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Doubles in session


Current system
21378-0751
MCA 68 AB
Bunda


Nearby doubles
6' : 21376-0746
HJ 1663AB

8' : 21376-0744
HJ 1662

30' : 21391-0729
LDS 752

35' : 21396-0813
HDS3081

37' : 21389-0823
A 297

51' : 21369-0841
JNN 132

51' : 21344-0745
YSC 72

54' : 21347-0724
A 296

55' : 21414-0744
OCC1102

56' : 21412-0729
OSO 152

60' : 21399-0842
RST4091

65' : 21417-0816
HJ 5519

66' : 21357-0850
CVR1707

69' : 21332-0744
UC 4497

72' : 21426-0745
OCC1103

79' : 21396-0905
OCC 347

91' : 21400-0915
OCC 348

96' : 21370-0617
RST4696

101' : 21310-0740
GWP3069

102' : 21357-0616
J 2353

108' : 21315-0845
HDS3060

115' : 21300-0746
GRV1142

116' : 21454-0729
NSN 72

117' : 21375-0555
JNN 133

118' : 21315-0902
TDT3008

118' : 21373-0554
UC 4512



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.

21378-0751 MCA 68 AB (Bunda)

 
 
21h 37m 45.10s -07° 51' 15.1" P.A. 79.00 sep 0.0 mag 4.80,7.00 Sp A7V dist. 54.76 pc (178.63 l.y.)
 
 
Coord 2000 21378-0751 Discov num MCA  68 Comp AB Coord arcsec 2000 21 37 45.10 -07 51 15.1
Date first 1977 Date last 2008 Obs 5
Pa first 123 Pa last 78.5 P.A. Now (θ) 78.5°
Sep first 0.0 Sep last 0.043 Sep. Now (ρ) 0.043"
Mag pri 4.80 Mag sec 7.00 delta mag (ΔM) 2.2 Spectral class A7V (white)
Pri motion ra +114 Sec motion ra
Pri motion dec -025 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
21378-0751 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Bunda 145537 21 37 45 -07 51 15 MCA 68 AB 2008 5 79 0.0 4.80 7.00 2.20 Y <===
Show Xi Aqr 145537 21 37 45 -07 51 15 DRS 67 AC 2014 3 222 375.5 4.70 14.00 9.30
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Bunda Constellation Aquarius SAO 145537 HIP 106786
Tycho2 5787-01291-1 Gaia DR2 2667335258168556928 HD 205767 HR 8264
GC 30268 BD BD-08 5701 Bayer Xi Aquarii Bayer name Xi Aqr
Flamsteed 23 Aquarii Flamsteed name 23 Aqr FK5 1569 Distance 54.76
Distance ly 178.63 Bayer greek ξ Aqr
Meaning French proposal; named after Belenus, a god of light, the Sun and of health in Gaulish mythology.
 
 
ORBITAL ELEMENTS
 
 
Period (P)25.5y± 3 Periastron (T)1970.4y± 2.5 Semi-major axis (a)0.28a± 0.03
Eccentricity (e)0.6± 0.2 Inclination (i)95°± 12 Longitude of periastron (ω)270°± 36
Node (Ω)300°± 17 Notesn ReferenceGon2002b
Equinox Last observation Grade9(1=Definitive, 9=Indet.)
label theta rho
2000 296.0 0.224
2001 294.4 0.217
2002 292.7 0.202
2003 290.6 0.180
2004 287.8 0.155
2005 283.9 0.127
2006 277.6 0.097
2007 265.9 0.068
2008 239.9 0.045
2009 192.8 0.041
2010 159.7 0.060
2011 145.1 0.088
2012 137.7 0.118
2013 133.2 0.146
2014 130.2 0.173
2015 127.9 0.196
2016 126.1 0.213
2017 124.4 0.223
2018 122.9 0.222
2019 121.2 0.203
2020 118.8 0.154
2021 110.5 0.055
2022 306.0 0.079
2023 300.6 0.167
2024 298.4 0.209
2025 296.8 0.224
2026 295.2 0.222
2027 293.6 0.210
2028 291.7 0.191
2029 289.3 0.168
2030 286.0 0.141


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


 
  


wds21378-0751r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21378-0751 MCA 68 AB (Bunda) : NOTES
 
 
discov_num notes refcode
MCA 68 xi Aqr = 23 Aqr. A long-period spectroscopic binary now resolved by
speckle interferometry. Also an occultation pair.
This object was misidentified as HR 8265 McA1978c
xi Aqr Gontcharov & Kiyaeva (2002) photocentric (astrometric) orbit is based Gon2002a
on a combination of ground-based catalogs with Hipparcos.
 
 
REFERENCES
 
 
refcode metd author reference
Gon2002a orb - Gontcharov, G.A. & Kiyaeva, O.V. 2002SvAL...28..261G
Gon2002a SvAL 28, 261, 2002
Gon2002b orb - Gontcharov, G.A. & Kiyaeva, O.V. 2002A&A...391..647G
Gon2002b A&A 391, 647, 2002
McA1978c Sc j McAlister, H.A. 1978PASP...90..288M
McA1978c PASP 90, 288, 1978
 
 
DISCOVERER
 
 
idgroup discov author
1 DRS De Rosa, R.J., Bulger, J., Patience, J., Leland, B., Macintosh, B., Schnieder, A.,
1 DRS Song, I., Marois, C. et al.
2 DRS De Rosa, R.J., Patience, J., Vigan, A., Wilson, P.A., Schnieder, A.,
2 DRS McConnell, N.J., Wiktorowicz, S.J., Marois, C., Song, I., Macintosh, B.,
2 DRS Graham, J.R., Bessell, M.S., Doyon, R., & Lai, O.
3 DRS De Rosa, R.J., Patience, J., Wilson, P. A., Schneider, A., Wiktorowicz, S. J.,
3 DRS Vigan, A., Marois, C., Song, I., Macintosh, B., Graham, J. R., et al.
6 DRS De Rosa, R.J., Patience, J., Ward-Duong, K., Vigan, A., Marois, C., Song, I.,
6 DRS Macintosh, B., Graham, J.R., Doyon, R., Bessell, M.S., et al.
7 DRS De Rosa, R.J., Nielsen, E.L., Rameau, J., Duchene, G., Greenbaum, A.Z., Wang, J.J.,
7 DRS Ammons, S.M., Bailey, V.P., Barman, T., Bulger, J., Chilcote, J., Cotten, T.,
7 DRS Doyon, R., Esposito, T.M., Fitzgerald, M.P., Follette, K.B., Gerard, B.L.,
7 DRS Goodsell, S.J., Graham, J.R., Hibon, P., Horn, J., Hung, L.-W., Ingraham, P.,
7 DRS Kalas, P., Konopacky, Q., Larkin, J.E., Macintosh, B., Maire, J., Marchis, F.,
7 DRS Marley, M.S., Marois, C., Metchev, S., Millar-Blanchaer, M.A., Oppenheimer, R.,
7 DRS Palmer, D., Patience, J., Perrin, M., Poyneer, L., Pueyo, L., Rajan, A., Rantakyro,
7 DRS F.T., Ren, B., Ruffio, J.-B., Savransky, D., Schneider, A.C., Sivaramakrishnan, A.,
7 DRS Song, I., Soummer, R., Tallis, M., Thomas, S., Wallace, J.K., Ward-Duong, K.,
7 DRS Wiktorowicz, S. & Wolff, S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21378-0751 MCA 68 AB 2008 5 79 0.0 4.80 7.00 A7V NO 213745.04-075114.9

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

 
 
WDS 21378-0751 MCA 68 AB (Bunda) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21378-0751 MCA 68 AB (Bunda) : MEASURES
 
 
No records found.

 
 
WDS 21378-0751 (Bunda) : VIRTUAL EYEPIECE
 
 

21378-0751 MCA 68A mag 4.8 Sp A7V 21378-0751 MCA 68B mag 7 21378-0751 DRS 67C sep 373.9 P.A. 221.40 mag 14 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 21378-0751 (Bunda) : ALADIN DSS IMAGE @ 21h 37m 45.10s -07° 51' 15.1"
 
 
 
 
WDS 21378-0751 MCA 68 AB (Bunda) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21378-0751 MCA 68AB (Bunda) distance=0' 21376-0746 HJ 1663AB distance=6' 21376-0746 HJ 1663AC distance=6' 21376-0744 HJ 1662 distance=8' 21391-0729 LDS 752 distance=30' 21396-0813 HDS3081 distance=35' 21389-0823 A 297 distance=37' 21369-0841 JNN 132 distance=51' 21344-0745 YSC 72 distance=51' 21347-0724 A 296 distance=54' 21414-0744 OCC1102 distance=55' 21412-0729 OSO 152 distance=56' 21399-0842 RST4091 distance=60' 21417-0816 HJ 5519 distance=65' 21357-0850 CVR1707 distance=66' 21332-0744 UC 4497 distance=69' 21426-0745 OCC1103 distance=72' 21396-0905 OCC 347 distance=79' 21400-0915 OCC 348 distance=91' 21370-0617 RST4696 distance=96' 21310-0740 GWP3069 distance=101' 21357-0616 J 2353 distance=102' 21315-0845 HDS3060 distance=108' 21300-0746 GRV1142 distance=115' 21454-0729 NSN 72 distance=116' 21375-0555 JNN 133 distance=117' 21315-0902 TDT3008 distance=118' 21373-0554 UC 4512 distance=118' 21305-0707 LDS6355 distance=118' 21431-0919 OCC9198 distance=119' 21335-0610 LDS4895 distance=120' 21297-0752 RST4087 distance=120' 21445-0645 UC 4543 distance=121' 21402-0556 GWP3083 distance=121' 21402-0948 OCC1063 distance=122' 21449-0902 OCC 470 distance=128' 21412-0550 UC 4526 distance=133' 21421-0554 A 298 distance=134' 21434-0605 SCA 90 distance=137' 21300-0637 BRT 517 distance=137' 21452-0616 A 3110AB distance=139' 21452-0616 HDO 167AC distance=139' 21452-0616 HDO 167AD distance=139' 21463-0846 RST4698 distance=139' 21392-0532 GWP3081 distance=142' 21449-0926 LDS4906 distance=144' 21307-0936 GWP3068 distance=148' 21435-0953 OCC 948 distance=149' 21412-1011 RAO 623 distance=149' 21313-0947 BLA 9 distance=151' 21283-0655 GWP3063 distance=152' 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 Bunda 21378-0751 MCA 68 AB 79 0.0
Show Bunda 21378-0751 DRS 67 AC 222 375.5
Show 21376-0746 HJ 1663 AB 66 17.2 6
Show 21376-0746 HJ 1663 AC 102 33.2 6
Show 21376-0744 HJ 1662 129 21.9 8
Show 21391-0729 LDS 752 204 5.8 30
Show 21396-0813 HDS3081 329 0.2 35
Show 21389-0823 A 297 82 3.1 37
Show 21369-0841 JNN 132 109 0.2 51
Show 21344-0745 YSC 72 147 0.2 51
Show 21347-0724 A 296 57 3.0 54
Show 21414-0744 OCC1102 -1 0.0 55
Show 21412-0729 OSO 152 111 14.2 56
Show 21399-0842 RST4091 122 2.3 60
Show 21417-0816 HJ 5519 55 19.0 65
Show 21357-0850 CVR1707 261 5.0 66
Show 21332-0744 UC 4497 149 40.5 69
Show 21426-0745 OCC1103 -1 0.0 72
Show 21396-0905 OCC 347 -1 0.0 79
Show 21400-0915 OCC 348 -1 0.1 91
Show 21370-0617 RST4696 45 2.2 96
Show 21310-0740 GWP3069 265 31.4 101
Show 21357-0616 J 2353 73 3.6 102
Show 21315-0845 HDS3060 224 0.4 108
Show 21300-0746 GRV1142 225 36.4 115
Show 21454-0729 NSN 72 356 5.9 116
Show 21375-0555 JNN 133 343 0.2 117
Show 21315-0902 TDT3008 72 0.5 118
Show 21373-0554 UC 4512 303 13.8 118
Show 21305-0707 LDS6355 93 2.1 118
Show 21431-0919 OCC9198 -1 0.1 119
Show 21335-0610 LDS4895 206 14.7 120
Show 21297-0752 RST4087 16 1.4 120
Show 21445-0645 UC 4543 231 142.6 121
Show 21402-0556 GWP3083 344 28.4 121
Show 21402-0948 OCC1063 -1 0.0 122
Show 21449-0902 OCC 470 -1 0.1 128
Show 21412-0550 UC 4526 333 49.7 133
Show 21421-0554 A 298 140 2.7 134
Show 21434-0605 SCA 90 261 41.3 137
Show 21300-0637 BRT 517 205 4.4 137
Show 21452-0616 A 3110 AB 310 6.6 139
Show 21452-0616 HDO 167 AC 37 12.0 139
Show 21452-0616 HDO 167 AD 112 27.8 139
Show 21463-0846 RST4698 327 1.4 139
Show 21392-0532 GWP3081 359 48.6 142
Show 21449-0926 LDS4906 163 3.8 144
Show 21307-0936 GWP3068 249 9.5 148
Show 21435-0953 OCC 948 -1 0.1 149
Show 21412-1011 RAO 623 14 1.0 149
Show 21313-0947 BLA 9 181 0.1 151

 
 
WDS 21378-0751 : COMPONENTS
 
 
  A B
B pa=78.4°
sep=0.04"
 
C pa=221.4°
sep=373.89"
pa=221.4°
sep=373.92"
 
 
21378-0751 A
 
 
Common name Bunda Meaning French proposal; named after Belenus, a god of light, the Sun and of health in Gaulish mythology. Coord arcsec 2000 213745.10-075115.1 Mag 4.8
Spectral class A7V (white) PmRA 114.00 PmDE -25.0 SAO 145537
HIP 106786 Tycho2 5787-01291-1 HD 205767 HR 8264
GC 30268 BD BD-08 5701 Bayer Xi Aquarii Bayer name Xi Aqr
Flamsteed 23 Aquarii Flamsteed name 23 Aqr FK5 1569
Tycho2
Tycho2 5787-01291-1 Pflag RAmdeg 324.43795747 DEmdeg -7.85420249
PmRA 115.5 PmDE -24.3 E RAmdeg 4 E DEmdeg 4
E pmRA 0.3 E pmDE 0.3 EpRAm 1989.90 EpDEm 1989.69
Num 32 Q RAmdeg 1.0 Q DEmdeg 1.0 Q pmRA 1.3
Q pmDE 1.3 BTmag 4.888 E BTmag 0.014 VTmag 4.700
E VTmag 0.009 Prox 999 TYC T HIP 106786
CCDM RAdeg 324.43769222 DEdeg -7.85414556 EpRA 1990 1.81
EpDE 1990 1.59 E RAdeg 3.5 E DEdeg 3.9 Posflg
Corr 0.0
SAO
SAO 145537 DelFlag RA1950 PmRA1950 0.0076
DE1950 PmDE1950 -0.023 Vmag 4.8 SpType A5
Double code Source 74 CatNum 1569 DM BD-08 5701
DMcomp BDsup HD 205767 M HD 0
GC 30268 RA1950rad 5.65090042 DE1950rad -0.14101256 PmRA2000 0.0078
PmDE2000 -0.025
Hipparcos
Catalog H HIP 106786 Proxy RAhms 21 37 45.04
DEdms -07 51 14.9 Vmag 4.68 VarFlag R Vmag G
RAdeg 324.438 DEdeg -7.85414 AstroRef Plx 18.26
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 205767 BD BD-08 5701
CD CP Dm number -08 5701 VIred 0.19
SpType A7V R SpType Coord arcsec 2000 213745.04-075114.9
Hipparcos 2
HIP 106786 Sn 5 So 0 Nc 1
RArad 5.6625056506 DErad -0.1370806364 Plx 18.26 PmRA 114.2
PmDE -25.03 E RArad 0.21 E DErad 0.15 E Plx 0.24
E pmRA 0.25 E pmDE 0.17 Hpmag 4.7431 E Hpmag 0.0013
SHp 0.008 VA 0 BV 0.175 E BV 0.006
VI 0.19
CCDM
Ccdm 21378-0751 RComp Comp A Note1
Note2 Discov num DRAs -2.89 DDEs -15.2
R dRAs 81 Year Theta Rho
Obs 2 Vmag 4.7 Sp A7 PmNote @
PmRA 116 PmDE -25 Dm number -08 5701 Cat1 BD
Name2 145537 Cat2 SAO HD 205767 M HD
ADS BDS M ADS BDS N N IDS IDS 21324S0818A
HIC 106786
 
 
21378-0751 B
 
 
Coord arcsec 2000 213745.10-075115.1 Mag 7 Calc delta mag 2.2 Calc coord yes
CCDM
Ccdm 21378-0751 RComp Comp B Note1
Note2 Discov num MAL 68 DRAs DDEs
R dRAs Year 1977 Theta 123 Rho 0.0
Obs 1 Vmag Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 21324S0818B
HIC 106786
 
 
21378-0751 C
 
 
Coord arcsec 2000 213728.45-075555.4 Mag 14 PmRA 115.00 PmDE -26.0
Calc delta mag 9.2 Calc coord yes