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Current system
21187-6121
NSN 446
HD 202457


Nearby doubles
40' : 21190-6200
TDT2898

64' : 21239-6213
LDS 740

65' : 21200-6018
HJ 5256AB

68' : 21253-6209
B 526

69' : 21190-6013
R 328

71' : 21129-6218
TDT2830

80' : 21295-6103
B 529

80' : 21256-6019
TDT2954

86' : 21231-6002
TDT2935

90' : 21262-6233
TDT2965

91' : 21126-6003
I 258

94' : 21224-5952
RST5160

96' : 21188-5946
KPP3072

98' : 21271-6239
CTI9698

101' : 21304-6028
HU 1630

102' : 21299-6020
UC 4477

104' : 21297-6016
R 332

108' : 21335-6144
B 531AB

110' : 21304-6012
HJ 5270

117' : 21329-6026
UC 4493

129' : 21238-5918
RST5163

130' : 21144-5916
TDT2848

131' : 21302-5942
B 1391

136' : 21120-5916
B 518

137' : 21278-5922
TOK 731

138' : 21295-6316
TDT2994



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.

21187-6121 NSN 446 (HD 202457)

 
 
21h 18m 44.38s -61° 21' 09.8" P.A. 334.00 sep 4.0 mag 7.65,11.91 dist. 31.73 pc (103.5 l.y.)
 
 
Coord 2000 21187-6121 Discov num NSN 446 Comp Coord arcsec 2000 21 18 44.38 -61 21 09.8
Date first 2015 Date last 2016 Obs 3
Pa first 333 Pa last 333.5 P.A. Now (θ) 333.5°
Sep first 4.0 Sep last 3.96 Sep. Now (ρ) 3.96"
Mag pri 7.65 Mag sec 11.91 delta mag (ΔM) 4.26 Spectral class
Pri motion ra +453 Sec motion ra +474
Pri motion dec -438 Sec motion dec -423
Notes T (Parallax indicates physical)
rPM=0.041 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 202457 Spectr G5V Constellation Pavo SAO 254970
HIP 105214 Tycho2 9102-01092-1 HD 202457 GC 29770
GL Gl 825.1 CD CD-61 6571 CP CP-61 6537 Distance 31.73
Distance ly 103.5
 
 
WDS 21187-6121 NSN 446 (HD 202457) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Nsn2013 M+ w Nanson, J., McGaughey, S. & Armstrong, J.D. 2013JDSO....9..267N
Nsn2013 +C JDSO 9, 267, 2013
Nsn2014 C u Nanson, J. & Smith, S.C. 2014JDSO...10..139N
Nsn2014 JDSO 10, 139, 2014
Nsn2015 C - Nanson, J., Smith, S.C. & Thuemen, C. 2015JDSO...11...12N
Nsn2015 JDSO 11, 12, 2015
Nsn2016 not - Nanson, J. ...................
Nsn2016 private communication, 2016
Nsn2016b C j Nanson, J. & Knapp, W.R.A. 2016JDSO...12..450N
Nsn2016b JDSO 12, 450, 2016
Nsn2016c not - Nanson, J. 2016JDSO...12..573N
Nsn2016c JDSO 12, 573, 2016
Nsn2017a not - Nanson, J. ...................
Nsn2017a private communication, 2017
Nsn2017b not - Nanson, J. ...................
Nsn2017b private communication, 2017
Nsn2017c C j Nanson, J. & Knapp, W.R.A. 2017JDSO...13..299N
Nsn2017c +E+ JDSO 13, 299, 2017
Nsn2017c +Hg
Nsn2017d not - Nanson, J. ...................
Nsn2017d private communication, 2017
Nsn2017e not - Nanson, J. & Knapp, W. ...................
Nsn2017e private communication, 2017
Nsn2018a Hg j Nanson, J. ...................
Nsn2018a private communication, 2018 (15 February 2018 email)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21187-6121 NSN 446 2015 2 333 4.0 7.65 11.91 T 211844.38-612109.8
21187-6121 NSN 446 2016 3 334 4.0 7.65 11.91 T 211844.38-612109.8

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

 
 
WDS 21187-6121 NSN 446 (HD 202457) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21187-6121 NSN 446 (HD 202457) : MEASURES
 
 
No records found.

 
 
WDS 21187-6121 (HD 202457) : VIRTUAL EYEPIECE
 
 

21187-6121 NSN 446A mag 7.65 Sp G5V 21187-6121 NSN 446B sep 3.6 P.A. 346.60 mag 11.91 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 21187-6121 (HD 202457) : ALADIN DSS IMAGE @ 21h 18m 44.38s -61° 21' 09.8"
 
 
 
 
WDS 21187-6121 NSN 446 (HD 202457) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21187-6121 NSN 446 distance=0' 21190-6200 TDT2898 distance=40' 21239-6213 LDS 740 distance=64' 21200-6018 HJ 5256AB distance=65' 21200-6018 BAU 66AC distance=65' 21200-6018 BAU 66AD distance=65' 21253-6209 B 526 distance=68' 21190-6013 R 328 distance=69' 21129-6218 TDT2830 distance=71' 21295-6103 B 529 distance=80' 21256-6019 TDT2954 distance=80' 21231-6002 TDT2935 distance=86' 21262-6233 TDT2965 distance=90' 21126-6003 I 258 distance=91' 21224-5952 RST5160 distance=94' 21188-5946 KPP3072 distance=96' 21271-6239 CTI9698 distance=98' 21304-6028 HU 1630 distance=101' 21299-6020 UC 4477 distance=102' 21297-6016 R 332 distance=104' 21335-6144 B 531AB distance=108' 21335-6144 BAU 67AC distance=108' 21304-6012 HJ 5270 distance=110' 21329-6026 UC 4493 distance=117' 21334-6024 TVB 320BC distance=121' 21238-5918 RST5163 distance=129' 21144-5916 TDT2848 distance=130' 21302-5942 B 1391 distance=131' 21120-5916 B 518 distance=136' 21278-5922 TOK 731 distance=137' 21295-6316 TDT2994 distance=138' 21153-6341 HJ 5250 distance=143' 21323-5936 HU 1631 distance=146' 21315-6323 KPP1507 distance=151' 21292-6334 TDT2989 distance=151' 21190-5849 HU 1628 distance=153' 21254-5856 B 527 distance=154' 21132-6354 UC 4408 distance=158' 21357-5942 TOK 732 distance=160' 21186-6406 UC 4438 distance=165' 21129-6407 RSS 555 distance=171' 21293-5849 TDT2990 distance=172' 21143-5831 B 519 distance=174' 21366-6340 TDT3059 distance=186' 21328-6403 TDT3023 distance=189' 21146-6429 UC 4419 distance=190' 21061-6411 TDT2746 distance=191' 21379-6343 NSN 441 distance=194' 21365-6358 TDT3056 distance=199' 21173-5758 NSN 447 distance=204' 21222-6445 RST1088 distance=206' 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 21187-6121 NSN 446 334 4.0
Show 21190-6200 TDT2898 347 0.6 40
Show 21239-6213 LDS 740 31 14.1 64
Show 21200-6018 HJ 5256 AB 148 17.6 65
Show 21200-6018 BAU 66 AC 139 29.6 65
Show 21200-6018 BAU 66 AD 271 49.4 65
Show 21253-6209 B 526 122 0.6 68
Show 21190-6013 R 328 298 21.0 69
Show 21129-6218 TDT2830 152 2.3 71
Show 21295-6103 B 529 272 0.6 80
Show 21256-6019 TDT2954 117 0.5 80
Show 21231-6002 TDT2935 206 1.4 86
Show 21262-6233 TDT2965 355 2.0 90
Show 21126-6003 I 258 154 0.6 91
Show 21224-5952 RST5160 263 5.7 94
Show 21188-5946 KPP3072 268 2.0 96
Show 21271-6239 CTI9698 336 3.5 98
Show 21304-6028 HU 1630 232 2.7 101
Show 21299-6020 UC 4477 320 16.7 102
Show 21297-6016 R 332 332 13.4 104
Show 21335-6144 B 531 AB 325 3.4 108
Show 21335-6144 BAU 67 AC 60 50.7 108
Show 21304-6012 HJ 5270 46 27.7 110
Show 21329-6026 UC 4493 128 10.1 117
Show 21334-6024 TVB 320 BC 348 9.6 121
Show 21238-5918 RST5163 181 1.5 129
Show 21144-5916 TDT2848 118 2.2 130
Show 21302-5942 B 1391 236 1.2 131
Show 21120-5916 B 518 141 0.3 136
Show 21278-5922 TOK 731 238 0.0 137
Show 21295-6316 TDT2994 106 0.7 138
Show 21153-6341 HJ 5250 304 9.6 143
Show 21323-5936 HU 1631 195 1.0 146
Show 21315-6323 KPP1507 45 11.4 151
Show 21292-6334 TDT2989 78 1.9 151
Show 21190-5849 HU 1628 245 1.0 153
Show 21254-5856 B 527 248 4.9 154
Show 21132-6354 UC 4408 165 21.4 158
Show 21357-5942 TOK 732 189 0.7 160
Show 21186-6406 UC 4438 227 9.1 165
Show 21129-6407 RSS 555 95 8.2 171
Show 21293-5849 TDT2990 359 0.6 172
Show 21143-5831 B 519 29 0.6 174
Show 21366-6340 TDT3059 60 2.3 186
Show 21328-6403 TDT3023 1 0.8 189
Show 21146-6429 UC 4419 176 55.6 190
Show 21061-6411 TDT2746 330 0.4 191
Show 21379-6343 NSN 441 198 2.2 194
Show 21365-6358 TDT3056 55 0.7 199
Show 21173-5758 NSN 447 123 6.9 204
Show 21222-6445 RST1088 252 1.4 206

 
 
WDS 21187-6121 : COMPONENTS
 
 
  A
B pa=346.6°
sep=3.64"
 
 
21187-6121 A
 
 
Componente originario normalizzato AB Name HD 202457 Coord arcsec 2000 211844.38-612109.8 Mag 7.65
Spectral class G5V (yellow) PmRA 453.00 PmDE -438.0 SAO 254970
HIP 105214 Tycho2 9102-01092-1 HD 202457 GC 29770
CD CD-61 6571 CP CP-61 6537
Tycho2
Tycho2 9102-01092-1 Pflag RAmdeg 319.68465593 DEmdeg -61.35277169
PmRA 486.2 PmDE -431.3 E RAmdeg 4 E DEmdeg 3
E pmRA 1.5 E pmDE 1.5 EpRAm 1991.34 EpDEm 1991.53
Num 11 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.7
Q pmDE 1.1 BTmag 7.450 E BTmag 0.014 VTmag 6.666
E VTmag 0.009 Prox 999 TYC T HIP 105214
CCDM RAdeg 319.68226139 DEdeg -61.35176750 EpRA 1990 1.50
EpDE 1990 1.62 E RAdeg 3.5 E DEdeg 3.3 Posflg
Corr 0.1
SAO
SAO 254970 DelFlag RA1950 PmRA1950 0.0671
DE1950 PmDE1950 -0.431 Vmag 6.7 SpType G0
Double code Source 70 CatNum 29770 DM CP-61 6537
DMcomp BDsup HD 202457 M HD 0
GC 29770 RA1950rad 5.56227943 DE1950rad -1.07438038 PmRA2000 0.0662
PmDE2000 -0.431
Hipparcos
Catalog H HIP 105214 Proxy RAhms 21 18 43.73
DEdms -61 21 06.2 Vmag 6.6 VarFlag R Vmag G
RAdeg 319.682 DEdeg -61.3517 AstroRef Plx 32.1
CCDM N CCDM Nsys Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 202457 BD
CD CD-61 6571 CP CP-61 6537 Dm number -61 6571 VIred 0.73
SpType G5V R SpType Coord arcsec 2000 211843.73-612106.2
Hipparcos 2
HIP 105214 Sn 1 So 1 Nc 1
RArad 5.5795068521 DErad -1.070789527 Plx 31.52 PmRA 473.06
PmDE -447.18 E RArad 0.27 E DErad 0.36 E Plx 0.67
E pmRA 0.38 E pmDE 0.45 Hpmag 6.7293 E Hpmag 0.0006
SHp 0.009 VA 0 BV 0.689 E BV 0.008
VI 0.73
 
 
21187-6121 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 211844.26-612106.3 Mag 11.91 PmRA 474.00
PmDE -423.0 Calc delta mag 4.26 Calc coord yes