00174+0853 A  1803AB (38 Hya)

 
 
00h 17m 24.50s +08 52' 34.8" P.A. 197.00 sep 0.0 mag 8.38,7.78 Sp F7V dist. 15.19 pc (49.55 l.y.)
 
 
Coord 2000
00174+0853
Discov num
A  1803
Comp
AB
Coord arcsec 2000
00 17 24.50 +08 52 34.8
Date first
1908
Date last
2008
Obs
53
Pa first
300
Pa last
307
P.A. Now (θ)
197°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.02"
Mag pri
8.38
Mag sec
7.78
delta mag (ΔM)
0.6
Spectral class
F7V (yellow-white)
Pri motion ra
+063
Sec motion ra
Pri motion dec
+061
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
00174+0853 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 38 Psc 00 17 24 +08 52 35 A 1803 AB 2008 53 197 0.0 8.38 7.78 0.60 Y <===
Show 00 17 24 +08 52 35 STF 22 AB,C 2020 175 234 3.9 7.13 7.66 0.53
Show 00 17 24 +08 52 35 STF 22 AB,D 2005 10 151 66.8 7.13 11.50 4.37
Show 00 17 24 +08 52 35 POP 229 AB,E 2005 3 239 75.3 7.13 16.16 9.03
Quintuple system
6 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
307.2
Precise sep
0.162
Name
38 Hya
Constellation
Hydra
HIP
1392
Gaia DR2
2752315446728243328
HD
1317
GC
340
ADS
238
BD
BD+08 24
Flamsteed
38 Hydrae
Flamsteed name
38 Hya
Distance
15.19
Distance ly
49.55
last precise pa
307.2
last precise sep
0.162
 
 
ORBITAL ELEMENTS
 
 
Period (P)35.66y Periastron (T)1950.7y Semi-major axis (a)0.189a
Eccentricity (e)0.002 Inclination (i)95.4° Longitude of periastron (ω)282°
Node (Ω)124.1° Note Grade2(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.096 114.9
2001 0.067 109.7
2002 0.037 96.1
2003 0.018 33.7
2004 0.038 332.0
2005 0.067 318.5
2006 0.096 313.3
2007 0.123 310.4
2008 0.146 308.6
2009 0.165 307.2
2010 0.178 306.0
2011 0.187 305.0
2012 0.189 304.0
2013 0.186 303.1
2014 0.177 302.1
2015 0.162 300.9
2016 0.143 299.4
2017 0.119 297.4
2018 0.092 294.4
2019 0.063 288.5
2020 0.033 271.8
2021 0.019 197.0
2022 0.042 148.4
2023 0.072 137.3
2024 0.101 132.6
2025 0.127 130.0
2026 0.150 128.3
2027 0.168 126.9
2028 0.180 125.8
2029 0.187 124.8
2030 0.189 123.8


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



 
 


wds00174%2B0853b.png orbit plot
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
00174+0853 A 1803 AB 1998 51 300 0.1 8.38 7.78 F7V NOD 001724.50+085234.8
00174+0853 A 1803 AB 2008 52 307 0.2 8.38 7.78 F7V NOD 001724.50+085234.8

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