18189-1348 SNA 91 Aa,Ab (HD 168137)

 
 
18h 18m 56.19s -13° 48' 31.1" P.A. 212.00 sep 0.0 mag 8.30,8.60 Sp O8V dist. 427.35 pc (1394.02 l.y.)
 
 
Coord 2000 18189-1348 Discov num SNA  91 Comp Aa,Ab Coord arcsec 2000 18 18 56.19 -13 48 31.1
Date first 2009 Date last 2016 Obs 12
Pa first 168 Pa last 212.3 P.A. Now (θ) 212.3°
Sep first 0.0 Sep last 0.007 Sep. Now (ρ) 0.007"
Mag pri 8.30 Mag sec 8.60 delta mag (ΔM) 0.3 Spectral class O8V (blue)
Pri motion ra +003 Sec motion ra
Pri motion dec +000 Sec motion dec
Notes N V K (See Notes, Proper motion indicates physical, 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
This double is physical.
 
 
18189-1348 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 168137 161316 18 18 56 -13 48 31 SNA 91 Aa,Ab 2016 12 212 0.0 8.30 8.60 0.30 Y <===
Show 161316 18 18 56 -13 48 31 HDS 2590 AB 2016 3 353 2.1 9.05 12.90 3.85
Triple system
2 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 168137 Constellation Serpens SAO 161316 HIP 89750
Tycho2 5689-01097-1 Gaia DR2 4146599682284818176 HD 168137 BD BD-13 4932
Distance 427.35 Distance ly 1394.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)1836d (5.03y)± 20 Periastron (T)53525d (2005.422y)± 14 Semi-major axis (a)7m± 3.9
Eccentricity (e)0.902± 0.058 Inclination (i)105.2°± 4 Longitude of periastron (ω)246.7°± 9
Node (Ω)231.2°± 5 Notes ReferenceLeB2017
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 114.6 0.002
2001-01-01 217.4 0.006
2002-01-01 208.1 0.007
2003-01-01 198.9 0.006
2004-01-01 182.8 0.004
2005-01-01 118.3 0.002
2006-01-01 217.7 0.006
2007-01-01 208.3 0.007
2008-01-01 199.2 0.006
2009-01-01 183.4 0.004
2010-01-01 121.9 0.002
2011-01-01 218.1 0.005
2012-01-01 208.5 0.007
2013-01-01 199.5 0.006
2014-01-01 184.1 0.004
2015-01-01 125.4 0.002
2016-01-01 218.5 0.005
2017-01-01 208.7 0.007
2018-01-01 199.8 0.006
2019-01-01 184.7 0.004
2020-01-01 128.7 0.002
2021-01-01 218.8 0.005
2022-01-01 209.0 0.007
2023-01-01 200.0 0.006
2024-01-01 185.3 0.004
2025-01-01 131.9 0.002
2026-01-01 219.2 0.005
2027-01-01 209.2 0.007
2028-01-01 200.3 0.006
2029-01-01 185.9 0.004
2030-01-01 134.9 0.002


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds18189-1348a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 18189-1348 SNA 91 Aa,Ab (HD 168137) : NOTES
 
 
discov_num notes refcode
SNA 91 Aa,Ab: The A component is an O7V+O8V 912d SB (Sana et al. 2012) that Sna2012
we marginally resove with PIONIER at 6mas separation. Sna2014
 
 
REFERENCES
 
 
refcode metd author reference
LeB2017 orb j Le Bouquin, J.-B., Sana, H., Gosset, E., De Becker, M., Duvert, G., Absil, O., 2017A&A...601A...34
LeB2017 +Kv Anthonioz, F., Berger, J.-P., Ertel, S., Grellmann, R., Guieu, S., Kervella, P.,
LeB2017 Rabus, M., & Willson, M.
LeB2017 A&A 601, A34, 2017
Sna2012 not - Sana, H., de Mink, S.E., de Koter, A., et al. 2012Sci...337..444S
Sna2012 Science 337, 444, 2012
Sna2014 Kv j Sana, H., LeBouquin, J.-B., Lacour, S., Berger, J.-P., Duvert, G., Gauchet, L., 2014ApJS..215...15S
Sna2014 +A Norris, B., Olofsson, J., Pickel, D., Zins, G., Absil, O., de Koter, A.,
Sna2014 Kratter, K., Schnurr, O., & Zinnecker, H.
Sna2014 ApJS 215, 15, 2014
Sna2014 (NACO companions in Table 6 assumed physical if quoted probability of spurious
Sna2014 detection <10%, optical if >90%, otherwise indeterminate)
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18189-1348 SNA 91 Aa,Ab 2013 1 156 0.0 8.30 8.60 O8V V K 181856.19-134831.1
18189-1348 SNA 91 Aa,Ab 2016 12 212 0.0 8.30 8.60 O8V NV K 181856.19-134831.1

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

 
 
WDS 18189-1348 SNA 91 Aa,Ab (HD 168137) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18189-1348 SNA 91 Aa,Ab (HD 168137) : MEASURES
 
 
No records found.

 
 
WDS 18189-1348 (HD 168137) : VIRTUAL EYEPIECE
 
 

18189-1348 HDS2590A mag 9.05 Sp O8V 18189-1348 SNA  91Ab mag 8.6 18189-1348 HDS2590B sep 2.1 P.A. 352.90 mag 12.9 virtual eyepiece
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Radius:
Components only
 
 
WDS 18189-1348 (HD 168137) : ALADIN DSS IMAGE @ 18h 18m 56.19s -13° 48' 31.1"
 
 
 
 
WDS 18189-1348 SNA 91 Aa,Ab (HD 168137) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18189-1348  SNA  91Aa,Ab distance=0' 18190-1349  DBR 292 distance=1' 18189-1349  DCH  43 distance=2' 18189-1347  DCH  42CD distance=2' 18189-1347  DCH  41AB distance=2' 18188-1347  DCH  37AB distance=3' 18188-1347  DCH  38CD distance=3' 18188-1349  DCH  40 distance=3' 18188-1348  DCH  39 distance=3' 18187-1349  DCH  33AB distance=3' 18187-1349  DCH  35EF distance=4' 18187-1347  DCH  32IJ distance=4' 18187-1347  DCH  31GH distance=4' 18187-1346  DCH  27 distance=4' 18187-1347  DCH  30EF distance=4' 18187-1347  DCH  29CD distance=5' 18187-1349  DCH  34CD distance=5' 18187-1347  DCH  28AB distance=5' 18186-1347  DCH  24AB distance=5' 18186-1348  DCH  26AB distance=5' 18186-1348  SNA  88AC distance=5' 18186-1348  SNA  88AD distance=5' 18186-1348  SNA  88AE distance=5' 18186-1348  SNA  88AF distance=5' 18186-1348  SNA  88AG distance=5' 18186-1346  DCH  25EF distance=5' 18186-1346  DCH  23CD distance=5' 18186-1347  DBR 291CD distance=5' 18186-1348  SNA  87Ha,Hb distance=5' 18186-1348  SNA  87HI distance=5' 18186-1348  SNA  87HJ distance=5' 18186-1348  SNA  87HK distance=5' 18187-1345  SNA  89AB distance=6' 18187-1345  SNA  89AC distance=6' 18187-1345  SNA  89AD distance=6' 18187-1345  SNA  89AE distance=6' 18186-1346  DCH  22AB distance=6' 18191-1344  DCH  44 distance=6' 18186-1345  DCH  21 distance=6' 18185-1345  DCH  19 distance=7' 18184-1344  DBR 290 distance=8' 18185-1344  SHN 229 distance=9' 18187-1356  DCH  36 distance=9' 18186-1341  DCH  20 distance=10' 18182-1347  DCH  18 distance=12' 18211-1339  RST9006 distance=30' 18179-1415  BRT2748 distance=31' 18168-1414  J  2204AB distance=40' 18168-1414  J  2204AC distance=40' 18168-1414  J  2204BC distance=40' 18181-1310  HU   59 distance=41' grafico limitrofi
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Show name coord_2000 discov# comp pa sep dist(')
Show 18189-1348 HDS2590 AB 353 2.1
Show 18189-1348 SNA 91 Aa,Ab 212 0.0
Show 18190-1349 DBR 292 61 2.0 1
Show 18189-1349 DCH 43 268 1.5 2
Show 18189-1347 DCH 42 CD 320 1.3 2
Show 18189-1347 DCH 41 AB 261 1.0 2
Show 18188-1347 DCH 37 AB 307 0.7 3
Show 18188-1347 DCH 38 CD 90 1.4 3
Show 18188-1349 DCH 40 297 1.4 3
Show 18188-1348 DCH 39 254 0.5 3
Show 18187-1349 DCH 33 AB 95 0.4 3
Show 18187-1349 DCH 35 EF 153 0.7 4
Show 18187-1347 DCH 32 IJ 7 0.9 4
Show 18187-1347 DCH 31 GH 253 1.2 4
Show 18187-1346 DCH 27 120 0.8 4
Show 18187-1347 DCH 30 EF 136 0.7 4
Show 18187-1347 DCH 29 CD 185 1.1 5
Show 18187-1349 DCH 34 CD 273 1.2 5
Show 18187-1347 DCH 28 AB 225 0.8 5
Show 18186-1347 DCH 24 AB 30 0.5 5
Show 18186-1348 DCH 26 AB 306 0.2 5
Show 18186-1348 SNA 88 AC 5 3.7 5
Show 18186-1348 SNA 88 AD 246 3.5 5
Show 18186-1348 SNA 88 AE 177 3.8 5
Show 18186-1348 SNA 88 AF 126 5.9 5
Show 18186-1348 SNA 88 AG 305 6.4 5
Show 18186-1346 DCH 25 EF 295 1.1 5
Show 18186-1346 DCH 23 CD 322 0.8 5
Show 18186-1347 DBR 291 CD 99 3.1 5
Show 18186-1348 SNA 87 Ha,Hb 49 0.0 5
Show 18186-1348 SNA 87 HI 297 2.7 5
Show 18186-1348 SNA 87 HJ 139 3.4 5
Show 18186-1348 SNA 87 HK 68 5.8 5
Show 18187-1345 SNA 89 AB 344 5.1 6
Show 18187-1345 SNA 89 AC 249 5.1 6
Show 18187-1345 SNA 89 AD 206 5.5 6
Show 18187-1345 SNA 89 AE 241 6.2 6
Show 18186-1346 DCH 22 AB 346 0.6 6
Show 18191-1344 DCH 44 324 0.6 6
Show 18186-1345 DCH 21 299 0.1 6
Show 18185-1345 DCH 19 231 0.7 7
Show 18184-1344 DBR 290 84 2.6 8
Show 18185-1344 SHN 229 -1 0.1 9
Show 18187-1356 DCH 36 235 1.4 9
Show 18186-1341 DCH 20 228 0.5 10
Show 18182-1347 DCH 18 288 1.4 12
Show 18211-1339 RST9006 246 1.4 30
Show 18179-1415 BRT2748 82 2.8 31
Show 18168-1414 J 2204 AB 190 5.9 40
Show 18168-1414 J 2204 AC 351 14.8 40
Show 18168-1414 J 2204 BC 356 20.4 40

 
 
WDS 18189-1348 : COMPONENTS
 
 
  A Ab
Ab pa=211.5°
sep=0.01"
 
B pa=352.9°
sep=2.10"
pa=353.0°
sep=2.10"
 
 
18189-1348 A
 
 
Coord arcsec 2000 181856.19-134831.1 Mag 9.05 Spectral class O8V (blue) PmRA 3.00
PmDE 0.0 SAO 161316 Tycho2 5689-01097-1 HD 168137
BD BD-13 4932
Tycho2
Tycho2 5689-01097-1 Pflag RAmdeg 274.73412179 DEmdeg -13.80863404
PmRA 2.8 PmDE -0.1 E RAmdeg 11 E DEmdeg 15
E pmRA 1.8 E pmDE 1.7 EpRAm 1991.42 EpDEm 1990.87
Num 3 Q RAmdeg 0.6 Q DEmdeg 0.9 Q pmRA 0.7
Q pmDE 0.9 BTmag 9.394 E BTmag 0.023 VTmag 9.053
E VTmag 0.021 Prox 20 TYC T HIP 89750
CCDM A RAdeg 274.73411556 DEdeg -13.80863389 EpRA 1990 1.85
EpDE 1990 1.74 E RAdeg 10.9 E DEdeg 14.5 Posflg
Corr -0.1
SAO
SAO 161316 DelFlag RA1950 PmRA1950 0.0003
DE1950 PmDE1950 -0.003 Vmag 9.1 SpType B
Double code Source 21 CatNum 6666 DM BD-13 4932
DMcomp BDsup HD 168137 M HD 0
GC RA1950rad 4.78263831 DE1950rad -0.24137712 PmRA2000 0.0005
PmDE2000 -0.001
 
 
18189-1348 Ab
 
 
Coord arcsec 2000 181856.19-134831.1 Mag 8.6 Calc delta mag 0.3 Calc coord yes
 
 
18189-1348 B
 
 
Coord arcsec 2000 181856.17-134829.0 Mag 12.9 PmRA -3.00 PmDE 1.0
Calc delta mag 4.6 Calc coord yes