00057+4549 STT 547AF

 
 
00h 05m 41.03s +45 48' 43.3" P.A. 254.00 sep 330.0 mag 8.98,10.19 Sp K6V+M2e dist. 11.31 pc (36.89 l.y.)
 
 
Coord 2000
00057+4549
Discov num
STT 547
Comp
AF
Coord arcsec 2000
00 05 41.03 +45 48 43.3
Date first
1897
Date last
2018
Obs
41
Pa first
254
Pa last
254
P.A. Now (θ)
254°
Sep first
327.6
Sep last
330.0
Sep. Now (ρ)
330"
Mag pri
8.98
Mag sec
10.19
delta mag (ΔM)
1.21
Spectral class
K6V+M2e (yellow-orange/red)
Pri motion ra
+879
Sec motion ra
+870
Pri motion dec
-154
Sec motion dec
-151
Notes
N O W V (See Notes, Orbital solution, , Proper motion indicates physical)
rPM=0.011 (< 0.3, Physical double)
This double is physical.
 
 
00057+4549 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 36046 00 05 41 +45 48 43 STT 547 AB 2020 428 191 5.9 8.98 9.15 0.17 Y
Show 36046 00 05 41 +45 48 43 STT 547 AC 2018 29 263 117.0 8.98 13.71 4.73
Show 36046 00 05 41 +45 48 43 STT 547 AD 2018 37 230 108.4 8.98 12.51 3.53
Show 36046 00 05 41 +45 48 43 STT 547 AE 2018 46 346 58.7 8.98 11.75 2.77
Show 36046 00 05 41 +45 48 43 STT 547 AF 2018 41 254 330.0 8.98 10.19 1.21 Y <===
Show 36046 00 05 41 +45 48 43 POP 217 AP 2018 37 314 17.4 8.98 13.40 4.42
Show 36046 00 05 41 +45 48 43 POP 217 AQ 2006 7 130 20.0 8.98 16.00 7.02
Show 36046 00 05 41 +45 48 43 POP 217 AX 2006 2 222 12.0 8.98
Show 36046 00 05 41 +45 48 43 POP 217 AY 2018 9 78 188.8 8.98 14.80 5.82
Show 36048 00 05 41 +45 48 37 STT 547 BC 2016 8 266 115.7 9.15 13.71 4.56
Show 36048 00 05 41 +45 48 37 STT 547 BD 2016 10 233 106.4 9.15 12.51 3.36
Show 36048 00 05 41 +45 48 37 STT 547 BE 2016 16 346 64.4 9.15 11.75 2.60
Show 36048 00 05 41 +45 48 37 STT 547 BF 2018 35 251 324.2 9.15 10.19 1.04
Show 36048 00 05 41 +45 48 37 STT 547 BP 2016 9 331 20.3 9.15 13.10 3.95
Show 36046 00 05 31 +45 48 26 PAL 2 Ca,Cb 2016 20 91 6.1 13.71 14.90 1.19
Show 36048 00 06 00 +45 49 20 POP 217 YG 2016 11 188 9.7 14.80 15.80 1.00
12-fold system
11 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
253.9
Precise sep
329.97
Constellation
Hydra
SAO
36046
HIP
473
Tycho2
3246-00874-1
HD
38
ADS
48
GL
Gl 4A
BD
BD+45 4408
Distance
11.31
Distance ly
36.89
last precise pa
253.9
last precise sep
329.97
 
 
ORBITAL ELEMENTS
 
 
Period (P)830.37c Periastron (T)26357y Semi-major axis (a)205.1a
Eccentricity (e)0.81 Inclination (i)75.9° Longitude of periastron (ω)345.6°
Node (Ω)74.3° Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 326.909 254.3
2001 326.903 254.3
2002 326.898 254.3
2003 326.893 254.3
2004 326.887 254.3
2005 326.882 254.3
2006 326.877 254.3
2007 326.871 254.3
2008 326.866 254.3
2009 326.860 254.3
2010 326.855 254.3
2011 326.850 254.3
2012 326.844 254.3
2013 326.839 254.3
2014 326.834 254.3
2015 326.828 254.3
2016 326.823 254.3
2017 326.817 254.3
2018 326.812 254.3
2019 326.807 254.3
2020 326.801 254.3
2021 326.796 254.3
2022 326.790 254.3
2023 326.785 254.3
2024 326.780 254.3
2025 326.774 254.3
2026 326.769 254.3
2027 326.764 254.3
2028 326.758 254.3
2029 326.753 254.3
2030 326.747 254.3


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



 
 


wds00057%2B4549c.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
00057+4549 STT 547 AF 2007 36 254 327.9 9.59 10.19 K6 N DV 000541.03+454843.3
00057+4549 STT 547 AF 2015 38 254 328.4 8.98 10.19 K6V+M2e NO V 000541.03+454843.3
00057+4549 STT 547 AF 2018 39 254 330.0 8.98 10.19 K6V+M2e NO V 000541.03+454843.3

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