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Doubles in session


Current system
20018+0311
HJ 2920


Nearby doubles
15' : 20020+0257
HEI 818

22' : 20004+0303
J 2567AB

37' : 20042+0312
TDT1949

38' : 20001+0338
A 2393

42' : 20025+0232
BAL2014

60' : 20001+0405
KPP3351

60' : 20056+0330
NSN 728

62' : 20031+0213
BAL1541

63' : 19577+0259
A 2392

64' : 19578+0335
J 2293

65' : 20041+0404
J 2296

69' : 19573+0256
J 2600

72' : 20065+0305
BAL2015

83' : 20025+0149
HJ 5510

84' : 20043+0425
A 2277

84' : 20064+0225
UC 4085

84' : 20026+0148
DAM 384AB

85' : 20023+0147
DAM 383

88' : 20035+0147
BAL1542

91' : 20077+0327
HJ 2930

91' : 20049+0429
TDT1956

93' : 19589+0149
HJ 2914

96' : 20032+0444
HDS2860

97' : 19571+0207
LDS1031

97' : 20066+0207
HJ 902

97' : 20061+0159
HLD 156



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20018+0311 HJ 2920

 
 
20h 01m 46.93s +03° 10' 51.7" P.A. 165.00 sep 7.4 mag 10.90,10.90 Sp A0
 
 
Coord 2000 20018+0311 Discov num HJ 2920 Comp Coord arcsec 2000 20 01 46.93 +03 10 51.7
Date first 1830 Date last 2016 Obs 12
Pa first 172 Pa last 164.6 P.A. Now (θ) 164.6°
Sep first 4.0 Sep last 7.413 Sep. Now (ρ) 7.413"
Mag pri 10.90 Mag sec 10.90 delta mag (ΔM) 0 Spectral class A0 (white)
Pri motion ra -009 Sec motion ra -003
Pri motion dec +007 Sec motion dec -009
Notes
rPM=1.499
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquila Gaia DR2 4247185273741563264
 
 
WDS 20018+0311 HJ 2920 : 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
20018+0311 HJ 2920 2000 5 166 7.3 10.90 10.90 A0 D 200146.93+031051.7
20018+0311 HJ 2920 2011 6 165 7.3 10.90 10.90 A0 D 200146.93+031051.7
20018+0311 HJ 2920 2016 8 165 7.4 10.90 10.90 A0 200146.93+031051.7

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

 
 
WDS 20018+0311 HJ 2920 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20018+0311 HJ 2920 : MEASURES
 
 
No records found.

 
 
WDS 20018+0311 : VIRTUAL EYEPIECE
 
 

20018+0311 HJ 2920A mag 10.9 Sp A0 20018+0311 HJ 2920B sep 7.4 P.A. 164.60 mag 10.9 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 20018+0311 : ALADIN DSS IMAGE @ 20h 01m 46.93s +03° 10' 51.7"
 
 
 
 
WDS 20018+0311 HJ 2920 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20018+0311 HJ 2920 distance=0' 20020+0257 HEI 818 distance=15' 20004+0303 J 2567AB distance=22' 20004+0303 J 2567BC distance=23' 20042+0312 TDT1949 distance=37' 20001+0338 A 2393 distance=38' 20025+0232 BAL2014 distance=42' 20001+0405 KPP3351 distance=60' 20056+0330 NSN 728 distance=60' 20031+0213 BAL1541 distance=62' 19577+0259 A 2392 distance=63' 19578+0335 J 2293 distance=64' 20041+0404 J 2296 distance=65' 19573+0256 J 2600 distance=69' 20065+0305 BAL2015 distance=72' 20025+0149 HJ 5510 distance=83' 20043+0425 A 2277 distance=84' 20064+0225 UC 4085 distance=84' 20026+0148 DAM 384AB distance=84' 20026+0148 DAM 384AC distance=84' 20023+0147 DAM 383 distance=85' 20035+0147 BAL1542 distance=88' 20077+0327 HJ 2930 distance=91' 20049+0429 TDT1956 distance=91' 19589+0149 HJ 2914 distance=93' 20032+0444 HDS2860 distance=96' 19571+0207 LDS1031 distance=97' 20066+0207 HJ 902 distance=97' 20061+0159 HLD 156 distance=97' 19576+0425 BAL2957 distance=98' 20051+0435 HJ 2926 distance=98' 19552+0311 BAL2012AB distance=99' 19552+0311 DAM 359AC distance=99' 20053+0433 J 3206 distance=99' 19554+0336 BAL2525 distance=99' 19550+0308 DAM 358 distance=102' 20057+0434 J 603 distance=102' 20041+0449 HJ 2925 distance=105' 19568+0155 A 2391AB distance=106' 19568+0155 STF2601AB,C distance=106' 20068+0157 A 2278AB distance=107' 20068+0157 A 2278AC distance=107' 19580+0142 BAL1538 distance=107' 20064+0433 BAL2961 distance=108' 19561+0418 OSO 115AB distance=108' 19561+0418 OSO 115AC distance=108' 20012+0120 A 2275 distance=111' 20087+0227 UC 4099 distance=114' 19543+0244 J 1291 distance=115' 19580+0456 A 606 distance=120' 20018+0110 A 2276 distance=121' 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 20018+0311 HJ 2920 165 7.4
Show 20020+0257 HEI 818 24 2.1 15
Show 20004+0303 J 2567 AB 158 81.0 22
Show 20004+0303 J 2567 BC 295 2.2 23
Show 20042+0312 TDT1949 272 0.5 37
Show 20001+0338 A 2393 6 0.1 38
Show 20025+0232 BAL2014 35 11.6 42
Show 20001+0405 KPP3351 280 1.9 60
Show 20056+0330 NSN 728 127 8.0 60
Show 20031+0213 BAL1541 29 8.8 62
Show 19577+0259 A 2392 154 2.0 63
Show 19578+0335 J 2293 44 4.5 64
Show 20041+0404 J 2296 283 8.8 65
Show 19573+0256 J 2600 56 1.5 69
Show 20065+0305 BAL2015 346 12.4 72
Show 20025+0149 HJ 5510 28 10.9 83
Show 20043+0425 A 2277 349 1.8 84
Show 20064+0225 UC 4085 155 39.4 84
Show 20026+0148 DAM 384 AB 350 14.9 84
Show 20026+0148 DAM 384 AC 343 5.4 84
Show 20023+0147 DAM 383 103 5.2 85
Show 20035+0147 BAL1542 236 10.2 88
Show 20077+0327 HJ 2930 156 28.3 91
Show 20049+0429 TDT1956 297 0.5 91
Show 19589+0149 HJ 2914 209 13.5 93
Show 20032+0444 HDS2860 342 0.2 96
Show 19571+0207 LDS1031 246 8.5 97
Show 20066+0207 HJ 902 17 7.1 97
Show 20061+0159 HLD 156 255 1.3 97
Show 19576+0425 BAL2957 191 13.4 98
Show 20051+0435 HJ 2926 346 17.9 98
Show 19552+0311 BAL2012 AB 351 16.3 99
Show 19552+0311 DAM 359 AC 16 7.6 99
Show 20053+0433 J 3206 110 5.8 99
Show 19554+0336 BAL2525 37 5.1 99
Show 19550+0308 DAM 358 35 3.6 102
Show 20057+0434 J 603 127 3.0 102
Show 20041+0449 HJ 2925 243 31.0 105
Show 19568+0155 A 2391 AB 1 0.3 106
Show 19568+0155 STF2601 AB,C 162 7.1 106
Show 20068+0157 A 2278 AB 214 0.9 107
Show 20068+0157 A 2278 AC 355 22.5 107
Show 19580+0142 BAL1538 214 16.6 107
Show 20064+0433 BAL2961 252 9.3 108
Show 19561+0418 OSO 115 AB 183 4.0 108
Show 19561+0418 OSO 115 AC 301 7.2 108
Show 20012+0120 A 2275 146 0.4 111
Show 20087+0227 UC 4099 280 61.1 114
Show 19543+0244 J 1291 338 3.0 115
Show 19580+0456 A 606 168 0.6 120
Show 20018+0110 A 2276 59 3.8 121

 
 
WDS 20018+0311 : COMPONENTS
 
 
  A
B pa=164.6°
sep=7.41"
 
 
20018+0311 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 200146.93+031051.7 Mag 10.9 Spectral class A0 (white)
PmRA -9.00 PmDE 7.0
 
 
20018+0311 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 200147.06+031044.6 Mag 10.9 PmRA -3.00
PmDE -9.0 Calc coord yes