15152+0456 HDS2143 (3 Ser)

 
 
15H 15M 11.37S +04 56' 21.7" P.A. 263.9 SEP 0.28 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
2014
Obs
10
Pa first
233
Pa last
269
P.A. Now (θ)
263.9°
Sep first
0.2
Sep last
0.3
Sep. Now (ρ)
0.28"
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
HD
135482
HR
5675
GC
20501
BD
BD+05 2985
Flamsteed
3 Serpentis
Flamsteed name
3 Ser
Distance
114.42
Distance ly
373.24
last precise pa
269.2
last precise sep
0.251
 
 
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 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 0.102 290.8
2001 0.120 286.6
2002 0.137 283.4
2003 0.151 280.8
2004 0.164 278.8
2005 0.177 277.0
2006 0.188 275.4
2007 0.198 274.0
2008 0.208 272.7
2009 0.217 271.6
2010 0.226 270.5
2011 0.234 269.5
2012 0.241 268.6
2013 0.248 267.7
2014 0.254 266.9
2015 0.260 266.1
2016 0.265 265.3
2017 0.270 264.6
2018 0.275 263.9
2019 0.279 263.2
2020 0.283 262.5
2021 0.286 261.9
2022 0.290 261.3
2023 0.292 260.7
2024 0.295 260.0
2025 0.297 259.5
2026 0.299 258.9
2027 0.300 258.3
2028 0.301 257.7
2029 0.302 257.1
2030 0.302 256.6

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic