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Doubles in session


Current system
19040-3804
I 1391
HD 176891


Nearby doubles
17' : 19026-3800
RST2083

23' : 19056-3754
RST2086

31' : 19065-3808
COO 231

51' : 19079-3825
RST2088

53' : 19031-3713
REP 48

66' : 19051-3908
RST2084

66' : 19043-3659
KOH 116

66' : 19081-3720
UC 3812

67' : 19064-3704
HJ 5084

69' : 19025-3658
KOH 115

70' : 19011-3704
BSO 14AB

71' : 19020-3658
BYJ 1

71' : 19097-3745
KPP1406

71' : 19024-3656
REP 4

72' : 19019-3657
VSP 1

74' : 18578-3802
B 414

75' : 19011-3657
JOY 7

76' : 18598-3707
BOY 15

76' : 19016-3653
B 957AB

77' : 19021-3917
B 420

77' : 18592-3712
WLT 2

79' : 19092-3853
UC 3824

80' : 19005-3656
KOH 112

80' : 18588-3713
I 1114

83' : 18576-3733
KOH 111

84' : 19036-3927
B 421



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.

19040-3804 I 1391 (HD 176891)

 
 
19h 03m 58.43s -38° 04' 02.0" P.A. 124.00 sep 0.3 mag 9.91,9.71 Sp G5V dist. 120.48 pc (393.01 l.y.)
 
 
Coord 2000 19040-3804 Discov num I  1391 Comp Coord arcsec 2000 19 03 58.43 -38 04 02.0
Date first 1926 Date last 2023 Obs 25
Pa first 114 Pa last 123.5 P.A. Now (θ) 128.5° (calc)
Sep first 0.5 Sep last 0.273 Sep. Now (ρ) 0.278" (calc)
Mag pri 9.91 Mag sec 9.71 delta mag (ΔM) 0.2 Spectral class G5V (yellow)
Pri motion ra +005 Sec motion ra
Pri motion dec -038 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 176891 Constellation Corona Austrina SAO 210867 HIP 93625
Tycho2 7917-00132-1 Gaia DR2 6718711044440095232 HD 176891 CD CD-3813306
CP CP-38 7691 Distance 120.48 Distance ly 393.01
 
 
ORBITAL ELEMENTS
 
 
Period (P)48.75y± 0.72 Periastron (T)2003.88y± 0.59 Semi-major axis (a)0.1869a± 0.0022
Eccentricity (e)0.505± 0.028 Inclination (i)52.3°± 2.6 Longitude of periastron (ω)194.7°± 6.1
Node (Ω)123.4°± 3 Notes ReferenceTok2024c
Equinox Last observation Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 250.7 0.089
2001 267.5 0.091
2002 283.4 0.094
2003 298.6 0.094
2004 314.5 0.090
2005 333.1 0.081
2006 356.2 0.073
2007 22.3 0.073
2008 45.8 0.081
2009 63.3 0.097
2010 75.6 0.115
2011 84.4 0.134
2012 91.1 0.152
2013 96.4 0.170
2014 100.7 0.186
2015 104.3 0.201
2016 107.5 0.215
2017 110.3 0.227
2018 112.8 0.237
2019 115.1 0.247
2020 117.3 0.255
2021 119.3 0.262
2022 121.3 0.267
2023 123.1 0.272
2024 125.0 0.275
2025 126.7 0.277
2026 128.5 0.278
2027 130.3 0.277
2028 132.1 0.276
2029 133.9 0.274
2030 135.7 0.270
2031 137.6 0.266
2032 139.6 0.260
2033 141.6 0.253
2034 143.8 0.246
2035 146.1 0.237
2036 148.7 0.228
2037 151.4 0.217
2038 154.4 0.206
2039 157.8 0.194
2040 161.7 0.181
2041 166.2 0.168
2042 171.5 0.154
2043 177.8 0.140
2044 185.6 0.126
2045 195.2 0.113
2046 207.1 0.102
2047 221.4 0.094
2048 237.8 0.089
2049 254.9 0.089
2050 271.6 0.092


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds19040-3804d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 19040-3804 I 1391 (HD 176891) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2024c St+ Tokovinin, A., Mason, B.D., Mendez, R.A. & Costa, E. 2024AJ....168...28T
Tok2024c orb
 
 
DISCOVERER
 
 
discov author
I Innes, R.T.A.
I MNRAS 57, 533, 1897 (data also in I__1897b,
I I__1897c)
TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
TOK Martinez, M., & Mondaca, E.
TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
TOK Tokovinin, A. & Briceno, C.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
19040-3804 I 1391 1991 18 156 0.2 9.91 9.71 G5V -3813306 NO 190358.43-380402.0
19040-3804 I 1391 2009 20 66 0.1 9.91 9.71 G5V -3813306 NO 190358.43-380402.0
19040-3804 I 1391 2014 21 103 0.2 9.91 9.71 G5V -3813306 O 190358.43-380402.0
19040-3804 I 1391 2017 22 111 0.2 9.91 9.71 G5V -3813306 O 190358.43-380402.0
19040-3804 I 1391 2019 23 116 0.3 9.91 9.71 G5V -3813306 O 190358.43-380402.0
19040-3804 I 1391 2021 24 120 0.3 9.91 9.71 G5V -3813306 O 190358.43-380402.0
19040-3804 I 1391 2023 25 124 0.3 9.91 9.71 G5V -3813306 O 190358.43-380402.0

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

 
 
WDS 19040-3804 I 1391 (HD 176891) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19040-3804 I 1391 (HD 176891) : MEASURES
 
 
No records found.

 
 
WDS 19040-3804 (HD 176891) : VIRTUAL EYEPIECE
 
 

19040-3804 I 1391A mag 9.91 Sp G5V 19040-3804 I 1391B sep 0.3 P.A. 123.50 mag 9.71 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 19040-3804 (HD 176891) : ALADIN DSS IMAGE @ 19h 03m 58.43s -38° 04' 02.0"
 
 
 
 
WDS 19040-3804 I 1391 (HD 176891) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19040-3804 I 1391 distance=0' 19026-3800 RST2083 distance=17' 19056-3754 RST2086 distance=23' 19065-3808 COO 231 distance=31' 19079-3825 RST2088 distance=51' 19031-3713 REP 48 distance=53' 19051-3908 RST2084 distance=66' 19043-3659 KOH 116 distance=66' 19081-3720 UC 3812 distance=66' 19064-3704 HJ 5084 distance=67' 19025-3658 KOH 115 distance=69' 19011-3704 KOH 113Aa,Ab distance=70' 19011-3704 BSO 14AB distance=70' 19020-3658 BYJ 1 distance=71' 19097-3745 KPP1406 distance=71' 19024-3656 REP 4 distance=71' 19019-3657 VSP 1 distance=72' 18578-3802 B 414 distance=74' 19011-3657 JOY 7 distance=75' 18598-3707 BOY 15 distance=76' 19016-3653 B 957AB distance=76' 19016-3653 B 957AC distance=76' 19016-3653 CVN 13Ca,Cb distance=77' 19021-3917 B 420 distance=77' 18592-3712 WLT 2 distance=77' 19092-3853 UC 3824 distance=79' 19005-3656 KOH 112 distance=80' 18588-3713 I 1114 distance=80' 18576-3733 KOH 111 distance=83' 19036-3927 B 421 distance=84' 19017-3645 KOH 114 distance=85' 19113-3757 UC 3837 distance=88' 19046-3635 BRT1796 distance=89' 19005-3923 WIS 332 distance=89' 18568-3734 UC 3734 distance=91' 19013-3632 BRT1793 distance=98' 19054-3943 RST2085 distance=101' 19107-3659 KOH 117 distance=104' 19002-3938 UC 3753 distance=104' 18592-3932 HJ 5074 distance=105' 19118-3717 B 2472 distance=105' 19019-3620 B 958 distance=107' 18552-3843 VOU 98AB distance=110' 18552-3843 VOU 98AC distance=110' 19002-3945 WG 240 distance=110' 19075-3622 B 963AB distance=110' 19075-3622 B 963AC distance=110' 18559-3712 UC 3728 distance=110' 18552-3722 UC 3722 distance=112' 19074-3620 UC 3807 distance=112' 18573-3643 WLT 1AB distance=114' 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 19040-3804 I 1391 124 0.3 0
Show 19026-3800 RST2083 21 4.2 17
Show 19056-3754 RST2086 20 4.8 23
Show 19065-3808 COO 231 198 6.2 31
Show 19079-3825 RST2088 306 0.7 51
Show 19031-3713 REP 48 44 2.1 53
Show 19051-3908 RST2084 108 1.7 66
Show 19043-3659 KOH 116 278 0.2 66
Show 19081-3720 UC 3812 271 28.3 66
Show 19064-3704 HJ 5084 316 1.6 67
Show 19025-3658 KOH 115 339 0.2 69
Show 19011-3704 KOH 113 Aa,Ab 99 0.1 70
Show 19011-3704 BSO 14 AB 280 12.8 70
Show 19020-3658 BYJ 1 -1 -1.0 71
Show 19097-3745 KPP1406 181 10.5 71
Show 19024-3656 REP 4 58 4.5 71
Show 19019-3657 VSP 1 134 0.2 72
Show 18578-3802 B 414 208 4.3 74
Show 19011-3657 JOY 7 154 1.3 75
Show 18598-3707 BOY 15 279 0.1 76
Show 19016-3653 B 957 AB 137 4.1 76
Show 19016-3653 B 957 AC 23 57.6 76
Show 19016-3653 CVN 13 Ca,Cb 189 0.3 77
Show 19021-3917 B 420 110 0.5 77
Show 18592-3712 WLT 2 46 2.4 77
Show 19092-3853 UC 3824 171 44.6 79
Show 19005-3656 KOH 112 110 0.1 80
Show 18588-3713 I 1114 279 1.3 80
Show 18576-3733 KOH 111 282 2.9 83
Show 19036-3927 B 421 40 5.4 84
Show 19017-3645 KOH 114 46 0.9 85
Show 19113-3757 UC 3837 16 99.5 88
Show 19046-3635 BRT1796 257 5.4 89
Show 19005-3923 WIS 332 194 999.9 89
Show 18568-3734 UC 3734 32 49.8 91
Show 19013-3632 BRT1793 146 3.0 98
Show 19054-3943 RST2085 124 3.3 101
Show 19107-3659 KOH 117 46 1.3 104
Show 19002-3938 UC 3753 259 49.5 104
Show 18592-3932 HJ 5074 246 16.1 105
Show 19118-3717 B 2472 231 0.9 105
Show 19019-3620 B 958 149 3.9 107
Show 18552-3843 VOU 98 AB 197 2.5 110
Show 18552-3843 VOU 98 AC 262 8.2 110
Show 19002-3945 WG 240 206 5.3 110
Show 19075-3622 B 963 AB 62 3.1 110
Show 19075-3622 B 963 AC 93 20.9 110
Show 18559-3712 UC 3728 335 61.4 110
Show 18552-3722 UC 3722 32 94.9 112
Show 19074-3620 UC 3807 168 18.8 112
Show 18573-3643 WLT 1 AB 306 42.2 114

 
 
WDS 19040-3804 : COMPONENTS
 
 
  A
B pa=123.5°
sep=0.27"
 
 
19040-3804 A
 
 
Name HD 176891 Coord arcsec 2000 190358.43-380402.0 Mag 9.91 Spectral class G5V (yellow)
PmRA 5.00 PmDE -38.0 HIP 93625 CD CD-3813306
CP CP-38 7691
Hipparcos
Catalog H HIP 93625 Proxy H RAhms 19 03 58.43
DEdms -38 04 02.0 Vmag 8.91 VarFlag R Vmag G
RAdeg 285.993 DEdeg -38.0672 AstroRef * Plx 9.89
CCDM 11.74 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP AS
Theta 336 Rho 0.178 HD BD
CD CD-3813306 CP CP-38 7691 Dm number -3813306 VIred 0.72
SpType G5V R SpType Coord arcsec 2000 190358.43-380402.0
Hipparcos 2
HIP 93625 Sn 55 So 3 Nc 2
RArad 4.9915277658 DErad -0.6643983867 Plx 8.3 PmRA 11.6
PmDE -31.35 E RArad 1.39 E DErad 0.87 E Plx 1.5
E pmRA 2.67 E pmDE 1.47 Hpmag E Hpmag 0.0031
SHp 0.02 VA 0 BV 0.66 E BV 0.015
VI 0.72
CCDM
Ccdm 19040-3804 RComp Comp A Note1
Note2 Discov num DRAs -1.64 DDEs -4.1
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.6 Sp G0 PmNote *
PmRA -2 PmDE -54 Dm number -3813306 Cat1 CD
Name2 210867 Cat2 SAO HD 176891 M HD
ADS BDS M ADS BDS N IDS IDS 18572S3813A
HIC 93625
 
 
19040-3804 B
 
 
Coord arcsec 2000 190358.45-380402.2 Mag 9.71 SAO 187627 Tycho2 7917-00132-1
HD 176891 DM CD-2815314 Delta magnitude 0.2 Coordinate calculated yes
Tycho2
Tycho2 7917-00132-1 Pflag RAmdeg 285.99352104 DEmdeg -38.06729011
PmRA 13.7 PmDE -28.4 E RAmdeg 11 E DEmdeg 16
E pmRA 1.7 E pmDE 1.6 EpRAm 1991.25 EpDEm 1990.30
Num 10 Q RAmdeg 1.2 Q DEmdeg 0.9 Q pmRA 1.2
Q pmDE 1.0 BTmag 9.749 E BTmag 0.027 VTmag 9.046
E VTmag 0.021 Prox 999 TYC T HIP 93625
CCDM AS RAdeg 285.99348083 DEdeg -38.06722361 EpRA 1990 1.85
EpDE 1990 1.64 E RAdeg 10.6 E DEdeg 16.3 Posflg P
Corr 0.1
SAO
SAO 187627 DelFlag RA1950 PmRA1950 0.0115
DE1950 PmDE1950 0.044 Vmag 9 SpType K0
Double code Source 24 CatNum 12440 DM CD-2815314
DMcomp BDsup HD 177033 M HD 0
GC RA1950rad 4.97839585 DE1950rad -0.49355128 PmRA2000 0.0114
PmDE2000 0.044
CCDM
Ccdm 19040-3804 RComp Comp B Note1 *
Note2 Discov num I 1391 DRAs DDEs
R dRAs Year 1959 Theta 215 Rho 0.1
Obs 11 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18572S3813B
HIC 93625