20275-0206 S 749 AB (HD 194765)

 
 
20h 27m 27.56s -02° 06' 10.5" P.A. 189.00 sep 60.0 mag 6.76,7.51 Sp F5V+G2V+ dist. 46.9 pc (152.99 l.y.)
 
 
Coord 2000 20275-0206 Discov num S   749 Comp AB Coord arcsec 2000 20 27 27.56 -02 06 10.5
Date first 1800 Date last 2022 Obs 45
Pa first 193 Pa last 188.5 P.A. Now (θ) 188.5°
Sep first 61.5 Sep last 59.96 Sep. Now (ρ) 59.96"
Mag pri 6.76 Mag sec 7.51 delta mag (ΔM) 0.75 Spectral class F5V+G2V+ (yellow-white/yellow)
Pri motion ra -066 Sec motion ra -062
Pri motion dec -068 Sec motion dec -069
Notes N T (See Notes, Parallax indicates physical)
rPM=0.044 (< 0.3, Physical double)
This double is physical.
 
 
20275-0206 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 144450 20 27 28 -02 06 10 LSC 89 Aa,Ab 2015 4 197 0.0 7.30 7.70 0.40
Show HD 194765 144450 20 27 28 -02 06 10 S 749 AB 2022 45 189 60.0 6.76 7.51 0.75 <===
Show 144450 20 27 28 -02 06 10 S 749 AC 2022 11 329 45.6 6.76 11.30 4.54
Show 144450 20 27 28 -02 06 10 S 749 AD 2022 10 269 89.9 6.76 12.37 5.61
Show 20 27 26 -02 05 33 S 749 CD 2022 13 239 77.5 10.80 11.00 0.20
Show 20 27 26 -02 05 33 S 749 CE 2022 7 197 18.8 10.80 13.70 2.90
Show 20 27 21 -02 06 14 S 749 DF 2022 8 26 6.7 11.00 13.60 2.60
Septuple system
6 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 194765 Constellation Aquila SAO 144450 HIP 100895
Tycho2 5167-00198-1 Gaia DR2 4228891667990334976 HD 194765 GC 28446
BD BD-02 5282 Distance 46.9 Distance ly 152.99
 
 
WDS 20275-0206 S 749 AB (HD 194765) : NOTES
 
 
discov_num notes refcode
S 749 AB: B is BD-02@5282.
AB: HJL 280. HJL1986
AB: SHY 331. Bayesian analysis by Shaya & Olling (2011) indicates very Shy2011
high (near 100%) probability pair is physical.
This cannot be the close 160.8-d spectroscopic binary. Grf2014b
AB: A is SB2, P=160.83d (Halbwachs et al. 2012) HJL2012b
AC: H 5 35. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
Grf2014b not - Griffin, R.F. 2014Obs...134..109G
Grf2014b Observatory 134, 109, 2014
HJL1986 Pa - Halbwachs, J.L. 1986A&AS...66..131H
HJL1986 A&AS 66, 131, 1986
HJL1986 (Possible CPM pairs from AGK2/3. Coarse astrometry, incl. mean 1950 dates, added
HJL1986 only for previously unknown pairs. Table 1: HJL 1 - 326, Table 2: HJL1001 - 1113)
HJL2012b not - Halbwachs, J.L., Mayor, M., & Udry, S. 2012MNRAS.422...14H
HJL2012b MNRAS 422, 14, 2012
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Shy2011 - Shaya, E.J. & Olling, R. 2011ApJS..192....2S
Shy2011 ApJS 192, 2, 2011
Shy2011 (Statistical analysis of probability that wide Hipparcos pairs are physical. Pairs
Shy2011 added to WDS only if probability 90% or greater.)
 
 
DISCOVERER
 
 
idgroup discov author
1 LSC Lowell-Southern Connecticut
3 S South, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20275-0206 S 749 AB 2002 31 189 59.7 6.76 7.51 F7V NZDV 202727.56-020610.5
20275-0206 S 749 AB 2012 33 188 59.7 6.76 7.51 F7V NZDV 202727.56-020610.5
20275-0206 S 749 AB 2015 36 189 59.9 6.76 7.51 F7V+G2V+ NZ V 202727.56-020610.5
20275-0206 S 749 AB 2016 37 188 60.0 6.76 7.51 F7V+G2V+ NZ V 202727.56-020610.5
20275-0206 S 749 AB 2017 38 189 59.8 6.76 7.51 F7V+G2V+ NZ V 202727.56-020610.5
20275-0206 S 749 AB 2018 40 189 59.8 6.76 7.51 F7V+G2V+ NZ V 202727.56-020610.5
20275-0206 S 749 AB 2019 43 189 60.1 6.76 7.51 F7V+G2V+ NT 202727.56-020610.5
20275-0206 S 749 AB 2022 45 189 60.0 6.76 7.51 F5V+G2V+ NT 202727.56-020610.5

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WDS 20275-0206 S 749 AB (HD 194765) : VISUAL OBSERVATIONS REPORTS
 
 
Show date username difficulty separation pa_estim interest notes
Show 23/08/24 Daedalus1 mean difficulty separated 189   A very wide pair of yellowish white stars.

 
 
WDS 20275-0206 S 749 AB (HD 194765) : MEASURES
 
 
Records found: 1
Show date username difficulty sep sep_sigma pa pa_sigma delta_mag # notes
Show 23/08/24 Daedalus1 mean difficulty 60.21 0.07 189.00 0.00 0.78 12 Seeing: Pickering 8, excellent
 
 
WDS 20275-0206 (HD 194765) : VIRTUAL EYEPIECE
 
 

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WDS 20275-0206 (HD 194765) : ALADIN DSS IMAGE @
 
 
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.