15513-0305 CHR  51 (36 Ser)

 
 
15h 51m 15.65s -03 05' 25.5" P.A. 60.40 sep 0.4 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
2018
Obs
32
Pa first
206
Pa last
62
P.A. Now (θ)
60.4°
Sep first
0.1
Sep last
0.4
Sep. Now (ρ)
0.43"
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
62
Precise sep
0.411
Name
36 Ser
Other name
b Ser
Constellation
Serpens
SAO
140801
HIP
77660
Tycho2
5022-00935-1
Gaia DR2
4402884744523453312
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
62
last precise sep
0.411
 
 
ORBITAL ELEMENTS
 
 
Period (P)64.842y Periastron (T)2033.411y Semi-major axis (a)0.562a
Eccentricity (e)0.8 Inclination (i)94.4° Longitude of periastron (ω)100°
Node (Ω)54.3° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2018
label rho theta
2000 0.175 80.2
2001 0.192 77.8
2002 0.208 75.8
2003 0.224 74.0
2004 0.240 72.5
2005 0.256 71.2
2006 0.271 70.1
2007 0.286 69.0
2008 0.301 68.1
2009 0.315 67.2
2010 0.329 66.5
2011 0.342 65.7
2012 0.354 65.1
2013 0.366 64.4
2014 0.377 63.9
2015 0.387 63.3
2016 0.397 62.8
2017 0.405 62.3
2018 0.412 61.8
2019 0.418 61.3
2020 0.422 60.9
2021 0.425 60.4
2022 0.426 60.0
2023 0.425 59.5
2024 0.422 59.1
2025 0.415 58.6
2026 0.405 58.1
2027 0.391 57.6
2028 0.371 57.1
2029 0.344 56.5
2030 0.307 55.7


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



 
 


wds15513-0305h.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
15513-0305 CHR 51 2018 32 62 0.4 5.20 7.80 A3V+F8 NO 155115.65-030525.5

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