.945
E VTmag 0.011 Prox 999 TYC T HIP 115742
CCDM AB RAdeg 351.73767111 DEdeg -15.24768722 EpRA 1990 1.82
EpDE 1990 1.67 E RAdeg 4.6 E DEdeg 5.4 Posflg P
Corr -0.2
SAO
SAO 165698 DelFlag RA1950 PmRA1950 -0.0011
DE1950 PmDE1950 -0.005 Vmag 6.9 SpType A3
Double code Source 70 CatNum 32619 DM BD-16 6291
DMcomp BDsup HD 220811 M HD 0
GC 32619 RA1950rad 6.12758256 DE1950rad -0.27092651 PmRA2000 -0.0009
PmDE2000 -0.009
Hipparcos
Catalog H HIP 115742 Proxy H RAhms 23 26 57.04
DEdms -15 14 51.7 Vmag 6.91 VarFlag R Vmag H
RAdeg 351.738 DEdeg -15.2477 AstroRef A Plx 8.46
CCDM 23269-1515 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 316 Rho 0.308 HD 220811 BD BD-16 6291
CD CP Dm number -16 6291 VIred 0.19
SpType A3III R SpType Coord arcsec 2000 232657.04-151451.7
Hipparcos 2
HIP 115742 Sn 15 So 3 Nc 2
RArad 6.1389806202 DErad -0.2661225269 Plx 8.57 PmRA 29.05
PmDE -10.54 E RArad 0.71 E DErad 0.47 E Plx 0.86
E pmRA 1.05 E pmDE 0.72 Hpmag 6.9699 E Hpmag 0.0011
SHp 0.007 VA 0 BV 0.201 E BV 0.011
VI 0.22
 
 
23270-1515 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 232657.01-151451.4 Mag 8.52 Calc delta mag 1.28
Calc coord yes