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Current system
19167-4553
RST 4036
HD 179930


Nearby doubles
15' : 19179-4547
TDT1359

26' : 19164-4528
HDS2726

29' : 19174-4525
B 967

38' : 19203-4551
I 1398

39' : 19158-4516
KPP1371

43' : 19203-4533
UC 3890

43' : 19178-4512
SKF1156

45' : 19164-4638
TDT1337

52' : 19124-4528
UC 3845

52' : 19216-4545
TDS 984

61' : 19141-4647
UC 3857

64' : 19220-4522
SKF1089

66' : 19114-4520
UC 3839

75' : 19108-4635
BRT1091

76' : 19111-4506
UC 3835

77' : 19240-4557
I 116AB

77' : 19094-4552
TDT1258

78' : 19219-4459
SKF1088

87' : 19164-4720
UC 3872

88' : 19091-4630
RST1023

89' : 19252-4555
UC 3927

93' : 19139-4722
HJ 5092

94' : 19117-4711
HDS2719

95' : 19119-4434
UC 3841

101' : 19074-4533
UC 3808

103' : 19261-4526
UC 3933



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

19167-4553 RST 4036 (HD 179930)

 
 
19h 16m 42.89s -45° 53' 21.0" P.A. 89.00 sep 0.2 mag 10.20,10.20 Sp K5/M0V dist. 16.1 pc (52.52 l.y.)
 
 
Coord 2000 19167-4553 Discov num RST4036 Comp Coord arcsec 2000 19 16 42.89 -45 53 21.0
Date first 1929 Date last 2023 Obs 29
Pa first 168 Pa last 88.9 P.A. Now (θ) 19.6°
Sep first 0.3 Sep last 0.169 Sep. Now (ρ) 0.201"
Mag pri 10.20 Mag sec 10.20 delta mag (ΔM) 0 Spectral class K5/M0V (yellow-orange)
Pri motion ra +220 Sec motion ra
Pri motion dec -421 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 179930 Constellation Telescopium HIP 94739 Tycho2 8375-01985-1
HD 179930 CD CD-4612902 CP CP-46 9672 Distance 16.1
Distance ly 52.52
 
 
ORBITAL ELEMENTS
 
 
Period (P)7.68y Periastron (T)1995.057y Semi-major axis (a)0.244a
Eccentricity (e)0.263 Inclination (i)124.7° Longitude of periastron (ω)241°
Node (Ω)200.2° Notesn ReferenceUSN2019
Equinox2000 Last observation2019 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 104.2 0.167
2001 54.7 0.194
2002 18.1 0.199
2003 302.9 0.106
2004 218.5 0.206
2005 192.9 0.271
2006 171.0 0.248
2007 138.4 0.189
2008 86.7 0.170
2009 42.4 0.206
2010 3.9 0.173
2011 261.4 0.119
2012 208.5 0.238
2013 186.2 0.271
2014 162.4 0.230
2015 123.4 0.174
2016 70.5 0.179
2017 31.1 0.209
2018 343.2 0.136
2019 235.2 0.159
2020 200.7 0.259
2021 179.4 0.264
2022 152.3 0.210
2023 106.4 0.167
2024 56.3 0.193
2025 19.6 0.201
2026 308.3 0.107
2027 220.0 0.201
2028 193.7 0.270
2029 172.0 0.250
2030 140.1 0.191
2031 88.8 0.169
2032 43.9 0.204
2033 6.0 0.177
2034 265.9 0.115
2035 209.6 0.235
2036 187.0 0.272
2037 163.6 0.233
2038 125.4 0.176
2039 72.4 0.178
2040 32.5 0.209
2041 346.4 0.141
2042 237.7 0.154
2043 201.6 0.257
2044 180.3 0.265
2045 153.7 0.213
2046 108.6 0.168
2047 58.0 0.191
2048 21.1 0.203
2049 313.6 0.109
2050 221.5 0.196


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds19167-4553c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic