17502+4424 SIG   3

 
 
17H 50M 12.91S +44 24' 04.3" P.A. 95.7 SEP 0.35 MAG 13.20,14.00 SP M7.5+L0
 
 
Coord 2000
17502+4424
Discov num
SIG   3
Comp
Coord arcsec 2000
17 50 12.91 +44 24 04.3
Date first
2002
Date last
2009
Obs
7
Pa first
340
Pa last
60
P.A. Now (θ)
95.7°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.35"
Mag pri
13.20
Mag sec
14.00
delta mag (ΔM)
0.8
Spectral class
M7.5+L0 (red/very deep red)
Pri motion ra
-014
Sec motion ra
Pri motion dec
+138
Sec motion dec
Notes
N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hercules
last precise pa
60.3
last precise sep
0.202
 
 
ORBITAL ELEMENTS
 
 
Period (P)317y± 240 Periastron (T)2004.3y± 1.8 Semi-major axis (a)0.728a± 0.375
Eccentricity (e)0.71± 0.18 Inclination (i)44°± 10 Longitude of periastron (ω)267°± 26
Node (Ω)99°± 6 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2009
label rho theta
2000 0.198 318.3
2001 0.182 326.7
2002 0.168 336.7
2003 0.158 348.2
2004 0.153 0.9
2005 0.153 14.1
2006 0.158 26.8
2007 0.168 38.3
2008 0.182 48.3
2009 0.198 56.8
2010 0.215 64.0
2011 0.233 70.1
2012 0.252 75.3
2013 0.270 79.8
2014 0.287 83.7
2015 0.305 87.2
2016 0.321 90.3
2017 0.338 93.1
2018 0.353 95.7
2019 0.368 98.0
2020 0.383 100.2
2021 0.397 102.2
2022 0.410 104.0
2023 0.423 105.8
2024 0.436 107.5
2025 0.448 109.0
2026 0.460 110.5
2027 0.471 111.9
2028 0.482 113.2
2029 0.492 114.5
2030 0.503 115.8

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