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Doubles in session


Current system
21125+2821
HO 152
HD 202015


Nearby doubles
15' : 21134+2813
BRT3365

22' : 21139+2809
TDT2843

25' : 21119+2758
TDT2814

37' : 21151+2808
J 1154

42' : 21098+2915
DU 3

45' : 21092+2820
MLB 537

46' : 21152+2753
COU 531

46' : 21103+2744
GRV 432

48' : 21153+2848
MLB 488

50' : 21134+2733
TDT2836

52' : 21094+2850
DOB9002

52' : 21144+2905
STF2779AB

52' : 21146+2737
COU 530

57' : 21167+2819
MLB 574

59' : 21159+2858
HDS3025

61' : 21133+2722
BRT 222

62' : 21162+2858
TDT2873

64' : 21115+2719
NSN 796

66' : 21150+2917
GRV 438

67' : 21108+2718
BRT1958

69' : 21109+2925
BAG 29

69' : 21177+2815
TDT2889

71' : 21176+2841
MLB 489AB

72' : 21072+2833
COU 528

74' : 21181+2825
HJ 1632

74' : 21088+2916
MLB 487



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.

21125+2821 HO 152 (HD 202015)

 
 
21h 12m 31.11s +28° 20' 39.1" P.A. 158.00 sep 0.2 mag 8.87,9.39 Sp F8 dist. 129.7 pc (423.08 l.y.)
 
 
Coord 2000 21125+2821 Discov num HO  152 Comp Coord arcsec 2000 21 12 31.11 +28 20 39.1
Date first 1882 Date last 2016 Obs 73
Pa first 320 Pa last 158.4 P.A. Now (θ) 227.2°
Sep first 0.5 Sep last 0.167 Sep. Now (ρ) 0.071"
Mag pri 8.87 Mag sec 9.39 delta mag (ΔM) 0.52 Spectral class F8 (yellow-white)
Pri motion ra +034 Sec motion ra
Pri motion dec -017 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 202015 Constellation Vulpecula SAO 89529 HIP 104701
Tycho2 2185-01934-1 Gaia DR2 1851191656893178240 HD 202015 ADS 14748
BD BD+27 4003 Distance 129.7 Distance ly 423.08
 
 
ORBITAL ELEMENTS
 
 
Period (P)202y± 15 Periastron (T)2014.66y± 0.6 Semi-major axis (a)0.377a± 0.01
Eccentricity (e)0.504± 0.025 Inclination (i)70.3°± 1.5 Longitude of periastron (ω)44°± 5
Node (Ω)131°± 1.5 Notes ReferenceDoc2021e
Equinox Last observation2016 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 119.7 0.218
2001 121.2 0.218
2002 122.8 0.219
2003 124.3 0.218
2004 125.9 0.217
2005 127.5 0.214
2006 129.1 0.211
2007 130.8 0.207
2008 132.5 0.202
2009 134.4 0.196
2010 136.4 0.188
2011 138.6 0.180
2012 141.0 0.171
2013 143.6 0.160
2014 146.7 0.149
2015 150.3 0.137
2016 154.6 0.125
2017 159.8 0.113
2018 166.4 0.101
2019 174.6 0.089
2020 185.0 0.080
2021 197.7 0.073
2022 212.3 0.070
2023 227.2 0.071
2024 240.8 0.077
2025 252.1 0.085
2026 261.1 0.096
2027 268.2 0.109
2028 273.7 0.122
2029 278.2 0.136
2030 281.8 0.150


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


 
  


wds21125%2B2821d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 21125+2821 HO 152 (HD 202015) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Doc2021e orb - Docobo, J.A. & Campo, P. 2021IAUDS.205....1S
Doc2021e Inf. Circ. 205, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 HO Hough, G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21125+2821 HO 152 1998 63 115 0.2 8.87 9.39 F8 NO 211231.11+282039.1
21125+2821 HO 152 2007 65 131 0.2 8.87 9.39 F8 NO 211231.11+282039.1
21125+2821 HO 152 2010 66 135 0.2 8.87 9.39 F8 NO 211231.11+282039.1
21125+2821 HO 152 2011 68 137 0.2 8.87 9.39 F8 O 211231.11+282039.1
21125+2821 HO 152 2016 70 158 0.2 8.87 9.39 F8 O 211231.11+282039.1

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

 
 
WDS 21125+2821 HO 152 (HD 202015) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21125+2821 HO 152 (HD 202015) : MEASURES
 
 
No records found.

 
 
WDS 21125+2821 (HD 202015) : VIRTUAL EYEPIECE
 
 

21125+2821 HO 152A mag 8.87 Sp F8 21125+2821 HO 152B sep 0.2 P.A. 160.80 mag 9.39 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 21125+2821 (HD 202015) : ALADIN DSS IMAGE @ 21h 12m 31.11s +28° 20' 39.1"
 
 
 
 
WDS 21125+2821 HO 152 (HD 202015) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21125+2821 HO 152 distance=0' 21134+2813 BRT3365 distance=15' 21139+2809 TDT2843 distance=22' 21119+2758 TDT2814 distance=25' 21151+2808 J 1154 distance=37' 21098+2915 DU 3 distance=42' 21092+2820 MLB 537 distance=45' 21152+2753 COU 531 distance=46' 21103+2744 GRV 432 distance=46' 21153+2848 MLB 488 distance=48' 21134+2733 TDT2836 distance=50' 21094+2850 DOB9002 distance=52' 21144+2905 STF2779AB distance=52' 21144+2905 STF2779AC distance=52' 21146+2737 COU 530 distance=52' 21167+2819 MLB 574 distance=57' 21159+2858 HDS3025 distance=59' 21133+2722 BRT 222 distance=61' 21162+2858 TDT2873 distance=62' 21115+2719 NSN 796 distance=64' 21150+2917 GRV 438 distance=66' 21108+2718 BRT1958 distance=67' 21109+2925 BAG 29 distance=69' 21177+2815 TDT2889 distance=69' 21176+2841 MLB 489AB distance=71' 21176+2841 MLB 489AC distance=71' 21072+2833 COU 528 distance=72' 21181+2825 HJ 1632 distance=74' 21088+2916 MLB 487 distance=74' 21070+2816 HJ 1611 distance=74' 21091+2922 COU1332 distance=76' 21083+2913 COU1331 distance=76' 21162+2928 J 1784 distance=83' 21118+2943 HAU 27 distance=83' 21129+2944 MLB 667 distance=83' 21176+2915 COU 835AB distance=87' 21176+2915 COU 835AC distance=87' 21061+2801 COU 525 distance=88' 21061+2843 LDS2939 distance=88' 21075+2924 TDT2769 distance=91' 21054+2824 MLB 666 distance=94' 21197+2823 LDS4879 distance=96' 21053+2807 HDS3006 distance=96' 21162+2948 TDT2872 distance=100' 21201+2809 J 196 distance=101' 21198+2748 LSC 96 distance=102' 21110+2642 BRT3364 distance=102' 21161+2951 BWL 56BF distance=103' 21161+2951 LDS1053AB distance=103' 21161+2951 BWL 56Aa,Ab distance=103' 21161+2951 BWL 56AC distance=103' 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 21125+2821 HO 152 158 0.2
Show 21134+2813 BRT3365 244 6.0 15
Show 21139+2809 TDT2843 162 1.0 22
Show 21119+2758 TDT2814 290 2.3 25
Show 21151+2808 J 1154 108 1.8 37
Show 21098+2915 DU 3 15 6.1 42
Show 21092+2820 MLB 537 99 7.0 45
Show 21152+2753 COU 531 144 0.9 46
Show 21103+2744 GRV 432 349 65.8 46
Show 21153+2848 MLB 488 306 11.4 48
Show 21134+2733 TDT2836 135 0.6 50
Show 21094+2850 DOB9002 104 18.6 52
Show 21144+2905 STF2779 AB 164 15.1 52
Show 21144+2905 STF2779 AC 71 67.7 52
Show 21146+2737 COU 530 227 2.1 52
Show 21167+2819 MLB 574 334 7.7 57
Show 21159+2858 HDS3025 46 0.2 59
Show 21133+2722 BRT 222 192 3.5 61
Show 21162+2858 TDT2873 277 0.8 62
Show 21115+2719 NSN 796 210 6.9 64
Show 21150+2917 GRV 438 8 15.2 66
Show 21108+2718 BRT1958 166 2.5 67
Show 21109+2925 BAG 29 174 0.2 69
Show 21177+2815 TDT2889 45 0.5 69
Show 21176+2841 MLB 489 AB 205 5.0 71
Show 21176+2841 MLB 489 AC 284 11.0 71
Show 21072+2833 COU 528 70 1.2 72
Show 21181+2825 HJ 1632 44 8.2 74
Show 21088+2916 MLB 487 142 4.3 74
Show 21070+2816 HJ 1611 279 10.7 74
Show 21091+2922 COU1332 20 0.2 76
Show 21083+2913 COU1331 37 0.3 76
Show 21162+2928 J 1784 338 5.0 83
Show 21118+2943 HAU 27 297 50.0 83
Show 21129+2944 MLB 667 30 2.4 83
Show 21176+2915 COU 835 AB 238 0.4 87
Show 21176+2915 COU 835 AC 247 12.3 87
Show 21061+2801 COU 525 168 1.1 88
Show 21061+2843 LDS2939 320 5.9 88
Show 21075+2924 TDT2769 157 1.1 91
Show 21054+2824 MLB 666 352 1.4 94
Show 21197+2823 LDS4879 88 258.8 96
Show 21053+2807 HDS3006 12 0.7 96
Show 21162+2948 TDT2872 163 0.7 100
Show 21201+2809 J 196 254 3.4 101
Show 21198+2748 LSC 96 299 0.5 102
Show 21110+2642 BRT3364 148 3.5 102
Show 21161+2951 BWL 56 BF 233 3.5 103
Show 21161+2951 LDS1053 AB 259 26.0 103
Show 21161+2951 BWL 56 Aa,Ab 163 0.1 103
Show 21161+2951 BWL 56 AC 77 3.4 103

 
 
WDS 21125+2821 : COMPONENTS
 
 
  A
B pa=160.8°
sep=0.16"
 
 
21125+2821 A
 
 
Componente originario normalizzato AB Name HD 202015 Coord arcsec 2000 211231.11+282039.1 Mag 8.87
Spectral class F8 (yellow-white) PmRA 34.00 PmDE -17.0 SAO 89529
HIP 104701 Tycho2 2185-01934-1 HD 202015 BD BD+27 4003
Tycho2
Tycho2 2185-01934-1 Pflag RAmdeg 318.12967921 DEmdeg 28.34418515
PmRA 25.9 PmDE -9.7 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.2 EpRAm 1991.27 EpDEm 1990.90
Num 10 Q RAmdeg 0.8 Q DEmdeg 1.3 Q pmRA 0.8
Q pmDE 1.3 BTmag 8.846 E BTmag 0.016 VTmag 8.293
E VTmag 0.011 Prox 999 TYC T HIP 104701
CCDM AS RAdeg 318.12961056 DEdeg 28.34420833 EpRA 1990 1.58
EpDE 1990 1.36 E RAdeg 5.2 E DEdeg 5.9 Posflg P
Corr 0.2
SAO
SAO 89529 DelFlag RA1950 PmRA1950 0.0004
DE1950 PmDE1950 -0.004 Vmag 8.4 SpType F8
Double code Source 34 CatNum 12248 DM BD+27 4003
DMcomp BDsup HD 202015 M HD 0
GC RA1950rad 5.54296742 DE1950rad 0.49110095 PmRA2000 0.0005
PmDE2000 -0.008
Hipparcos
Catalog H HIP 104701 Proxy H RAhms 21 12 31.11
DEdms +28 20 39.1 Vmag 8.23 VarFlag R Vmag H
RAdeg 318.13 DEdeg 28.3442 AstroRef * Plx 9.74
CCDM 21125+2821 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AS
Theta 102 Rho 0.193 HD 202015 BD BD+27 4003
CD CP Dm number +27 4003 VIred 0.57
SpType F8 R SpType Coord arcsec 2000 211231.11+282039.1
Hipparcos 2
HIP 104701 Sn 55 So 3 Nc 2
RArad 5.5524091665 DErad 0.4946997016 Plx 7.71 PmRA 23.37
PmDE -9.94 E RArad 0.66 E DErad 0.48 E Plx 0.87
E pmRA 0.76 E pmDE 0.48 Hpmag 8.3413 E Hpmag 0.0013
SHp 0.015 VA 0 BV 0.504 E BV 0.012
VI 0.58
CCDM
Ccdm 21125+2821 RComp Comp A Note1
Note2 Discov num DRAs 1.16 DDEs -21.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.2 Sp F8 PmNote *
PmRA 37 PmDE -18 Dm number +27 4003 Cat1 BD
Name2 +28 2427 Cat2 AGK2/3 HD 202015 M HD
ADS BDS A14748 M ADS BDS N IDS IDS 21082N2756A
HIC 104701
 
 
21125+2821 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211231.11+282038.9 Mag 9.39 Calc delta mag 0.52
Calc coord yes
CCDM
Ccdm 21125+2821 RComp Comp B Note1 *
Note2 Discov num HO 152 DRAs DDEs
R dRAs Year 1882 Theta Rho
Obs 22 Vmag 9.3 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A14748 M ADS BDS N IDS IDS 21082N2756B
HIC 104701