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Doubles in session


Current system
18317-1658
HU 243
HD 170741


Nearby doubles
13' : 18326-1657
ARA 283AB

15' : 18328-1656
ARA 106

19' : 18320-1641
ARA 105

21' : 18318-1718
KPP4112

25' : 18307-1639
ARA 104

32' : 18338-1710
J 2216

35' : 18311-1730
J 1744

39' : 18344-1707
J 2217

44' : 18332-1620
ARA 107

49' : 18284-1702
ARA 282

49' : 18351-1659
MCA 52

50' : 18347-1632
ARA 108

57' : 18342-1741
ARA 284

61' : 18307-1559
ARA 103

61' : 18295-1606
TDT 909

63' : 18275-1711
RST3181

67' : 18363-1649
ARA 109

70' : 18360-1625
TDT 954

71' : 18271-1719
HDS2609

71' : 18269-1712
BU 965

73' : 18280-1747
RST3182

76' : 18282-1602
RST4012

77' : 18326-1542
RBR 9

85' : 18369-1617
ARA 110

87' : 18314-1824
SEE 354AB

88' : 18266-1612
J 461



Selections
Full WDS
Binocular doubles
Binary Systems
Triple Systems
Quadruple Systems
Multiple Systems
Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

18317-1658 HU 243 (HD 170741)

 
 
18h 31m 44.65s -16° 57' 32.1" P.A. 346.00 sep 1.4 mag 10.34,10.74 Sp B9III
 
 
Coord 2000 18317-1658 Discov num HU  243 Comp Coord arcsec 2000 18 31 44.65 -16 57 32.1
Date first 1900 Date last 1991 Obs 7
Pa first 355 Pa last 346.4 P.A. Now (θ) 346.4°
Sep first 1.3 Sep last 1.429 Sep. Now (ρ) 1.429"
Mag pri 10.34 Mag sec 10.74 delta mag (ΔM) 0.4 Spectral class B9III (blue-white)
Pri motion ra -002 Sec motion ra -002
Pri motion dec -007 Sec motion dec -007
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 170741 Constellation Sagittarius Tycho2 6270-01039-2 Gaia DR2 4096783932871292288
HD 170741
 
 
WDS 18317-1658 HU 243 (HD 170741) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Hu_1896 not - Hussey, W.F. 1896PASP....8..183H
Hu_1896 PASP 8, 183, 1896
Hu_1897 Ma - Hussey, W.J. 1897AJ.....17...97H
Hu_1897 AJ 17, 97, 1897
Hu_1898 Ma j Hussey, W.J. 1898AJ.....18..145H
Hu_1898 AJ 18, 145, 1898
Hu_1899 Ma j Hussey, W.J. 1899AN....150..175H
Hu_1899 AN 150, 175, 1899
Hu_1900a Ma - Hussey, W.J. 1900AJ.....20..192H
Hu_1900a AJ 20, 192, 1900
Hu_1900b Ma - Hussey, W.J. 1900AJ.....21...35H
Hu_1900b AJ 21, 35, 1900
Hu_1900c Ma j Hussey, W.J. 1900AN....152..329H
Hu_1900c AN 152, 329, #3645, 1900
Hu_1901a Ma j Hussey, W.J. 1901PLicO...5.....H
Hu_1901a +orb Pub. Lick Obs. 5, 1901
Hu_1901b Ma j Hussey, W.J. 1901LicOB...1...82H
Hu_1901b Lick Obs. Bull. 1, 82, 1901
Hu_1902a Ma j Hussey, W.J. 1902LicOB...1..161H
Hu_1902a Lick Obs. Bull. 1, 161, 1902
Hu_1902b Ma j Hussey, W.J. 1902LicOB...2....1H
Hu_1902b Lick Obs. Bull. 2, 1, 1902
Hu_1903a Ma j Hussey, W.J. 1903LicOB...2...73H
Hu_1903a Lick Obs. Bull. 2, 73, 1903
Hu_1903b Ma j Hussey, W.J. 1903LicOB...2..115H
Hu_1903b Lick Obs. Bull. 2, 115, 1903
Hu_1904a Ma j Hussey, W.J. 1904LicOB...2..180H
Hu_1904a Lick Obs. Bull. 2, 180, 1904
Hu_1904b Ma - Hussey, W.J. 1904LicOB...3...53H
Hu_1904b Lick Obs. Bull. 3, 53, 1904
Hu_1905a Ma - Hussey, W.J. 1905LicOB...3...95H
Hu_1905a Lick Obs. Bull. 3, 95, 1905
Hu_1905b Ma - Hussey, W.J. 1905LicOB...3..116H
Hu_1905b Lick Obs. Bull. 3, 116, 1905
Hu_1905c Ma - Hussey, W.J. 1905LicOB...3..151H
Hu_1905c Lick Obs. Bull. 3, 151, 1905
Hu_1906A Ma - Hussey, W.J. 1906MmRAS..56....1L
Hu_1906A cited by Lewis (MemRAS 56, 1, 1906)
Hu_1906B Ma - Hussey, W.J. 1906QB821.B972.....
Hu_1906B cited in BDS (Burnham Double Star Cat.), 1906
Hu_1907 Ma - Hussey, W.J. 1907LicOB...4..124H
Hu_1907 Lick Obs. Bull. 4, 124, 1907
Hu_1910 Ma - Hussey, W.J. 1910AJ.....21..105H
Hu_1910 AJ 21, 105, 1910
Hu_1911 Ma - Hussey, W.J. 1911LicOB...6..182H
Hu_1911 Lick Obs. Bull. 6, 182, 1911
Hu_1912a Ma - Hussey, W.J. 1915POMic...1..147H
Hu_1912a Pub. Univ. Michigan Obs. 1, 147, 1912
Hu_1912b Ma - Hussey, W.J. 1915POMic...1..160H
Hu_1912b Pub. Univ. Michigan Obs. 1, 160, 1912
Hu_1912c Ma - Hussey, W.J. 1915POMic...1..167H
Hu_1912c Pub. Univ. Michigan Obs. 1, 167, 1912
Hu_1927A Ma - Hussey, W.J. 1927sdsc.book......
Hu_1927A cited in SDS (Southern Double Star Cat.), 1927
Hu_1932A Ma - Hussey, W.J. 1932QB821.A43......
Hu_1932A cited in ADS (Aitken Double Star Cat.), 1932
Hu_9999 Ma - Hussey, W.J. ...................
Hu_9999 Unpublished, manuscript or reference not found.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18317-1658 HU 243 1991 7 346 1.4 10.34 10.74 B9III 183144.65-165732.1

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

 
 
WDS 18317-1658 HU 243 (HD 170741) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18317-1658 HU 243 (HD 170741) : MEASURES
 
 
No records found.

 
 
WDS 18317-1658 (HD 170741) : VIRTUAL EYEPIECE
 
 

18317-1658 HU 243A mag 10.34 Sp B9III 18317-1658 HU 243B sep 1.4 P.A. 347.00 mag 10.74 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 18317-1658 (HD 170741) : ALADIN DSS IMAGE @ 18h 31m 44.65s -16° 57' 32.1"
 
 
 
 
WDS 18317-1658 HU 243 (HD 170741) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18317-1658 HU 243 distance=0' 18326-1657 ARA 283AB distance=13' 18326-1657 ARA 283AC distance=13' 18328-1656 ARA 106 distance=15' 18320-1641 ARA 105 distance=19' 18318-1718 KPP4112 distance=21' 18307-1639 ARA 104 distance=25' 18338-1710 J 2216 distance=32' 18311-1730 J 1744 distance=35' 18344-1707 J 2217 distance=39' 18332-1620 ARA 107 distance=44' 18284-1702 ARA 282 distance=49' 18351-1659 MCA 52 distance=49' 18347-1632 ARA 108 distance=50' 18342-1741 ARA 284 distance=57' 18307-1559 ARA 103 distance=61' 18295-1606 TDT 909 distance=61' 18275-1711 RST3181 distance=63' 18363-1649 ARA 109 distance=67' 18360-1625 TDT 954 distance=70' 18271-1719 HDS2609 distance=71' 18269-1712 BU 965 distance=71' 18280-1747 RST3182 distance=73' 18282-1602 RST4012 distance=76' 18326-1542 RBR 9 distance=77' 18369-1617 ARA 110 distance=85' 18314-1824 OCC 22Aa,Ab distance=87' 18314-1824 SEE 354AB distance=87' 18266-1612 J 461 distance=88' 18269-1753 ARA 281 distance=88' 18307-1530 J 1653 distance=90' 18375-1619 ARA 111 distance=92' 18290-1823 ARA 485 distance=95' 18254-1631 HU 64AB distance=96' 18254-1631 HU 64AC distance=96' 18254-1631 HU 64AD distance=96' 18377-1742 FEN 32 distance=97' 18299-1522 BRT 632 distance=99' 18247-1648 KRV 49 distance=101' 18264-1805 OCC9065 distance=102' 18284-1527 FOX 82 distance=103' 18260-1801 ARA 479 distance=103' 18268-1814 FEN 30 distance=104' 18293-1517 HU 67 distance=107' 18302-1844 OCC 988 distance=109' 18356-1833 RBR 10 distance=111' 18267-1822 ARA 481 distance=111' 18275-1522 FOX 229C,DE distance=111' 18275-1522 FOX 229DE distance=111' 18241-1734 J 2127 distance=112' 18264-1819 ARA 480 distance=112' 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 18317-1658 HU 243 346 1.4
Show 18326-1657 ARA 283 AB 34 11.9 13
Show 18326-1657 ARA 283 AC 143 13.8 13
Show 18328-1656 ARA 106 160 10.1 15
Show 18320-1641 ARA 105 144 14.5 19
Show 18318-1718 KPP4112 250 1.5 21
Show 18307-1639 ARA 104 205 11.1 25
Show 18338-1710 J 2216 19 3.6 32
Show 18311-1730 J 1744 249 2.9 35
Show 18344-1707 J 2217 300 5.8 39
Show 18332-1620 ARA 107 221 8.3 44
Show 18284-1702 ARA 282 265 12.9 49
Show 18351-1659 MCA 52 145 0.2 49
Show 18347-1632 ARA 108 17 16.2 50
Show 18342-1741 ARA 284 69 5.4 57
Show 18307-1559 ARA 103 189 13.9 61
Show 18295-1606 TDT 909 85 1.7 61
Show 18275-1711 RST3181 110 1.4 63
Show 18363-1649 ARA 109 32 12.6 67
Show 18360-1625 TDT 954 204 2.0 70
Show 18271-1719 HDS2609 105 1.7 71
Show 18269-1712 BU 965 109 1.5 71
Show 18280-1747 RST3182 4 2.7 73
Show 18282-1602 RST4012 113 0.2 76
Show 18326-1542 RBR 9 250 7.3 77
Show 18369-1617 ARA 110 279 15.0 85
Show 18314-1824 OCC 22 Aa,Ab -1 0.1 87
Show 18314-1824 SEE 354 AB 182 23.2 87
Show 18266-1612 J 461 350 2.8 88
Show 18269-1753 ARA 281 102 13.8 88
Show 18307-1530 J 1653 237 6.7 90
Show 18375-1619 ARA 111 197 9.2 92
Show 18290-1823 ARA 485 185 9.8 95
Show 18254-1631 HU 64 AB 12 3.7 96
Show 18254-1631 HU 64 AC 18 15.6 96
Show 18254-1631 HU 64 AD 349 24.7 96
Show 18377-1742 FEN 32 119 4.2 97
Show 18299-1522 BRT 632 321 4.9 99
Show 18247-1648 KRV 49 331 7.9 101
Show 18264-1805 OCC9065 306 0.2 102
Show 18284-1527 FOX 82 73 4.4 103
Show 18260-1801 ARA 479 136 8.1 103
Show 18268-1814 FEN 30 47 3.4 104
Show 18293-1517 HU 67 322 1.7 107
Show 18302-1844 OCC 988 -1 0.1 109
Show 18356-1833 RBR 10 320 4.9 111
Show 18267-1822 ARA 481 7 11.2 111
Show 18275-1522 FOX 229 C,DE 243 6.7 111
Show 18275-1522 FOX 229 DE 328 2.7 111
Show 18241-1734 J 2127 48 5.0 112
Show 18264-1819 ARA 480 279 10.1 112

 
 
WDS 18317-1658 : COMPONENTS
 
 
  A
B pa=347.0°
sep=1.43"
 
 
18317-1658 A
 
 
Componente originario normalizzato AB Name HD 170741 Coord arcsec 2000 183144.65-165732.1 Mag 10.34
Spectral class B9III (blue-white) PmRA -2.00 PmDE -7.0 Tycho2 6270-01039-2
Tycho2
Tycho2 6270-01039-2 Pflag P RAmdeg 277.93604935 DEmdeg -16.95891424
PmRA -2.0 PmDE -6.5 E RAmdeg 33 E DEmdeg 43
E pmRA 2.2 E pmDE 2.2 EpRAm 1988.88 EpDEm 1986.96
Num 4 Q RAmdeg 0.3 Q DEmdeg 1.5 Q pmRA 0.4
Q pmDE 1.6 BTmag 10.521 E BTmag 0.052 VTmag 10.339
E VTmag 0.067 Prox 14 TYC HIP
CCDM RAdeg 277.93608250 DEdeg -16.95901194 EpRA 1990 1.75
EpDE 1990 1.69 E RAdeg 33.7 E DEdeg 44.0 Posflg D
Corr 0.1
 
 
18317-1658 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 183144.63-165730.7 Mag 10.74 PmRA -2.00
PmDE -7.0 Tycho2 6270-01039-1 HD 170741 Calc delta mag 0.4
Calc coord yes
Tycho2
Tycho2 6270-01039-1 Pflag P RAmdeg 277.93604935 DEmdeg -16.95891424
PmRA -2.0 PmDE -6.5 E RAmdeg 33 E DEmdeg 43
E pmRA 2.2 E pmDE 2.2 EpRAm 1988.88 EpDEm 1986.96
Num 4 Q RAmdeg 0.3 Q DEmdeg 1.5 Q pmRA 0.4
Q pmDE 1.6 BTmag 11.111 E BTmag 0.080 VTmag 10.744
E VTmag 0.097 Prox 14 TYC T HIP
CCDM RAdeg 277.93598500 DEdeg -16.95862611 EpRA 1990 1.75
EpDE 1990 1.68 E RAdeg 49.5 E DEdeg 64.8 Posflg D
Corr 0.1