15152+0456 HDS 2143 (3 Ser)

 
 
15h 15m 11.37s +04° 56' 21.7" P.A. 267.00 sep 0.3 mag 5.61,7.90 Sp K0III dist. 114.42 pc (373.24 l.y.)
 
 
Coord 2000 15152+0456 Discov num HDS2143 Comp Coord arcsec 2000 15 15 11.37 +04 56 21.7
Date first 1991 Date last 2021 Obs 14
Pa first 233 Pa last 266.9 P.A. Now (θ) 266.9°
Sep first 0.2 Sep last 0.275 Sep. Now (ρ) 0.275"
Mag pri 5.61 Mag sec 7.90 delta mag (ΔM) 2.29 Spectral class K0III (yellow-orange)
Pri motion ra -023 Sec motion ra
Pri motion dec +004 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 3 Ser Constellation Serpens SAO 120916 HIP 74649
Tycho2 0344-01146-1 Gaia DR2 1156084632057284224 HD 135482 HR 5675
GC 20501 BD BD+05 2985 Flamsteed 3 Serpentis Flamsteed name 3 Ser
FK5 562 Distance 114.42 Distance ly 373.24
 
 
ORBITAL ELEMENTS
 
 
Period (P)66y± 5 Periastron (T)2063y± 5 Semi-major axis (a)229m± 2
Eccentricity (e)0.962± 0.005 Inclination (i)132°± 4 Longitude of periastron (ω)275°± 5
Node (Ω)354°± 8 Notes ReferenceHor2015b
Equinox2000 Last observation2014 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 290.8 0.102
2001 286.6 0.120
2002 283.4 0.137
2003 280.8 0.151
2004 278.8 0.164
2005 277.0 0.177
2006 275.4 0.188
2007 274.0 0.198
2008 272.7 0.208
2009 271.6 0.217
2010 270.5 0.226
2011 269.5 0.234
2012 268.6 0.241
2013 267.7 0.248
2014 266.9 0.254
2015 266.1 0.260
2016 265.3 0.265
2017 264.6 0.270
2018 263.9 0.275
2019 263.2 0.279
2020 262.5 0.283
2021 261.9 0.286
2022 261.3 0.290
2023 260.7 0.292
2024 260.0 0.295
2025 259.5 0.297
2026 258.9 0.299
2027 258.3 0.300
2028 257.7 0.301
2029 257.1 0.302
2030 256.6 0.302


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



 
 


wds15152%2B0456a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic