23340+3120 BU 720 (72 Peg)

 
 
23h 33m 57.19s +31° 19' 31.0" P.A. 106.00 sep 0.6 mag 5.67,6.11 Sp K4IIIb dist. 168.35 pc (549.16 l.y.)
 
 
Coord 2000 23340+3120 Discov num BU  720 Comp Coord arcsec 2000 23 33 57.19 +31 19 31.0
Date first 1878 Date last 2018 Obs 442
Pa first 309 Pa last 105.9 P.A. Now (θ) 105.9°
Sep first 0.4 Sep last 0.552 Sep. Now (ρ) 0.552"
Mag pri 5.67 Mag sec 6.11 delta mag (ΔM) 0.44 Spectral class K4IIIb (yellow-orange)
Pri motion ra +049 Sec motion ra +049
Pri motion dec -017 Sec motion dec -017
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 72 Peg Var name NSV14617 Peg Constellation Pegasus SAO 73341
HIP 116310 Tycho2 2766-01925-1 Gaia DR2 2871407124544830848 HD 221673
HR 8943 GC 32772 ADS 16836 BD BD+30 4978
Flamsteed 72 Pegasi Flamsteed name 72 Peg Distance 168.35 Distance ly 549.16
 
 
ORBITAL ELEMENTS
 
 
Period (P)492.31y± 75.96 Periastron (T)1904.92y± 10.015 Semi-major axis (a)0.568a± 0.065
Eccentricity (e)0.322± 0.047 Inclination (i)21.7°± 8.3 Longitude of periastron (ω)293°± 15
Node (Ω)56.2°± 6 Notesn ReferenceMut2010e
Equinox2000 Last observation2008 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 94.0 0.546
2001 94.7 0.547
2002 95.4 0.549
2003 96.1 0.551
2004 96.7 0.553
2005 97.4 0.554
2006 98.1 0.556
2007 98.8 0.558
2008 99.4 0.560
2009 100.1 0.561
2010 100.7 0.563
2011 101.4 0.565
2012 102.0 0.566
2013 102.7 0.568
2014 103.3 0.570
2015 104.0 0.571
2016 104.6 0.573
2017 105.2 0.575
2018 105.9 0.576
2019 106.5 0.578
2020 107.1 0.580
2021 107.7 0.581
2022 108.3 0.583
2023 108.9 0.584
2024 109.5 0.586
2025 110.1 0.587
2026 110.7 0.589
2027 111.3 0.591
2028 111.9 0.592
2029 112.5 0.594
2030 113.1 0.595


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



 
 


wds23340%2B3120a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
SUSPECTED ORBITAL ELEMENTS
 
 
Identifier23340+3120 BU 720 B
coord_arcsec_2000233357.15+311931.2
Period (P)1539d (4.21y)± 51 Periastron (T)53356m (2004.961y)± 32 Semi-major axis (a)0.322m± 0.029
Eccentricity (e)0 Inclination (i)66.6°± 4 Longitude of periastron (ω)
Node (Ω)128.3°± 4.1 Notesn ReferenceMut2010e
Equinox2000 Last observation2008 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 89.3
2001-01-01 137.2
2002-01-01 255.9
2003-01-01 313.3
2004-01-01 57.5
2005-01-01 129.6
2006-01-01 215.2
2007-01-01 306.0
2008-01-01 13.6
2009-01-01 122.3
2010-01-01 176.6
2011-01-01 298.3
2012-01-01 344.4
2013-01-01 113.7
2014-01-01 155.5
2015-01-01 288.4
2016-01-01 328.7
2017-01-01 101.8
2018-01-01 143.3
2019-01-01 273.2
2020-01-01 318.7
2021-01-01 81.3
2022-01-01 134.7
2023-01-01 244.8
2024-01-01 310.9
2025-01-01 43.5
2026-01-01 127.3
2027-01-01 201.0
2028-01-01 303.6
2029-01-01 2.1
2030-01-01 119.7


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



 
 


wds23340%2B3120r.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic