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Doubles in session


Current system
18395-2101
RST 5121 AB


Nearby doubles
9' : 18389-2103
WSI 90AB

11' : 18398-2052
OCC1078

17' : 18387-2114
ARA1551

18' : 18385-2110
B 1888

21' : 18406-2115
ARA1552

24' : 18378-2103
ARA1549

24' : 18393-2038
ARA1156

26' : 18405-2040
OCC1079

31' : 18416-2108
KPP 422

32' : 18406-2034
OCC1080

32' : 18379-2124
OCC 33

37' : 18391-2025
ARA1155

41' : 18375-2130
ARA1548

41' : 18372-2039
DON 914

42' : 18407-2139
RST5122

43' : 18386-2020
DON 917

49' : 18406-2016
ARA1157

50' : 18386-2149
J 1633AB

50' : 18365-2128
ARA1547

52' : 18431-2051
ARA1159

58' : 18381-2156
ARA1895

59' : 18367-2019
HO 567

60' : 18354-2118
ARA1544

67' : 18360-2146
ARA1545

67' : 18407-1957
ARA1158

69' : 18439-2130
KPP4118



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.

18395-2101 RST 5121 AB

 
 
18h 39m 29.07s -21° 01' 15.9" P.A. 21.00 sep 4.2 mag 9.62,15.90 Sp A0V
 
 
Coord 2000 18395-2101 Discov num RST5121 Comp AB Coord arcsec 2000 18 39 29.07 -21 01 15.9
Date first 1941 Date last 2015 Obs 2
Pa first 21 Pa last 21.3 P.A. Now (θ) 21.3°
Sep first 3.8 Sep last 4.176 Sep. Now (ρ) 4.176"
Mag pri 9.62 Mag sec 15.90 delta mag (ΔM) 6.28 Spectral class A0V (white)
Pri motion ra +008 Sec motion ra
Pri motion dec -006 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
18395-2101 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 187097 18 39 29 -21 01 16 RST 5121 AB 2015 2 21 4.2 9.62 15.90 6.28 <===
Show HD 172157 187097 18 39 29 -21 01 16 HJ 2833 AC 2015 11 314 21.8 9.62 10.56 0.94
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius SAO 187097 Tycho2 6279-01109-1 Gaia DR2 4079689692520011392
HD 172157
 
 
WDS 18395-2101 RST 5121 AB : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
HJ_1826 Mb - Herschel, J.F.W. 1826MmRAS...2..459H
HJ_1826 MemRAS 2, 459, 1826
HJ_1829a Mb - Herschel, J.F.W. 1829MmRAS...3...47H
HJ_1829a MemRAS 3, 47, 1829
HJ_1829b Mb - Herschel, J.F.W. 1829MmRAS...3..177H
HJ_1829b MemRAS 3, 177, 1829
HJ_1831 Ma - Herschel, J.F.W. 1831MmRAS...4..331H
HJ_1831 +Mb MemRAS 4, part 2, 331, 1831
HJ_1833a Ma - Herschel, J.F.W. 1833MmRAS...5...13H
HJ_1833a +Mb MemRAS 5, 13, 1833
HJ_1833b orb - Herschel, J.F.W. 1833MmRAS...5..171H
HJ_1833b MemRAS 5, 171, 1833
HJ_1833c Mb - Herschel, J.F.W. 1833MmRAS...6....1H
HJ_1833c MemRAS 6, 1, 1833
HJ_1833d orb - Herschel, J.F.W. 1833MmRAS...6..149H
HJ_1833d MemRAS 6, 149, 1833
HJ_1835 Ma - Herschel, J.F.W. 1835MmRAS...8...37H
HJ_1835 +Mb MemRAS 8, 37, 1835
HJ_1836 Mb - Herschel, J.F.W. 1836MmRAS...9..193H
HJ_1836 MemRAS 9, 193, 1836
HJ_1847a Ma j Herschel, J.F.W. .
HJ_1847a +Mb Cape Results, London, 1847 (Cape of Good Hope Astronomical Observations 1834-1838)
HJ_1847b Ma j Herschel, J.F.W. .
HJ_1847b Cape Results, London, 1847
HJ_1850 orb - Herschel, J.F.W. 1850MmRAS..18...47H
HJ_1850 MemRAS 18, 47, 1850
HJ_1870 Mb - Herschel, J.F.W. 1870MmRAS..38....1H
HJ_1870 MemRAS 38, 1, 1870
HJ_1874A - Herschel, J.F.W. 1874MNRAS..35...28B
HJ_1874A cited by Burnham (MNRAS 35, 28, 1874)
HJ_1875A Ma - Herschel, J.F.W. 1875AN.....85..323D
HJ_1875A +Mb cited by Doberck, 1875 (see Dob1875b,f,g,h)
HJ_1880A Ma - Herschel, J.F.W. 1880Obs.....3..508G
HJ_1880A +Mb cited by Gledhill (Obs 3, 508, 1880)
HJ_1880B Mb - Herschel, J.F.W. 1880MNRAS..40..497B
HJ_1880B cited by Burnham (MNRAS 40, 497, 1880)
HJ_1897A Ma j Herschel, J.F.W. 1897MNRAS..57..541S
HJ_1897A cited by See (MNRAS 57, 541, 1897)
HJ_1905A Ma - Herschel, J.F.W. 1905LicOB...3..147A
HJ_1905A +Mb cited by Aitken (Lick Obs. Bull. 3, 147, 1905)
HJ_1906A Ma - Herschel, J.F.W. 1906MmRAS..56....1L
HJ_1906A +Mb cited by Lewis (MemRAS 56, 1, 1906)
HJ_1906B Ma - Herschel, J.F.W. 1906QB821.B972.....
HJ_1906B +Mb cited in BDS (Burnham Double Star Cat.), 1906
HJ_1927A Mb - Herschel, J.F.W. 1927sdsc.book......
HJ_1927A cited in SDS (Southern Double Star Catalog), 1927
HJ_1932A Mb - Herschel, J.F.W. 1932QB821.A43......
HJ_1932A cited in ADS (Aitken Double Star Cat.), 1932
HJ_9999 M j Herschel, J.F.W. ...................
HJ_9999 +Ma Unpublished, manuscript or reference not found.
Rst1933 T - Rossiter, R.A. 1933MmRAS..65...27R
Rst1933 MemRAS 65, 27, 1933
Rst1937 Ma - Rossiter, R.A. 1937MmRAS..65...51R
Rst1937 MemRAS 65, 51, 1937
Rst1943 Ma - Rossiter, R.A. 1943POMic...8..133R
Rst1943 Pub. Univ. Michigan Obs. 8, 133, 1943
Rst1944 - Rossiter, R.A. 1944POMic...9....1R
Rst1944 Pub. Univ. Michigan Obs. 9, 1, 1944
Rst1947 Ma - Rossiter, R.A. 1947POMic...9....7R
Rst1947 Pub. Univ. Michigan Obs. 9, 7, 1947
Rst1955 Ma j Rossiter, R.A. 1955POMic..11....1R
Rst1955 +P+ Pub. Univ. Michigan Obs. 11, 1, 1955
Rst1964 Ma - Rossiter, R.A. 1964POMic...9...73R
Rst1964 Pub. Univ. Michigan Obs. 9, 73, 1964
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18395-2101 RST5121 AB 1941 1 21 3.8 9.62 15.90 A0V 183929.07-210115.9
18395-2101 RST5121 AB 2015 2 21 4.2 9.62 15.90 A0V 183929.07-210115.9

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

 
 
WDS 18395-2101 RST 5121 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18395-2101 RST 5121 AB : MEASURES
 
 
No records found.

 
 
WDS 18395-2101 : VIRTUAL EYEPIECE
 
 

18395-2101 RST5121A mag 9.62 Sp A0V 18395-2101 RST5121B sep 4.1 P.A. 20.00 mag 15.9 18395-2101 HJ 2833C sep 21.1 P.A. 316.10 mag 10.56 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 18395-2101 : ALADIN DSS IMAGE @ 18h 39m 29.07s -21° 01' 15.9"
 
 
 
 
WDS 18395-2101 RST 5121 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

18395-2101 RST5121AB distance=0' 18389-2103 WSI 90AB distance=9' 18389-2103 TNN 11AC distance=9' 18389-2103 TNN 11AD distance=9' 18398-2052 OCC1078 distance=11' 18387-2114 ARA1551 distance=17' 18385-2110 B 1888 distance=18' 18406-2115 ARA1552 distance=21' 18378-2103 ARA1549 distance=24' 18393-2038 ARA1156 distance=24' 18405-2040 OCC1079 distance=26' 18416-2108 KPP 422 distance=31' 18406-2034 OCC1080 distance=32' 18379-2124 OCC 33 distance=32' 18391-2025 ARA1155 distance=37' 18375-2130 ARA1548 distance=41' 18372-2039 DON 914 distance=41' 18407-2139 RST5122 distance=42' 18386-2020 DON 917 distance=43' 18406-2016 ARA1157 distance=49' 18386-2149 J 1633AB distance=50' 18386-2149 J 1633BC distance=50' 18365-2128 ARA1547 distance=50' 18431-2051 ARA1159 distance=52' 18381-2156 ARA1895 distance=58' 18367-2019 HO 567 distance=59' 18354-2118 ARA1544 distance=60' 18360-2146 ARA1545 distance=67' 18407-1957 ARA1158 distance=67' 18439-2130 KPP4118 distance=69' 18361-2154 ARA1546 distance=72' 18352-2140 HU 246 distance=72' 18436-2013 DON 920 distance=76' 18452-2117 ARA1553 distance=81' 18338-2119 ARA1543 distance=82' 18337-2048 ARA1154 distance=83' 18362-1950 ARA 756 distance=85' 18453-2039 EVS 37AB distance=85' 18453-2039 EVS 37AC distance=85' 18453-2039 EVS 37AD distance=85' 18453-2039 EVS 37AE distance=85' 18453-2039 EVS 37AF distance=85' 18453-2039 GAA 14Aa,Ab distance=85' 18453-2039 KRV 18AG distance=85' 18453-2039 KRV 18AH distance=85' 18337-2132 ARA1542 distance=87' 18353-2205 WNO 22 distance=87' 18425-1943 ARA 761 distance=89' 18336-2030 DON 911 distance=89' 18439-1954 STN 44 distance=93' 18441-1954 ARA1160 distance=93' 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 18395-2101 RST5121 AB 21 4.2
Show 18395-2101 HJ 2833 AC 314 21.8
Show 18389-2103 WSI 90 AB 138 0.0 9
Show 18389-2103 TNN 11 AC 340 5.0 9
Show 18389-2103 TNN 11 AD 30 6.4 9
Show 18398-2052 OCC1078 -1 0.7 11
Show 18387-2114 ARA1551 137 6.1 17
Show 18385-2110 B 1888 302 4.8 18
Show 18406-2115 ARA1552 287 12.6 21
Show 18378-2103 ARA1549 188 14.1 24
Show 18393-2038 ARA1156 16 15.8 24
Show 18405-2040 OCC1079 -1 0.0 26
Show 18416-2108 KPP 422 299 4.7 31
Show 18406-2034 OCC1080 -1 0.0 32
Show 18379-2124 OCC 33 -1 0.1 32
Show 18391-2025 ARA1155 238 11.6 37
Show 18375-2130 ARA1548 336 14.8 41
Show 18372-2039 DON 914 174 0.4 41
Show 18407-2139 RST5122 189 2.1 42
Show 18386-2020 DON 917 51 1.1 43
Show 18406-2016 ARA1157 356 9.5 49
Show 18386-2149 J 1633 AB 143 36.8 50
Show 18386-2149 J 1633 BC 149 7.5 50
Show 18365-2128 ARA1547 230 11.0 50
Show 18431-2051 ARA1159 84 11.7 52
Show 18381-2156 ARA1895 26 16.0 58
Show 18367-2019 HO 567 165 1.3 59
Show 18354-2118 ARA1544 180 6.1 60
Show 18360-2146 ARA1545 203 12.9 67
Show 18407-1957 ARA1158 68 6.6 67
Show 18439-2130 KPP4118 341 3.9 69
Show 18361-2154 ARA1546 173 10.4 72
Show 18352-2140 HU 246 68 2.6 72
Show 18436-2013 DON 920 336 1.4 76
Show 18452-2117 ARA1553 273 10.1 81
Show 18338-2119 ARA1543 253 8.5 82
Show 18337-2048 ARA1154 288 7.2 83
Show 18362-1950 ARA 756 325 9.5 85
Show 18453-2039 EVS 37 AB 128 3.1 85
Show 18453-2039 EVS 37 AC 67 10.8 85
Show 18453-2039 EVS 37 AD 156 10.6 85
Show 18453-2039 EVS 37 AE 271 11.5 85
Show 18453-2039 EVS 37 AF 330 18.2 85
Show 18453-2039 GAA 14 Aa,Ab 349 0.0 85
Show 18453-2039 KRV 18 AG 250 29.9 85
Show 18453-2039 KRV 18 AH 304 34.9 85
Show 18337-2132 ARA1542 114 11.6 87
Show 18353-2205 WNO 22 269 11.4 87
Show 18425-1943 ARA 761 242 6.9 89
Show 18336-2030 DON 911 348 2.1 89
Show 18439-1954 STN 44 316 1.6 93

 
 
WDS 18395-2101 : COMPONENTS
 
 
  A B
B pa=20.0°
sep=4.14"
 
C pa=316.1°
sep=21.05"
pa=305.1°
sep=19.59"
 
 
18395-2101 A
 
 
Coord arcsec 2000 183929.07-210115.9 Mag 9.62 Spectral class A0V (white) PmRA 8.00
PmDE -6.0 SAO 187097 Tycho2 6279-01109-1 HD 172157
DM BD-21 5088
Tycho2
Tycho2 6279-01109-1 Pflag RAmdeg 279.87115269 DEmdeg -21.02108803
PmRA 8.3 PmDE -6.2 E RAmdeg 19 E DEmdeg 25
E pmRA 1.5 E pmDE 1.7 EpRAm 1986.70 EpDEm 1983.48
Num 8 Q RAmdeg 1.2 Q DEmdeg 0.6 Q pmRA 1.2
Q pmDE 0.6 BTmag 10.029 E BTmag 0.041 VTmag 9.621
E VTmag 0.040 Prox 217 TYC T HIP
CCDM RAdeg 279.87112972 DEdeg -21.02107083 EpRA 1990 1.82
EpDE 1990 1.62 E RAdeg 21.3 E DEdeg 30.9 Posflg
Corr 0.0
SAO
SAO 187097 DelFlag RA1950 PmRA1950 0
DE1950 PmDE1950 -0.004 Vmag 9.4 SpType A0
Double code Source 23 CatNum 7822 DM BD-21 5088
DMcomp BDsup HD 172157 M HD 0
GC RA1950rad 4.87164196 DE1950rad -0.36768763 PmRA2000 0
PmDE2000 -0.004
CCDM
Ccdm 18395-2101 RComp Comp A Note1
Note2 Discov num DRAs -0.96 DDEs -16.0
R dRAs 41 Year Theta Rho
Obs 3 Vmag 9.2 Sp A0 PmNote *
PmRA 0 PmDE -4 Dm number -21 5088 Cat1 BD
Name2 187097 Cat2 SAO HD 172157 M HD
ADS BDS B 8683 M ADS BDS N IDS IDS 18335S2107A
HIC
 
 
18395-2101 B
 
 
Coord arcsec 2000 183929.17-210112.0 Mag 15.9 Calc delta mag 6.28 Calc coord yes
CCDM
Ccdm 18395-2101 RComp Comp B Note1
Note2 Discov num RST5121 DRAs DDEs
R dRAs Year 1941 Theta 021 Rho 3.8
Obs 1 Vmag 15.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 18335S2107B
HIC
 
 
18395-2101 C
 
 
Coord arcsec 2000 183928.03-210100.7 Mag 10.56 PmRA -2.00 PmDE 1.0
Tycho2 6279-01294-1 Calc delta mag 0.94 Calc coord yes
Tycho2
Tycho2 6279-01294-1 Pflag RAmdeg 279.86650583 DEmdeg -21.01684713
PmRA -5.2 PmDE 3.6 E RAmdeg 48 E DEmdeg 65
E pmRA 2.3 E pmDE 2.5 EpRAm 1985.13 EpDEm 1980.19
Num 4 Q RAmdeg 0.7 Q DEmdeg 1.5 Q pmRA 0.7
Q pmDE 1.5 BTmag 11.250 E BTmag 0.100 VTmag 10.561
E VTmag 0.081 Prox 217 TYC T HIP
CCDM RAdeg 279.86651833 DEdeg -21.01685528 EpRA 1990 1.80
EpDE 1990 1.63 E RAdeg 50.3 E DEdeg 70.6 Posflg
Corr -0.1
CCDM
Ccdm 18395-2101 RComp Comp C Note1
Note2 Discov num HJ 2833 DRAs -2.04 DDEs -1.4
R dRAs 41 Year 1912 Theta 314 Rho 20.6
Obs 1 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS B 8683 M ADS BDS N IDS IDS 18335S2107C
HIC