00028+0208 BU  281AB

 
 
00H 02M 47.14S +02 07' 49.4" P.A. 159.9 SEP 1.56 MAG 7.4,9.36 SP F2V DIST. 42.63 PC (139.06 L.Y.)
 
 
Coord 2000
00028+0208
Discov num
BU  281
Comp
AB
Coord arcsec 2000
00 02 47.14 +02 07 49.4
Date first
1877
Date last
2014
Obs
67
Pa first
217
Pa last
160
P.A. Now (θ)
159.9°
Sep first
1.1
Sep last
1.6
Sep. Now (ρ)
1.56"
Mag pri
7.4
Mag sec
9.36
delta mag (ΔM)
1.96
Spectral class
F2V (yellow-white)
Pri motion ra
+062
Sec motion ra
+062
Pri motion dec
-094
Sec motion dec
-094
Notes
N O (See Notes, Orbital solution)
 
 
00028+0208 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 00028+0208 BU 281 AB 1877 2014 67 160 1.6 7.40 9.36 1.96 Y <===
Show 00028+0208 HJ 998 AC 1877 2000 18 330 43.9 7.40 12.38 4.98
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Pisces
HIP
223
Tycho2
0001-00903-1
HD
225028
ADS
9
BD
BD+01 4820
Distance
42.63
Distance ly
139.06
last precise pa
160.3
last precise sep
1.594
 
 
ORBITAL ELEMENTS
 
 
Period (P)1117y Periastron (T)2077.5y Semi-major axis (a)3.14a
Eccentricity (e)0.639 Inclination (i)108.5° Longitude of periastron (ω)55.7°
Node (Ω)149.9° Note Grade5(1=Definitive, 9=Indet.)
Equinox2000 Last observation2014
label rho theta
2000 1.572 164.9
2001 1.573 164.6
2002 1.573 164.3
2003 1.573 164.0
2004 1.573 163.6
2005 1.573 163.3
2006 1.573 163.0
2007 1.572 162.7
2008 1.571 162.4
2009 1.570 162.1
2010 1.569 161.8
2011 1.568 161.4
2012 1.566 161.1
2013 1.564 160.8
2014 1.562 160.5
2015 1.560 160.2
2016 1.558 159.9
2017 1.555 159.5
2018 1.552 159.2
2019 1.549 158.9
2020 1.546 158.6
2021 1.542 158.2
2022 1.538 157.9
2023 1.534 157.6
2024 1.529 157.3
2025 1.524 156.9
2026 1.519 156.6
2027 1.514 156.2
2028 1.508 155.9
2029 1.502 155.6
2030 1.496 155.2

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6