00155-1608 HEI 299

 
 
00H 15M 27.99S -16 08' 01.8" P.A. 208.2 SEP 0.32 MAG 11.00,11.40 SP M3.5V+M5V DIST. 4.99 PC (16.28 L.Y.)
 
 
Coord 2000
00155-1608
Discov num
HEI 299
Comp
Coord arcsec 2000
00 15 27.99 -16 08 01.8
Date first
1985
Date last
2015
Obs
49
Pa first
130
Pa last
252
P.A. Now (θ)
208.2°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.32"
Mag pri
11.00
Mag sec
11.40
delta mag (ΔM)
0.4
Spectral class
M3.5V+M5V (red/red)
Pri motion ra
-677
Sec motion ra
Pri motion dec
-561
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cetus
HIP
1242
HD
1242
GL
GJ 1005A
Distance
4.99
Distance ly
16.28
last precise pa
251.7
last precise sep
0.427
 
 
ORBITAL ELEMENTS
 
 
Period (P)1666.1d (4.56y)± 2.5 Periastron (T)49850.4d (1995.362y)± 0.8 Semi-major axis (a)0.3037a± 0.0005
Eccentricity (e)0.364± 0.001 Inclination (i)146.1°± 0.2 Longitude of periastron (ω)166.6°± 0.5
Node (Ω)62.8°± 0.4 Note Grade1(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000-01-01 0.195 242.5
2001-01-01 0.284 127.6
2002-01-01 0.403 80.9
2003-01-01 0.372 46.0
2004-01-01 0.200 331.1
2005-01-01 0.212 181.9
2006-01-01 0.350 102.9
2007-01-01 0.411 66.2
2008-01-01 0.303 24.4
2009-01-01 0.189 261.3
2010-01-01 0.265 136.8
2011-01-01 0.395 85.3
2012-01-01 0.385 50.8
2013-01-01 0.219 347.0
2014-01-01 0.205 197.9
2015-01-01 0.333 108.8
2016-01-01 0.412 70.3
2017-01-01 0.325 31.4
2018-01-01 0.185 281.1
2019-01-01 0.246 147.4
2020-01-01 0.385 89.8
2021-01-01 0.396 55.4
2022-01-01 0.241 0.2
2023-01-01 0.201 214.9
2024-01-01 0.314 115.5
2025-01-01 0.411 74.4
2026-01-01 0.345 37.6
2027-01-01 0.185 301.5
2028-01-01 0.230 159.7
2029-01-01 0.373 94.6
2030-01-01 0.404 59.7

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