15282+0251 A  2175

 
 
15h 28m 12.94s +02 51' 21.6" P.A. 215.10 sep 0.2 mag 8.78,9.09 Sp A5 dist. 250.63 pc (817.56 l.y.)
 
 
Coord 2000
15282+0251
Discov num
A  2175
Comp
Coord arcsec 2000
15 28 12.94 +02 51 21.6
Date first
1910
Date last
2019
Obs
50
Pa first
349
Pa last
220
P.A. Now (θ)
215.1°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.23"
Mag pri
8.78
Mag sec
9.09
delta mag (ΔM)
0.31
Spectral class
A5 (white)
Pri motion ra
-016
Sec motion ra
Pri motion dec
-016
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
220.1
Precise sep
0.205
Constellation
Serpens
HIP
75724
Tycho2
0341-00121-1
Gaia DR2
4421301323766535168
HD
137844
ADS
9654
BD
BD+03 3034
Distance
250.63
Distance ly
817.56
last precise pa
220.1
last precise sep
0.205
 
 
ORBITAL ELEMENTS
 
 
Period (P)218.14y Periastron (T)1495.5y Semi-major axis (a)0.263a
Eccentricity (e)0.5 Inclination (i)65.5° Longitude of periastron (ω)254.4°
Node (Ω)177.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1998
label rho theta
2000 0.266 201.2
2001 0.264 201.8
2002 0.263 202.4
2003 0.262 203.0
2004 0.260 203.6
2005 0.259 204.2
2006 0.258 204.8
2007 0.256 205.4
2008 0.255 206.0
2009 0.253 206.7
2010 0.251 207.3
2011 0.250 208.0
2012 0.248 208.6
2013 0.246 209.3
2014 0.244 210.0
2015 0.242 210.7
2016 0.241 211.4
2017 0.239 212.1
2018 0.237 212.8
2019 0.235 213.6
2020 0.233 214.3
2021 0.231 215.1
2022 0.229 215.8
2023 0.227 216.6
2024 0.225 217.4
2025 0.223 218.3
2026 0.221 219.1
2027 0.218 219.9
2028 0.216 220.8
2029 0.214 221.7
2030 0.212 222.6


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



 
 


wds15282%2B0251a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
15282+0251 A 2175 2006 45 206 0.2 8.78 9.09 A5 NOD 152812.94+025121.6
15282+0251 A 2175 2009 47 210 0.2 8.78 9.09 A5 NOD 152812.94+025121.6
15282+0251 A 2175 2015 48 216 0.2 8.78 9.09 A5 NO 152812.94+025121.6
15282+0251 A 2175 2019 49 220 0.2 8.78 9.09 A5 NO 152812.94+025121.6

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