08494+0341 A  2899

 
 
08h 49m 21.20s +03 41' 02.3" P.A. 230.1 sep 0.73 mag 8.20,13.70 Sp G5 dist. 35.44 pc (115.61 l.y.)
 
 
Coord 2000
08494+0341
Discov num
A  2899
Comp
Coord arcsec 2000
08 49 21.20 +03 41 02.3
Date first
1914
Date last
2015
Obs
5
Pa first
356
Pa last
236
P.A. Now (θ)
230.1°
Sep first
1.6
Sep last
0.7
Sep. Now (ρ)
0.73"
Mag pri
8.20
Mag sec
13.70
delta mag (ΔM)
5.5
Spectral class
G5 (yellow)
Pri motion ra
-273
Sec motion ra
Pri motion dec
-016
Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Hydra
HIP
43304
Tycho2
0216-00049-1
HD
75318
ADS
7022
BD
BD+04 2051
Distance
35.44
Distance ly
115.61
last precise pa
235.6
last precise sep
0.683
 
 
ORBITAL ELEMENTS
 
 
Period (P)300y Periastron (T)2123y± 51 Semi-major axis (a)1.53a± 0.19
Eccentricity (e)0.231± 0.059 Inclination (i)107.8°± 3.6 Longitude of periastron (ω)250.4°± 39.9
Node (Ω)± 5.1 Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000 0.566 269.2
2001 0.568 266.6
2002 0.571 264.0
2003 0.574 261.4
2004 0.579 258.9
2005 0.584 256.4
2006 0.591 254.0
2007 0.598 251.7
2008 0.607 249.4
2009 0.616 247.1
2010 0.625 245.0
2011 0.636 242.9
2012 0.647 240.8
2013 0.659 238.9
2014 0.671 237.0
2015 0.684 235.2
2016 0.697 233.4
2017 0.711 231.7
2018 0.725 230.1
2019 0.740 228.5
2020 0.754 227.0
2021 0.770 225.6
2022 0.785 224.2
2023 0.800 222.9
2024 0.816 221.6
2025 0.832 220.4
2026 0.848 219.2
2027 0.864 218.0
2028 0.880 217.0
2029 0.897 215.9
2030 0.913 214.9

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08494+0341 A 2899 1922 2 353 1.6 8.20 13.70 G5 084921.37+034102.3
08494+0341 A 2899 2013 3 239 0.7 8.20 13.70 G5 084921.37+034102.3
08494+0341 A 2899 2015 5 235 0.7 8.20 13.70 G5 084921.37+034102.3

If you need more information about this double, apply for a data request form to the WDS.