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Doubles in session


Current system
22347+4042
ALR 2


Nearby doubles
6' : 22345+4046
HJ 1786AB

13' : 22340+4051
ES 1697

14' : 22339+4032
COU1837

15' : 22336+4049
BU 705

23' : 22350+4104
CRB 20

27' : 22364+4023
A 1471

31' : 22365+4103
ES 263

34' : 22327+4106
TDT3577

37' : 22375+4100
ES 264

41' : 22356+4120
TDT3610

44' : 22330+4121
COU1988

45' : 22317+4109
BKO 916

49' : 22355+3953
ES 1698

49' : 22315+4115
TDT3568

50' : 22313+4113
STF2916AB

52' : 22310+4111
TDT3562

52' : 22321+4125
TDT3574

53' : 22327+4129
KPP 515

53' : 22349+4134
HJ 1788

54' : 22302+4058
ES 1696AB

57' : 22308+4007
A 1467

61' : 22324+3947
ROE 47AB

61' : 22311+3957
TDT3563

62' : 22301+4115
TDT3550

65' : 22294+4058
J 3169

66' : 22359+3938
STF2922AB



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Binary Systems
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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

22347+4042 ALR 2

 
 
22h 34m 41.61s +40° 41' 38.7" P.A. 100.00 sep 0.2 mag 12.17,12.22 Sp M6+M6
 
 
Coord 2000 22347+4042 Discov num ALR   2 Comp Coord arcsec 2000 22 34 41.61 +40 41 38.7
Date first 2006 Date last 2008 Obs 4
Pa first 99 Pa last 100.1 P.A. Now (θ) 100.1°
Sep first 0.2 Sep last 0.158 Sep. Now (ρ) 0.158"
Mag pri 12.17 Mag sec 12.22 delta mag (ΔM) 0.05 Spectral class M6+M6 (red/red)
Pri motion ra +002 Sec motion ra
Pri motion dec +001 Sec motion dec
Notes N K (See Notes, K-band or other infrared magnitudes)
Visually invisible, K-band or other infrared star : Summary line gives K-band or other infrared (>1 micron) magnitudes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Lacerta Gaia DR2 1933195501834532992
 
 
WDS 22347+4042 ALR 2 : NOTES
 
 
discov_num notes refcode
ALR 2 Allers et al. (2009) Estimate distance at 325 +72/-50 pc, giving a
projected separation of 51 +11/-8 au. Based on composite optical and
near-IR spectroscopy, spectral type for both components is M6.
Individual masses for both components, based on an age of ~1 Myr, are
estimated at 0.10 +0.075/-0.04 Msun. Alr2009
 
 
REFERENCES
 
 
refcode metd author reference
Alr2009 Ag j Allers, K.N., Liu, M.C., Shkolnik, E., Cushing, M.C., Dupuy, T.J., Matthews, G.S., 2009ApJ...697..824A
Alr2009 +E2 Reid, I.N., Cruz, K.L., & Vacca, W.D.
Alr2009 ApJ 697, 824, 2009
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
22347+4042 ALR 2 2008 4 100 0.2 12.17 12.22 M6 M6 N K 223441.61+404138.7

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

 
 
WDS 22347+4042 ALR 2 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 22347+4042 ALR 2 : MEASURES
 
 
No records found.

 
 
WDS 22347+4042 : VIRTUAL EYEPIECE
 
 

22347+4042 ALR 2A mag 12.17 Sp M6 22347+4042 ALR 2B sep 0.1 P.A. 103.20 mag 12.22 Sp M6 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 22347+4042 : ALADIN DSS IMAGE @ 22h 34m 41.61s +40° 41' 38.7"
 
 
 
 
WDS 22347+4042 ALR 2 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

22347+4042 ALR 2 distance=0' 22345+4046 COU1838Aa,Ab distance=6' 22345+4046 HJ 1786AB distance=6' 22340+4051 ES 1697 distance=13' 22339+4032 COU1837 distance=14' 22336+4049 BU 705 distance=15' 22350+4104 CRB 20 distance=23' 22364+4023 A 1471 distance=27' 22365+4103 ES 263 distance=31' 22327+4106 TDT3577 distance=34' 22375+4100 ES 264 distance=37' 22356+4120 TDT3610 distance=41' 22330+4121 COU1988 distance=44' 22317+4109 BKO 916 distance=45' 22355+3953 ES 1698 distance=49' 22315+4115 TDT3568 distance=49' 22313+4113 STF2916AB distance=50' 22313+4113 STF2916AC distance=50' 22313+4113 STF2916BC distance=51' 22313+4113 STF2916BD distance=51' 22313+4113 LMP 48BE distance=51' 22313+4113 LMP 48BF distance=51' 22310+4111 TDT3562 distance=52' 22321+4125 TDT3574 distance=52' 22327+4129 KPP 515 distance=53' 22349+4134 HJ 1788 distance=53' 22302+4058 ES 1696AB distance=54' 22302+4058 ES 1696BC distance=55' 22302+4058 GII 103Ba,Bb distance=55' 22308+4007 A 1467 distance=57' 22324+3947 ROE 47AB distance=61' 22324+3947 ROE 47AC distance=61' 22324+3947 ROE 47AD distance=61' 22324+3947 FYM 109AF distance=61' 22311+3957 TDT3563 distance=61' 22301+4115 TDT3550 distance=62' 22324+3947 ROE 47DE distance=63' 22294+4058 J 3169 distance=65' 22359+3938 CHR 112Aa,Ab distance=66' 22359+3938 STF2922AB distance=66' 22359+3938 DAL 28AG distance=66' 22359+3938 A 1469AC distance=66' 22359+3938 A 1469AE distance=66' 22359+3938 A 1469AD distance=66' 22359+3938 COM 8BF distance=66' 22359+3938 STF2922BC distance=66' 22359+3938 A 1469BD distance=66' 22359+3938 A 1469BE distance=66' 22359+3938 A 1469CD distance=66' 22359+3938 A 1469CH distance=66' 22393+4000 MLB 906AB distance=66' 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 22347+4042 ALR 2 100 0.2
Show 22345+4046 COU1838 Aa,Ab 164 1.1 6
Show 22345+4046 HJ 1786 AB 226 43.5 6
Show 22340+4051 ES 1697 338 2.9 13
Show 22339+4032 COU1837 3 0.2 14
Show 22336+4049 BU 705 154 1.8 15
Show 22350+4104 CRB 20 195 23.4 23
Show 22364+4023 A 1471 21 2.3 27
Show 22365+4103 ES 263 245 10.3 31
Show 22327+4106 TDT3577 117 1.8 34
Show 22375+4100 ES 264 1 8.1 37
Show 22356+4120 TDT3610 138 0.7 41
Show 22330+4121 COU1988 350 1.9 44
Show 22317+4109 BKO 916 146 9.0 45
Show 22355+3953 ES 1698 30 2.6 49
Show 22315+4115 TDT3568 290 1.2 49
Show 22313+4113 STF2916 AB 337 44.4 50
Show 22313+4113 STF2916 AC 340 46.0 50
Show 22313+4113 STF2916 BC 32 3.7 51
Show 22313+4113 STF2916 BD 115 16.7 51
Show 22313+4113 LMP 48 BE 78 35.4 51
Show 22313+4113 LMP 48 BF 65 70.2 51
Show 22310+4111 TDT3562 274 0.5 52
Show 22321+4125 TDT3574 272 0.6 52
Show 22327+4129 KPP 515 354 3.7 53
Show 22349+4134 HJ 1788 299 3.7 53
Show 22302+4058 ES 1696 AB 346 88.9 54
Show 22302+4058 ES 1696 BC 141 2.3 55
Show 22302+4058 GII 103 Ba,Bb 205 0.4 55
Show 22308+4007 A 1467 268 0.3 57
Show 22324+3947 ROE 47 AB 155 43.0 61
Show 22324+3947 ROE 47 AC 342 33.4 61
Show 22324+3947 ROE 47 AD 216 103.7 61
Show 22324+3947 FYM 109 AF 106 22.1 61
Show 22311+3957 TDT3563 168 0.6 61
Show 22301+4115 TDT3550 161 0.5 62
Show 22324+3947 ROE 47 DE 176 6.5 63
Show 22294+4058 J 3169 303 4.0 65
Show 22359+3938 CHR 112 Aa,Ab 138 0.0 66
Show 22359+3938 STF2922 AB 186 22.5 66
Show 22359+3938 DAL 28 AG 193 77.6 66
Show 22359+3938 A 1469 AC 167 48.8 66
Show 22359+3938 A 1469 AE 239 335.2 66
Show 22359+3938 A 1469 AD 145 81.6 66
Show 22359+3938 COM 8 BF 175 127.6 66
Show 22359+3938 STF2922 BC 154 28.3 66
Show 22359+3938 A 1469 BD 130 66.9 66
Show 22359+3938 A 1469 BE 242 324.0 66
Show 22359+3938 A 1469 CD 115 42.4 66
Show 22359+3938 A 1469 CH 255 1.7 66
Show 22393+4000 MLB 906 AB 156 2.6 66

 
 
WDS 22347+4042 : COMPONENTS
 
 
  A
B pa=103.2°
sep=0.12"
 
 
22347+4042 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 223441.61+404138.7 Mag 12.17 Spectral class M6 (red)
PmRA 2.00 PmDE 1.0
 
 
22347+4042 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 223441.62+404138.7 Mag 12.22 Spectral class M6 (red)
Calc delta mag 0.05 Calc coord yes