20209+1948 HJ 2954 AB

 
 
20h 20m 50.62s +19° 47' 52.1" P.A. 303.00 sep 3.1 mag 10.47,10.54 Sp A3
 
 
Coord 2000 20209+1948 Discov num HJ 2954 Comp AB Coord arcsec 2000 20 20 50.62 +19 47 52.1
Date first 1831 Date last 2018 Obs 12
Pa first 300 Pa last 302.6 P.A. Now (θ) 302.6°
Sep first 1.5 Sep last 3.075 Sep. Now (ρ) 3.075"
Mag pri 10.47 Mag sec 10.54 delta mag (ΔM) 0.07 Spectral class A3 (white)
Pri motion ra +003 Sec motion ra -062
Pri motion dec -012 Sec motion dec +034
Notes
rPM=1.126
This double is not physical.
 
 
20209+1948 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 20 20 51 +19 47 52 HJ 2954 AB 2018 12 303 3.1 10.47 10.54 0.07 <===
Show 20 20 51 +19 47 54 HJ 2954 BC 2015 5 292 23.1 10.54 13.00 2.46
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta Tycho2 1639-02174-2 Gaia DR2 1816513468172444672
 
 
WDS 20209+1948 HJ 2954 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20209+1948 HJ 2954 AB 2000 9 304 3.1 10.47 10.54 A3 D 202050.62+194752.1
20209+1948 HJ 2954 AB 2001 10 303 3.0 10.47 10.54 A3 D 202050.62+194752.1
20209+1948 HJ 2954 AB 2009 11 303 3.0 10.47 10.54 A3 D 202050.62+194752.1
20209+1948 HJ 2954 AB 2018 12 303 3.1 10.47 10.54 A3 202050.62+194752.1

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

 
 
WDS 20209+1948 HJ 2954 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20209+1948 HJ 2954 AB : MEASURES
 
 
No records found.

 
 
WDS 20209+1948 : VIRTUAL EYEPIECE
 
 

20209+1948 HJ 2954A mag 10.47 Sp A3 20209+1948 HJ 2954B sep 2.6 P.A. 327.30 mag 10.54 20209+1948 HJ 2954C sep 24.1 P.A. 296.80 mag 13 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 20209+1948 : ALADIN DSS IMAGE @ 20h 20m 50.62s +19° 47' 52.1"
 
 
 
 
WDS 20209+1948 HJ 2954 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


20209+1948  HJ 2954AB distance=0' 20209+1948  HJ 2954BC distance=1' 20216+1930  COU 327AB distance=22' 20216+1930  COU 327AB,C distance=22' 20195+1954  J   836 distance=22' 20224+2006  BUP9009 distance=29' 20196+1925  BRT2525 distance=30' 20187+2001  HDS2901 distance=33' 20183+2002  HJ  912AB distance=39' 20183+2002  HJ  912AC distance=39' 20230+2020  HDS2911 distance=44' 20227+2023  J  3080 distance=45' 20228+2023  J  3081 distance=45' 20178+1944  J  3072 distance=47' 20244+1935  STF2679AB distance=52' 20244+1935  STF2679AC distance=52' 20178+1917  TDT2146 distance=54' 20173+2009  J  3071 distance=55' 20186+1905  J   835 distance=57' 20177+2025  COU 219Aa,Ab distance=58' 20177+2025  J  2308AB distance=58' 20177+2025  J  2308AC distance=58' 20177+2025  BTG   4AD distance=58' 20177+2025  BTG   4AE distance=58' 20177+2025  J  2308BC distance=59' 20200+1848  HU  359 distance=61' 20243+1909  HU  361 distance=63' 20167+1925  GCB  52 distance=63' 20193+2047  TDT2166AB distance=64' 20167+1923  J  3068 distance=65' 20162+1927  FMR 158 distance=69' 20231+1844  LDS5905 distance=72' 20231+2052  A   288 distance=72' 20156+1958  ROE 101AB distance=75' 20156+1958  ROE 101AC distance=75' 20156+1958  ROE 101AD distance=75' 20156+1958  ROE 101AE distance=75' 20190+2058  KPP1850 distance=76' 20163+2033  HDS2888 distance=78' 20153+1937  UC  249 distance=80' 20203+1826  J  3075 distance=84' 20267+1940  GWP2949 distance=84' 20204+1825  J  3076 distance=84' 20201+1823  DAM 211AB distance=86' 20201+1823  DAM 211AC distance=86' 20222+2116  BRT2470 distance=90' 20160+1850  J   508 distance=90' 20190+2117  GRV 329 distance=93' 20158+1849  J   507 distance=94' 20154+2045  BRT2469 distance=96' 20182+1820  HU  357 distance=96' grafico limitrofi
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 20209+1948 HJ 2954 AB 303 3.1
Show 20209+1948 HJ 2954 BC 292 23.1 1
Show 20216+1930 COU 327 AB 245 0.2 22
Show 20216+1930 COU 327 AB,C 132 4.1 22
Show 20195+1954 J 836 251 3.0 22
Show 20224+2006 BUP9009 47.1 29
Show 20196+1925 BRT2525 60 1.9 30
Show 20187+2001 HDS2901 46 0.3 33
Show 20183+2002 HJ 912 AB 78 5.1 39
Show 20183+2002 HJ 912 AC 170 89.6 39
Show 20230+2020 HDS2911 333 0.4 44
Show 20227+2023 J 3080 292 7.4 45
Show 20228+2023 J 3081 6.2 45
Show 20178+1944 J 3072 91 5.8 47
Show 20244+1935 STF2679 AB 77 24.7 52
Show 20244+1935 STF2679 AC 150 38.6 52
Show 20178+1917 TDT2146 307 0.7 54
Show 20173+2009 J 3071 219 6.1 55
Show 20186+1905 J 835 45 3.4 57
Show 20177+2025 COU 219 Aa,Ab 109 0.4 58
Show 20177+2025 J 2308 AB 283 37.0 58
Show 20177+2025 J 2308 AC 284 42.5 58
Show 20177+2025 BTG 4 AD 170 33.8 58
Show 20177+2025 BTG 4 AE 267 28.9 58
Show 20177+2025 J 2308 BC 297 5.7 59
Show 20200+1848 HU 359 179 0.2 61
Show 20243+1909 HU 361 198 0.6 63
Show 20167+1925 GCB 52 53 4.3 63
Show 20193+2047 TDT2166 AB 20 2.5 64
Show 20167+1923 J 3068 133 2.6 65
Show 20162+1927 FMR 158 41 22.1 69
Show 20231+1844 LDS5905 116 3.5 72
Show 20231+2052 A 288 296 0.2 72
Show 20156+1958 ROE 101 AB 53 12.7 75
Show 20156+1958 ROE 101 AC 187 40.9 75
Show 20156+1958 ROE 101 AD 289 11.9 75
Show 20156+1958 ROE 101 AE 59 46.1 75
Show 20190+2058 KPP1850 121 14.3 76
Show 20163+2033 HDS2888 283 0.6 78
Show 20153+1937 UC 249 165 83.5 80
Show 20203+1826 J 3075 104 4.9 84
Show 20267+1940 GWP2949 267 111.9 84
Show 20204+1825 J 3076 209 5.9 84
Show 20201+1823 DAM 211 AB 166 7.0 86
Show 20201+1823 DAM 211 AC 233 7.6 86
Show 20222+2116 BRT2470 221 1.9 90
Show 20160+1850 J 508 146 2.9 90
Show 20190+2117 GRV 329 339 66.7 93
Show 20158+1849 J 507 56 6.1 94
Show 20154+2045 BRT2469 60 3.9 96
Show 20182+1820 HU 357 195 1.8 96

 
 
WDS 20209+1948 : COMPONENTS
 
 
  A B
B pa=327.3°
sep=2.61"
 
C pa=296.8°
sep=24.13"
pa=293.3°
sep=21.92"
 
 
20209+1948 A
 
 
Coord arcsec 2000 202050.62+194752.1 Mag 10.47 Spectral class A3 (white) PmRA 3.00
PmDE -12.0 Tycho2 1639-02174-2
Tycho2
Tycho2 1639-02174-2 Pflag RAmdeg 305.21018129 DEmdeg 19.79824640
PmRA -1.3 PmDE -4.0 E RAmdeg 35 E DEmdeg 41
E pmRA 1.9 E pmDE 1.9 EpRAm 1987.90 EpDEm 1986.86
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 10.674 E BTmag 0.055 VTmag 10.472
E VTmag 0.067 Prox 30 TYC T HIP
CCDM RAdeg 305.21018417 DEdeg 19.79825556 EpRA 1990 1.71
EpDE 1990 1.71 E RAdeg 35.9 E DEdeg 41.9 Posflg D
Corr 0.0
 
 
20209+1948 B
 
 
Coord arcsec 2000 202050.52+194754.3 Coord calc 202050.52+194754.3 Mag 10.54 PmRA -62.00
PmDE 34.0 Tycho2 1639-02174-1 HD 351977 Calc delta mag 0.07
Tycho2
Tycho2 1639-02174-1 Pflag RAmdeg 305.21093221 DEmdeg 19.79782032
PmRA -0.6 PmDE -3.1 E RAmdeg 33 E DEmdeg 39
E pmRA 1.9 E pmDE 1.9 EpRAm 1988.28 EpDEm 1987.23
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 10.539 E BTmag 0.050 VTmag 10.544
E VTmag 0.073 Prox 30 TYC T HIP
CCDM RAdeg 305.21093389 DEdeg 19.79782750 EpRA 1990 1.70
EpDE 1990 1.65 E RAdeg 33.9 E DEdeg 40.3 Posflg
Corr -0.1
 
 
20209+1948 C
 
 
Coord arcsec 2000 202049.09+194803.0 Mag 13 PmRA -3.00 PmDE -4.0
Calc delta mag 2.53 Calc coord yes