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Doubles in session


Current system
20441+0044
BAL 1218


Nearby doubles
17' : 20445+0029
BAL1219

18' : 20440+0049
HJ 923

20' : 20433+0059
SLN 39

29' : 20454+0023
A 876

30' : 20425+0100
TDT2487

34' : 20435+0011
GRV1233

36' : 20434-0012
J 3346

40' : 20420+0021
UC 4262

46' : 20414+0105
GWP2985

47' : 20416+0017
UC 4258AB

50' : 20409-0036
A 874

52' : 20472+0021
CBL 529

56' : 20475+0105
BAL1220

58' : 20403+0041
A 2284

58' : 20405-0023
SKF1768

61' : 20481+0053
CVR 873

61' : 20472-0006
BAL 924

66' : 20478+0007
SKF2612

67' : 20409+0128
BAL1568

68' : 20486-0055
BAL 616

68' : 20406-0002
SLW1226

70' : 20401-0009
GRV1232

71' : 20400+0118
A 2283AB

71' : 20396+0025
UC 4246

73' : 20394+0029
HJ 2984AB

73' : 20485+0012
UC 4295



Selections
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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.

20441+0044 BAL 1218

 
 
20h 44m 07.53s +00° 43' 42.7" P.A. 229.00 sep 3.4 mag 12.00,12.50
 
 
Coord 2000 20441+0044 Discov num BAL1218 Comp Coord arcsec 2000 20 44 07.53 +00 43 42.7
Date first 1909 Date last 2015 Obs 6
Pa first 231 Pa last 229.4 P.A. Now (θ) 229.4°
Sep first 3.4 Sep last 3.387 Sep. Now (ρ) 3.387"
Mag pri 12.00 Mag sec 12.50 delta mag (ΔM) 0.5 Spectral class
Pri motion ra +012 Sec motion ra +011
Pri motion dec -008 Sec motion dec -008
Notes
rPM=0.069 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Aquarius Gaia DR2 4228242814393423104
 
 
WDS 20441+0044 BAL 1218 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Bal1924 Ma - Baillaud, R. 1924JO......7..117B
Bal1924 J. Obs. 7, 117, 1924
Bal1925 Ma - Baillaud, R. 1925JO......8...53B
Bal1925 J. Obs. 8, 53, 1925
Bal1925b Ma j Baillaud, R. 1925JO......8...56B
Bal1925b J. Obs. 8, 56, 1925
Bal1926 Ma - Baillaud, R. 1926JO......9..129P
Bal1926 J. Obs. 9, 129, 1926
Bal1937A Ma - Baillaud, R. 1937AnLei..18....1S
Bal1937A cited by Strand (Ann. Sterrew. Leiden 18, 1937)
Bal1944 C - Baillaud, R. 1944AnBes...3...33B
Bal1944 +Pa Ann. Obs. Besancon New Ser. 3, 33, 1943
Bal1944 +Po
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20441+0044 BAL1218 2001 2 228 3.2 10.90 11.40 204404.07+004406.2
20441+0044 BAL1218 2015 6 229 3.4 12.00 12.50 204407.53+004342.7

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

 
 
WDS 20441+0044 BAL 1218 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20441+0044 BAL 1218 : MEASURES
 
 
No records found.

 
 
WDS 20441+0044 : VIRTUAL EYEPIECE
 
 

20441+0044 BAL1218A mag 12 20441+0044 BAL1218B sep 3.4 P.A. 229.40 mag 12.5 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20441+0044 : ALADIN DSS IMAGE @ 20h 44m 07.53s +00° 43' 42.7"
 
 
 
 
WDS 20441+0044 BAL 1218 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20441+0044 BAL1218 distance=1' 20445+0029 BAL1219 distance=17' 20440+0049 HJ 923 distance=18' 20433+0059 SLN 39 distance=20' 20454+0023 A 876 distance=29' 20425+0100 TDT2487 distance=30' 20435+0011 GRV1233 distance=34' 20434-0012 J 3346 distance=36' 20420+0021 UC 4262 distance=40' 20414+0105 GWP2985 distance=46' 20416+0017 UC 4258AB distance=47' 20409-0036 A 874 distance=50' 20472+0021 CBL 529 distance=52' 20475+0105 BAL1220 distance=56' 20403+0041 A 2284 distance=58' 20405-0023 SKF1768 distance=58' 20481+0053 CVR 873 distance=61' 20472-0006 BAL 924 distance=61' 20478+0007 SKF2612 distance=66' 20409+0128 BAL1568 distance=67' 20486-0055 BAL 616 distance=68' 20406-0002 SLW1226 distance=68' 20401-0009 GRV1232 distance=70' 20400+0118 A 2283AB distance=71' 20396+0025 UC 4246 distance=71' 20394+0029 FYM 187CD distance=72' 20394+0029 HJ 2984AB distance=73' 20394+0029 HJ 2984AC distance=73' 20394+0029 FYM 187AE distance=73' 20485+0012 UC 4295 distance=73' 20414+0147 BAL1570 distance=76' 20390-0035 BVD 131 distance=77' 20393+0112 BAL1217 distance=78' 20455+0201 BAL1571 distance=80' 20418+0156 GWP2986 distance=80' 20434+0204 GWP2989 distance=82' 20485+0143 RST5471 distance=89' 20495-0006 BAL 925 distance=91' 20389+0128 KPP3420 distance=91' 20459+0211 GRV 377 distance=93' 20384+0000 J 2318AB distance=96' 20384+0000 J 2318AC distance=96' 20427+0217 GRV 370 distance=97' 20419+0218 UC 252 distance=100' 20373-0039 J 2317 distance=101' 20373+0041 UC 4236 distance=103' 20413+0216 BAL1569 distance=103' 20508-0020 BAL 926 distance=104' 20509+0101 TDT2577Aa,Ab distance=104' 20509+0101 RST5472AB distance=104' 20510-0038 J 1711 distance=106' 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 20441+0044 BAL1218 229 3.4 1
Show 20445+0029 BAL1219 214 17.3 17
Show 20440+0049 HJ 923 62 7.0 18
Show 20433+0059 SLN 39 233 19.0 20
Show 20454+0023 A 876 68 0.6 29
Show 20425+0100 TDT2487 302 1.1 30
Show 20435+0011 GRV1233 104 10.5 34
Show 20434-0012 J 3346 106 1.8 36
Show 20420+0021 UC 4262 221 44.1 40
Show 20414+0105 GWP2985 352 30.4 46
Show 20416+0017 UC 4258 AB 3 46.5 47
Show 20409-0036 A 874 345 1.9 50
Show 20472+0021 CBL 529 43 49.8 52
Show 20475+0105 BAL1220 193 21.1 56
Show 20403+0041 A 2284 287 4.8 58
Show 20405-0023 SKF1768 18 1.5 58
Show 20481+0053 CVR 873 324 12.3 61
Show 20472-0006 BAL 924 128 15.4 61
Show 20478+0007 SKF2612 63 1.0 66
Show 20409+0128 BAL1568 346 8.8 67
Show 20486-0055 BAL 616 206 2.4 68
Show 20406-0002 SLW1226 226 166.7 68
Show 20401-0009 GRV1232 144 24.2 70
Show 20400+0118 A 2283 AB 350 2.3 71
Show 20396+0025 UC 4246 52 20.8 71
Show 20394+0029 FYM 187 CD 122 20.2 72
Show 20394+0029 HJ 2984 AB 225 65.0 73
Show 20394+0029 HJ 2984 AC 30 65.9 73
Show 20394+0029 FYM 187 AE 118 35.2 73
Show 20485+0012 UC 4295 196 69.5 73
Show 20414+0147 BAL1570 12 5.1 76
Show 20390-0035 BVD 131 133 30.3 77
Show 20393+0112 BAL1217 2 7.9 78
Show 20455+0201 BAL1571 307 6.8 80
Show 20418+0156 GWP2986 350 16.1 80
Show 20434+0204 GWP2989 131 44.7 82
Show 20485+0143 RST5471 14 0.6 89
Show 20495-0006 BAL 925 175 19.7 91
Show 20389+0128 KPP3420 241 6.3 91
Show 20459+0211 GRV 377 354 27.3 93
Show 20384+0000 J 2318 AB 150 5.6 96
Show 20384+0000 J 2318 AC 119 14.9 96
Show 20427+0217 GRV 370 313 25.4 97
Show 20419+0218 UC 252 164 62.6 100
Show 20373-0039 J 2317 120 6.1 101
Show 20373+0041 UC 4236 284 17.8 103
Show 20413+0216 BAL1569 62 11.2 103
Show 20508-0020 BAL 926 239 2.4 104
Show 20509+0101 TDT2577 Aa,Ab 104 0.5 104
Show 20509+0101 RST5472 AB 77 3.7 104
Show 20510-0038 J 1711 222 8.4 106

 
 
WDS 20441+0044 : COMPONENTS
 
 
  A
B pa=229.4°
sep=3.39"
 
 
20441+0044 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204407.53+004342.7 Mag 12 PmRA 12.00
PmDE -8.0
 
 
20441+0044 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204407.36+004340.5 Mag 12.5 PmRA 11.00
PmDE -8.0 Calc delta mag 0.5 Calc coord yes