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Doubles in session


Current system
18153-1900
BU 284 AB
HD 167287


Nearby doubles
4' : 18150-1900
ARA 741

5' : 18150-1857
RST3167

9' : 18158-1855
OCC 566

14' : 18150-1912
LEO 15AB

15' : 18143-1902
ARA 740

15' : 18147-1847
TOB 272AB

15' : 18143-1904
B 2859AB

17' : 18164-1858
B 1885

18' : 18165-1856
ARA 466

20' : 18140-1904
ARA 736

20' : 18163-1913
B 2440

21' : 18141-1912
ARA 738AB

22' : 18168-1858
OCC9179

23' : 18138-1904
ARA 735

23' : 18137-1903
SKF 97

24' : 18147-1922
OCC 466

25' : 18138-1847
HJ 594AB

25' : 18170-1858
MZA 23AB

25' : 18152-1924
TSN 117

25' : 18155-1840
SEE 349

25' : 18162-1921
B 2439

25' : 18156-1835
ARA 465

26' : 18135-1903
ARA 734

26' : 18166-1842
ARA 468

28' : 18137-1845
FEN 28

29' : 18173-1851
ARA 470



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

18153-1900 BU 284 AB (HD 167287)

 
 
18h 15m 16.76s -18° 59' 33.9" P.A. 358.00 sep 18.1 mag 7.09,11.50 Sp B1Ib
 
 
Coord 2000 18153-1900 Discov num BU  284 Comp AB Coord arcsec 2000 18 15 16.76 -18 59 33.9
Date first 1890 Date last 2017 Obs 13
Pa first 358 Pa last 358.4 P.A. Now (θ) 358.4°
Sep first 19.2 Sep last 18.104 Sep. Now (ρ) 18.104"
Mag pri 7.09 Mag sec 11.50 delta mag (ΔM) 4.41 Spectral class B1Ib (blue-white)
Pri motion ra -001 Sec motion ra +002
Pri motion dec -002 Sec motion dec -022
Notes
rPM=0.915
This double is not physical.
 
 
18153-1900 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 167287 161217 18 15 17 -18 59 34 BU 284 AB 2017 13 358 18.1 7.09 11.50 4.41 <===
Show 161217 18 15 17 -18 59 34 BU 284 AC 2015 11 86 31.1 7.09 12.20 5.11
Show 161217 18 15 17 -18 59 34 BU 284 AD 2018 13 192 57.8 7.09 9.70 2.61
Show 161217 18 15 17 -18 59 34 BU 284 AE 2017 13 188 75.3 7.09 10.34 3.25
Show 161217 18 15 17 -18 59 34 BU 284 AF 2015 8 267 138.7 7.09 9.50 2.41
Show 161217 18 15 17 -18 59 34 BU 284 AG 2017 12 200 12.4 7.09 11.00 3.91
Show 161217 18 15 17 -18 59 34 BU 284 AH 2017 12 67 21.0 7.09 10.70 3.61
Show 161217 18 15 17 -18 59 34 BU 284 AS 2015 5 103 19.1 7.09 13.00 5.91
Show 18 15 17 -18 59 16 BU 284 BR 2015 8 326 5.2 11.50 12.00 0.50
Show 18 15 19 -18 59 32 ARA 743 CQ 2015 7 298 13.1 12.20 12.70 0.50
11-fold system
11 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 167287 Constellation Sagittarius SAO 161217 Tycho2 6272-00830-1
Gaia DR2 4094832952561701888 HD 167287