18170-1858 SNA 85 AC

 
 
18h 16m 58.56s -18° 58' 05.1" P.A. 88.00 sep 5.1 mag 6.67,12.57 Sp O7II-III
 
 
Coord 2000 18170-1858 Discov num SNA  85 Comp AC Coord arcsec 2000 18 16 58.56 -18 58 05.1
Date first 2012 Date last 2012 Obs 1
Pa first 88 Pa last 87.9 P.A. Now (θ) 87.9°
Sep first 5.1 Sep last 5.11 Sep. Now (ρ) 5.11"
Mag pri 6.67 Mag sec 12.57 delta mag (ΔM) 5.9 Spectral class O7II-III (blue)
Pri motion ra +000 Sec motion ra
Pri motion dec -002 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.
 
 
18170-1858 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 161255 18 16 59 -18 58 05 SNA 85 Aa,Ab 2012 2 265 0.0 6.80 9.30 2.50
Show 161255 18 16 59 -18 58 05 MZA 23 AB 2009 4 227 17.5 7.40 13.50 6.10
Show 161255 18 16 59 -18 58 05 SNA 85 AC 2012 1 88 5.1 6.67 12.57 5.90 <===
Show 161255 18 16 59 -18 58 05 SNA 85 AD 2012 1 247 5.8 6.67 13.63 6.96
Show 161255 18 16 59 -18 58 05 SNA 85 AE 2012 1 58 7.3 6.67 14.01 7.34
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 161255 Tycho2 6273-00422-1 Gaia DR2 4094790350826867584
HD 167659
 
 
WDS 18170-1858 SNA 85 AC : NOTES
 
 
discov_num notes refcode
SNA 85 Aa,Ab: Both NACO/SAM and PIONIER resolved the A componnet as a 50mas
pair, which probably corresponds to the 80mas pair detected through Rad1980
occultation (Radick & Lien 1980). The object may further be an SB1
(Gamen et al. 2008, RevMexAA 33, 54) Sna2014
HD 167659 Hilt 730. The 3 speckle observations all indicate a single star, so we
cannot confirm the existence of a companion found by lunar occultation Msn1998a
(Radick & Lien 1980). Rad1980
 
 
REFERENCES
 
 
refcode metd author reference
Msn1998a Sc j Mason, B.D., Gies, D.R., Hartkopf, W.I., Bagnuolo, Jr., W.G., 1998AJ....115..821M
Msn1998a ten Brummelaar, T.A., & McAlister, H.A.
Msn1998a AJ 115, 821, 1998
Rad1980 O j Radick, R.R. & Lien, D. 1980AJ.....85.1053R
Rad1980 AJ 85, 1053, 1980
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 MZA Maiz-Apellaniz, J., Walborn, N.R., Morrell, N.I., Niemela, V.S., & Nelan, E.P.
4 MZA Maiz-Apellaniz, J., Negueruela, I., Barba, R.H., Walborn, N.R., Pellerin, A.,
4 MZA Simon-Diaz, S., Sota, A., Marco, A., Alonso-Santiago, J., Sanchez-Bermudez, J.,
4 MZA Gamen, R.C., & Lorenzo, J.
5 MZA Maiz-Apellaniz, J., Sota, A., Arias, J.I., Barba, R.H., Walborn, N.R., Simon-Diaz,
5 MZA S., Negueruela, I., Marco, A., Leao, J.R., Herrero, A., Gamen, R.C. & Alfaro, E.J.
7 MZA Maiz-Apellaniz, J., Barba, R.H., Simon-Diaz, S., Sota, A., Trigueros Paez, E.,
7 MZA Caballero, J.A. & Alfaro, E.J.
9 MZA Maiz Apellaniz, J., Trigueros Paez, E., Negueruela, I., Barba, R.H., Simon-Diaz,
9 MZA S., Lorenzo, J., Sota, A., Gamen, R.C., Farina, C., Salas, J., Caballero, J.A.,
9 MZA Morrell, N.I., Pellerin, A., Alfaro, E.J., Herrero, A., Arias, J.I. & Marco, A.
13 MZA Maiz Apellaniz, J., Trigueros Paez, E., Negueruela, I., Barba, R.H., Simon-Diaz,
13 MZA S., Lorenzo, J., Sota, A., Gamen, R.C., Farina, C., Salas, J., Caballero, J.A.,
13 MZA Morrell, N.I., Pellerin, A., Alfaro, E.J., Herrero, A., Arias, J.I. & Marco, A.
14 MZA Maiz Apellaniz, J., Barba, R.H., Farina, C., Sota, A., Pantaleoni Gonzalez, M.,
14 MZA Holgado, G., Negueruela, I. & Simon-Diaz, S.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18170-1858 SNA 85 AC 2012 1 88 5.1 6.67 12.57 O7II-III N K 181658.56-185805.1

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

 
 
WDS 18170-1858 SNA 85 AC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18170-1858 SNA 85 AC : MEASURES
 
 
No records found.

 
 
WDS 18170-1858 : VIRTUAL EYEPIECE
 
 

18170-1858 MZA  23A mag 7.4 Sp B8Ib 18170-1858 SNA  85Ab mag 9.3 Sp III 18170-1858 MZA  23B sep 17.0 P.A. 225.10 mag 13.5 18170-1858 SNA  85C sep 4.8 P.A. 87.80 mag 12.57 Sp III 18170-1858 SNA  85D sep 5.5 P.A. 245.90 mag 13.63 Sp III 18170-1858 SNA  85E sep 7.0 P.A. 56.10 mag 14.01 Sp III 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 18170-1858 : ALADIN DSS IMAGE @ 18h 16m 58.56s -18° 58' 05.1"
 
 
 
 
WDS 18170-1858 SNA 85 AC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18170-1858  SNA  85AC distance=0' 18168-1858  OCC9179 distance=3' 18165-1856  ARA 466 distance=8' 18164-1858  B  1885 distance=8' 18173-1851  ARA 470 distance=8' 18179-1848  SHJ 263AB distance=17' 18179-1848  BU  299AT distance=17' 18179-1848  BU  299AU distance=17' 18179-1848  BU  299AV distance=17' 18179-1848  BU  299AW distance=17' 18179-1848  BU  299VW distance=17' 18179-1848  BU  299TS distance=17' 18179-1848  BU  299BR distance=17' 18166-1842  ARA 468 distance=18' 18158-1855  OCC 566 distance=18' 18163-1913  B  2440 distance=18' 18184-1859  OCC9180 distance=20' 18180-1842  HWE  42 distance=20' 18174-1920  B  2863 distance=23' 18153-1900  ARA 743CQ distance=24' 18166-1835  DBR 312 distance=24' 18153-1900  BU  284BR distance=25' 18153-1900  BU  284AB distance=25' 18153-1900  BU  284AC distance=25' 18153-1900  BU  284AD distance=25' 18153-1900  BU  284AE distance=25' 18153-1900  BU  284AF distance=25' 18153-1900  BU  284AG distance=25' 18153-1900  BU  284AH distance=25' 18153-1900  BU  284AS distance=25' 18186-1906  OCC9181 distance=25' 18162-1921  B  2439 distance=26' 18150-1857  RST3167 distance=29' 18150-1900  ARA 741 distance=29' 18180-1834  ARA 473 distance=29' 18166-1830  DBR 311 distance=29' 18165-1830  DBR 310 distance=30' 18156-1835  ARA 465 distance=31' 18175-1828  OCC  12Aa,Ab distance=32' 18175-1828  RST3170AB distance=32' 18150-1912  LEO  15AB distance=32' 18150-1912  LEO  15AC distance=32' 18150-1912  OCC9178Aa,Ab distance=32' 18187-1837  BU  639AB distance=33' 18187-1837  SHJ 264AB,C distance=33' 18187-1837  FOX 225AB,E distance=33' 18171-1826  ARA 469 distance=33' 18187-1837  BU  300CD distance=33' 18147-1847  TOB 272AB distance=34' 18147-1847  TOB 272BC distance=34' 18155-1840  SEE 349 distance=35' 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 18170-1858 MZA 23 AB 227 17.5
Show 18170-1858 SNA 85 Aa,Ab 265 0.0
Show 18170-1858 SNA 85 AC 88 5.1
Show 18170-1858 SNA 85 AD 247 5.8
Show 18170-1858 SNA 85 AE 58 7.3
Show 18168-1858 OCC9179 -1 0.1 3
Show 18165-1856 ARA 466 140 7.3 8
Show 18164-1858 B 1885 257 2.5 8
Show 18173-1851 ARA 470 166 13.8 8
Show 18179-1848 SHJ 263 AB 10 53.7 17
Show 18179-1848 BU 299 AT 21 21.5 17
Show 18179-1848 BU 299 AU 66 28.5 17
Show 18179-1848 BU 299 AV 324 22.9 17
Show 18179-1848 BU 299 AW 325 23.4 17
Show 18179-1848 BU 299 VW 317 6.8 17
Show 18179-1848 BU 299 TS 304 7.5 17
Show 18179-1848 BU 299 BR 133 10.2 17
Show 18166-1842 ARA 468 131 5.9 18
Show 18158-1855 OCC 566 -1 0.1 18
Show 18163-1913 B 2440 291 0.5 18
Show 18184-1859 OCC9180 -1 0.1 20
Show 18180-1842 HWE 42 189 21.5 20
Show 18174-1920 B 2863 310 5.7 23
Show 18153-1900 ARA 743 CQ 298 13.1 24
Show 18166-1835 DBR 312 37 4.4 24
Show 18153-1900 BU 284 BR 326 5.2 25
Show 18153-1900 BU 284 AB 358 18.1 25
Show 18153-1900 BU 284 AC 86 31.1 25
Show 18153-1900 BU 284 AD 192 57.8 25
Show 18153-1900 BU 284 AE 188 75.3 25
Show 18153-1900 BU 284 AF 267 138.7 25
Show 18153-1900 BU 284 AG 200 12.4 25
Show 18153-1900 BU 284 AH 67 21.0 25
Show 18153-1900 BU 284 AS 103 19.1 25
Show 18186-1906 OCC9181 -1 0.2 25
Show 18162-1921 B 2439 113 2.5 26
Show 18150-1857 RST3167 153 4.5 29
Show 18150-1900 ARA 741 355 14.7 29
Show 18180-1834 ARA 473 334 14.2 29
Show 18166-1830 DBR 311 101 3.1 29
Show 18165-1830 DBR 310 63 2.1 30
Show 18156-1835 ARA 465 258 15.2 31
Show 18175-1828 OCC 12 Aa,Ab -1 0.1 32
Show 18175-1828 RST3170 AB 169 8.6 32
Show 18150-1912 LEO 15 AB 112 4.0 32
Show 18150-1912 LEO 15 AC 300 8.1 32
Show 18150-1912 OCC9178 Aa,Ab -1 0.1 32
Show 18187-1837 BU 639 AB 136 0.5 33
Show 18187-1837 SHJ 264 AB,C 50 17.2 33
Show 18187-1837 FOX 225 AB,E 328 145.6 33
Show 18171-1826 ARA 469 355 6.5 33

 
 
WDS 18170-1858 : COMPONENTS
 
 
  A Ab B C D
Ab pa=264.9°
sep=0.04"
 
B pa=225.1°
sep=17.03"
pa=225.0°
sep=17.00"
 
C pa=87.8°
sep=4.83"
pa=87.8°
sep=4.88"
pa=54.1°
sep=20.85"
 
D pa=245.9°
sep=5.51"
pa=245.8°
sep=5.47"
pa=35.7°
sep=12.04"
pa=256.1°
sep=10.16"
 
E pa=56.1°
sep=7.02"
pa=56.3°
sep=7.06"
pa=48.3°
sep=23.96"
pa=15.0°
sep=3.86"
pa=60.4°
sep=12.49"
 
 
18170-1858 A
 
 
Coord arcsec 2000 181658.56-185805.1 Mag 7.4 Spectral class B8Ib (blue-white) PmRA 0.00
PmDE -2.0 SAO 161255 Tycho2 6273-00422-1 HD 167659
DM BD-19 4944
Tycho2
Tycho2 6273-00422-1 Pflag RAmdeg 274.24400850 DEmdeg -18.96811041
PmRA -0.4 PmDE -1.6 E RAmdeg 5 E DEmdeg 6
E pmRA 1.3 E pmDE 1.4 EpRAm 1991.31 EpDEm 1991.18
Num 12 Q RAmdeg 1.0 Q DEmdeg 1.3 Q pmRA 1.1
Q pmDE 1.4 BTmag 7.539 E BTmag 0.016 VTmag 7.400
E VTmag 0.011 Prox 999 TYC T HIP
CCDM RAdeg 274.24400972 DEdeg -18.96810667 EpRA 1990 1.77
EpDE 1990 1.77 E RAdeg 4.6 E DEdeg 5.6 Posflg
Corr 0.0
SAO
SAO 161255 DelFlag RA1950 PmRA1950 0
DE1950 PmDE1950 0.003 Vmag 7.5 SpType B2
Double code Source 22 CatNum 7593 DM BD-19 4944
DMcomp BDsup HD 167659 M HD 0
GC RA1950rad 4.77361122 DE1950rad -0.33138348 PmRA2000 0.0001
PmDE2000 0.004
 
 
18170-1858 Ab
 
 
Coord arcsec 2000 181658.56-185805.1 Mag 9.3 Spectral class III Calc delta mag 2.5
Calc coord yes
 
 
18170-1858 B
 
 
Coord arcsec 2000 181657.71-185817.1 Mag 13.5 Calc delta mag 6.7 Calc coord yes
 
 
18170-1858 C
 
 
Coord arcsec 2000 181658.90-185804.9 Mag 12.57 Spectral class III Calc delta mag 5.77
Calc coord yes
 
 
18170-1858 D
 
 
Coord arcsec 2000 181658.21-185807.3 Mag 13.63 Spectral class III Calc delta mag 6.83
Calc coord yes
 
 
18170-1858 E
 
 
Coord arcsec 2000 181658.97-185801.2 Mag 14.01 Spectral class III Calc delta mag 7.21
Calc coord yes