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Doubles in session


Current system
02514-2139
DON 43
HD 17884


Nearby doubles
14' : 02512-2125
I 461

23' : 02518-2117
SEE 21

36' : 02501-2210
DON 42

39' : 02510-2100
SEE 20
Angetenar

49' : 02513-2226
LDS3433

54' : 02546-2109
KPP1712

57' : 02476-2115
RST2287

70' : 02482-2232
RST2288

77' : 02472-2229
SKF2167AB

87' : 02498-2015
HJ 3533

88' : 02532-2014
ARA 833

99' : 02464-2250
SKF2166

102' : 02544-2007
HDS 371

103' : 02441-2125
KPP2029

106' : 02502-2323
RST2289

114' : 02528-2330
I 717

119' : 02432-2108
LDS3420

123' : 03001-2157
DVG 15

123' : 02437-2240
RST2286

124' : 02456-2004
DON 40

132' : 02578-2317
ARA1971

133' : 02573-2323
I 149

134' : 02474-2341
HU 1561

143' : 02430-2017
HJ 3524

144' : 03017-2136
RST2291

145' : 02586-2322
UC 922



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.

02514-2139 DON 43 (HD 17884)

 
 
02h 51m 21.23s -21° 38' 40.9" P.A. 290.00 sep 0.2 mag 9.80,10.00 Sp F2+F4
 
 
Coord 2000 02514-2139 Discov num DON  43 Comp Coord arcsec 2000 02 51 21.23 -21 38 40.9
Date first 1930 Date last 2022 Obs 16
Pa first 334 Pa last 290.4 P.A. Now (θ) 296° (calc)
Sep first 0.2 Sep last 0.21 Sep. Now (ρ) 0.212" (calc)
Mag pri 9.80 Mag sec 10.00 delta mag (ΔM) 0.2 Spectral class F2+F4 (yellow-white/yellow-white)
Pri motion ra +073 Sec motion ra
Pri motion dec -001 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 17884 Constellation Eridanus Tycho2 5870-00612-1 HD 17884
 
 
ORBITAL ELEMENTS
 
 
Period (P)121.5y± 5.8 Periastron (T)1984.7y± 6.8 Semi-major axis (a)0.201a± 0.011
Eccentricity (e)0.415± 0.049 Inclination (i)39.2°± 5.9 Longitude of periastron (ω)97.1°± 11.4
Node (Ω)51.7°± 23.9 Notesn ReferenceTok2023a
Equinox2000 Last observation2022 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 238.7 0.168
2001 241.7 0.172
2002 244.5 0.175
2003 247.2 0.179
2004 249.8 0.182
2005 252.3 0.185
2006 254.7 0.187
2007 257.1 0.190
2008 259.4 0.192
2009 261.7 0.194
2010 263.9 0.196
2011 266.1 0.197
2012 268.2 0.199
2013 270.4 0.200
2014 272.5 0.202
2015 274.5 0.203
2016 276.5 0.204
2017 278.6 0.205
2018 280.6 0.206
2019 282.5 0.207
2020 284.5 0.208
2021 286.4 0.209
2022 288.4 0.209
2023 290.3 0.210
2024 292.2 0.211
2025 294.1 0.211
2026 296.0 0.212
2027 297.8 0.213
2028 299.7 0.213
2029 301.6 0.214
2030 303.4 0.214
2031 305.2 0.215
2032 307.1 0.215
2033 308.9 0.216
2034 310.7 0.216
2035 312.5 0.217
2036 314.3 0.217
2037 316.0 0.218
2038 317.8 0.218
2039 319.6 0.219
2040 321.4 0.219
2041 323.1 0.220
2042 324.9 0.220
2043 326.6 0.220
2044 328.3 0.221
2045 330.1 0.221
2046 331.8 0.222
2047 333.5 0.222
2048 335.2 0.223
2049 336.9 0.223
2050 338.6 0.223


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds02514-2139d.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic