02409+0452 STT 45 (HD 16721)

 
 
02h 40m 56.61s +04° 52' 14.6" P.A. 257.00 sep 0.8 mag 7.39,8.95 Sp F0
 
 
Coord 2000 02409+0452 Discov num STT  45 Comp Coord arcsec 2000 02 40 56.61 +04 52 14.6
Date first 1844 Date last 2018 Obs 46
Pa first 298 Pa last 256.8 P.A. Now (θ) 256.8°
Sep first 1.5 Sep last 0.829 Sep. Now (ρ) 0.829"
Mag pri 7.39 Mag sec 8.95 delta mag (ΔM) 1.56 Spectral class F0 (yellow-white)
Pri motion ra +004 Sec motion ra +004
Pri motion dec -016 Sec motion dec -016
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 16721 Constellation Cetus SAO 110680 Tycho2 0050-00606-1
Gaia DR2 5972070421280128 HD 16721 ADS 2043
 
 
ORBITAL ELEMENTS
 
 
Period (P)1207.383y± 611.609 Periastron (T)1802.628y± 58.1814 Semi-major axis (a)5.26971a± 3.6158
Eccentricity (e)0.87373± 0.11611 Inclination (i)94.561°± 6.534 Longitude of periastron (ω)105.852°± 23.086
Node (Ω)123.515°± 4.687 Notes ReferenceIzm2019
Equinox Last observation2008 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 266.3 0.863
2001 265.9 0.857
2002 265.4 0.851
2003 265.0 0.845
2004 264.5 0.840
2005 264.1 0.834
2006 263.6 0.828
2007 263.2 0.822
2008 262.7 0.817
2009 262.2 0.811
2010 261.7 0.805
2011 261.2 0.800
2012 260.7 0.794
2013 260.2 0.789
2014 259.7 0.784
2015 259.1 0.778
2016 258.6 0.773
2017 258.1 0.768
2018 257.5 0.763
2019 257.0 0.757
2020 256.4 0.752
2021 255.8 0.748
2022 255.3 0.743
2023 254.7 0.738
2024 254.1 0.733
2025 253.5 0.728
2026 252.9 0.724
2027 252.3 0.719
2028 251.6 0.715
2029 251.0 0.710
2030 250.4 0.706


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


 
  


wds02409%2B0452a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 02409+0452 STT 45 (HD 16721) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
 
 
DISCOVERER
 
 
idgroup discov author
1 STT Struve, O.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02409+0452 STT 45 2005 39 259 0.8 7.39 8.95 F0 024056.61+045214.6
02409+0452 STT 45 2008 40 264 0.8 7.39 8.95 F0 024056.61+045214.6
02409+0452 STT 45 2015 42 263 0.8 7.39 8.95 F0 024056.61+045214.6
02409+0452 STT 45 2018 43 257 0.8 7.39 8.95 F0 024056.61+045214.6

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WDS 02409+0452 STT 45 (HD 16721) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 02409+0452 STT 45 (HD 16721) : MEASURES
 
 
No records found.

 
 
WDS 02409+0452 (HD 16721) : VIRTUAL EYEPIECE
 
 

virtual eyepiece
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Radius:
Components only
 
 
WDS 02409+0452 (HD 16721) : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.