18037-2423 SBE 1 Aa,Ab

 
 
18h 03m 40.33s -24° 22' 42.7" P.A. 222.00 sep 0.0 mag 7.60,7.70 Sp O7.5+B0
 
 
Coord 2000 18037-2423 Discov num SBE   1 Comp Aa,Ab Coord arcsec 2000 18 03 40.33 -24 22 42.7
Date first 2014 Date last 2014 Obs 1
Pa first 222 Pa last 222 P.A. Now (θ) 222°
Sep first 0.0 Sep last 0.002 Sep. Now (ρ) 0.002"
Mag pri 7.60 Mag sec 7.70 delta mag (ΔM) 0.1 Spectral class O7.5+B0 (blue/blue-white)
Pri motion ra +002 Sec motion ra -008
Pri motion dec -004 Sec motion dec +006
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
rPM=1.414
This double is not physical.
 
 
18037-2423 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 18 03 40 -24 22 43 SBE 1 Aa,Ab 2014 1 222 0.0 7.60 7.70 0.10 <===
Show 18 03 40 -24 22 43 AEN 1 AB 2007 6 9 3.5 10.30
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius Gaia DR2 4066021251107926272
 
 
WDS 18037-2423 SBE 1 Aa,Ab : NOTES
 
 
discov_num notes refcode
SBE 1 Aa,Ab: Herschel 36 is a young massive system located at 1.3kpc in the
Hourglass high-mass star-forming region in the central part of the M8
nebula. The Ab component is comprised of two stars, spectral types O9V
and B0.5V, in a close orbit with period 1.54d. The Aa component is of
type O9.5V, and is the most luminous star of the system, dominating
its ionizing flux. Aa and Ab are in an orbit with estimated period
500d and projected semi-major axis 3.5mas. The minimum spectrosopic
predicted mass of the Aa+Ab1+Ab2 system is 45,2 Msun. Arias et al.
(2010, ApJ 710, L30) label the components A, B1, and B2 in their
spectroscopic study of the system. SBe2014
 
 
REFERENCES
 
 
refcode metd author reference
SBe2014 Kv j Sanchez-Bermudez, J., Alberdi, A., Schodel, R., Hummel, C.A., Arias, J.I., 2014A&A...572L...1S
SBe2014 Barba, R.H., Maiz Apellaniz, J., & Pott, J.-U.
SBe2014 A&A 572, L1, 2014
 
 
DISCOVERER
 
 
idgroup discov author
1 AEN Allen, D.A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18037-2423 SBE 1 Aa,Ab 2014 1 222 0.0 7.60 7.70 O7.5 B0 N 180340.33-242242.7

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WDS 18037-2423 SBE 1 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18037-2423 SBE 1 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 18037-2423 : VIRTUAL EYEPIECE
 
 

18037-2423 AEN   1A mag 10.3 Sp O7.5 18037-2423 SBE   1Ab mag 7.7 Sp B0 18037-2423 AEN   1B sep 3.5 P.A. 8.10 virtual eyepiece
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Radius:
Components only
 
 
WDS 18037-2423 : ALADIN DSS IMAGE @ 18h 03m 40.33s -24° 22' 42.7"
 
 
 
 
WDS 18037-2423 SBE 1 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18037-2423  SBE   1Aa,Ab distance=0' 18039-2422  SNA  78 distance=3' 18039-2419  SNA  79 distance=6' 18044-2421  TDT 662 distance=10' 18044-2423  RBR   8 distance=11' 18042-2415  BU 1126AB distance=12' 18042-2415  HJ 5009AB,C distance=12' 18042-2415  DAW 218AB,D distance=12' 18047-2421  HJ 5010 distance=15' 18026-2415  RST3149AB distance=16' 18026-2415  ARG  31AC distance=16' 18026-2415  BU 1462AD distance=16' 18023-2452  RST3148 distance=35' 18061-2412  B   376AB distance=35' 18061-2412  SNA  81Aa,Ab distance=35' 18061-2412  SNA  81AC distance=35' 18061-2412  SNA  81AD distance=35' 18056-2356  ARA2213 distance=39' 18009-2413  RST3147 distance=40' 18054-2343  TDT 672 distance=46' 18057-2514  OCC1041AB distance=59' 18057-2514  OCC1041AC distance=59' 18049-2326  ARA2210 distance=60' 18005-2341  SKF2528DE distance=60' 18005-2341  ALD 110AB distance=60' 18005-2341  SKF2528AC distance=60' 18005-2341  SKF2528AD distance=60' 18036-2523  OCC1035 distance=61' 18041-2523  OCC1036AB distance=61' 18041-2523  OCC1036AC distance=61' 18056-2328  ARA2212 distance=62' 17592-2426  RST3143 distance=62' 18055-2326  SKF2529AB distance=63' 18055-2326  SKF2529AC distance=63' 18055-2326  SKF2529BC distance=63' 17598-2349  GUL   1 distance=63' 18034-2526  OCC1034 distance=64' 18040-2529  HDO 148 distance=67' 18004-2333  RST3146 distance=67' 18022-2318  B  2851 distance=68' 18051-2317  B   375 distance=70' 17585-2425  B   366 distance=71' 18029-2533  OCC1033AB distance=71' 18029-2533  OCC1033AC distance=71' 17586-2441  DAM 687A,BC distance=71' 17586-2441  RST3139BC distance=71' 18031-2535  RCH   3 distance=73' 18064-2525  RCH   6 distance=74' 18055-2312  ARA2211 distance=76' 18041-2540  OCC1037 distance=78' 18027-2306  RST3151 distance=78' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show 18037-2423 AEN 1 AB 9 3.5
Show 18037-2423 SBE 1 Aa,Ab 222 0.0
Show 18039-2422 SNA 78 69 0.0 3
Show 18039-2419 SNA 79 81 0.1 6
Show 18044-2421 TDT 662 121 1.8 10
Show 18044-2423 RBR 8 318 3.1 11
Show 18042-2415 BU 1126 AB 55 0.6 12
Show 18042-2415 HJ 5009 AB,C 21 4.6 12
Show 18042-2415 DAW 218 AB,D 138 24.9 12
Show 18047-2421 HJ 5010 351 3.1 15
Show 18026-2415 RST3149 AB 62 1.7 16
Show 18026-2415 ARG 31 AC 26 35.6 16
Show 18026-2415 BU 1462 AD 196 27.3 16
Show 18023-2452 RST3148 135 0.5 35
Show 18061-2412 B 376 AB 97 1.9 35
Show 18061-2412 SNA 81 Aa,Ab 116 0.0 35
Show 18061-2412 SNA 81 AC 225 6.6 35
Show 18061-2412 SNA 81 AD 8 7.9 35
Show 18056-2356 ARA2213 235 14.5 39
Show 18009-2413 RST3147 205 0.2 40
Show 18054-2343 TDT 672 103 1.6 46
Show 18057-2514 OCC1041 AB -1 0.0 59
Show 18057-2514 OCC1041 AC -1 0.0 59
Show 18049-2326 ARA2210 145 8.7 60
Show 18005-2341 SKF2528 DE 223 3.0 60
Show 18005-2341 ALD 110 AB 73 3.9 60
Show 18005-2341 SKF2528 AC 19 1.7 60
Show 18005-2341 SKF2528 AD 203 6.5 60
Show 18036-2523 OCC1035 -1 0.0 61
Show 18041-2523 OCC1036 AB -1 0.0 61
Show 18041-2523 OCC1036 AC -1 0.0 61
Show 18056-2328 ARA2212 155 10.0 62
Show 17592-2426 RST3143 260 2.5 62
Show 18055-2326 SKF2529 AB 56 1.8 63
Show 18055-2326 SKF2529 AC 271 1.5 63
Show 18055-2326 SKF2529 BC 251 3.1 63
Show 17598-2349 GUL 1 243 3.7 63
Show 18034-2526 OCC1034 -1 0.0 64
Show 18040-2529 HDO 148 15 4.6 67
Show 18004-2333 RST3146 228 0.5 67
Show 18022-2318 B 2851 156 10.5 68
Show 18051-2317 B 375 168 0.9 70
Show 17585-2425 B 366 43 1.5 71
Show 18029-2533 OCC1033 AB -1 0.0 71
Show 18029-2533 OCC1033 AC -1 0.1 71
Show 17586-2441 DAM 687 A,BC 205 12.3 71
Show 17586-2441 RST3139 BC 145 1.2 71
Show 18031-2535 RCH 3 359 0.0 73
Show 18064-2525 RCH 6 208 2.3 74
Show 18055-2312 ARA2211 89 10.8 76
Show 18041-2540 OCC1037 -1 0.1 78

 
 
WDS 18037-2423 : COMPONENTS
 
 
  A Ab
Ab pa=219.4°
sep=0.00"
 
B pa=8.1°
sep=3.53"
pa=8.1°
sep=3.53"
 
 
18037-2423 A
 
 
Coord arcsec 2000 180340.33-242242.7 Mag 10.3 Spectral class O7.5 (blue) PmRA 2.00
PmDE -4.0
 
 
18037-2423 Ab
 
 
Coord arcsec 2000 180340.33-242242.7 Mag 7.7 Spectral class B0 (blue-white) PmRA -8.00
PmDE 6.0 Calc delta mag 0.1 Calc coord yes
 
 
18037-2423 B
 
 
Coord arcsec 2000 180340.37-242239.2 PmRA -8.00 PmDE 6.0 Calc delta mag 7.6
Calc coord yes