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Doubles in session


Current system
20310-2907
CHR 185
HD 195206


Nearby doubles
32' : 20325-2843
SKF2087AB

58' : 20295-3001
HJ 5202

63' : 20319-2806
TDT2341

78' : 20254-2840
CHR 97

80' : 20295-3024
B 2886

92' : 20365-2813
RST2147

93' : 20275-3028
KPP2320

100' : 20375-2817
BRT3093

107' : 20235-2827
DAW 152AB

110' : 20297-2719
COO 240

112' : 20226-2928
JNN 325

120' : 20393-2820
RST2149

120' : 20313-2707
SKF2086

122' : 20229-3008
JSP 813

122' : 20401-2852
SEE 423AB

122' : 20326-3107
PRO 230

123' : 20339-2710
CBL 178

124' : 20400-2940
RST2151

127' : 20310-2700
DAM1042

128' : 20253-3052
TDT2257

130' : 20215-2946
TDS1063

131' : 20211-2916
BRT3091

133' : 20319-2655
RST2143

134' : 20280-3115
OL 26

137' : 20209-2828
LDS5904AB

138' : 20205-2912
HJ 5188AB



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.

20310-2907 CHR 185 (HD 195206)

 
 
20h 30m 56.79s -29° 06' 45.5" P.A. 266.00 sep 0.0 mag 9.20,6.50 Sp A5V dist. 209.21 pc (682.44 l.y.)
 
 
Coord 2000 20310-2907 Discov num CHR 185 Comp Coord arcsec 2000 20 30 56.79 -29 06 45.5
Date first 1991 Date last 2020 Obs 7
Pa first 297 Pa last 266.3 P.A. Now (θ) 266.3°
Sep first 0.3 Sep last 0.029 Sep. Now (ρ) 0.029"
Mag pri 9.20 Mag sec 6.50 delta mag (ΔM) 2.7 Spectral class A5V (white)
Pri motion ra +016 Sec motion ra
Pri motion dec +005 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 195206 Constellation Microscopium SAO 189374 HIP 101211
Tycho2 6920-01488-1 Gaia DR2 6797016991257105152 HD 195206 HR 7832
GC 28524 CD CD-2917122 CP CP-29 6318 Distance 209.21
Distance ly 682.44
 
 
ORBITAL ELEMENTS
 
 
Period (P)100y Periastron (T)2022.61y Semi-major axis (a)0.16a
Eccentricity (e)0.9 Inclination (i)119.2° Longitude of periastron (ω)348.2°
Node (Ω)114.1° Notes ReferenceTok2021c
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 293.1 0.241
2001 292.7 0.235
2002 292.4 0.230
2003 292.0 0.224
2004 291.6 0.218
2005 291.2 0.212
2006 290.7 0.205
2007 290.2 0.198
2008 289.7 0.190
2009 289.2 0.182
2010 288.5 0.174
2011 287.9 0.165
2012 287.1 0.156
2013 286.2 0.146
2014 285.2 0.135
2015 284.1 0.124
2016 282.6 0.111
2017 280.9 0.098
2018 278.5 0.084
2019 275.0 0.068
2020 269.2 0.050
2021 256.1 0.030
2022 191.4 0.012
2023 91.0 0.016
2024 17.3 0.019
2025 346.7 0.034
2026 334.8 0.049
2027 328.5 0.063
2028 324.4 0.077
2029 321.6 0.089
2030 319.4 0.101


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


 
  


wds20310-2907a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 20310-2907 CHR 185 (HD 195206) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2021c orb - Tokovinin, A. 2021IAUDS.203....1S
Tok2021c Inf. Circ. 203, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20310-2907 CHR 185 1992 2 295 0.3 9.20 6.50 A5V 203056.79-290645.5
20310-2907 CHR 185 2014 3 283 0.1 9.20 6.50 A5V 203056.79-290645.5
20310-2907 CHR 185 2017 4 279 0.1 9.20 6.50 A5V 203056.79-290645.5
20310-2907 CHR 185 2018 5 278 0.1 9.20 6.50 A5V 203056.79-290645.5
20310-2907 CHR 185 2019 6 274 0.1 9.20 6.50 A5V 203056.79-290645.5
20310-2907 CHR 185 2020 7 266 0.0 9.20 6.50 A5V 203056.79-290645.5

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

 
 
WDS 20310-2907 CHR 185 (HD 195206) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20310-2907 CHR 185 (HD 195206) : MEASURES
 
 
No records found.

 
 
WDS 20310-2907 (HD 195206) : VIRTUAL EYEPIECE
 
 

20310-2907 CHR 185A mag 9.2 Sp A5V 20310-2907 CHR 185B mag 6.5 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 20310-2907 (HD 195206) : ALADIN DSS IMAGE @ 20h 30m 56.79s -29° 06' 45.5"
 
 
 
 
WDS 20310-2907 CHR 185 (HD 195206) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20310-2907 CHR 185 distance=0' 20325-2843 SKF2087AB distance=32' 20325-2843 DAM1043AC distance=32' 20295-3001 HJ 5202 distance=58' 20319-2806 TDT2341 distance=63' 20254-2840 CHR 97 distance=78' 20295-3024 B 2886 distance=80' 20365-2813 RST2147 distance=92' 20275-3028 KPP2320 distance=93' 20375-2817 BRT3093 distance=100' 20235-2827 DAW 152AB distance=107' 20297-2719 COO 240 distance=110' 20226-2928 JNN 325 distance=112' 20393-2820 RST2149 distance=120' 20313-2707 SKF2086 distance=120' 20229-3008 JSP 813 distance=122' 20401-2852 SEE 423AB distance=122' 20401-2852 SEE 423BC distance=122' 20326-3107 PRO 230 distance=122' 20339-2710 CBL 178 distance=123' 20400-2940 RST2151 distance=124' 20310-2700 DAM1042 distance=127' 20253-3052 TDT2257 distance=128' 20215-2946 TDS1063 distance=130' 20211-2916 BRT3091 distance=131' 20319-2655 RST2143 distance=133' 20280-3115 OL 26 distance=134' 20205-2912 HJ 5188DE distance=137' 20209-2828 LDS5904AB distance=137' 20209-2828 LDS5904Aa,Ab distance=137' 20205-2912 WIE 1BF distance=138' 20205-2912 HJ 5188AB distance=138' 20205-2912 HJ 5188AC distance=138' 20205-2912 HJ 5188AD distance=138' 20327-3123 HJ 5206 distance=139' 20373-2717 HJ 2982 distance=139' 20202-2908 GLP 18 distance=141' 20213-2805 KPP1098 distance=141' 20289-2647 B 487 distance=143' 20334-2643 B 491 distance=148' 20412-3015 RST2152 distance=151' 20372-3114 HDS2943 distance=151' 20288-2638 RST2141 distance=152' 20345-3131 KPP1926 distance=152' 20353-3126 LDS5908 distance=152' 20427-2855 RST2153 distance=155' 20331-2633 LDS5907 distance=156' 20205-2749 RST3255 distance=159' 20396-2717 RST2150 distance=159' 20430-2846 SEE 425 distance=161' 20265-2638 HWE 54 distance=161' 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 20310-2907 CHR 185 266 0.0
Show 20325-2843 SKF2087 AB 9 61.0 32
Show 20325-2843 DAM1043 AC 197 11.5 32
Show 20295-3001 HJ 5202 84 15.6 58
Show 20319-2806 TDT2341 318 0.5 63
Show 20254-2840 CHR 97 10 0.1 78
Show 20295-3024 B 2886 199 7.2 80
Show 20365-2813 RST2147 315 1.2 92
Show 20275-3028 KPP2320 320 19.6 93
Show 20375-2817 BRT3093 85 3.8 100
Show 20235-2827 DAW 152 AB 295 2.6 107
Show 20297-2719 COO 240 21 7.1 110
Show 20226-2928 JNN 325 214 0.2 112
Show 20393-2820 RST2149 155 1.0 120
Show 20313-2707 SKF2086 306 7.1 120
Show 20229-3008 JSP 813 269 5.3 122
Show 20401-2852 SEE 423 AB 39 1.2 122
Show 20401-2852 SEE 423 BC 281 0.2 122
Show 20326-3107 PRO 230 104 6.5 122
Show 20339-2710 CBL 178 40 52.0 123
Show 20400-2940 RST2151 57 0.2 124
Show 20310-2700 DAM1042 179 10.8 127
Show 20253-3052 TDT2257 261 0.5 128
Show 20215-2946 TDS1063 214 1.0 130
Show 20211-2916 BRT3091 52 2.8 131
Show 20319-2655 RST2143 259 0.3 133
Show 20280-3115 OL 26 327 2.0 134
Show 20205-2912 HJ 5188 DE 186 4.7 137
Show 20209-2828 LDS5904 AB 49 254.6 137
Show 20209-2828 LDS5904 Aa,Ab 345 2.1 137
Show 20205-2912 WIE 1 BF 263 437.0 138
Show 20205-2912 HJ 5188 AB 38 3.7 138
Show 20205-2912 HJ 5188 AC 321 27.3 138
Show 20205-2912 HJ 5188 AD 38 120.6 138
Show 20327-3123 HJ 5206 192 16.4 139
Show 20373-2717 HJ 2982 137 15.8 139
Show 20202-2908 GLP 18 198 56.8 141
Show 20213-2805 KPP1098 254 8.7 141
Show 20289-2647 B 487 5 1.4 143
Show 20334-2643 B 491 104 2.6 148
Show 20412-3015 RST2152 335 0.9 151
Show 20372-3114 HDS2943 75 2.1 151
Show 20288-2638 RST2141 139 1.7 152
Show 20345-3131 KPP1926 56 15.1 152
Show 20353-3126 LDS5908 124 248.3 152
Show 20427-2855 RST2153 42 0.2 155
Show 20331-2633 LDS5907 211 206.4 156
Show 20205-2749 RST3255 109 0.1 159
Show 20396-2717 RST2150 5 1.7 159
Show 20430-2846 SEE 425 226 7.9 161
Show 20265-2638 HWE 54 59 2.8 161

 
 
WDS 20310-2907 : COMPONENTS
 
 
  A
B pa=265.8°
sep=0.03"
 
 
20310-2907 A
 
 
Componente originario normalizzato AB Name HD 195206 Coord arcsec 2000 203056.79-290645.5 Mag 9.2
Spectral class A5V (white) PmRA 16.00 PmDE 5.0 SAO 189374
HIP 101211 HD 195206 HR 7832 GC 28524
CD CD-2917122 CP CP-29 6318
SAO
SAO 189374 DelFlag RA1950 PmRA1950 0.0012
DE1950 PmDE1950 0.005 Vmag 6.1 SpType A5
Double code Source 70 CatNum 28524 DM CD-2917122
DMcomp BDsup HD 195206 M HD 0
GC 28524 RA1950rad 5.35766889 DE1950rad -0.51105805 PmRA2000 0.0011
PmDE2000 0.003
Hipparcos
Catalog H HIP 101211 Proxy H RAhms 20 30 56.79
DEdms -29 06 45.5 Vmag 6.35 VarFlag R Vmag H
RAdeg 307.737 DEdeg -29.1126 AstroRef * Plx 5.49
CCDM 20309-2907 N CCDM M Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP BA
Theta 117 Rho 0.279 HD 195206 BD
CD CD-2917122 CP CP-29 6318 Dm number -2917122 VIred 0.23
SpType A5V R SpType Coord arcsec 2000 203056.79-290645.5
Hipparcos 2
HIP 101211 Sn 55 So 3 Nc 2
RArad 5.3710174209 DErad -0.5081116029 Plx 4.78 PmRA 17.79
PmDE -6.11 E RArad 0.55 E DErad 0.31 E Plx 0.59
E pmRA 0.77 E pmDE 0.53 Hpmag 6.4162 E Hpmag 0.0006
SHp 0.007 VA 0 BV 0.227 E BV 0.008
VI 0.25
 
 
20310-2907 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203056.79-290645.5 Mag 6.5 Tycho2 6920-01488-1
Calc delta mag 2.7 Calc coord yes
Tycho2
Tycho2 6920-01488-1 Pflag RAmdeg 307.73667770 DEmdeg -29.11266267
PmRA 17.4 PmDE -4.5 E RAmdeg 4 E DEmdeg 4
E pmRA 1.3 E pmDE 1.3 EpRAm 1991.47 EpDEm 1991.03
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.2 BTmag 6.609 E BTmag 0.015 VTmag 6.371
E VTmag 0.010 Prox 999 TYC T HIP 101211
CCDM AB RAdeg 307.73663167 DEdeg -29.11265167 EpRA 1990 1.73
EpDE 1990 1.29 E RAdeg 3.6 E DEdeg 4.4 Posflg P
Corr -0.1