04179-3348 HMM 2 Aa1,2

04h 17m 53.62s -33° 47' 54.0" P.A. 33.00 sep 0.0 mag 4.60,4.65 Sp B9V dist. 54.56 pc (177.97 l.y.)

Coord 2000 04179-3348 Discov num HMM   2 Comp Aa1,2 Coord arcsec 2000 04 17 53.62 -33 47 54.0
Date first 2012 Date last 2014 Obs 10
Pa first 313 Pa last 33.1 P.A. Now (θ) 33.1°
Sep first 0.0 Sep last 0.002 Sep. Now (ρ) 0.002"
Mag pri 4.60 Mag sec 4.65 delta mag (ΔM) 0.05 Spectral class B9V (blue-white)
Pri motion ra +070 Sec motion ra
Pri motion dec -034 Sec motion dec
Notes N O K (See Notes, Orbital solution, K-band or other infrared magnitudes)


Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes

This double is physical.



04179-3348 SYSTEM COMPONENTS

Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 194902 04 17 54 -33 47 54 HMM 2 Aa1,2 2014 10 33 0.0 4.60 4.65 0.05 Y <===
Show 194902 04 17 54 -33 47 54 I 270 Aa,Ab 1933 6 343 0.1 3.56 4.00 0.44
Show Ups4 Eri 194902 04 17 54 -33 47 54 HUB 3 AB 2016 2 163 5.5 3.87 9.90 6.03
Show 194902 04 17 54 -33 47 54 HJ 3636 AC 1998 3 8 49.0 3.87 11.80 7.93


Quintuple system
3 estimated visually detectable stars in this system



OTHER CATALOGS AND DESIGNATIONS

Constellation Eridanus SAO 194902 HIP 20042 Tycho2 7040-01534-1
Gaia DR2 4870527586936740480 HD 27376 HR 1347 GC 5201
CD CD-34 1614 CP CP-34 466 Bayer Upsilon 4 Eridani Bayer name Ups4 Eri
Distance 54.56 Distance ly 177.97 Bayer greek υ4 Eri








SUSPECTED ORBITAL ELEMENTS



Identifier04179-3348
coord_arcsec_2000041753.62-334754.0
Period (P)120.2478h± 0.000019 Periastron (T)54407.7214d (2007.839y)± 0.002 Semi-major axis (a)1.902m± 0.006
Eccentricity (e)0 Inclination (i)146.2°± 0.1 Longitude of periastron (ω)90°
Node (Ω)72°± 0.4 Notesn ReferenceHmm2017
Equinox2000 Last observation2014 Grade4(1=Definitive, 9=Indet.)

label theta rho
2000 139.3 0.002
2001 182.8 0.002
2002 221.2 0.002
2003 252.9 0.002
2004 284.8 0.002
2005 323.6 0.002
2006 7.2 0.002
2007 44.6 0.002
2008 76.0 0.002
2009 108.4 0.002
2010 148.1 0.002
2011 191.4 0.002
2012 228.0 0.002
2013 259.2 0.002
2014 292.1 0.002
2015 332.5 0.002
2016 15.6 0.002
2017 51.4 0.002
2018 82.3 0.002
2019 115.8 0.002
2020 157.1 0.002
2021 199.6 0.002
2022 234.6 0.002
2023 265.5 0.002
2024 299.7 0.002
2025 341.6 0.002
2026 23.6 0.002
2027 57.9 0.002
2028 88.8 0.002
2029 123.6 0.002
2030 166.1 0.002


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



 
 


wds04179-3348a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic