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Doubles in session


Current system
20440+4030
SLN 85


Nearby doubles
6' : 20444+4027
TDT2510

8' : 20436+4024
DAM1256

10' : 20432+4026
COU2421

12' : 20446+4040
HJ 1573

13' : 20446+4041
HJ 1574

16' : 20429+4036
MLB 24

18' : 20454+4023
OSO 133AB

24' : 20426+4013
TDT2488

24' : 20422+4041
MLB 23

24' : 20456+4014
TDT2519

25' : 20454+4011
TDT2518

25' : 20453+4010
COU2293

28' : 20420+4015
A 1433

31' : 20466+4020
ES 1982

31' : 20434+4001
BRT2272

34' : 20444+4103
COU2423AB

38' : 20413+4051
COU2419

42' : 20476+4038
CNT 9

43' : 20419+3956
SEI1221

45' : 20419+3953
SEI1222

46' : 20405+4010
SEI1214AB

46' : 20427+3947
TDT2491

48' : 20434+3943
TDT2497

50' : 20416+3950
COU2290

52' : 20396+4035
STT 410AB

52' : 20485+4041
ES 1682



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Binary Systems
Triple Systems
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Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.
 
 
WDS 20440+4030 : COMPONENTS
 
 
  A
B pa=197.9°
sep=8.77"
 
 
20440+4030 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 204401.03+403014.4 Mag 15.3 Spectral class DA (white dwarf)
PmRA 19.00 PmDE 47.0
 
 
20440+4030 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 204400.79+403006.1 Mag 17.9 Spectral class DAH (white dwarf)
Calc delta mag 2.6 Calc coord yes