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Doubles in session


Current system
18055-6312
RST 959 Aa,Ab


Nearby doubles
4' : 18059-6314
RST 960

26' : 18048-6246
KPP4080

35' : 18005-6306
UC 3471

39' : 18001-6259
UC 3468

40' : 18001-6326
TDT 624

40' : 18013-6339
KPP 408

41' : 18081-6236
UC 3501

51' : 18021-6227
I 618AB

52' : 17593-6342
TDT 612

53' : 18083-6222
KPP3099

61' : 17585-6350
RST 954

62' : 17565-6302
SWR 233

63' : 18123-6355
RST5601AB

66' : 18143-6341
HDO9002

69' : 17555-6259
HJ 4985

70' : 17580-6359
TDT 600

70' : 18157-6303
HJ 5024

71' : 18007-6210
HJ 4996

73' : 17551-6331
UC 3445

76' : 18106-6205
UC 3518

76' : 18106-6206
LDS 625

80' : 17547-6244
UC 3442

81' : 18157-6233
B 1880AB

82' : 18091-6154
LDS 624

82' : 17578-6210
B 2423

87' : 18125-6200
LDS 626



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.

18055-6312 RST 959 Aa,Ab

 
 
18h 05m 30.73s -63° 11' 39.1" P.A. 105.00 sep 0.4 mag 8.30,9.08 Sp G5V dist. 72.83 pc (237.57 l.y.)
 
 
Coord 2000 18055-6312 Discov num RST 959 Comp Aa,Ab Coord arcsec 2000 18 05 30.73 -63 11 39.1
Date first 1929 Date last 2019 Obs 8
Pa first 117 Pa last 104.5 P.A. Now (θ) 104.5°
Sep first 0.3 Sep last 0.368 Sep. Now (ρ) 0.368"
Mag pri 8.30 Mag sec 9.08 delta mag (ΔM) 0.78 Spectral class G5V (yellow)
Pri motion ra -027 Sec motion ra -027
Pri motion dec -087 Sec motion dec -087
Notes O (Orbital solution)
This double is physical.
 
 
18055-6312 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 254132 18 05 31 -63 11 39 RST 959 Aa,Ab 2019 8 105 0.4 8.30 9.08 0.78 Y <===
Show HD 164444 254132 18 05 31 -63 11 39 UC 3491 AB 2015 3 138 44.1 8.30 12.12 3.82
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Pavo SAO 254132 HIP 88607 Tycho2 9059-00705-1
Gaia DR2 6630829622654095872 HD 164444 CP CP-63 4275 Distance 72.83
Distance ly 237.57
 
 
ORBITAL ELEMENTS
 
 
Period (P)94.7y± 2.3 Periastron (T)2046.38y± 1.5 Semi-major axis (a)0.348a± 0.006
Eccentricity (e)0.234± 0.019 Inclination (i)20°± 0 Longitude of periastron (ω)0°± 0
Node (Ω)232.3°± 3.2 Notes ReferenceTok2021c
Equinox2000 Last observation2020 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 54.5 0.429
2001 56.8 0.429
2002 59.1 0.428
2003 61.4 0.427
2004 63.7 0.425
2005 66.0 0.424
2006 68.4 0.422
2007 70.8 0.419
2008 73.2 0.417
2009 75.6 0.414
2010 78.1 0.410
2011 80.6 0.407
2012 83.2 0.403
2013 85.8 0.399
2014 88.5 0.394
2015 91.2 0.390
2016 94.0 0.385
2017 96.9 0.380
2018 99.8 0.375
2019 102.9 0.370
2020 106.0 0.364
2021 109.2 0.358
2022 112.6 0.353
2023 116.0 0.347
2024 119.5 0.341
2025 123.2 0.335
2026 127.0 0.330
2027 131.0 0.324
2028 135.1 0.318
2029 139.3 0.313
2030 143.7 0.308


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


 
  


wds18055-6312a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 18055-6312 RST 959 Aa,Ab : 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 RST Rossiter, R.A.
14 UC USNO CCD Astrographic Catalog (UCAC1, UCAC2, UCAC3, UCAC4)
14 UC Zacharias, N., Finch, C.T., Girard, T.M., Henden, A., Bartlett, J.L., Monet, D.G.,
14 UC & Zacharias, M.I. (UCAC4 Catalog)
25 UC Zacharias, N., Finch, C.T., Subasavage, J.P., Bredthauer, G., Crockett, C.,
25 UC DiVittorio, M., Ferguson, E., Harris, F., Harris, H.C., Hendon, A., Kilian, C.,
25 UC Munn, J., Rafferty, T., Rhodes, A., Schultheis, M., Tilleman, T., & Wieder, G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18055-6312 RST 959 Aa,Ab 1991 7 35 0.4 8.30 9.08 G5V D 180530.73-631139.1
18055-6312 RST 959 Aa,Ab 2019 8 105 0.4 8.30 9.08 G5V 180530.73-631139.1

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

 
 
WDS 18055-6312 RST 959 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18055-6312 RST 959 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18055-6312 : VIRTUAL EYEPIECE
 
 

18055-6312 UC 3491A mag 8.3 Sp G5V 18055-6312 RST 959Ab sep 0.2 P.A. 119.80 mag 9.08 18055-6312 UC 3491B sep 35.3 P.A. 157.80 mag 12.12 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 18055-6312 : ALADIN DSS IMAGE @ 18h 05m 30.73s -63° 11' 39.1"
 
 
 
 
WDS 18055-6312 RST 959 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18055-6312 RST 959Aa,Ab distance=0' 18059-6314 RST 960 distance=4' 18048-6246 KPP4080 distance=26' 18005-6306 UC 3471 distance=35' 18001-6259 UC 3468 distance=39' 18001-6326 TDT 624 distance=40' 18013-6339 KPP 408 distance=40' 18081-6236 UC 3501 distance=41' 18021-6227 I 618AB distance=51' 18021-6227 I 618AC distance=51' 17593-6342 TDT 612 distance=52' 18083-6222 KPP3099 distance=53' 17585-6350 RST 954 distance=61' 17565-6302 SWR 233 distance=62' 18123-6355 RST5601AB distance=63' 18143-6341 HDO9002 distance=66' 17555-6259 HJ 4985 distance=69' 17580-6359 TDT 600 distance=70' 18157-6303 HJ 5024 distance=70' 18007-6210 HJ 4996 distance=71' 17551-6331 UC 3445 distance=73' 18106-6205 UC 3518 distance=76' 18106-6206 LDS 625 distance=76' 17547-6244 UC 3442 distance=80' 18157-6233 B 1880AB distance=81' 18157-6233 LDS 628AB,C distance=81' 18091-6154 LDS 624 distance=82' 17578-6210 B 2423 distance=82' 18125-6200 LDS 626 distance=87' 18086-6436 KPP 755 distance=88' 18089-6437 HDS2559 distance=89' 18150-6206 RSS 480 distance=94' 18191-6257 UC 3552 distance=94' 18004-6142 RSS 466 distance=97' 17508-6320 UC 3425 distance=100' 17589-6443 UC 3462 distance=102' 17556-6156 UC 3448 distance=102' 18197-6353 I 249 distance=104' 18020-6455 FIN 303 distance=107' 17514-6226 JAW 44 distance=108' 18045-6124 SWR 235 distance=108' 18007-6459 UC 3472 distance=112' 18147-6138 I 628 distance=114' 17562-6137 RST5095 distance=115' 17486-6256 B 1867 distance=116' 17542-6143 JSP 738 distance=119' 17515-6426 RST5443 distance=120' 17565-6457 TDT 586 distance=121' 17528-6439 UC 3439 distance=122' 18083-6512 UC 3503 distance=122' 17502-6422 UC 3422 distance=124' 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 18055-6312 RST 959 Aa,Ab 105 0.4
Show 18055-6312 UC 3491 AB 138 44.1
Show 18059-6314 RST 960 331 1.8 4
Show 18048-6246 KPP4080 57 3.9 26
Show 18005-6306 UC 3471 86 36.8 35
Show 18001-6259 UC 3468 317 25.7 39
Show 18001-6326 TDT 624 244 0.9 40
Show 18013-6339 KPP 408 81 4.7 40
Show 18081-6236 UC 3501 252 83.4 41
Show 18021-6227 I 618 AB 353 3.2 51
Show 18021-6227 I 618 AC 34 23.5 51
Show 17593-6342 TDT 612 268 0.4 52
Show 18083-6222 KPP3099 262 23.4 53
Show 17585-6350 RST 954 180 0.6 61
Show 17565-6302 SWR 233 142 31.9 62
Show 18123-6355 RST5601 AB 21 3.2 63
Show 18143-6341 HDO9002 193 19.3 66
Show 17555-6259 HJ 4985 257 22.8 69
Show 17580-6359 TDT 600 267 1.7 70
Show 18157-6303 HJ 5024 12 45.5 70
Show 18007-6210 HJ 4996 249 5.9 71
Show 17551-6331 UC 3445 317 56.7 73
Show 18106-6205 UC 3518 349 14.9 76
Show 18106-6206 LDS 625 332 25.4 76
Show 17547-6244 UC 3442 238 23.7 80
Show 18157-6233 B 1880 AB 249 4.4 81
Show 18157-6233 LDS 628 AB,C 311 662.4 81
Show 18091-6154 LDS 624 90 19.3 82
Show 17578-6210 B 2423 31 0.3 82
Show 18125-6200 LDS 626 217 186.6 87
Show 18086-6436 KPP 755 319 6.6 88
Show 18089-6437 HDS2559 304 0.9 89
Show 18150-6206 RSS 480 160 10.3 94
Show 18191-6257 UC 3552 153 26.3 94
Show 18004-6142 RSS 466 90 6.1 97
Show 17508-6320 UC 3425 145 8.2 100
Show 17589-6443 UC 3462 48 35.9 102
Show 17556-6156 UC 3448 21 47.2 102
Show 18197-6353 I 249 349 7.9 104
Show 18020-6455 FIN 303 81 0.4 107
Show 17514-6226 JAW 44 231 30.8 108
Show 18045-6124 SWR 235 82 15.2 108
Show 18007-6459 UC 3472 91 80.9 112
Show 18147-6138 I 628 61 1.9 114
Show 17562-6137 RST5095 255 3.1 115
Show 17486-6256 B 1867 43 5.0 116
Show 17542-6143 JSP 738 144 0.3 119
Show 17515-6426 RST5443 42 1.3 120
Show 17565-6457 TDT 586 296 0.7 121
Show 17528-6439 UC 3439 312 47.1 122
Show 18083-6512 UC 3503 86 41.0 122

 
 
WDS 18055-6312 : COMPONENTS
 
 
  A Ab
Ab pa=119.8°
sep=0.19"
 
B pa=157.8°
sep=35.26"
pa=157.9°
sep=35.12"
 
 
18055-6312 A
 
 
Name HD 164444 Coord arcsec 2000 180530.73-631139.1 Mag 8.3 Spectral class G5V (yellow)
PmRA -30.00 PmDE -87.0 SAO 254132 HIP 88607
Tycho2 9059-00705-1 HD 164444 CP CP-63 4275
Tycho2
Tycho2 9059-00705-1 Pflag RAmdeg 271.37809606 DEmdeg -63.19415362
PmRA -27.0 PmDE -87.0 E RAmdeg 5 E DEmdeg 5
E pmRA 1.6 E pmDE 1.6 EpRAm 1991.34 EpDEm 1991.36
Num 9 Q RAmdeg 1.4 Q DEmdeg 0.4 Q pmRA 1.5
Q pmDE 0.5 BTmag 8.607 E BTmag 0.016 VTmag 7.932
E VTmag 0.011 Prox 999 TYC T HIP 88607
CCDM AS RAdeg 271.37823389 DEdeg -63.19395417 EpRA 1990 1.73
EpDE 1990 1.75 E RAdeg 5.1 E DEdeg 5.3 Posflg P
Corr -0.1
SAO
SAO 254132 DelFlag RA1950 PmRA1950 -0.0028
DE1950 PmDE1950 -0.102 Vmag 7.9 SpType G0
Double code Source 43 CatNum 5461 DM CP-63 4275
DMcomp BDsup HD 164444 M HD 0
GC RA1950rad 4.71565701 DE1950rad -1.10299006 PmRA2000 -0.0038
PmDE2000 -0.103
Hipparcos
Catalog H HIP 88607 Proxy H RAhms 18 05 30.77
DEdms -63 11 38.3 Vmag 7.82 VarFlag R Vmag G
RAdeg 271.378 DEdeg -63.194 AstroRef A Plx 13.1
CCDM 18055-6312 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AS
Theta 33 Rho 0.418 HD 164444 BD
CD CP CP-63 4275 Dm number -63 4275 VIred 0.69
SpType G5V R SpType Coord arcsec 2000 180530.77-631138.3
Hipparcos 2
HIP 88607 Sn 15 So 3 Nc 2
RArad 4.7364429792 DErad -1.1029430125 Plx 13.73 PmRA -31.4
PmDE -80.36 E RArad 0.81 E DErad 0.74 E Plx 1.07
E pmRA 0.92 E pmDE 0.71 Hpmag 7.9492 E Hpmag 0.0016
SHp 0.014 VA 0 BV 0.619 E BV 0.001
VI 0.69
CCDM
Ccdm 18055-6312 RComp Comp A Note1
Note2 Discov num DRAs 0.79 DDEs 20.5
R dRAs 10 Year Theta Rho
Obs 2 Vmag 8.3 Sp G0 PmNote *
PmRA -19 PmDE -102 Dm number -63 4275 Cat1 CPD
Name2 254132 Cat2 SAO HD 164444 M HD
ADS BDS M ADS BDS N IDS IDS 17560S6312A
HIC 88607
 
 
18055-6312 Ab
 
 
Coord arcsec 2000 180530.75-631139.2 Mag 9.08 PmRA -27.00 PmDE -87.0
Calc delta mag 0.78 Calc coord yes
 
 
18055-6312 B
 
 
Coord arcsec 2000 180532.70-631211.7 Mag 12.12 PmRA -36.00 PmDE -99.0
Calc delta mag 3.82 Calc coord yes
CCDM
Ccdm 18055-6312 RComp Comp B Note1
Note2 Discov num RST 959 DRAs DDEs
R dRAs Year 1929 Theta 117 Rho 0.3
Obs 1 Vmag 8.6 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17560S6312B
HIC 88607