01198-0031 STF 113A,BC (42 Cet)

 
 
01H 19M 48.30S -00 30' 32.5" P.A. 20.9 SEP 1.64 MAG 6.45,6.99 SP A2V+G4III DIST. 100.7 PC (328.48 L.Y.)
 
 
Coord 2000
01198-0031
Discov num
STF 113
Comp
A,BC
Coord arcsec 2000
01 19 48.30 -00 30 32.5
Date first
1829
Date last
2016
Obs
325
Pa first
331
Pa last
21
P.A. Now (θ)
20.9°
Sep first
1.3
Sep last
1.6
Sep. Now (ρ)
1.64"
Mag pri
6.45
Mag sec
6.99
delta mag (ΔM)
0.54
Spectral class
A2V+G4III (white/yellow)
Pri motion ra
+014
Sec motion ra
+014
Pri motion dec
-016
Sec motion dec
-016
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
01198-0031 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 42 Cet 129235 01198-0031 STF 113 A,BC 1829 2016 325 21 1.6 6.45 6.99 0.54 Y <===
Show 129235 01198-0031 FIN 337 BC 1958 2015 84 115 0.1 7.40 7.60 0.20 Y
Triple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
42 Cet
Constellation
Cetus
SAO
129235
HIP
6226
HD
8036
HR
385
GC
1600
ADS
1081
Flamsteed
42 Ceti
Flamsteed name
42 Cet
Distance
100.7
Distance ly
328.48
last precise pa
21.4
last precise sep
1.623
 
 
ORBITAL ELEMENTS
 
 
Period (P)650y Periastron (T)1686y Semi-major axis (a)1.324a
Eccentricity (e)0.64 Inclination (i)43.5° Longitude of periastron (ω)106.7°
Node (Ω)87.2° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2013
label rho theta
2000 1.620 17.4
2001 1.621 17.6
2002 1.623 17.8
2003 1.624 18.0
2004 1.625 18.2
2005 1.626 18.4
2006 1.627 18.7
2007 1.628 18.9
2008 1.629 19.1
2009 1.630 19.3
2010 1.632 19.5
2011 1.633 19.7
2012 1.634 19.9
2013 1.635 20.1
2014 1.636 20.3
2015 1.637 20.5
2016 1.638 20.7
2017 1.639 20.9
2018 1.639 21.1
2019 1.640 21.3
2020 1.641 21.5
2021 1.642 21.7
2022 1.643 21.9
2023 1.644 22.1
2024 1.645 22.3
2025 1.646 22.5
2026 1.647 22.7
2027 1.647 22.9
2028 1.648 23.1
2029 1.649 23.3
2030 1.650 23.5

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