20120+2100 HJ 907 AC

 
 
20h 12m 02.35s +20° 59' 06.1" P.A. 229.00 sep 20.1 mag 9.77,14.30 Sp K2
 
 
Coord 2000 20120+2100 Discov num HJ  907 Comp AC Coord arcsec 2000 20 12 02.35 +20 59 06.1
Date first 1903 Date last 2015 Obs 9
Pa first 245 Pa last 229.2 P.A. Now (θ) 229.2°
Sep first 8.8 Sep last 20.111 Sep. Now (ρ) 20.111"
Mag pri 9.77 Mag sec 14.30 delta mag (ΔM) 4.53 Spectral class K2 (yellow-orange)
Pri motion ra +066 Sec motion ra
Pri motion dec +072 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
20120+2100 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 351541 20 12 02 +20 59 06 HJ 907 AB 2015 18 137 5.7 9.77 10.33 0.56
Show 20 12 02 +20 59 06 HJ 907 AC 2015 9 229 20.1 9.77 14.30 4.53 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagitta Tycho2 1630-00880-1 Gaia DR2 1828856383861873920 HD 351541
 
 
WDS 20120+2100 HJ 907 AC : 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
20120+2100 HJ 907 AC 1903 1 245 8.8 9.77 14.30 K2 201202.35+205906.1
20120+2100 HJ 907 AC 2008 2 230 19.4 9.77 14.30 K2 201202.35+205906.1
20120+2100 HJ 907 AC 2015 5 229 20.1 9.77 14.30 K2 201202.35+205906.1

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

 
 
WDS 20120+2100 HJ 907 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20120+2100 HJ 907 AC : MEASURES
 
 
No records found.

 
 
WDS 20120+2100 : VIRTUAL EYEPIECE
 
 

20120+2100 HJ  907A mag 9.77 Sp K2 20120+2100 HJ  907B sep 5.5 P.A. 139.20 mag 10.33 20120+2100 HJ  907C sep 19.4 P.A. 227.20 mag 14.3 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.

Radius:
Components only
 
 
WDS 20120+2100 : ALADIN DSS IMAGE @ 20h 12m 02.35s +20° 59' 06.1"
 
 
 
 
WDS 20120+2100 HJ 907 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


20120+2100  HJ  907AC distance=0' 20113+2056  J  1875 distance=10' 20124+2043  NSN 730 distance=17' 20131+2107  GRV 323 distance=17' 20113+2121  HO  587 distance=25' 20124+2124  DAM1255 distance=26' 20099+2100  S   737 distance=30' 20099+2055  STF2637AB distance=30' 20099+2055  STF2637AD distance=30' 20099+2055  STF2637AC distance=30' 20099+2055  STF2637BC distance=30' 20108+2029  HDS2875 distance=35' 20119+2020  J  1876 distance=40' 20102+2131  TDT2042 distance=42' 20136+2021  BU 1484 distance=45' 20138+2021  HJ 2941 distance=45' 20115+2013  GRV 320 distance=47' 20153+2120  J  3067 distance=50' 20154+2045  BRT2469 distance=50' 20132+2145  J  1194 distance=50' 20136+2145  J   834 distance=51' 20086+2041  BRT2467 distance=52' 20082+2105  J  1168 distance=55' 20163+2033  HDS2888 distance=66' 20093+2004  HU  355 distance=68' 20072+2106  STF2631 distance=68' 20148+2159  HDS2886 distance=71' 20166+2134  BRT2524 distance=73' 20076+2139  TDT2000 distance=75' 20123+2215  J  3057 distance=77' 20134+2214  J  3061 distance=78' 20114+2217  COU 217AB distance=79' 20114+2217  COU 217AC distance=79' 20156+1958  ROE 101AB distance=79' 20156+1958  ROE 101AC distance=79' 20156+1958  ROE 101AD distance=79' 20156+1958  ROE 101AE distance=79' 20141+2213  STF2655AB distance=80' 20141+2213  STF2655AC distance=80' 20112+2222  GRV 319 distance=84' 20124+2224  GRV 322AB distance=86' 20124+2224  GRV 322AC distance=86' 20177+2025  J  2308BC distance=87' 20134+2224  TDT2101 distance=87' 20177+2025  COU 219Aa,Ab distance=87' 20177+2025  J  2308AB distance=87' 20177+2025  J  2308AC distance=87' 20177+2025  BTG   4AD distance=87' 20177+2025  BTG   4AE distance=87' 20176+2142  TDT2144 distance=89' 20173+2009  J  3071 distance=90' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 20120+2100 HJ 907 AB 137 5.7
Show 20120+2100 HJ 907 AC 229 20.1
Show 20113+2056 J 1875 100 8.8 10
Show 20124+2043 NSN 730 146 3.2 17
Show 20131+2107 GRV 323 204 19.0 17
Show 20113+2121 HO 587 65 11.5 25
Show 20124+2124 DAM1255 23 7.1 26
Show 20099+2100 S 737 128 101.0 30
Show 20099+2055 STF2637 AB 331 11.6 30
Show 20099+2055 STF2637 AD 226 172.8 30
Show 20099+2055 STF2637 AC 222 91.9 30
Show 20099+2055 STF2637 BC 215 95.7 30
Show 20108+2029 HDS2875 231 0.3 35
Show 20119+2020 J 1876 99 8.2 40
Show 20102+2131 TDT2042 359 0.6 42
Show 20136+2021 BU 1484 323 23.7 45
Show 20138+2021 HJ 2941 109 6.2 45
Show 20115+2013 GRV 320 152 31.3 47
Show 20153+2120 J 3067 140 6.3 50
Show 20154+2045 BRT2469 60 3.9 50
Show 20132+2145 J 1194 115 6.3 50
Show 20136+2145 J 834 277 2.3 51
Show 20086+2041 BRT2467 55 4.4 52
Show 20082+2105 J 1168 193 0.9 55
Show 20163+2033 HDS2888 283 0.6 66
Show 20093+2004 HU 355 352 1.2 68
Show 20072+2106 STF2631 339 4.7 68
Show 20148+2159 HDS2886 64 1.0 71
Show 20166+2134 BRT2524 288 5.2 73
Show 20076+2139 TDT2000 71 0.7 75
Show 20123+2215 J 3057 104 6.7 77
Show 20134+2214 J 3061 267 5.4 78
Show 20114+2217 COU 217 AB 343 1.5 79
Show 20114+2217 COU 217 AC 291 1.5 79
Show 20156+1958 ROE 101 AB 53 12.7 79
Show 20156+1958 ROE 101 AC 187 40.9 79
Show 20156+1958 ROE 101 AD 289 11.9 79
Show 20156+1958 ROE 101 AE 59 46.1 79
Show 20141+2213 STF2655 AB 3 6.2 80
Show 20141+2213 STF2655 AC 154 60.5 80
Show 20112+2222 GRV 319 352 69.3 84
Show 20124+2224 GRV 322 AB 187 54.2 86
Show 20124+2224 GRV 322 AC 180 94.9 86
Show 20177+2025 J 2308 BC 297 5.7 87
Show 20134+2224 TDT2101 334 0.5 87
Show 20177+2025 COU 219 Aa,Ab 109 0.4 87
Show 20177+2025 J 2308 AB 283 37.0 87
Show 20177+2025 J 2308 AC 284 42.5 87
Show 20177+2025 BTG 4 AD 170 33.8 87
Show 20177+2025 BTG 4 AE 267 28.9 87
Show 20176+2142 TDT2144 72 0.7 89

 
 
WDS 20120+2100 : COMPONENTS
 
 
  A B
B pa=139.2°
sep=5.49"
 
C pa=227.2°
sep=19.36"
pa=243.2°
sep=19.94"
 
 
20120+2100 A
 
 
Name HD 351541 Coord arcsec 2000 201202.35+205906.1 Mag 9.77 Spectral class K2 (yellow-orange)
PmRA 66.00 PmDE 72.0 Tycho2 1630-00880-1 HD 351541
Tycho2
Tycho2 1630-00880-1 Pflag RAmdeg 303.00981105 DEmdeg 20.98504233
PmRA 65.1 PmDE 74.0 E RAmdeg 20 E DEmdeg 27
E pmRA 1.1 E pmDE 1.1 EpRAm 1988.20 EpDEm 1985.05
Num 4 Q RAmdeg 1.5 Q DEmdeg 2.2 Q pmRA 1.5
Q pmDE 2.3 BTmag 10.725 E BTmag 0.048 VTmag 9.774
E VTmag 0.030 Prox 59 TYC T HIP
CCDM RAdeg 303.00965111 DEdeg 20.98486583 EpRA 1990 1.76
EpDE 1990 1.42 E RAdeg 19.5 E DEdeg 27.6 Posflg
Corr 0.3
 
 
20120+2100 B
 
 
Coord arcsec 2000 201202.61+205901.9 Mag 10.33 PmRA -16.00 PmDE 108.0
Calc delta mag 0.56 Calc coord yes
 
 
20120+2100 C
 
 
Coord arcsec 2000 201201.34+205853.0 Mag 14.3 Calc delta mag 4.53 Calc coord yes