20387+3838 STF 2708 AC

 
 
20h 38m 40.19s +38° 38' 06.3" P.A. 336.00 sep 40.6 mag 6.83,13.70 Sp G2V dist. 27.16 pc (88.6 l.y.)
 
 
Coord 2000 20387+3838 Discov num STF2708 Comp AC Coord arcsec 2000 20 38 40.19 +38 38 06.3
Date first 1878 Date last 2015 Obs 8
Pa first 48 Pa last 335.6 P.A. Now (θ) 335.6°
Sep first 15.0 Sep last 40.598 Sep. Now (ρ) 40.598"
Mag pri 6.83 Mag sec 13.70 delta mag (ΔM) 6.87 Spectral class G2V (yellow)
Pri motion ra +201 Sec motion ra -000
Pri motion dec -193 Sec motion dec +009
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=1.023
This double is not physical.
 
 
20387+3838 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 196850 70321 20 38 40 +38 38 06 STF 2708 AB 2018 133 323 57.9 6.83 8.67 1.84
Show 70321 20 38 40 +38 38 06 STF 2708 AC 2015 8 336 40.6 6.83 13.70 6.87 <===
Show 70321 20 38 40 +38 38 06 STF 2708 AD 2015 16 231 115.6 6.83 11.26 4.43
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 70321 HIP 101875 Tycho2 3153-00705-1
Gaia DR2 2063583390317759616 HD 196850 GL Gl 794.3 BD BD+38 4172
Distance 27.16 Distance ly 88.6
 
 
WDS 20387+3838 STF 2708 AC : NOTES
 
 
discov_num notes refcode
STF2708 AB and AC: Optical pairs, based on study of relative motion of the
components using the method of apparent motion parameters. Kiy2008
AB: H N 87. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20387+3838 STF2708 AC 1911 5 14 16.9 6.83 13.30 G2V N 203840.04+383808.0
20387+3838 STF2708 AC 2000 7 338 36.6 6.83 13.70 G2V NU 203840.04+383808.0
20387+3838 STF2708 AC 2013 8 336 40.1 6.83 13.70 G2V NU 203840.04+383808.0
20387+3838 STF2708 AC 2015 9 336 40.6 6.83 13.70 G2V NU 203840.19+383806.3

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 20387+3838 STF 2708 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20387+3838 STF 2708 AC : MEASURES
 
 
No records found.

 
 
WDS 20387+3838 : VIRTUAL EYEPIECE
 
 

virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20387+3838 : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.