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Doubles in session


Current system
21074-0814
BU 368 AB
HD 201038


Nearby doubles
5' : 21074-0810
HDS3010

13' : 21078-0826
RST4074

26' : 21065-0753
TDT2752

27' : 21092-0814
JNN 128

43' : 21071-0858
J 1782

43' : 21054-0744
RST4691

49' : 21042-0811
TDT2725

50' : 21079-0725
KPP2183

53' : 21103-0845
UC 4397

54' : 21106-0837
HJ 930

61' : 21115-0832
J 2340

63' : 21082-0916
UC 4387

68' : 21119-0757
TDT2815

75' : 21042-0911
AOT 102

84' : 21069-0937
TDT2762

87' : 21100-0658
GRV1140

93' : 21096-0940
RST4075

95' : 21136-0749
SLW1232

99' : 21008-0821
BU 678AB

102' : 21075-0956
TDT2770

103' : 21032-0935
AOT 99

104' : 21135-0905
BRT 515

106' : 21100-0642
GRV1141

112' : 21146-0849
TDT2851

113' : 21077-0621
BRT 513

115' : 21023-0941
HJ 929



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.

21074-0814 BU 368 AB (HD 201038)

 
 
21h 07m 26.28s -08° 14' 05.6" P.A. 312.00 sep 0.0 mag 7.56,8.24 Sp A0 dist. 117.65 pc (383.77 l.y.)
 
 
Coord 2000 21074-0814 Discov num BU  368 Comp AB Coord arcsec 2000 21 07 26.28 -08 14 05.6
Date first 1875 Date last 2021 Obs 78
Pa first 100 Pa last 311.8 P.A. Now (θ) 318.2°
Sep first 0.5 Sep last 0.05 Sep. Now (ρ) 0.039"
Mag pri 7.56 Mag sec 8.24 delta mag (ΔM) 0.68 Spectral class A0 (white)
Pri motion ra -019 Sec motion ra
Pri motion dec -007 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
21074-0814 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 201038 145118 21 07 26 -08 14 06 BU 368 AB 2021 78 312 0.0 7.56 8.24 0.68 Y <===
Show 145118 21 07 26 -08 14 06 BU 368 AC 2004 5 39 15.6 7.56 14.10 6.54
Show 145118 21 07 26 -08 14 06 POP 227 AB,E 2004 3 117 51.3 7.56 14.92 7.36
Show 21 07 27 -08 13 53 BU 368 CD 2015 9 298 6.0 14.10 14.80 0.70
Quintuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 201038 Constellation Aquarius SAO 145118 HIP 104272
Tycho2 5771-01610-1 Gaia DR2 6897081208037262592 HD 201038 GC 29515
ADS 14648 BD BD-08 5581 Distance 117.65 Distance ly 383.77
 
 
ORBITAL ELEMENTS
 
 
Period (P)345.28y± 15.75 Periastron (T)1954.64y± 1.11 Semi-major axis (a)0.576a± 0.013
Eccentricity (e)0.665± 0.02 Inclination (i)87.6°± 0.6 Longitude of periastron (ω)304.2°± 1.9
Node (Ω)270.1°± 0.5 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 277.6 0.167
2001 278.0 0.162
2002 278.4 0.156
2003 278.8 0.151
2004 279.3 0.145
2005 279.9 0.139
2006 280.5 0.133
2007 281.1 0.127
2008 281.8 0.122
2009 282.6 0.116
2010 283.4 0.110
2011 284.4 0.104
2012 285.4 0.098
2013 286.6 0.092
2014 288.0 0.087
2015 289.5 0.081
2016 291.3 0.075
2017 293.4 0.069
2018 295.8 0.064
2019 298.7 0.058
2020 302.2 0.053
2021 306.5 0.048
2022 311.7 0.043
2023 318.2 0.039
2024 326.1 0.035
2025 335.7 0.032
2026 346.7 0.030
2027 358.7 0.030
2028 10.6 0.031
2029 21.5 0.033
2030 30.9 0.036


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


 
  


wds21074-0814d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21074-0814 BU 368 AB (HD 201038) : NOTES
 
 
discov_num notes refcode
BU 368 Baize (1985) value of omega corrected from 12.0 to 192.0 degrees by Baz1985b
Ruymaekers & Nys (1985). Ruy1995
AB: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 3.23 +/- 1.27, 3.31, and 2.24 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
Baz1985b orb - Baize, P. 1985A&AS...60..333B
Baz1985b A&AS 60, 333, 1985
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Ruy1995 orb - Ruymaekers, G. & Nys, O. 1995IAUDS.126....1R
Ruy1995 Inf. Circ. 126, 1, 1995
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
 
 
DISCOVERER
 
 
idgroup discov author
1 BU Burnham, S.W. (BU 1 - 81)
179 POP Popovic, G.M.
308 POP Popovic, G.M. (Cvetkovic, Z., Pavlovic, R., Strigachev, A., Novakovic, B., &
308 POP Popovic, G.M.)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21074-0814 BU 368 AB 2001 69 288 0.2 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2008 72 283 0.1 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2009 75 287 0.1 7.56 8.24 A0 NOD 210726.28-081405.6
21074-0814 BU 368 AB 2013 76 290 0.1 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2014 75 289 0.1 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2017 76 297 0.1 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2018 77 300 0.1 7.56 8.24 A0 NO 210726.28-081405.6
21074-0814 BU 368 AB 2021 78 312 0.0 7.56 8.24 A0 NO 210726.28-081405.6

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

 
 
WDS 21074-0814 BU 368 AB (HD 201038) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21074-0814 BU 368 AB (HD 201038) : MEASURES
 
 
No records found.

 
 
WDS 21074-0814 (HD 201038) : VIRTUAL EYEPIECE
 
 

21074-0814 BU 368A mag 7.56 Sp A0 21074-0814 BU 368B mag 8.24 21074-0814 BU 368C sep 15.4 P.A. 37.50 mag 14.1 21074-0814 BU 368D sep 15.6 P.A. 15.30 mag 14.8 21074-0814 POP 227E sep 50.8 P.A. 117.10 mag 14.92 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 21074-0814 (HD 201038) : ALADIN DSS IMAGE @ 21h 07m 26.28s -08° 14' 05.6"
 
 
 
 
WDS 21074-0814 BU 368 AB (HD 201038) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21074-0814 BU 368AB distance=0' 21074-0814 BU 368CD distance=1' 21074-0810 HDS3010 distance=5' 21078-0826 RST4074 distance=13' 21065-0753 TDT2752 distance=26' 21092-0814 JNN 128 distance=27' 21071-0858 J 1782 distance=43' 21054-0744 RST4691 distance=43' 21042-0811 TDT2725 distance=49' 21079-0725 KPP2183 distance=50' 21103-0845 UC 4397 distance=53' 21106-0837 HJ 930 distance=54' 21115-0832 J 2340 distance=61' 21082-0916 UC 4387 distance=63' 21119-0757 TDT2815 distance=68' 21042-0911 AOT 102 distance=75' 21069-0937 TDT2762 distance=84' 21100-0658 GRV1140 distance=87' 21096-0940 RST4075 distance=93' 21136-0749 SLW1232 distance=95' 21008-0821 BU 678AB distance=99' 21008-0821 FOX 255AC distance=99' 21075-0956 TDT2770 distance=102' 21032-0935 AOT 99 distance=103' 21135-0905 BRT 515 distance=104' 21100-0642 GRV1141 distance=106' 21146-0849 TDT2851 distance=112' 21077-0621 BRT 513 distance=113' 21023-0941 HJ 929 distance=115' 21052-1004 AOT 104 distance=116' 21029-0950 AOT 98 distance=117' 21121-0638 TDT2821 distance=118' 20595-0804 RST3275 distance=119' 21151-0742 GRV1153 distance=119' 21079-1013 BU 473AB distance=119' 21079-1013 BU 473AC distance=119' 21008-0704 UC 4361 distance=121' 20593-0812 AHD 31 distance=122' 21034-1000 AOT 100 distance=122' 21011-0657 WAA 49 distance=123' 21027-0629 UC 4364 distance=127' 21050-1020 AOT 103 distance=131' 21036-1012 AOT 101 distance=131' 21157-0901 ZIE 13 distance=132' 21085-1028 LDS1478 distance=135' 21027-1012 AOT 97 distance=138' 20599-0653 UC 4355 distance=139' 21005-0642 CVR 881 distance=139' 21032-0610 RST4689 distance=140' 21167-0739 STF2781AB distance=143' 20588-0921 BOO 1DF distance=143' 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 21074-0814 BU 368 AB 312 0.0
Show 21074-0814 BU 368 AC 39 15.6
Show 21074-0814 POP 227 AB,E 117 51.3
Show 21074-0814 BU 368 CD 298 6.0 1
Show 21074-0810 HDS3010 31 0.9 5
Show 21078-0826 RST4074 28 1.8 13
Show 21065-0753 TDT2752 79 0.5 26
Show 21092-0814 JNN 128 121 0.9 27
Show 21071-0858 J 1782 193 5.1 43
Show 21054-0744 RST4691 71 0.5 43
Show 21042-0811 TDT2725 74 0.4 49
Show 21079-0725 KPP2183 190 17.9 50
Show 21103-0845 UC 4397 270 43.4 53
Show 21106-0837 HJ 930 114 10.3 54
Show 21115-0832 J 2340 323 6.7 61
Show 21082-0916 UC 4387 14 16.0 63
Show 21119-0757 TDT2815 236 0.5 68
Show 21042-0911 AOT 102 113 14.6 75
Show 21069-0937 TDT2762 94 0.8 84
Show 21100-0658 GRV1140 287 37.0 87
Show 21096-0940 RST4075 40 1.6 93
Show 21136-0749 SLW1232 187 60.4 95
Show 21008-0821 BU 678 AB 260 2.8 99
Show 21008-0821 FOX 255 AC 251 71.0 99
Show 21075-0956 TDT2770 215 0.6 102
Show 21032-0935 AOT 99 116 7.4 103
Show 21135-0905 BRT 515 67 4.1 104
Show 21100-0642 GRV1141 84 16.9 106
Show 21146-0849 TDT2851 71 0.5 112
Show 21077-0621 BRT 513 258 6.6 113
Show 21023-0941 HJ 929 2 23.9 115
Show 21052-1004 AOT 104 174 7.6 116
Show 21029-0950 AOT 98 276 15.7 117
Show 21121-0638 TDT2821 220 0.6 118
Show 20595-0804 RST3275 5 1.9 119
Show 21151-0742 GRV1153 181 17.0 119
Show 21079-1013 BU 473 AB 117 2.1 119
Show 21079-1013 BU 473 AC 16 39.0 119
Show 21008-0704 UC 4361 52 39.2 121
Show 20593-0812 AHD 31 161 10.6 122
Show 21034-1000 AOT 100 146 21.2 122
Show 21011-0657 WAA 49 171 6.1 123
Show 21027-0629 UC 4364 165 27.0 127
Show 21050-1020 AOT 103 224 21.6 131
Show 21036-1012 AOT 101 139 14.6 131
Show 21157-0901 ZIE 13 19 8.2 132
Show 21085-1028 LDS1478 200 5.2 135
Show 21027-1012 AOT 97 4 13.1 138
Show 20599-0653 UC 4355 21 32.1 139
Show 21005-0642 CVR 881 127 11.1 139
Show 21032-0610 RST4689 84 0.8 140

 
 
WDS 21074-0814 : COMPONENTS
 
 
  A B C D
B pa=312.1°
sep=0.05"
 
C pa=37.5°
sep=15.37"
pa=37.7°
sep=15.37"
 
D pa=15.3°
sep=15.58"
pa=15.5°
sep=15.55"
pa=298.3°
sep=5.94"
 
E pa=117.1°
sep=50.84"
pa=117.2°
sep=50.89"
pa=134.6°
sep=50.40"
pa=132.9°
sep=56.13"
 
 
21074-0814 A
 
 
Name HD 201038 Coord arcsec 2000 210726.28-081405.6 Mag 7.56 Spectral class A0 (white)
PmRA -19.00 PmDE -7.0 SAO 145118 HIP 104272
Tycho2 5771-01610-1 HD 201038 GC 29515 BD BD-08 5581
Tycho2
Tycho2 5771-01610-1 Pflag RAmdeg 316.85946768 DEmdeg -8.23489701
PmRA -18.6 PmDE -8.7 E RAmdeg 4 E DEmdeg 5
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.23 EpDEm 1990.93
Num 17 Q RAmdeg 1.5 Q DEmdeg 1.6 Q pmRA 1.4
Q pmDE 1.6 BTmag 7.305 E BTmag 0.015 VTmag 7.051
E VTmag 0.010 Prox 999 TYC T HIP 104272
CCDM AB RAdeg 316.85951028 DEdeg -8.23487694 EpRA 1990 1.75
EpDE 1990 1.65 E RAdeg 3.8 E DEdeg 4.5 Posflg P
Corr -0.3
SAO
SAO 145118 DelFlag RA1950 PmRA1950 -0.0013
DE1950 PmDE1950 -0.015 Vmag 6.9 SpType A0
Double code Source 70 CatNum 29515 DM BD-08 5581
DMcomp BDsup HD 201038 M HD 0
GC 29515 RA1950rad 5.51857363 DE1950rad -0.1472532 PmRA2000 -0.0011
PmDE2000 -0.017
Hipparcos
Catalog H HIP 104272 Proxy H RAhms 21 07 26.28
DEdms -08 14 05.6 Vmag 7.02 VarFlag R Vmag H
RAdeg 316.86 DEdeg -8.23488 AstroRef * Plx 7.5
CCDM 21074-0814 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 273 Rho 0.212 HD 201038 BD BD-08 5581
CD CP Dm number -08 5581 VIred 0.25
SpType A0 R SpType Coord arcsec 2000 210726.28-081405.6
Hipparcos 2
HIP 104272 Sn 55 So 3 Nc 2
RArad 5.5302417798 DErad -0.1437257028 Plx 8.5 PmRA -20.7
PmDE -9.63 E RArad 0.7 E DErad 0.36 E Plx 0.81
E pmRA 0.93 E pmDE 0.35 Hpmag 7.0909 E Hpmag 0.0009
SHp 0.008 VA 0 BV 0.226 E BV 0.002
VI 0.25
CCDM
Ccdm 21074-0814 RComp Comp A Note1
Note2 Discov num DRAs 2.31 DDEs -6.7
R dRAs 10 Year Theta Rho
Obs 4 Vmag 7.5 Sp A0 PmNote *
PmRA -17 PmDE -15 Dm number -08 5581 Cat1 BD
Name2 145118 Cat2 SAO HD 201038 M HD
ADS BDS A14648 M ADS BDS N IDS IDS 21021S0838A
HIC 104272
 
 
21074-0814 B
 
 
Coord arcsec 2000 210726.28-081405.6 Mag 8.24 Calc delta mag 0.68 Calc coord yes
CCDM
Ccdm 21074-0814 RComp Comp B Note1 *
Note2 Discov num BU 368 DRAs DDEs
R dRAs Year 1959 Theta 106 Rho 0.1
Obs 24 Vmag 7.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14648 M ADS BDS N N IDS IDS 21021S0838B
HIC 104272
 
 
21074-0814 C
 
 
Coord arcsec 2000 210726.91-081353.4 Coord calc 210726.91-081353.4 Mag 14.1 PmRA 25.00
PmDE 0.0 Calc delta mag 6.54
CCDM
Ccdm 21074-0814 RComp Comp C Note1
Note2 Discov num BU 368 DRAs DDEs
R dRAs Year 1890 Theta 029 Rho 12.1
Obs 2 Vmag 13.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14648 M ADS BDS N IDS IDS 21021S0838C
HIC
 
 
21074-0814 D
 
 
Coord arcsec 2000 210726.56-081350.6 Mag 14.8 Calc delta mag 7.24 Calc coord yes
CCDM
Ccdm 21074-0814 RComp C Comp D Note1
Note2 Discov num BU 368 DRAs DDEs
R dRAs Year 1898 Theta 316 Rho 5.1
Obs Vmag 14.2 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14648 M ADS BDS N IDS IDS 21021S0838D
HIC
 
 
21074-0814 E
 
 
Coord arcsec 2000 210729.33-081428.8 Mag 14.92 Calc delta mag 7.36 Calc coord yes