16019-2159 LAF 92 AC

 
 
16h 01m 55.45s -21° 58' 49.4" P.A. 43.00 sep 9.5 mag 6.90,17.01 Sp B9V dist. 156.74 pc (511.29 l.y.)
 
 
Coord 2000 16019-2159 Discov num LAF  92 Comp AC Coord arcsec 2000 16 01 55.45 -21 58 49.4
Date first 2008 Date last 2008 Obs 1
Pa first 43 Pa last 43.4 P.A. Now (θ) 43.4°
Sep first 9.5 Sep last 9.451 Sep. Now (ρ) 9.451"
Mag pri 6.90 Mag sec 17.01 delta mag (ΔM) 10.11 Spectral class B9V (blue-white)
Pri motion ra -012 Sec motion ra
Pri motion dec -024 Sec motion dec
Notes N U K (See Notes, Proper motion indicates non-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 not physical.
 
 
16019-2159 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 184043 16 01 55 -21 58 49 KOU 44 AB 2011 6 140 4.5 6.87 14.22 7.35
Show 184043 16 01 55 -21 58 49 LAF 92 AC 2008 1 43 9.5 6.90 17.01 10.11 <===
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Scorpius SAO 184043 HIP 78530 Tycho2 6212-01713-1
Gaia DR2 6243537406369453824 HD 143567 BD BD-21 4255 Distance 156.74
Distance ly 511.29
 
 
WDS 16019-2159 LAF 92 AC : NOTES
 
 
discov_num notes refcode
KOU 44 Followup imaging by Lafreniere et al. (2011) indicates that components
share common proper motion. Spectral types are B9V and M8 +/- 1; mass
of the secondary is estimated from models at 0.022 +/- 0.004 Msun. Laf2011
Lachapelle et al. (2015) derive the following properties:
spectral types | B9V | M7 +/- 0.5
Teff(K) | ~10,500 | 2700 +/- 100
log(L/Lsun) | | -2.53 +/- 0.09
Mass (Msun) (5 Myr) | ~2.5 | 0.022 +/- 0.001
Mass (Msun) (10 Myr) | ~2.5 | 0.023 +/- 0.002
Distance (pc) | 156.7 +/- 13.0 |
Projected separation (AU) | 740 +/- 60 | Lch2015
 
 
REFERENCES
 
 
refcode metd author reference
Laf2011 A u Lafreniere, D., Jayawardhana, R., Janson, M., Helling, C., Witte, S., & 2011ApJ...730...42L
Laf2011 Hauschildt, P.
Laf2011 ApJ 730, 42, 2011
Laf2011 (photometry of both components based on 2MASS PSC plus their contrast measures)
Lch2015 A j Lachapelle, F.-R., Lafreniere, D., Gagne, J., Jayawardhana, R., Janson, M., 2015ApJ...802...61L
Lch2015 Helling, C., & Witte, S.
Lch2015 ApJ 802, 61, 2015
 
 
DISCOVERER
 
 
idgroup discov author
1 KOU Kouwenhoven, M.B.N., Brown, A.G., Zinnecker, H., Kaper, L., & Portegies Zwart, S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
16019-2159 LAF 92 AC 2008 1 43 9.5 6.90 17.01 B9V NU K 160155.45-215849.4

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WDS 16019-2159 LAF 92 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 16019-2159 LAF 92 AC : MEASURES
 
 
No records found.

 
 
WDS 16019-2159 : VIRTUAL EYEPIECE
 
 

16019-2159 KOU  44A mag 6.87 Sp B9V 16019-2159 KOU  44B sep 4.4 P.A. 142.40 mag 14.22 16019-2159 LAF  92C sep 9.1 P.A. 41.20 mag 17.01 virtual eyepiece
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Radius:
Components only
 
 
WDS 16019-2159 : ALADIN DSS IMAGE @ 16h 01m 55.45s -21° 58' 49.4"
 
 
 
 
WDS 16019-2159 LAF 92 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


16019-2159  LAF  92AC distance=0' 16005-2209  BOY  16 distance=23' 16035-2213  HU  914 distance=26' 16040-2156  LDS 548 distance=30' 16011-2228  KOH  65 distance=31' 16000-2221  USD 264AB distance=35' 16000-2221  KSA 122BC distance=35' 16020-2236  BOY  19AB distance=38' 16020-2236  BOY  19AC distance=38' 15593-2211  TOK 739 distance=39' 16014-2237  BOY  17AB distance=40' 16014-2237  BOY  17AC distance=40' 16046-2139  TOK 743AB distance=43' 16046-2139  TOK 743AB,C distance=43' 16014-2241  MET  67AB distance=43' 16014-2241  MET  67AC distance=43' 16014-2241  MET  67AD distance=43' 16014-2241  MSR   6AE distance=43' 16014-2241  MSR   6AF distance=43' 16014-2241  MSR   6AG distance=43' 16014-2241  MSR   6AH distance=43' 16022-2241  KOU  46AB distance=43' 16022-2241  LAF  94AC distance=43' 16022-2241  LAF  94AD distance=43' 16022-2241  BNV  10Aa,Ab distance=43' 16022-2240  GHE  18AB distance=43' 16022-2240  LAF  93AC distance=43' 16043-2131  KOH  71 distance=44' 16044-2130  LAF 102 distance=45' 16003-2237  LAB   3 (Dschubba) distance=45' 16007-2241  TOK 740 distance=46' 16036-2246  IRE   2 distance=53' 16038-2245  USD 407 distance=54' 16057-2150  KOU  49AB distance=54' 16057-2150  LAF 104AC distance=54' 16057-2150  LAF 104AD distance=54' 16057-2150  LAF 104AE distance=54' 16057-2150  LAF 104AF distance=54' 15587-2125  DON 770 distance=58' 15585-2124  JKS   8AB distance=60' 15585-2124  HNK   5Aa,Ab distance=60' 16017-2258  BOY  18 distance=60' 16030-2257  KSA  81 distance=60' 16060-2227  USD 514 distance=64' 15598-2058  RST2990 distance=68' 16069-2152  B  1800AB distance=69' 16018-2050  KOH  67 distance=70' 15586-2257  MET  65AB distance=75' 15586-2257  MET  65AC distance=75' 15586-2257  MET  65AD distance=75' 15586-2257  MET  65AE distance=75' 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 16019-2159 KOU 44 AB 140 4.5
Show 16019-2159 LAF 92 AC 43 9.5
Show 16005-2209 BOY 16 41 0.9 23
Show 16035-2213 HU 914 338 3.1 26
Show 16040-2156 LDS 548 154 10.2 30
Show 16011-2228 KOH 65 340 0.3 31
Show 16000-2221 USD 264 AB 343 0.3 35
Show 16000-2221 KSA 122 BC 108 0.1 35
Show 16020-2236 BOY 19 AB 6 0.2 38
Show 16020-2236 BOY 19 AC 93 2.5 38
Show 15593-2211 TOK 739 84 0.1 39
Show 16014-2237 BOY 17 AB 344 0.1 40
Show 16014-2237 BOY 17 AC 1 1.1 40
Show 16046-2139 TOK 743 AB 133 0.1 43
Show 16046-2139 TOK 743 AB,C 94 5.5 43
Show 16014-2241 MET 67 AB 37 6.5 43
Show 16014-2241 MET 67 AC 311 9.5 43
Show 16014-2241 MET 67 AD 73 10.1 43
Show 16014-2241 MSR 6 AE 283 14.3 43
Show 16014-2241 MSR 6 AF 289 15.8 43
Show 16014-2241 MSR 6 AG 299 16.7 43
Show 16014-2241 MSR 6 AH 170 17.0 43
Show 16022-2241 KOU 46 AB 48 12.0 43
Show 16022-2241 LAF 94 AC 309 0.2 43
Show 16022-2241 LAF 94 AD 91 6.2 43
Show 16022-2241 BNV 10 Aa,Ab 183 0.3 43
Show 16022-2240 GHE 18 AB 306 0.2 43
Show 16022-2240 LAF 93 AC 131 7.7 43
Show 16043-2131 KOH 71 152 0.1 44
Show 16044-2130 LAF 102 93 9.3 45
Show Dschubba 16003-2237 LAB 3 16 0.1 45
Show 16007-2241 TOK 740 61 0.1 46
Show 16036-2246 IRE 2 206 10.8 53
Show 16038-2245 USD 407 39 0.1 54
Show 16057-2150 KOU 49 AB 164 9.0 54
Show 16057-2150 LAF 104 AC 329 0.1 54
Show 16057-2150 LAF 104 AD 106 3.9 54
Show 16057-2150 LAF 104 AE 224 10.8 54
Show 16057-2150 LAF 104 AF 224 10.8 54
Show 15587-2125 DON 770 198 2.0 58
Show 15585-2124 JKS 8 AB 338 19.1 60
Show 15585-2124 HNK 5 Aa,Ab 20 0.1 60
Show 16017-2258 BOY 18 356 0.7 60
Show 16030-2257 KSA 81 59 1.2 60
Show 16060-2227 USD 514 149 0.2 64
Show 15598-2058 RST2990 177 0.2 68
Show 16069-2152 B 1800 AB 234 2.4 69
Show 16018-2050 KOH 67 351 0.1 70
Show 15586-2257 MET 65 AB 6.6 75
Show 15586-2257 MET 65 AC 358 7.7 75
Show 15586-2257 MET 65 AD 129 8.4 75

 
 
WDS 16019-2159 : COMPONENTS
 
 
  A B
B pa=142.4°
sep=4.40"
 
C pa=41.2°
sep=9.13"
pa=17.9°
sep=10.88"
 
 
16019-2159 A
 
 
Coord arcsec 2000 160155.45-215849.4 Mag 6.87 Spectral class B9V (blue-white) PmRA -12.00
PmDE -24.0 SAO 184043 HIP 78530 Tycho2 6212-01713-1
HD 143567 BD BD-21 4255
Tycho2
Tycho2 6212-01713-1 Pflag RAmdeg 240.48106286 DEmdeg -21.98038747
PmRA -11.4 PmDE -23.6 E RAmdeg 4 E DEmdeg 5
E pmRA 1.4 E pmDE 1.4 EpRAm 1991.45 EpDEm 1991.03
Num 11 Q RAmdeg 1.0 Q DEmdeg 0.8 Q pmRA 0.9
Q pmDE 0.8 BTmag 7.296 E BTmag 0.015 VTmag 7.203
E VTmag 0.011 Prox 999 TYC T HIP 78530
CCDM RAdeg 240.48109111 DEdeg -21.98033139 EpRA 1990 1.71
EpDE 1990 1.42 E RAdeg 4.2 E DEdeg 5.4 Posflg
Corr -0.1
SAO
SAO 184043 DelFlag RA1950 PmRA1950 -0.001
DE1950 PmDE1950 -0.012 Vmag 7.3 SpType B9
Double code Source 23 CatNum 6614 DM BD-21 4255
DMcomp BDsup HD 143567 M HD 0
GC RA1950rad 4.18431112 DE1950rad -0.38120303 PmRA2000 -0.001
PmDE2000 -0.009
Hipparcos
Catalog H HIP 78530 Proxy RAhms 16 01 55.46
DEdms -21 58 49.2 Vmag 7.19 VarFlag R Vmag H
RAdeg 240.481 DEdeg -21.9803 AstroRef Plx 7.58
CCDM N CCDM Nsys Ncomp 1
MultFlag Source Qual M HIP
Theta Rho HD 143567 BD BD-21 4255
CD CP Dm number -21 4255 VIred 0.08
SpType B9V R SpType Coord arcsec 2000 160155.46-215849.2
Hipparcos 2
HIP 78530 Sn 5 So 0 Nc 1
RArad 4.1971868612 DErad -0.383629123 Plx 6.38 PmRA -11.38
PmDE -24.66 E RArad 0.47 E DErad 0.29 E Plx 0.53
E pmRA 0.59 E pmDE 0.37 Hpmag 7.2224 E Hpmag 0.0008
SHp 0.006 VA 0 BV 0.089 E BV 0.01
VI 0.1
 
 
16019-2159 B
 
 
Coord arcsec 2000 160155.64-215852.9 Mag 14.22 Calc delta mag 7.35 Calc coord yes
 
 
16019-2159 C
 
 
Coord arcsec 2000 160155.88-215842.5 Mag 17.01 Calc delta mag 10.14 Calc coord yes