04002+0818 A  1936BC

 
 
04h 00m 09.54s +08 18' 18.9" P.A. 200.4 sep 0.28 mag 9.60,9.70 Sp K0
 
 
Coord 2000
04002+0818
Discov num
A  1936
Comp
BC
Coord arcsec 2000
04 00 09.54 +08 18 18.9
Date first
1908
Date last
2008
Obs
19
Pa first
136
Pa last
310
P.A. Now (θ)
200.4°
Sep first
0.4
Sep last
0.3
Sep. Now (ρ)
0.28"
Mag pri
9.60
Mag sec
9.70
delta mag (ΔM)
0.1
Spectral class
K0 (yellow-orange)
Pri motion ra
+029
Sec motion ra
Pri motion dec
+018
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
04002+0818 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 04002+0818 A 1936 A,BC 1908 2013 17 26 4.1 10.48 10.33 0.15
Show 04002+0818 A 1936 BC 1908 2008 19 200 0.3 9.60 9.70 0.10 Y <===
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Taurus
ADS
2923
last precise pa
309.5
last precise sep
0.349
 
 
ORBITAL ELEMENTS
 
 
Period (P)225y Periastron (T)1978.87y Semi-major axis (a)0.425a
Eccentricity (e)0.179 Inclination (i)152.4° Longitude of periastron (ω)51.3°
Node (Ω)68.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2016
label rho theta
2000 0.326 328.8
2001 0.328 326.5
2002 0.331 324.1
2003 0.333 321.9
2004 0.335 319.6
2005 0.338 317.4
2006 0.341 315.2
2007 0.343 313.0
2008 0.346 310.9
2009 0.349 308.8
2010 0.352 306.8
2011 0.355 304.8
2012 0.359 302.8
2013 0.362 300.8
2014 0.365 298.9
2015 0.369 297.1
2016 0.372 295.2
2017 0.375 293.4
2018 0.379 291.7
2019 0.382 289.9
2020 0.386 288.2
2021 0.389 286.5
2022 0.392 284.9
2023 0.396 283.3
2024 0.399 281.7
2025 0.403 280.1
2026 0.406 278.5
2027 0.409 277.0
2028 0.412 275.5
2029 0.415 274.1
2030 0.419 272.6

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
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
04002+0818 A 1936 BC 2005 18 315 0.3 9.60 9.70 K0 O 040009.39+081818.9
04002+0818 A 1936 BC 2008 19 310 0.3 9.60 9.70 K0 O 040009.39+081818.9

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