15513-0305 CHR  51 (36 Ser)

 
 
15h 51m 15.65s -03 05' 25.5" P.A. 241.1 sep 0.35 mag 5.20,7.80 Sp A3V+F8 dist. 49.75 pc (162.28 l.y.)
 
 
Coord 2000
15513-0305
Discov num
CHR  51
Comp
Coord arcsec 2000
15 51 15.65 -03 05 25.5
Date first
1985
Date last
2014
Obs
30
Pa first
206
Pa last
64
P.A. Now (θ)
241.1°
Sep first
0.1
Sep last
0.4
Sep. Now (ρ)
0.35"
Mag pri
5.20
Mag sec
7.80
delta mag (ΔM)
2.6
Spectral class
A3V+F8 (white/yellow-white)
Pri motion ra
-084
Sec motion ra
Pri motion dec
-027
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
63.9
Precise sep
0.382
Name
36 Ser
Other name
b Ser
Constellation
Serpens
SAO
140801
HIP
77660
Tycho2
5022-00935-1
HD
141851
HR
5895
GC
21301
BD
BD-02 4058
Flamsteed
36 Serpentis
Flamsteed name
36 Ser
Distance
49.75
Distance ly
162.28
last precise pa
63.9
last precise sep
0.382
 
 
ORBITAL ELEMENTS
 
 
Period (P)52.82y± 0.3 Periastron (T)2001.6y± 0.2 Semi-major axis (a)0.344a± 0.002
Eccentricity (e)0.79± 0.002 Inclination (i)100.1°± 1.5 Longitude of periastron (ω)66.3°± 4
Node (Ω)73.2°± 2 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.121 78.3
2001 0.083 70.3
2002 0.021 292.6
2003 0.113 258.1
2004 0.176 253.9
2005 0.221 251.7
2006 0.255 250.1
2007 0.281 248.9
2008 0.301 247.9
2009 0.317 247.0
2010 0.329 246.2
2011 0.338 245.4
2012 0.345 244.7
2013 0.349 243.9
2014 0.352 243.2
2015 0.353 242.5
2016 0.352 241.8
2017 0.350 241.1
2018 0.347 240.4
2019 0.343 239.7
2020 0.338 238.9
2021 0.332 238.2
2022 0.325 237.4
2023 0.317 236.5
2024 0.308 235.6
2025 0.299 234.7
2026 0.289 233.7
2027 0.278 232.6
2028 0.267 231.4
2029 0.255 230.2
2030 0.243 228.8

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

grafico orbita





wds15513-0305g.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
15513-0305 CHR 51 1991 9 148 0.1 5.11   A3V NO 155115.65-030525.5
15513-0305 CHR 51 2009 14 247 0.3 5.11   A3V NO 155115.65-030525.5
15513-0305 CHR 51 2011 27 64 0.3 5.20 7.80 A3V F8 NOD 155115.65-030525.5
15513-0305 CHR 51 2014 30 64 0.4 5.20 7.80 A3V+F8 NO 155115.65-030525.5

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