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Current system
08404+1940
SMR 30 AE


Nearby doubles
6' : 08401+1944
PAT 45

7' : 08408+1940
BOV 47

8' : 08403+1947
BOV 41

8' : 08405+1933
S 574AB
Meleph

10' : 08399+1933
BU 584AB

10' : 08397+1939
HZG 6

18' : 08396+1926
BOV 39

18' : 08391+1941
S 570AB

20' : 08403+1921
CHR 130

21' : 08401+2000
ENG 37AB

27' : 08397+2005
COU 47

28' : 08404+1913
BOV 43

28' : 08391+2000
OCC 637

28' : 08413+1916
KU 32

29' : 08422+1950
SLW 280

30' : 08404+1911
BOV 44

30' : 08400+2009
ARN 105AB

32' : 08403+2012
BOV 40

33' : 08419+1915
SLE 337

35' : 08425+1924
BOV 50

36' : 08382+1922
BOV 35

36' : 08423+2002
COU 382

37' : 08393+2013
BOV 38

37' : 08419+2010
SLE 336AB

37' : 08381+1959
BOV 34

38' : 08411+1904
BOV 48



Selections
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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.

08404+1940 SMR 30 AE

 
 
08h 40m 22.11s +19° 40' 11.9" P.A. 156.00 sep 15.9 mag 6.52,12.50 Sp G9III dist. 218.34 pc (712.23 l.y.)
 
 
Coord 2000 08404+1940 Discov num SMR  30 Comp AE Coord arcsec 2000 08 40 22.11 +19 40 11.9
Date first 2001 Date last 2018 Obs 7
Pa first 158 Pa last 155.6 P.A. Now (θ) 155.6°
Sep first 15.5 Sep last 15.87 Sep. Now (ρ) 15.87"
Mag pri 6.52 Mag sec 12.50 delta mag (ΔM) 5.98 Spectral class G9III (yellow)
Pri motion ra -035 Sec motion ra -037
Pri motion dec -014 Sec motion dec -012
Notes N (See Notes)
rPM=0.073 (< 0.3, Physical double)
This double is physical.
 
 
08404+1940 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 73710 98021 08 40 22 +19 40 12 STF 1254 AB 2017 46 55 20.8 6.44 10.37 3.93
Show 98021 08 40 22 +19 40 12 STF 1254 AC 2018 44 343 62.5 6.52 7.61 1.09
Show 98021 08 40 22 +19 40 12 STF 1254 AD 2017 38 44 83.5 6.52 9.20 2.68
Show 98021 08 40 22 +19 40 12 SMR 30 AE 2018 7 156 15.9 6.52 12.50 5.98 <===
Show 08 40 23 +19 40 24 BOV 42 Ba,Bb 1997 1 25 1.8 9.50 15.10 5.60
Show 98020 08 40 21 +19 41 12 S 572 CD 2016 35 91 72.6 7.61 9.20 1.59
Sextuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cancer SAO 98021 HIP 42549 Tycho2 1395-02963-1
Gaia DR2 661297080936069632 HD 73710 HR 3428 ADS 6921
BD BD+20 2166 Distance 218.34 Distance ly 712.23
 
 
WDS 08404+1940 SMR 30 AE : NOTES
 
 
discov_num notes refcode
STF1254 Algol-type eclipsing binary, per 7.2209 d. Zas2011
Physical with BD+20@2158. A is a spectroscopic binary.
BOV 42 Ba. Praesepe KW 287 = NGC 2632 BDA 287
SB1, P = 7635 d Bov2001
 
 
REFERENCES
 
 
refcode metd author reference
Bov2001 A - Bouvier, J., Duchene, G., Mermilliod, J.-C., & Simon, T. 2001A&A...375..989B
Bov2001 A&A 375, 989, 2001
Zas2011 - Zasche, P. ...................
Zas2011 private communication, 2011
 
 
DISCOVERER
 
 
idgroup discov author
1 S South, J.
16 SMR Schlimmer, J.
71 STF Struve, F.G.W.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
08404+1940 SMR 30 AE 2012 1 154 16.2 6.52 12.50 G9III 084022.11+194011.9
08404+1940 SMR 30 AE 2014 2 155 15.2 6.52 12.50 G9III 084022.11+194011.9
08404+1940 SMR 30 AE 2017 5 156 15.6 6.52 12.50 G9III N 084022.11+194011.9
08404+1940 SMR 30 AE 2018 6 156 15.9 6.52 12.50 G9III N 084022.11+194011.9

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

 
 
WDS 08404+1940 SMR 30 AE : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08404+1940 SMR 30 AE : MEASURES
 
 
No records found.

 
 
WDS 08404+1940 : VIRTUAL EYEPIECE
 
 

08404+1940 STF1254A mag 6.44 Sp K0III 08404+1940 BOV 42B sep 20.5 P.A. 55.60 mag 9.5 Sp F2 08404+1940 BOV 42Bb sep 22.1 P.A. 53.20 mag 15.1 08404+1940 S 572C sep 63.3 P.A. 342.30 mag 7.61 Sp F2III 08404+1940 STF1254D sep 81.2 P.A. 42.60 mag 9.2 08404+1940 SMR 30E sep 15.7 P.A. 156.90 mag 12.5 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 08404+1940 : ALADIN DSS IMAGE @ 08h 40m 22.11s +19° 40' 11.9"
 
 
 
 
WDS 08404+1940 SMR 30 AE : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08404+1940 SMR 30AE distance=0' 08404+1940 BOV 42Ba,Bb distance=1' 08404+1940 S 572CD distance=2' 08401+1944 PAT 45 distance=6' 08408+1940 BOV 47 distance=7' 08403+1947 BOV 41 distance=8' 08405+1933 S 574AB (Meleph) distance=8' 08405+1933 CIA 28Aa,Ab (Meleph) distance=8' 08399+1933 BU 584AB distance=10' 08399+1933 S 571AD distance=10' 08399+1933 S 571AG distance=10' 08399+1933 GII 164Aa,Ab distance=10' 08397+1939 HZG 6 distance=10' 08399+1933 CHR 156Da,Db distance=11' 08399+1933 BKO 34DE distance=11' 08399+1933 BU 584DC distance=11' 08396+1926 BOV 39 distance=18' 08391+1941 S 570AB distance=18' 08391+1941 S 570AC distance=18' 08401+2000 CHR 28Ba,Bb distance=19' 08401+2000 BUP 120BR distance=19' 08403+1921 CHR 130 distance=20' 08401+2000 ENG 37AB distance=21' 08401+2000 ENG 37AC distance=21' 08401+2000 ENG 37AD distance=21' 08401+2000 SLE 685AR distance=21' 08401+2000 SLE 335AS distance=21' 08401+2000 PAT 44Ca,Cb distance=23' 08401+2000 SLE 335CS distance=23' 08418+1952 OCC 638Fa,Fb distance=25' 08404+2006 PAT 46CJ distance=27' 08397+2005 COU 47 distance=27' 08404+1913 BOV 43 distance=28' 08391+2000 OCC 637 distance=28' 08413+1916 KU 32 distance=28' 08422+1950 SLW 280 distance=29' 08404+1911 BOV 44 distance=30' 08400+2009 ARN 105AB distance=30' 08403+2012 BOV 40 distance=32' 08419+1915 SLE 337 distance=33' 08425+1924 BOV 50 distance=35' 08382+1922 BOV 35 distance=36' 08423+2002 COU 382 distance=36' 08393+2013 BOV 38 distance=37' 08419+2010 SLE 336AB distance=37' 08381+1959 BOV 34 distance=37' 08411+1904 BOV 48 distance=38' 08384+2006 BOV 36 distance=39' 08377+1946 STF1249 distance=39' 08405+2019 BOV 45 distance=39' 08377+1931 HJ 454AB distance=40' 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 08404+1940 STF1254 AB 55 20.8
Show 08404+1940 STF1254 AC 343 62.5
Show 08404+1940 STF1254 AD 44 83.5
Show 08404+1940 SMR 30 AE 156 15.9
Show 08404+1940 BOV 42 Ba,Bb 25 1.8 1
Show 08404+1940 S 572 CD 91 72.6 2
Show 08401+1944 PAT 45 208 0.9 6
Show 08408+1940 BOV 47 45 0.1 7
Show 08403+1947 BOV 41 69 0.1 8
Show Meleph 08405+1933 S 574 AB 250 134.0 8
Show Meleph 08405+1933 CIA 28 Aa,Ab 171 0.0 8
Show 08399+1933 BU 584 AB 290 0.9 10
Show 08399+1933 S 571 AD 242 92.1 10
Show 08399+1933 S 571 AG 158 45.7 10
Show 08399+1933 GII 164 Aa,Ab 101 0.2 10
Show 08397+1939 HZG 6 55 2.8 10
Show 08399+1933 CHR 156 Da,Db 241 0.6 11
Show 08399+1933 BKO 34 DE 3 35.4 11
Show 08399+1933 BU 584 DC 89 99.6 11
Show 08396+1926 BOV 39 352 1.1 18
Show 08391+1941 S 570 AB 84 57.3 18
Show 08391+1941 S 570 AC 345 178.6 18
Show 08401+2000 CHR 28 Ba,Bb 134 0.4 19
Show 08401+2000 BUP 120 BR 147 140.3 19
Show 08403+1921 CHR 130 160 0.1 20
Show 08401+2000 ENG 37 AB 150 151.8 21
Show 08401+2000 ENG 37 AC 309 134.0 21
Show 08401+2000 ENG 37 AD 111 134.9 21
Show 08401+2000 SLE 685 AR 150 290.3 21
Show 08401+2000 SLE 335 AS 325 261.7 21
Show 08401+2000 PAT 44 Ca,Cb 22 0.3 23
Show 08401+2000 SLE 335 CS 340 137.1 23
Show 08418+1952 OCC 638 Fa,Fb -1 0.0 25
Show 08404+2006 PAT 46 CJ 153 0.4 27
Show 08397+2005 COU 47 140 0.6 27
Show 08404+1913 BOV 43 205 0.5 28
Show 08391+2000 OCC 637 -1 0.0 28
Show 08413+1916 KU 32 165 2.2 28
Show 08422+1950 SLW 280 160 75.7 29
Show 08404+1911 BOV 44 192 2.5 30
Show 08400+2009 ARN 105 AB 153 91.2 30
Show 08403+2012 BOV 40 289 0.3 32
Show 08419+1915 SLE 337 348 22.8 33
Show 08425+1924 BOV 50 306 2.9 35
Show 08382+1922 BOV 35 27 0.2 36
Show 08423+2002 COU 382 348 0.3 36
Show 08393+2013 BOV 38 18 0.3 37
Show 08419+2010 SLE 336 AB 329 31.6 37
Show 08381+1959 BOV 34 74 0.2 37
Show 08411+1904 BOV 48 123 0.4 38
Show 08384+2006 BOV 36 97 1.0 39

 
 
WDS 08404+1940 : COMPONENTS
 
 
  A B Bb C D
B pa=55.6°
sep=20.54"
 
Bb pa=53.2°
sep=22.07"
pa=23.5°
sep=1.78"
 
C pa=342.3°
sep=63.29"
pa=323.4°
sep=60.65"
pa=321.9°
sep=59.79"
 
D pa=42.6°
sep=81.16"
pa=38.2°
sep=61.32"
pa=38.7°
sep=59.60"
pa=90.4°
sep=74.12"
 
E pa=156.9°
sep=15.72"
pa=202.5°
sep=28.19"
pa=202.5°
sep=29.97"
pa=161.2°
sep=78.94"
pa=213.3°
sep=88.79"
 
 
08404+1940 A
 
 
Name HD 73710 Coord arcsec 2000 084022.11+194011.9 Mag 6.44 Spectral class K0III (yellow-orange)
PmRA -36.00 PmDE -13.0 SAO 98021 HIP 42549
Tycho2 1395-02963-1 HD 73710 HR 3428 GC 11899
BD BD+20 2166
Tycho2
Tycho2 1395-02963-1 Pflag RAmdeg 130.09203008 DEmdeg 19.66993913
PmRA -35.3 PmDE -13.5 E RAmdeg 4 E DEmdeg 5
E pmRA 0.8 E pmDE 0.8 EpRAm 1991.41 EpDEm 1990.79
Num 18 Q RAmdeg 0.5 Q DEmdeg 0.8 Q pmRA 0.6
Q pmDE 0.9 BTmag 7.696 E BTmag 0.016 VTmag 6.523
E VTmag 0.010 Prox 633 TYC T HIP 42549
CCDM RAdeg 130.09211528 DEdeg 19.66997139 EpRA 1990 1.81
EpDE 1990 1.41 E RAdeg 3.9 E DEdeg 4.8 Posflg
Corr 0.3
SAO
SAO 98021 DelFlag RA1950 PmRA1950 -0.0024
DE1950 PmDE1950 -0.021 Vmag 6.4 SpType G5
Double code Source 70 CatNum 11899 DM BD+20 2166
DMcomp BDsup HD 73710 M HD 0
GC 11899 RA1950rad 2.25802095 DE1950rad 0.34641346 PmRA2000 -0.0025
PmDE2000 -0.017
Hipparcos
Catalog H HIP 42549 Proxy RAhms 08 40 22.11
DEdms +19 40 11.9 Vmag 6.42 VarFlag R Vmag H
RAdeg 130.092 DEdeg 19.67 AstroRef Plx 4.31
CCDM 08404+1941 N CCDM I Nsys 1 Ncomp 1
MultFlag Source Qual S M HIP
Theta Rho HD 73710 BD BD+20 2166
CD CP Dm number +20 2166 VIred 0.99
SpType K0III R SpType Coord arcsec 2000 084022.11+194011.9
Hipparcos 2
HIP 42549 Sn 5 So 0 Nc 1
RArad 2.2705358349 DErad 0.3433057482 Plx 4.58 PmRA -36.04
PmDE -12.9 E RArad 0.53 E DErad 0.31 E Plx 0.57
E pmRA 0.58 E pmDE 0.45 Hpmag 6.5891 E Hpmag 0.0011
SHp 0.008 VA 0 BV 1.02 E BV 0
VI 0.99
 
 
08404+1940 B
 
 
Coord arcsec 2000 084023.31+194023.5 Coord calc 084023.24+194023.9 Mag 9.5 Mag composta 10.37
Spectral class F2 (yellow-white) PmRA -36.00 PmDE -14.0 Calc delta mag 3.06
 
 
08404+1940 Bb
 
 
Coord arcsec 2000 084023.36+194025.1 Mag 15.1 Calc delta mag 8.66 Calc coord yes
 
 
08404+1940 C
 
 
Coord arcsec 2000 084020.75+194112.2 Coord calc 084020.75+194112.2 Mag 7.61 Spectral class F2III (yellow-white)
PmRA -38.00 PmDE -13.0 SAO 98020 Tycho2 1395-02006-1
HD 73709 DM BD+20 2165 Calc delta mag 1.17
Tycho2
Tycho2 1395-02006-1 Pflag RAmdeg 130.08644850 DEmdeg 19.68673524
PmRA -36.9 PmDE -11.9 E RAmdeg 5 E DEmdeg 6
E pmRA 1.1 E pmDE 1.0 EpRAm 1991.36 EpDEm 1990.68
Num 11 Q RAmdeg 1.4 Q DEmdeg 1.5 Q pmRA 1.5
Q pmDE 1.6 BTmag 7.875 E BTmag 0.016 VTmag 7.609
E VTmag 0.012 Prox 633 TYC T HIP
CCDM RAdeg 130.08653722 DEdeg 19.68676389 EpRA 1990 1.80
EpDE 1990 1.34 E RAdeg 5.0 E DEdeg 6.1 Posflg
Corr 0.2
SAO
SAO 98020 DelFlag RA1950 PmRA1950 -0.0023
DE1950 PmDE1950 -0.026 Vmag 8.3 SpType A0
Double code Source 35 CatNum 3489 DM BD+20 2165
DMcomp BDsup HD 73709 M HD 0
GC RA1950rad 2.25792271 DE1950rad 0.34670424 PmRA2000 -0.0024
PmDE2000 -0.022
 
 
08404+1940 D
 
 
Coord arcsec 2000 084026.00+194111.7 Mag 9.2 PmRA -38.00 PmDE -12.0
Tycho2 1395-01999-1 Calc delta mag 2.76 Calc coord yes
Tycho2
Tycho2 1395-01999-1 Pflag RAmdeg 130.10889823 DEmdeg 19.68648817
PmRA -36.7 PmDE -12.2 E RAmdeg 13 E DEmdeg 15
E pmRA 1.0 E pmDE 0.9 EpRAm 1988.26 EpDEm 1987.07
Num 9 Q RAmdeg 1.8 Q DEmdeg 2.1 Q pmRA 1.8
Q pmDE 2.2 BTmag 9.680 E BTmag 0.027 VTmag 9.199
E VTmag 0.023 Prox 761 TYC T HIP
CCDM RAdeg 130.10898361 DEdeg 19.68652250 EpRA 1990 1.76
EpDE 1990 1.45 E RAdeg 14.0 E DEdeg 15.8 Posflg
Corr 0.3
 
 
08404+1940 E
 
 
Coord arcsec 2000 084022.55+193957.4 Mag 12.5 PmRA -37.00 PmDE -12.0
Calc delta mag 6.06 Calc coord yes