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Doubles in session


Current system
20121+0246
BAL 2018
HD 191900


Nearby doubles
10' : 20122+0255
BAL2019

16' : 20112+0237
BAL2017

20' : 20121+0306
HEI 581

20' : 20132+0256
CRI 26

35' : 20128+0318
BAL2529

39' : 20146+0242
BAL2020

41' : 20105+0212
UC 4111

49' : 20134+0201
BAL1549

50' : 20117+0335
UC 4117

51' : 20104+0330
BAL2527

52' : 20102+0204
HJ 2933

53' : 20149+0315
BAL2021

53' : 20155+0251
HJ 910AB

54' : 20151+0218
BAL1551

54' : 20087+0227
UC 4099

61' : 20117+0146
HJ 906AB

63' : 20119+0348
STF2641

63' : 20103+0149
BAL1545

63' : 20162+0255
GWP2933

69' : 20152+0155
BAL1552

72' : 20115+0135
BAL1547

75' : 20169+0306
GWP2935

79' : 20077+0327
HJ 2930

80' : 20114+0127
BAL1546

80' : 20134+0128
AG 248AB

83' : 20096+0132
TDT2036



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.

20121+0246 BAL 2018 (HD 191900)

 
 
20h 12m 05.18s +02° 45' 39.8" P.A. 341.00 sep 17.2 mag 9.69,12.50 Sp A0
 
 
Coord 2000 20121+0246 Discov num BAL2018 Comp Coord arcsec 2000 20 12 05.18 +02 45 39.8
Date first 1909 Date last 2015 Obs 10
Pa first 343 Pa last 340.7 P.A. Now (θ) 340.7°
Sep first 16.9 Sep last 17.196 Sep. Now (ρ) 17.196"
Mag pri 9.69 Mag sec 12.50 delta mag (ΔM) 2.81 Spectral class A0 (white)
Pri motion ra +001 Sec motion ra -007
Pri motion dec -005 Sec motion dec -001
Notes
rPM=1.265
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 191900 Constellation Aquila Tycho2 0499-01171-1 Gaia DR2 4243790737743251072
HD 191900
 
 
WDS 20121+0246 BAL 2018 (HD 191900) : NOTES
 
 
No records found.

 
 
DISCOVERER
 
 
idgroup discov author
1 BAL Baillaud, R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20121+0246 BAL2018 2000 3 341 17.1 9.69 12.50 A0 D 201205.18+024539.8
20121+0246 BAL2018 2002 5 341 17.1 9.69 12.50 A0 D 201205.18+024539.8
20121+0246 BAL2018 2010 6 341 17.1 9.69 12.50 A0 201205.18+024539.8
20121+0246 BAL2018 2015 7 341 17.2 9.69 12.50 A0 201205.18+024539.8

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

 
 
WDS 20121+0246 BAL 2018 (HD 191900) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20121+0246 BAL 2018 (HD 191900) : MEASURES
 
 
No records found.

 
 
WDS 20121+0246 (HD 191900) : VIRTUAL EYEPIECE
 
 

20121+0246 BAL2018A mag 9.69 Sp A0 20121+0246 BAL2018B sep 17.2 P.A. 340.70 mag 12.5 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20121+0246 (HD 191900) : ALADIN DSS IMAGE @ 20h 12m 05.18s +02° 45' 39.8"
 
 
 
 
WDS 20121+0246 BAL 2018 (HD 191900) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20121+0246 BAL2018 distance=0' 20122+0255 BAL2019 distance=10' 20112+0237 BAL2017 distance=16' 20121+0306 HEI 581 distance=20' 20132+0256 CRI 26 distance=20' 20128+0318 BAL2529 distance=35' 20146+0242 BAL2020 distance=39' 20105+0212 UC 4111 distance=41' 20134+0201 BAL1549 distance=49' 20117+0335 UC 4117 distance=50' 20104+0330 BAL2527 distance=51' 20102+0204 HJ 2933 distance=52' 20149+0315 BAL2021 distance=53' 20155+0251 HJ 910AB distance=53' 20155+0251 HJ 910AC distance=53' 20151+0218 BAL1551 distance=54' 20087+0227 UC 4099 distance=54' 20117+0146 HJ 906AB distance=61' 20117+0146 HJ 906AC distance=61' 20117+0146 ABH 132AD distance=61' 20117+0146 ABH 132AE distance=61' 20117+0146 ABH 132AF distance=61' 20117+0146 ABH 132AG distance=61' 20117+0146 ABH 132AH distance=61' 20119+0348 STF2641 distance=63' 20103+0149 BAL1545 distance=63' 20162+0255 GWP2933 distance=63' 20152+0155 BAL1552 distance=69' 20115+0135 BAL1547 distance=72' 20169+0306 GWP2935 distance=75' 20077+0327 HJ 2930 distance=79' 20114+0127 BAL1546 distance=80' 20134+0128 AG 248AB distance=80' 20096+0132 TDT2036 distance=83' 20167+0158 UC 250 distance=85' 20065+0305 BAL2015 distance=86' 20064+0225 UC 4085 distance=88' 20066+0207 HJ 902 distance=91' 20090+0127 BAL1544 distance=93' 20068+0157 A 2278AB distance=93' 20068+0157 A 2278AC distance=93' 20113+0425 J 2300 distance=101' 20061+0159 HLD 156 distance=101' 20188+0305 UC 4144 distance=103' 20147+0109 J 2571 distance=104' 20166+0405 J 1641 distance=105' 20106+0428 UC 4113 distance=105' 20106+0102 DAM 197 distance=106' 20056+0330 NSN 728 distance=108' 20106+0057 J 2700AB distance=109' 20106+0057 DAM 196AC distance=109' 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 20121+0246 BAL2018 341 17.2 0
Show 20122+0255 BAL2019 46 6.0 10
Show 20112+0237 BAL2017 200 13.2 16
Show 20121+0306 HEI 581 160 0.8 20
Show 20132+0256 CRI 26 124 32.5 20
Show 20128+0318 BAL2529 36 11.3 35
Show 20146+0242 BAL2020 159 8.2 39
Show 20105+0212 UC 4111 272 32.7 41
Show 20134+0201 BAL1549 228 17.1 49
Show 20117+0335 UC 4117 298 41.9 50
Show 20104+0330 BAL2527 197 6.1 51
Show 20102+0204 HJ 2933 26 21.7 52
Show 20149+0315 BAL2021 344 4.5 53
Show 20155+0251 HJ 910 AB 305 18.3 53
Show 20155+0251 HJ 910 AC 243 36.6 53
Show 20151+0218 BAL1551 40 9.8 54
Show 20087+0227 UC 4099 280 61.1 54
Show 20117+0146 HJ 906 AB 156 13.3 61
Show 20117+0146 HJ 906 AC 348 34.7 61
Show 20117+0146 ABH 132 AD 142 60.1 61
Show 20117+0146 ABH 132 AE 132 78.8 61
Show 20117+0146 ABH 132 AF 40 86.7 61
Show 20117+0146 ABH 132 AG 32 62.0 61
Show 20117+0146 ABH 132 AH 235 57.4 61
Show 20119+0348 STF2641 168 20.7 63
Show 20103+0149 BAL1545 345 15.3 63
Show 20162+0255 GWP2933 48 1.3 63
Show 20152+0155 BAL1552 243 4.9 69
Show 20115+0135 BAL1547 46 5.8 72
Show 20169+0306 GWP2935 172 46.6 75
Show 20077+0327 HJ 2930 156 28.3 79
Show 20114+0127 BAL1546 95 17.5 80
Show 20134+0128 AG 248 AB 11 3.4 80
Show 20096+0132 TDT2036 76 0.5 83
Show 20167+0158 UC 250 251 25.2 85
Show 20065+0305 BAL2015 346 12.4 86
Show 20064+0225 UC 4085 155 39.4 88
Show 20066+0207 HJ 902 17 7.1 91
Show 20090+0127 BAL1544 143 6.6 93
Show 20068+0157 A 2278 AB 214 0.9 93
Show 20068+0157 A 2278 AC 355 22.5 93
Show 20113+0425 J 2300 300 4.1 101
Show 20061+0159 HLD 156 255 1.3 101
Show 20188+0305 UC 4144 347 30.8 103
Show 20147+0109 J 2571 102 3.9 104
Show 20166+0405 J 1641 215 7.4 105
Show 20106+0428 UC 4113 45 43.8 105
Show 20106+0102 DAM 197 164 4.9 106
Show 20056+0330 NSN 728 127 8.0 108
Show 20106+0057 J 2700 AB 179 6.1 109
Show 20106+0057 DAM 196 AC 73 7.5 109

 
 
WDS 20121+0246 : COMPONENTS
 
 
  A
B pa=340.7°
sep=17.19"
 
 
20121+0246 A
 
 
Name HD 191900 Coord arcsec 2000 201205.18+024539.8 Mag 9.69 Spectral class A0 (white)
PmRA 1.00 PmDE -5.0 Tycho2 0499-01171-1 HD 191900
Tycho2
Tycho2 0499-01171-1 Pflag RAmdeg 303.02161792 DEmdeg 2.76108002
PmRA 0.0 PmDE -4.5 E RAmdeg 12 E DEmdeg 13
E pmRA 1.5 E pmDE 1.5 EpRAm 1990.14 EpDEm 1989.70
Num 4 Q RAmdeg 0.9 Q DEmdeg 1.2 Q pmRA 0.9
Q pmDE 1.2 BTmag 9.918 E BTmag 0.024 VTmag 9.686
E VTmag 0.023 Prox 999 TYC T HIP
CCDM RAdeg 303.02161694 DEdeg 2.76108972 EpRA 1990 1.49
EpDE 1990 1.30 E RAdeg 11.8 E DEdeg 14.0 Posflg
Corr -0.3
CCDM
Ccdm 20121+0246 RComp Comp A Note1
Note2 Discov num DRAs -0.81 DDEs -20.3
R dRAs 65 Year Theta Rho
Obs 2 Vmag 9.6 Sp A0 PmNote
PmRA PmDE Dm number +02 4105 Cat1 BD
Name2 Cat2 HD 191900 M HD
ADS BDS M ADS BDS N IDS IDS 20071N0228A
HIC
 
 
20121+0246 B
 
 
Coord arcsec 2000 201204.80+024556.0 Mag 12.5 PmRA -7.00 PmDE -1.0
Calc delta mag 2.81 Calc coord yes
CCDM
Ccdm 20121+0246 RComp Comp B Note1
Note2 Discov num BAL2018 DRAs -1.17 DDEs -3.9
R dRAs 65 Year 1909 Theta 343 Rho 16.8
Obs 2 Vmag 12.4 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20071N0228B
HIC