00155-1608 HEI 299

 
 
00h 15m 27.99s -16 08' 01.8" P.A. 281.1 sep 0.19 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)
281.1°
Sep first
0.2
Sep last
0.4
Sep. Now (ρ)
0.19"
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)242.8°± 0.4 Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation
label rho theta
2000-01-01 0.195 62.5
2001-01-01 0.284 307.6
2002-01-01 0.403 260.9
2003-01-01 0.372 226.0
2004-01-01 0.200 151.1
2005-01-01 0.212 1.9
2006-01-01 0.350 282.9
2007-01-01 0.411 246.2
2008-01-01 0.303 204.4
2009-01-01 0.189 81.3
2010-01-01 0.265 316.8
2011-01-01 0.395 265.3
2012-01-01 0.385 230.8
2013-01-01 0.219 167.0
2014-01-01 0.205 17.9
2015-01-01 0.333 288.8
2016-01-01 0.412 250.3
2017-01-01 0.325 211.4
2018-01-01 0.185 101.1
2019-01-01 0.246 327.4
2020-01-01 0.385 269.8
2021-01-01 0.396 235.4
2022-01-01 0.241 180.2
2023-01-01 0.201 34.9
2024-01-01 0.314 295.5
2025-01-01 0.411 254.4
2026-01-01 0.345 217.6
2027-01-01 0.185 121.5
2028-01-01 0.230 339.7
2029-01-01 0.373 274.6
2030-01-01 0.404 239.7

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00155-1608 HEI 299 2004 24 3 0.2 11.00 11.40 M3.5V M5V NOD 001527.67-160756.3
00155-1608 HEI 299 2007 25 221 0.4 11.00 11.40 M3.5V M5V NOD 001527.67-160756.3
00155-1608 HEI 299 2010 26 279 0.3 11.00 11.40 M3.5V M5V NOD 001527.67-160756.3
00155-1608 HEI 299 2014 31 295 0.3 11.00 11.40 M3.5V+M5V NO 001527.67-160756.3
00155-1608 HEI 299 2015 32 252 0.4 11.00 11.40 M3.5V+M5V NO 001527.67-160756.3

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