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Doubles in session


Current system
20121+4618
OSO 120 AD


Nearby doubles
13' : 20130+4609
AHD 33

24' : 20099+4618
BRT2255

29' : 20147+4625
TDT2116

31' : 20139+4642
SMR 69

31' : 20136+4644
HJ 1495AB

34' : 20107+4547
HJ 1488

35' : 20108+4547
CVE 23

37' : 20123+4541
TDT2080

38' : 20135+4653
OPI 23AB

38' : 20085+4622
A 721

39' : 20143+4648
ES 27

42' : 20122+4536
ES 501

43' : 20139+4539
POP 138

44' : 20146+4652
OPI9004

44' : 20161+4605
STJ 104

44' : 20110+4536
ES 499AB

46' : 20147+4541
TDT2117

48' : 20079+4600
HDS2869

51' : 20084+4650
TDT2013

54' : 20071+4602
TDT1992

57' : 20112+4714
TDT2059

58' : 20070+4642
KPP 455

65' : 20085+4526
BRT2253

66' : 20124+4513
ES 1269

68' : 20117+4725
TDT2072

70' : 20175+4538
STF2667



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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20121+4618 OSO 120 AD

 
 
20h 12m 05.66s +46° 18' 01.7" P.A. 90.00 sep 20.2 mag 9.13,17.20 Sp K2 dist. 39.84 pc (129.96 l.y.)
 
 
Coord 2000 20121+4618 Discov num OSO 120 Comp AD Coord arcsec 2000 20 12 05.66 +46 18 01.7
Date first 1995 Date last 1995 Obs 1
Pa first 90 Pa last 90 P.A. Now (θ) 90°
Sep first 20.2 Sep last 20.2 Sep. Now (ρ) 20.2"
Mag pri 9.13 Mag sec 17.20 delta mag (ΔM) 8.07 Spectral class K2 (yellow-orange)
Pri motion ra +222 Sec motion ra -020
Pri motion dec +292 Sec motion dec -022
Notes N (See Notes)
rPM=1.081
This double is not physical.
 
 
20121+4618 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49312 20 12 06 +46 18 02 OSO 120 AB 1995 1 30 13.5 9.13 17.00 7.87
Show 49312 20 12 06 +46 18 02 OSO 120 AC 2003 3 192 16.7 9.13 15.20 6.07
Show 49312 20 12 06 +46 18 02 OSO 120 AD 1995 1 90 20.2 9.13 17.20 8.07 <===
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49312 HIP 99542 Tycho2 3559-02097-1
HD 192239 BD BD+45 3091 Distance 39.84 Distance ly 129.96
 
 
WDS 20121+4618 OSO 120 AD : NOTES
 
 
discov_num notes refcode
OSO 120 G209-020. Neither AB nor AD is a common proper motion pair, based on
comparison with POSS2 red plates Oso2004
 
 
REFERENCES
 
 
refcode metd author reference
Oso2004 C j Zapatero Osorio, M.R. & Martin, E.L. 2004A&A...419..167Z
Oso2004 +Pa A&A 419, 167, 2004
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20121+4618 OSO 120 AD 1995 1 90 20.2 9.06 17.20 N D 201205.66+461801.8

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

 
 
WDS 20121+4618 OSO 120 AD : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20121+4618 OSO 120 AD : MEASURES
 
 
No records found.

 
 
WDS 20121+4618 : VIRTUAL EYEPIECE
 
 

20121+4618 OSO 120A mag 9.13 Sp K2 20121+4618 OSO 120B sep 12.6 P.A. 21.70 mag 17 20121+4618 OSO 120C sep 16.6 P.A. 188.20 mag 15.2 20121+4618 OSO 120D sep 16.6 P.A. 188.20 mag 17.2 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 20121+4618 : ALADIN DSS IMAGE @ 20h 12m 05.66s +46° 18' 01.7"
 
 
 
 
WDS 20121+4618 OSO 120 AD : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20121+4618 OSO 120AD distance=0' 20130+4609 AHD 33 distance=13' 20099+4618 BRT2255 distance=24' 20147+4625 TDT2116 distance=29' 20136+4644 BU 1483CG distance=30' 20136+4644 BU 1483CH distance=30' 20136+4644 BU 1483CI distance=30' 20136+4644 SMR 68FJ distance=31' 20139+4642 SMR 69 distance=31' 20136+4644 SMR 68HK distance=31' 20136+4644 WRH 33Aa,Ab distance=31' 20136+4644 HJ 1495AB distance=31' 20136+4644 STFA 50AC distance=31' 20136+4644 STFA 50AD distance=31' 20136+4644 BU 1483AF distance=31' 20136+4644 GUI 30DC distance=34' 20136+4644 ES 26DE distance=34' 20107+4547 HJ 1488 distance=34' 20108+4547 CVE 23 distance=35' 20123+4541 TDT2080 distance=37' 20135+4653 OPI 23AB distance=38' 20135+4653 OPI 23AC distance=38' 20085+4622 A 721 distance=38' 20143+4648 ES 27 distance=39' 20122+4536 ES 501 distance=42' 20139+4539 POP 138 distance=43' 20146+4652 OPI9004 distance=44' 20161+4605 STJ 104 distance=44' 20110+4536 ES 499AB distance=44' 20110+4536 ES 499AC distance=44' 20147+4541 TDT2117 distance=46' 20079+4600 HDS2869 distance=48' 20084+4650 TDT2013 distance=51' 20071+4602 TDT1992 distance=54' 20112+4714 TDT2059 distance=57' 20070+4642 KPP 455 distance=58' 20085+4526 BRT2253 distance=65' 20124+4513 ES 1269 distance=66' 20117+4725 TDT2072 distance=68' 20175+4538 STF2667 distance=70' 20089+4517 TDT2022 distance=70' 20126+4729 TDT2089 distance=72' 20123+4505 ES 1268 distance=73' 20179+4705 TDT2148 distance=76' 20048+4626 TDT1954 distance=77' 20202+4620 TDT2181 distance=85' 20042+4645 HDS2861 distance=87' 20142+4744 ES 799AB distance=88' 20142+4744 ES 799AC distance=88' 20142+4744 ES 799CD distance=89' 20189+4522 ARG 37 distance=91' 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+4618 OSO 120 AB 30 13.5
Show 20121+4618 OSO 120 AC 192 16.7
Show 20121+4618 OSO 120 AD 90 20.2
Show 20130+4609 AHD 33 40 19.0 13
Show 20099+4618 BRT2255 247 5.2 24
Show 20147+4625 TDT2116 74 1.0 29
Show 20136+4644 BU 1483 CG 95 37.9 30
Show 20136+4644 BU 1483 CH 62 60.6 30
Show 20136+4644 BU 1483 CI 136 60.2 30
Show 20136+4644 SMR 68 FJ 218 4.0 31
Show 20139+4642 SMR 69 62 7.0 31
Show 20136+4644 SMR 68 HK 263 9.0 31
Show 20136+4644 WRH 33 Aa,Ab 111 0.0 31
Show 20136+4644 HJ 1495 AB 328 36.5 31
Show 20136+4644 STFA 50 AC 173 108.6 31
Show 20136+4644 STFA 50 AD 322 336.7 31
Show 20136+4644 BU 1483 AF 168 43.5 31
Show 20136+4644 GUI 30 DC 150 431.8 34
Show 20136+4644 ES 26 DE 252 36.3 34
Show 20107+4547 HJ 1488 133 13.3 34
Show 20108+4547 CVE 23 109 7.0 35
Show 20123+4541 TDT2080 325 0.6 37
Show 20135+4653 OPI 23 AB 283 8.4 38
Show 20135+4653 OPI 23 AC 330 97.1 38
Show 20085+4622 A 721 43 4.0 38
Show 20143+4648 ES 27 337 4.1 39
Show 20122+4536 ES 501 130 1.6 42
Show 20139+4539 POP 138 42 0.6 43
Show 20146+4652 OPI9004 256 8.0 44
Show 20161+4605 STJ 104 316 1.4 44
Show 20110+4536 ES 499 AB 331 13.6 44
Show 20110+4536 ES 499 AC 85 25.7 44
Show 20147+4541 TDT2117 319 0.4 46
Show 20079+4600 HDS2869 4 2.9 48
Show 20084+4650 TDT2013 29 2.8 51
Show 20071+4602 TDT1992 121 1.4 54
Show 20112+4714 TDT2059 177 0.8 57
Show 20070+4642 KPP 455 7 4.8 58
Show 20085+4526 BRT2253 285 5.0 65
Show 20124+4513 ES 1269 34 5.2 66
Show 20117+4725 TDT2072 229 0.4 68
Show 20175+4538 STF2667 224 8.0 70
Show 20089+4517 TDT2022 198 1.0 70
Show 20126+4729 TDT2089 3 0.3 72
Show 20123+4505 ES 1268 150 8.2 73
Show 20179+4705 TDT2148 51 1.1 76
Show 20048+4626 TDT1954 287 0.5 77
Show 20202+4620 TDT2181 132 0.6 85
Show 20042+4645 HDS2861 109 16.7 87
Show 20142+4744 ES 799 AB 14 2.2 88
Show 20142+4744 ES 799 AC 41 34.5 88

 
 
WDS 20121+4618 : COMPONENTS
 
 
  A B C
B pa=21.7°
sep=12.59"
 
C pa=188.2°
sep=16.56"
pa=194.1°
sep=28.95"
 
D pa=0.0°
sep=0.00"
pa=141.5°
sep=14.93"
pa=44.9°
sep=23.13"
 
 
20121+4618 A
 
 
Coord arcsec 2000 201205.66+461801.7 Mag 9.13 Spectral class K2 (yellow-orange) PmRA 222.00
PmDE 292.0 SAO 49312 HIP 99542 Tycho2 3559-02097-1
HD 192239 BD BD+45 3091
Tycho2
Tycho2 3559-02097-1 Pflag RAmdeg 303.02361095 DEmdeg 46.30049321
PmRA 221.9 PmDE 292.0 E RAmdeg 12 E DEmdeg 13
E pmRA 0.9 E pmDE 0.9 EpRAm 1989.03 EpDEm 1988.75
Num 10 Q RAmdeg 1.2 Q DEmdeg 0.5 Q pmRA 1.1
Q pmDE 0.4 BTmag 10.114 E BTmag 0.030 VTmag 9.133
E VTmag 0.018 Prox 655 TYC T HIP 99542
CCDM RAdeg 303.02287583 DEdeg 46.29982722 EpRA 1990 1.76
EpDE 1990 1.78 E RAdeg 12.9 E DEdeg 13.7 Posflg
Corr 0.1
SAO
SAO 49312 DelFlag RA1950 PmRA1950 0.0185
DE1950 PmDE1950 0.302 Vmag 8.6 SpType K2
Double code Source 3 CatNum 1588 DM BD+45 3091
DMcomp BDsup HD 192239 M HD 0
GC RA1950rad 5.28175385 DE1950rad 0.80539298 PmRA2000 0.0188
PmDE2000 0.301
Hipparcos
Catalog H HIP 99542 Proxy RAhms 20 12 05.48
DEdms +46 17 59.3 Vmag 9.06 VarFlag R Vmag G
RAdeg 303.023 DEdeg 46.2998 AstroRef Plx 24.28
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 192239 BD BD+45 3091
CD CP Dm number +45 3091 VIred 0.84
SpType K2 R SpType Coord arcsec 2000 201205.48+461759.3
Hipparcos 2
HIP 99542 Sn 5 So 0 Nc 1
RArad 5.2887461371 DErad 0.8080838262 Plx 25.1 PmRA 224.28
PmDE 291.78 E RArad 0.67 E DErad 0.65 E Plx 0.8
E pmRA 0.98 E pmDE 0.7 Hpmag 9.2115 E Hpmag 0.0017
SHp 0.015 VA 0 BV 0.81 E BV 0.02
VI 0.85
 
 
20121+4618 B
 
 
Coord arcsec 2000 201206.11+461813.4 Mag 17 Calc delta mag 7.87 Calc coord yes
 
 
20121+4618 C
 
 
Coord arcsec 2000 201205.43+461745.3 Mag 15.2 Calc delta mag 6.07 Calc coord yes
 
 
20121+4618 D
 
 
Coord arcsec 2000 201207.01+461801.7 Mag 17.2 PmRA -20.00 PmDE -22.0
Calc delta mag 8.07 Calc coord yes