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Doubles in session


Current system
17335+5734
MLR 571
HD 159870


Nearby doubles
19' : 17323+5718
LDS1449

29' : 17301+5743
ES 1742

41' : 17319+5655
ES 2659

54' : 17285+5657
ES 1741

55' : 17328+5639
SLN 37

56' : 17400+5747
MLR 572

56' : 17270+5718
ES 2658

63' : 17373+5640
STI2354

79' : 17432+5744
STI2355

81' : 17258+5643
RAO 370

84' : 17433+5703
LDS1450

92' : 17267+5621
A 1151

93' : 17325+5905
GRV1151

96' : 17279+5610
A 1152

99' : 17444+5819
LDS1451

106' : 17437+5842
CRB 201

107' : 17398+5908
ARG 103

107' : 17436+5844
ALP 24

109' : 17337+5545
GRV1152

109' : 17235+5623
LDS4741

110' : 17220+5638
ES 2657AB

111' : 17327+5924
MLR 355

116' : 17386+5546
STF2199

117' : 17211+5637
LDS1444

120' : 17480+5707
MLB1077AB

126' : 17195+5832
KR 46



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.

17335+5734 MLR 571 (HD 159870)

 
 
17h 33m 31.60s +57° 33' 31.4" P.A. 330.00 sep 0.1 mag 7.23,6.87 Sp A5V+G5III dist. 250 pc (815.5 l.y.)
 
 
Coord 2000 17335+5734 Discov num MLR 571 Comp Coord arcsec 2000 17 33 31.60 +57 33 31.4
Date first 1979 Date last 2011 Obs 42
Pa first 10 Pa last 330.1 P.A. Now (θ) 66.3°
Sep first 0.2 Sep last 0.059 Sep. Now (ρ) 0.13"
Mag pri 7.23 Mag sec 6.87 delta mag (ΔM) 0.36 Spectral class A5V+G5III (white/yellow)
Pri motion ra +001 Sec motion ra
Pri motion dec +004 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 159870 Constellation Draco SAO 30464 HIP 85923
Tycho2 3897-01058-1 Gaia DR2 1422359405973750784 HD 159870 HR 6560
GC 23838 BD BD+57 1780 Distance 250 Distance ly 815.5
 
 
ORBITAL ELEMENTS
 
 
Period (P)71.15y Periastron (T)2007.05y Semi-major axis (a)0.128a
Eccentricity (e)0.374 Inclination (i)144.1° Longitude of periastron (ω)0.7°
Node (Ω)203.1° Notesn ReferenceGrf2013d
Equinox2000 Last observation2009 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 271.1 0.082
2001 261.7 0.081
2002 252.0 0.080
2003 242.1 0.079
2004 232.3 0.080
2005 222.5 0.080
2006 212.7 0.080
2007 203.0 0.080
2008 193.3 0.080
2009 183.5 0.080
2010 173.6 0.079
2011 163.7 0.079
2012 153.7 0.079
2013 143.9 0.080
2014 134.4 0.082
2015 125.3 0.084
2016 116.8 0.087
2017 108.9 0.091
2018 101.7 0.095
2019 95.1 0.100
2020 89.2 0.105
2021 83.7 0.110
2022 78.8 0.115
2023 74.3 0.120
2024 70.1 0.125
2025 66.3 0.130
2026 62.7 0.135
2027 59.4 0.139
2028 56.3 0.144
2029 53.4 0.148
2030 50.6 0.152
2031 48.0 0.155
2032 45.4 0.159
2033 43.0 0.162
2034 40.7 0.165
2035 38.4 0.167
2036 36.2 0.169
2037 34.1 0.171
2038 32.0 0.173
2039 29.9 0.174
2040 27.8 0.175
2041 25.8 0.176
2042 23.8 0.176
2043 21.8 0.176
2044 19.8 0.176
2045 17.7 0.175
2046 15.7 0.174
2047 13.6 0.173
2048 11.5 0.171
2049 9.4 0.169
2050 7.2 0.167


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds17335%2B5734a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS 17335+5734 MLR 571 (HD 159870) : NOTES
 
 
discov_num notes refcode
MLR 571 1980.7255: This measure was incorrectly attributed to HR 6053 in
McAlister et al. (1983), with an additional factor of two error in the
separation. McA1983
 
 
REFERENCES
 
 
refcode metd author reference
Grf2013d orb - Griffin, R.F. & Mason, B.D. 2013IAUDS.181....1H
Grf2013d Inf. Circ. 181, 1, 2013
McA1983 Sc j McAlister, H.A., Hendry, E.M., Hartkopf, W.I., Campbell, B.G., & Fekel, F.C. 1983ApJS...51..309M
McA1983 ApJS 51, 309, 1983
 
 
DISCOVERER
 
 
discov author
GRF Griffin, R.F.
GRF Griffin, R.F., Griffin, R.E.M., Snyder, L.F., Schroder, K.-P., Pray, D.,
GRF Ohshima, O., Tokoro, T., Clark, W.E., Williams, D.B., Houchen, M.B., Arai, K.,
GRF Krisciunas, K. & Watson, J.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr dm_number notes coord_arcsec_2000
17335+5734 MLR 571 1997 37 295 0.1 7.23 6.87 A5V+G5III +57 1780 NO 173331.60+573331.4
17335+5734 MLR 571 2007 38 196 0.1 7.23 6.87 A5V+G5III +57 1780 NO 173331.60+573331.4
17335+5734 MLR 571 2009 39 179 0.1 7.23 6.87 A5V G5III +57 1780 NOD 173331.60+573331.4
17335+5734 MLR 571 2011 41 330 0.1 7.23 6.87 A5V+G5III +57 1780 NO 173331.60+573331.4

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

 
 
WDS 17335+5734 MLR 571 (HD 159870) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 17335+5734 MLR 571 (HD 159870) : MEASURES
 
 
No records found.

 
 
WDS 17335+5734 (HD 159870) : VIRTUAL EYEPIECE
 
 

17335+5734 MLR 571A mag 7.23 Sp A5V 17335+5734 MLR 571B sep 0.1 P.A. 330.10 mag 6.87 Sp G5III 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 17335+5734 (HD 159870) : ALADIN DSS IMAGE @ 17h 33m 31.60s +57° 33' 31.4"
 
 
 
 
WDS 17335+5734 MLR 571 (HD 159870) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

17335+5734 MLR 571 distance=0' 17323+5718 LDS1449 distance=19' 17301+5743 ES 1742 distance=29' 17319+5655 ES 2659 distance=41' 17285+5657 ES 1741 distance=54' 17328+5639 SLN 37 distance=55' 17400+5747 MLR 572 distance=56' 17270+5718 ES 2658 distance=56' 17373+5640 STI2354 distance=63' 17432+5744 STI2355 distance=79' 17258+5643 RAO 370 distance=81' 17433+5703 LDS1450 distance=84' 17267+5621 A 1151 distance=92' 17325+5905 GRV1151 distance=93' 17279+5610 A 1152 distance=96' 17444+5819 LDS1451 distance=99' 17437+5842 CRB 201 distance=106' 17398+5908 ARG 103 distance=107' 17436+5844 ALP 24 distance=107' 17220+5638 ES 2657BC distance=109' 17337+5545 GRV1152 distance=109' 17235+5623 LDS4741 distance=109' 17220+5638 ES 2657AB distance=110' 17220+5638 ABH 90AD distance=110' 17220+5638 ES 2657AC distance=110' 17327+5924 MLR 355 distance=111' 17386+5546 STF2199 distance=116' 17211+5637 LDS1444 distance=117' 17480+5707 MLB1077AB distance=120' 17480+5707 MLB1077AC distance=120' 17195+5832 KR 46 distance=126' 17489+5805 STI2359 distance=128' 17240+5547 GRV1136 distance=128' 17366+5943 STI 824 distance=131' 17462+5613 STI2357 distance=131' 17380+5521 GRV1137 distance=138' 17457+5914 ES 1743BC distance=139' 17457+5914 ES 1743AB distance=139' 17159+5732 CVR 858 distance=142' 17174+5638 SLE 82 distance=143' 17322+5511 STFA 35 distance=144' 17510+5709 STI2360 distance=144' 17173+5636 STI2349 distance=145' 17467+5914 TDT 501 distance=145' 17376+5508 KPP1235 distance=150' 17185+5608 ES 1740 distance=150' 17210+5537 GRV1134 distance=154' 17215+5532 ES 2656 distance=157' 17341+6011 ES 1795 distance=158' 17170+5612 SLE 81 distance=158' 17530+5713 MLB 75 distance=159' 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 17335+5734 MLR 571 330 0.1 0
Show 17323+5718 LDS1449 133 18.2 19
Show 17301+5743 ES 1742 28 1.6 29
Show 17319+5655 ES 2659 215 11.7 41
Show 17285+5657 ES 1741 179 2.5 54
Show 17328+5639 SLN 37 241 2.4 55
Show 17400+5747 MLR 572 40 0.7 56
Show 17270+5718 ES 2658 16 9.8 56
Show 17373+5640 STI2354 85 4.4 63
Show 17432+5744 STI2355 46 7.8 79
Show 17258+5643 RAO 370 339 1.0 81
Show 17433+5703 LDS1450 95 18.6 84
Show 17267+5621 A 1151 238 1.1 92
Show 17325+5905 GRV1151 54 30.9 93
Show 17279+5610 A 1152 204 0.2 96
Show 17444+5819 LDS1451 122 12.8 99
Show 17437+5842 CRB 201 189 13.8 106
Show 17398+5908 ARG 103 331 47.3 107
Show 17436+5844 ALP 24 243 26.3 107
Show 17220+5638 ES 2657 BC 73 11.5 109
Show 17337+5545 GRV1152 225 23.8 109
Show 17235+5623 LDS4741 209 86.8 109
Show 17220+5638 ES 2657 AB 96 27.9 110
Show 17220+5638 ABH 90 AD 114 83.7 110
Show 17220+5638 ES 2657 AC 90 39.2 110
Show 17327+5924 MLR 355 209 0.7 111
Show 17386+5546 STF2199 52 2.1 116
Show 17211+5637 LDS1444 118 9.4 117
Show 17480+5707 MLB1077 AB 215 4.3 120
Show 17480+5707 MLB1077 AC 28 23.5 120
Show 17195+5832 KR 46 64 1.6 126
Show 17489+5805 STI2359 90 8.4 128
Show 17240+5547 GRV1136 148 8.5 128
Show 17366+5943 STI 824 33 13.8 131
Show 17462+5613 STI2357 171 11.9 131
Show 17380+5521 GRV1137 59 41.7 138
Show 17457+5914 ES 1743 BC 76 2.5 139
Show 17457+5914 ES 1743 AB 231 27.6 139
Show 17159+5732 CVR 858 191 29.8 142
Show 17174+5638 SLE 82 331 42.4 143
Show 17322+5511 STFA 35 308 62.2 144
Show 17510+5709 STI2360 232 9.9 144
Show 17173+5636 STI2349 60 10.0 145
Show 17467+5914 TDT 501 178 0.6 145
Show 17376+5508 KPP1235 123 9.5 150
Show 17185+5608 ES 1740 315 1.6 150
Show 17210+5537 GRV1134 319 20.8 154
Show 17215+5532 ES 2656 64 11.1 157
Show 17341+6011 ES 1795 147 2.6 158
Show 17170+5612 SLE 81 16 17.5 158
Show 17530+5713 MLB 75 324 2.9 159

 
 
WDS 17335+5734 : COMPONENTS
 
 
  A
B pa=330.1°
sep=0.06"
 
 
17335+5734 A
 
 
Name HD 159870 Coord arcsec 2000 173331.60+573331.4 Mag 7.23 Spectral class A5V (white)
PmRA 1.00 PmDE 4.0 HIP 85923 BD BD+57 1780
Hipparcos
Catalog H HIP 85923 Proxy H RAhms 17 33 31.60
DEdms +57 33 31.4 Vmag 6.15 VarFlag R Vmag H
RAdeg 263.382 DEdeg 57.5587 AstroRef * Plx 4.32
CCDM 6.64 N CCDM M Nsys 1 Ncomp 2
MultFlag C Source S Qual A M HIP BA
Theta 150 Rho 0.123 HD BD BD+57 1780
CD CP Dm number +57 1780 VIred 0.67
SpType A5V+... R SpType Coord arcsec 2000 173331.60+573331.4
Hipparcos 2
HIP 85923 Sn 55 So 3 Nc 2
RArad 4.5968773887 DErad 1.0045889778 Plx 4 PmRA 6.96
PmDE 4.95 E RArad 0.33 E DErad 0.37 E Plx 0.38
E pmRA 0.37 E pmDE 0.49 Hpmag E Hpmag 0.0008
SHp 0.006 VA 0 BV 0.602 E BV 0.005
VI 0.67
CCDM
Ccdm 17335+5734 RComp Comp A Note1
Note2 Discov num DRAs 1.62 DDEs -28.6
R dRAs 81 Year Theta Rho
Obs 2 Vmag 6.8 Sp A5 PmNote @
PmRA 10 PmDE 7 Dm number +57 1780 Cat1 BD
Name2 +57 1121 Cat2 AGK2/3 HD 159870 M HD
ADS BDS M ADS BDS N IDS IDS 17319N5737A
HIC 85923
 
 
17335+5734 B
 
 
Coord arcsec 2000 173331.60+573331.5 Mag 6.87 Spectral class G5III (yellow) SAO 30464
Tycho2 3897-01058-1 HD 159870 HR 6560 GC 23838
DM BD+57 1780 Delta magnitude 0.36 Coordinate calculated yes
Tycho2
Tycho2 3897-01058-1 Pflag RAmdeg 263.38170418 DEmdeg 57.55872103
PmRA 7.0 PmDE 5.6 E RAmdeg 4 E DEmdeg 4
E pmRA 1.0 E pmDE 1.0 EpRAm 1991.26 EpDEm 1991.38
Num 13 Q RAmdeg 1.2 Q DEmdeg 0.8 Q pmRA 1.2
Q pmDE 0.8 BTmag 6.882 E BTmag 0.015 VTmag 6.230
E VTmag 0.010 Prox 999 TYC T HIP 85923
CCDM AB RAdeg 263.38167389 DEdeg 57.55870806 EpRA 1990 1.56
EpDE 1990 1.62 E RAdeg 3.9 E DEdeg 3.8 Posflg P
Corr 0.0
SAO
SAO 30464 DelFlag RA1950 PmRA1950 0.0011
DE1950 PmDE1950 0.013 Vmag 6.2 SpType F2
Double code Source 70 CatNum 23838 DM BD+57 1780
DMcomp BDsup HD 159870 M HD 0
GC 23838 RA1950rad 4.59329074 DE1950rad 1.00515783 PmRA2000 0.0019
PmDE2000 0.014
CCDM
Ccdm 17335+5734 RComp Comp B Note1
Note2 Discov num MLR 571 DRAs DDEs
R dRAs Year 1990 Theta 334 Rho 0.1
Obs 19 Vmag 6.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 17319N5737B
HIC 85923