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Doubles in session


Current system
07166+0920
A 2854 AB
HD 56225


Nearby doubles
5' : 07168+0922
STF1058

17' : 07176+0918
STT 170AB

17' : 07175+0913
A 2857

23' : 07181+0919
J 2807

26' : 07168+0855
TDS4662

28' : 07182+0906
TDS4690

28' : 07156+0944
TDS4636

34' : 07151+0859
J 2795

35' : 07143+0923
J 2456

37' : 07151+0851
A 2850

40' : 07172+0959
TDS4675

43' : 07150+0956
J 2457

44' : 07188+0948
TDS4702

46' : 07184+0844
TDS4696AB

48' : 07147+1000
A 2849

55' : 07153+1012
BRT2134

59' : 07182+0826
J 729

66' : 07208+0939
A 2939

69' : 07212+0921
J 1060

70' : 07191+1019
LSC 44

70' : 07210+0855
GWP 897

71' : 07119+0907
XMI 48

73' : 07126+0950
HJ 752

74' : 07214+0908
A 2940

79' : 07181+1035
HEI 725

81' : 07111+0918
TDS4558



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.

07166+0920 A 2854 AB (HD 56225)

 
 
07h 16m 34.15s +09° 20' 11.8" P.A. 191.00 sep 0.1 mag 8.30,10.30 Sp A3
 
 
Coord 2000 07166+0920 Discov num A  2854 Comp AB Coord arcsec 2000 07 16 34.15 +09 20 11.8
Date first 1914 Date last 2022 Obs 8
Pa first 26 Pa last 191.3 P.A. Now (θ) 192.5°
Sep first 0.4 Sep last 0.125 Sep. Now (ρ) 0.135"
Mag pri 8.30 Mag sec 10.30 delta mag (ΔM) 2 Spectral class A3 (white)
Pri motion ra -029 Sec motion ra
Pri motion dec -002 Sec motion dec
Notes O W (Orbital solution, )
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 56225 Constellation Canis Minor SAO 115180 Tycho2 0762-00134-1
HD 56225 GC 9653 ADS 5946
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)1979.21y Semi-major axis (a)0.36a
Eccentricity (e)0.66 Inclination (i)96° Longitude of periastron (ω)119.3°
Node (Ω)27.4° Notes ReferenceTok2023a
Equinox2000 Last observation2022 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 202.6 0.178
2001 202.2 0.178
2002 201.8 0.177
2003 201.4 0.176
2004 201.0 0.174
2005 200.6 0.173
2006 200.2 0.171
2007 199.7 0.169
2008 199.3 0.167
2009 198.9 0.165
2010 198.4 0.163
2011 197.9 0.160
2012 197.5 0.157
2013 197.0 0.155
2014 196.4 0.152
2015 195.9 0.149
2016 195.3 0.146
2017 194.8 0.143
2018 194.1 0.140
2019 193.5 0.137
2020 192.8 0.134
2021 192.1 0.130
2022 191.4 0.127
2023 190.6 0.124
2024 189.8 0.120
2025 188.9 0.117
2026 188.0 0.114
2027 187.0 0.110
2028 186.0 0.107
2029 184.9 0.103
2030 183.7 0.100
2031 182.4 0.096
2032 181.1 0.093
2033 179.6 0.090
2034 178.0 0.086
2035 176.3 0.083
2036 174.5 0.080
2037 172.5 0.077
2038 170.3 0.074
2039 168.0 0.071
2040 165.4 0.068
2041 162.7 0.065
2042 159.7 0.062
2043 156.4 0.060
2044 152.9 0.058
2045 149.1 0.056
2046 145.0 0.054
2047 140.7 0.053
2048 136.2 0.051
2049 131.5 0.051
2050 126.7 0.050


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds07166%2B0920a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic