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Current system
20524+2008
HO 144
HD 198810


Nearby doubles
18' : 20517+1954
TDT2585

25' : 20507+1959
ROE 16AB

26' : 20509+1953
UC 255

37' : 20536+1935
HO 597

47' : 20493+2026
HJ 926

48' : 20534+1921
J 573

52' : 20558+2027
J 606

54' : 20554+1935
UC 4329

56' : 20488+1943
JNN 286

65' : 20509+1907
J 195

71' : 20537+2116
J 2327AB

72' : 20574+2010
HO 640

81' : 20579+2009
BRT2486

86' : 20582+1942
TDT2663

87' : 20553+1852
KPP3364

87' : 20467+2044
HJ 2999AB

88' : 20523+1841
UC 4314

90' : 20471+1918
HO 141AB

92' : 20485+1854
HO 459

92' : 20565+2118
A 2797

97' : 20558+2131
COU 727

97' : 20466+1915
COU 426

97' : 20467+1913
GWP2997

99' : 20472+1901
TDT2538

105' : 20598+2004
STF2739

109' : 20479+1840
UC 4292



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20524+2008 HO 144 (HD 198810)

 
 
20h 52m 21.84s +20° 07' 41.6" P.A. 350.00 sep 0.4 mag 7.98,8.95 Sp K4III+F0V dist. 222.22 pc (724.88 l.y.)
 
 
Coord 2000 20524+2008 Discov num HO  144 Comp Coord arcsec 2000 20 52 21.84 +20 07 41.6
Date first 1886 Date last 2021 Obs 92
Pa first 168 Pa last 350.1 P.A. Now (θ) 350.1°
Sep first 0.4 Sep last 0.439 Sep. Now (ρ) 0.439"
Mag pri 7.98 Mag sec 8.95 delta mag (ΔM) 0.97 Spectral class K4III+F0V (yellow-orange/yellow-white)
Pri motion ra -004 Sec motion ra -004
Pri motion dec +002 Sec motion dec +002
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198810 Constellation Vulpecula SAO 106598 HIP 103028
Tycho2 1655-00484-1 Gaia DR2 1813778707875923072 HD 198810 ADS 14379
BD BD+19 4544 Distance 222.22 Distance ly 724.88
 
 
ORBITAL ELEMENTS
 
 
Period (P)1644y± 186 Periastron (T)1944.84y± 0.07 Semi-major axis (a)1.031a± 0.071
Eccentricity (e)0.791± 0.015 Inclination (i)91.5°± 0.1 Longitude of periastron (ω)116.9°± 0.1
Node (Ω)168.9°± 0.1 Notesn ReferenceLin2012a
Equinox2000 Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 347.9 0.356
2001 347.8 0.357
2002 347.8 0.357
2003 347.8 0.358
2004 347.7 0.359
2005 347.7 0.359
2006 347.7 0.360
2007 347.6 0.360
2008 347.6 0.361
2009 347.6 0.361
2010 347.6 0.361
2011 347.5 0.361
2012 347.5 0.362
2013 347.5 0.362
2014 347.4 0.362
2015 347.4 0.362
2016 347.4 0.362
2017 347.4 0.362
2018 347.3 0.362
2019 347.3 0.362
2020 347.3 0.362
2021 347.2 0.361
2022 347.2 0.361
2023 347.2 0.361
2024 347.2 0.360
2025 347.1 0.360
2026 347.1 0.360
2027 347.1 0.359
2028 347.0 0.359
2029 347.0 0.358
2030 347.0 0.358


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


 
  


wds20524%2B2008b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20524+2008 HO 144 (HD 198810) : NOTES
 
 
discov_num notes refcode
HO 144 Rapid change. Distance < 0.1" 1933-1941. Quadrant uncertain.
 
 
REFERENCES
 
 
refcode metd author reference
Lin2012a orb - Ling, J.F. 2012AJ....143...20L
Lin2012a AJ 143, 20, 2012
 
 
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
20524+2008 HO 144 2000 83 348 0.4 7.98 8.95 F5 A0 NO 205221.84+200741.6
20524+2008 HO 144 2005 85 348 0.4 7.98 8.95 F5+A0 N D 205221.84+200741.6
20524+2008 HO 144 2017 86 346 0.4 7.98 8.95 F5+A0 NO 205221.84+200741.6
20524+2008 HO 144 2018 87 348 0.4 7.98 8.95 F5+A0 NO 205221.84+200741.6
20524+2008 HO 144 2021 92 350 0.4 7.98 8.95 K4III+F0V NO 205221.84+200741.6

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

 
 
WDS 20524+2008 HO 144 (HD 198810) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20524+2008 HO 144 (HD 198810) : MEASURES
 
 
No records found.

 
 
WDS 20524+2008 (HD 198810) : VIRTUAL EYEPIECE
 
 

20524+2008 HO 144A mag 7.98 Sp K4III 20524+2008 HO 144B sep 0.4 P.A. 350.70 mag 8.95 Sp F0V 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 20524+2008 (HD 198810) : ALADIN DSS IMAGE @ 20h 52m 21.84s +20° 07' 41.6"
 
 
 
 
WDS 20524+2008 HO 144 (HD 198810) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20524+2008 HO 144 distance=0' 20517+1954 TDT2585 distance=18' 20507+1959 ROE 16AB distance=25' 20507+1959 ROE 16AC distance=25' 20509+1953 UC 255 distance=26' 20536+1935 HO 597 distance=37' 20493+2026 HJ 926 distance=47' 20534+1921 J 573 distance=48' 20558+2027 J 606 distance=52' 20554+1935 UC 4329 distance=54' 20488+1943 JNN 286 distance=56' 20509+1907 J 195 distance=65' 20537+2116 J 2327AB distance=71' 20537+2116 KPP3429AD distance=71' 20574+2010 HO 640 distance=72' 20537+2116 J 2327BC distance=72' 20579+2009 BRT2486 distance=81' 20582+1942 TDT2663 distance=86' 20553+1852 KPP3364 distance=87' 20467+2044 HJ 2999AB distance=87' 20467+2044 TOB 197AC distance=87' 20523+1841 UC 4314 distance=88' 20471+1918 HO 141AB distance=90' 20471+1918 HO 141AC distance=90' 20485+1854 HO 459 distance=92' 20565+2118 A 2797 distance=92' 20558+2131 COU 727 distance=97' 20466+1915 COU 426 distance=97' 20467+1913 GWP2997 distance=97' 20472+1901 TDT2538 distance=99' 20598+2004 STF2739 distance=105' 20479+1840 UC 4292 distance=109' 20449+2041 J 1179 distance=110' 20448+1943 COU 424 distance=110' 20447+2032 BRT2484 distance=111' 20577+1846 GWP3022 distance=111' 20448+2051 A 172 distance=115' 20467+1846 YR 28 distance=115' 20444+1945 CAR 2 distance=116' 20530+1806 UC 4316 distance=122' 20499+1811 UC 4302 distance=122' 21005+1920 BU 1497 distance=124' 20436+1944 STF2722 distance=126' 20567+1818 BPM2298 distance=126' 20435+1953 STF2721 distance=126' 20493+2206 GRV 383 distance=126' 20480+1816 BPM2268 distance=128' 21008+2057 A 176 distance=129' 20587+1833 RAO 444 distance=131' 20522+2218 J 1327 distance=131' 20444+2119 A 171 distance=133' 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 20524+2008 HO 144 350 0.4
Show 20517+1954 TDT2585 272 0.6 18
Show 20507+1959 ROE 16 AB 75 6.0 25
Show 20507+1959 ROE 16 AC 246 8.6 25
Show 20509+1953 UC 255 263 11.9 26
Show 20536+1935 HO 597 236 10.3 37
Show 20493+2026 HJ 926 190 5.8 47
Show 20534+1921 J 573 186 4.2 48
Show 20558+2027 J 606 185 2.6 52
Show 20554+1935 UC 4329 262 32.9 54
Show 20488+1943 JNN 286 179 0.2 56
Show 20509+1907 J 195 23 3.3 65
Show 20537+2116 J 2327 AB 48 68.4 71
Show 20537+2116 KPP3429 AD 9 32.9 71
Show 20574+2010 HO 640 257 12.5 72
Show 20537+2116 J 2327 BC 175 4.4 72
Show 20579+2009 BRT2486 165 2.9 81
Show 20582+1942 TDT2663 36 0.9 86
Show 20553+1852 KPP3364 154 2.7 87
Show 20467+2044 HJ 2999 AB 221 10.3 87
Show 20467+2044 TOB 197 AC 271 19.5 87
Show 20523+1841 UC 4314 181 49.2 88
Show 20471+1918 HO 141 AB 294 1.6 90
Show 20471+1918 HO 141 AC 64 22.6 90
Show 20485+1854 HO 459 24 0.5 92
Show 20565+2118 A 2797 237 0.1 92
Show 20558+2131 COU 727 353 1.1 97
Show 20466+1915 COU 426 158 0.3 97
Show 20467+1913 GWP2997 116 272.0 97
Show 20472+1901 TDT2538 234 1.0 99
Show 20598+2004 STF2739 252 3.3 105
Show 20479+1840 UC 4292 105 11.0 109
Show 20449+2041 J 1179 143 4.0 110
Show 20448+1943 COU 424 239 5.5 110
Show 20447+2032 BRT2484 5 2.9 111
Show 20577+1846 GWP3022 108 5.7 111
Show 20448+2051 A 172 219 2.9 115
Show 20467+1846 YR 28 71 0.0 115
Show 20444+1945 CAR 2 82 0.2 116
Show 20530+1806 UC 4316 216 48.9 122
Show 20499+1811 UC 4302 172 82.1 122
Show 21005+1920 BU 1497 337 49.3 124
Show 20436+1944 STF2722 306 7.5 126
Show 20567+1818 BPM2298 348 78.4 126
Show 20435+1953 STF2721 22 2.6 126
Show 20493+2206 GRV 383 124 21.2 126
Show 20480+1816 BPM2268 54 74.1 128
Show 21008+2057 A 176 175 0.3 129
Show 20587+1833 RAO 444 194 1.4 131
Show 20522+2218 J 1327 58 2.7 131
Show 20444+2119 A 171 325 5.4 133

 
 
WDS 20524+2008 : COMPONENTS
 
 
  A
B pa=350.7°
sep=0.44"
 
 
20524+2008 A
 
 
Componente originario normalizzato AB Name HD 198810 Coord arcsec 2000 205221.84+200741.6 Mag 7.98
Spectral class K4III (yellow-orange) PmRA -4.00 PmDE 2.0 SAO 106598
HIP 103028 Tycho2 1655-00484-1 HD 198810 BD BD+19 4544
Tycho2
Tycho2 1655-00484-1 Pflag RAmdeg 313.09098886 DEmdeg 20.12826240
PmRA -3.9 PmDE 2.1 E RAmdeg 5 E DEmdeg 6
E pmRA 1.1 E pmDE 1.0 EpRAm 1991.17 EpDEm 1990.87
Num 12 Q RAmdeg 0.8 Q DEmdeg 0.7 Q pmRA 0.7
Q pmDE 0.8 BTmag 8.334 E BTmag 0.016 VTmag 7.644
E VTmag 0.011 Prox 999 TYC T HIP 103028
CCDM AB RAdeg 313.09099861 DEdeg 20.12825750 EpRA 1990 1.54
EpDE 1990 1.43 E RAdeg 4.9 E DEdeg 5.6 Posflg P
Corr 0.0
SAO
SAO 106598 DelFlag RA1950 PmRA1950 -0.0005
DE1950 PmDE1950 0.019 Vmag 7.3 SpType +++
Double code Source 28 CatNum 8449 DM BD+19 4544
DMcomp BDsup HD 198810 M HD 9
GC RA1950rad 5.45458548 DE1950rad 0.34800398 PmRA2000 -0.0005
PmDE2000 0.016
Hipparcos
Catalog H HIP 103028 Proxy H RAhms 20 52 21.84
DEdms +20 07 41.6 Vmag 7.54 VarFlag R Vmag H
RAdeg 313.091 DEdeg 20.1282 AstroRef A Plx 3.4
CCDM 20524+2008 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 348 Rho 0.356 HD 198810 BD BD+19 4544
CD CP Dm number +19 4544 VIred 0.69
SpType F5 R SpType Coord arcsec 2000 205221.84+200741.6
Hipparcos 2
HIP 103028 Sn 15 So 3 Nc 2
RArad 5.4644690015 DErad 0.351303548 Plx 4.5 PmRA -3.91
PmDE -1.23 E RArad 0.71 E DErad 0.72 E Plx 1.08
E pmRA 0.81 E pmDE 0.79 Hpmag 7.6768 E Hpmag 0.0016
SHp 0.012 VA 0 BV 0.642 E BV 0.011
VI 0.71
CCDM
Ccdm 20524+2008 RComp Comp A Note1
Note2 Discov num DRAs -2.19 DDEs -18.2
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.0 Sp F5 PmNote *
PmRA -7 PmDE 2 Dm number +19 4544 Cat1 BD
Name2 +19 2107 Cat2 AGK2/3 HD 198810 M HD
ADS BDS A14379 M ADS BDS N IDS IDS 20478N1945A
HIC 103028
 
 
20524+2008 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205221.83+200742.0 Mag 8.95 Spectral class F0V (yellow-white)
PmRA -4.00 PmDE 2.0 Calc delta mag 0.97 Calc coord yes
CCDM
Ccdm 20524+2008 RComp Comp B Note1
Note2 Discov num HO 144 DRAs DDEs
R dRAs Year 1959 Theta 352 Rho 0.3
Obs 99 Vmag 8.0 Sp A0 PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD 198811 M HD
ADS BDS A14379 M ADS BDS N N IDS IDS 20478N1945B
HIC 103028