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Current system
20509+5918
MLR 240
HD 198914


Nearby doubles
21' : 20503+5937
MLR 239

22' : 20537+5918
A 751

35' : 20493+5845
STTA211

41' : 20559+5906
A 754

44' : 20454+5906
ES 2700

47' : 20466+5951
MLR 236

49' : 20563+5943
LDS2794

52' : 20444+5902
KR 51

60' : 20577+5849
A 756AB

61' : 20470+5825
HDS2961

66' : 20483+5815
MLR 360

66' : 20520+6022
SKF2091

69' : 20590+5948
TDT2672

70' : 20525+6026
DAM1044

78' : 21010+5923
MLR 242

78' : 20475+6031
TDT2541

78' : 21009+5929
MLR 241

78' : 21009+5931
ES 2703

82' : 20520+6039
STI1001

82' : 20406+5858
HJ 1569

85' : 20400+5933
RAO 440

87' : 21012+5953
TDT2696

87' : 20413+6006
KPP2292

88' : 20500+5751
CVR 232

89' : 21024+5920
STI1011

91' : 20398+5844
MLB 85



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.

20509+5918 MLR 240 (HD 198914)

 
 
20h 50m 51.54s +59° 17' 38.8" P.A. 22.00 sep 0.2 mag 9.30,9.50 Sp A0
 
 
Coord 2000 20509+5918 Discov num MLR 240 Comp Coord arcsec 2000 20 50 51.54 +59 17 38.8
Date first 1971 Date last 2008 Obs 12
Pa first 58 Pa last 22.3 P.A. Now (θ) 22.3°
Sep first 0.2 Sep last 0.244 Sep. Now (ρ) 0.244"
Mag pri 9.30 Mag sec 9.50 delta mag (ΔM) 0.2 Spectral class A0 (white)
Pri motion ra +004 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 198914 Constellation Cepheus SAO 32935 Tycho2 3963-00320-1
Gaia DR2 2193836657345573504 HD 198914 GC 29100
 
 
WDS 20509+5918 MLR 240 (HD 198914) : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Mlr1938 Ma - Muller, P. 1938JO.....21..113M
Mlr1938 +Mc J. Obs. 21, 113, 1938
Mlr1939 - Muller, P. 1939JO.....22..181M
Mlr1939 J. Obs. 22, 181, 1939 (all data published elsewhere)
Mlr1946a Ma - Muller, P. 1946JO.....29...69M
Mlr1946a +Mc J. Obs. 29, 69, 1946
Mlr1946b Mc - Muller, P. (measure by Danjon, A.) 1946JO.....29...69M
Mlr1946b J. Obs. 29, 69, 1946
Mlr1947 Ma - Muller, P. 1947JO.....30..104M
Mlr1947 +Mc J. Obs. 30, 104, 1947
Mlr1948 Md - Muller, P. 1948AnStr...5....1M
Mlr1948 Ann. Obs. Strasbourg 5, pt. 1, 1948
Mlr1948 (Visual measures with double-image micrometer and 16cm refractor. No dates given
Mlr1948 for measures; default date = decade of publication added.)
Mlr1949a Md - Muller, P. 1949AnStr...5....2M
Mlr1949a Ann. Obs. Strasbourg 5, pt. 2, 1949
Mlr1949a (Visual measures with double-image micrometer and 49cm refractor. No dates given
Mlr1949a for measures; default date = decade of publication added.)
Mlr1949b Mc - Muller, P. 1949JO.....32...77M
Mlr1949b J. Obs. 32, 77, 1949
Mlr1949c orb - Muller, P. 1949JO.....32...34M
Mlr1949c J. Obs. 32, 34, 1949
Mlr1950a Mc - Muller, P. 1950JO.....33...93M
Mlr1950a J. Obs. 33, 93, 1950
Mlr1950b Mc - Muller, P. 1950JO.....33..105M
Mlr1950b J. Obs. 33, 105, 1950
Mlr1951a Mc - Muller, P. 1951JO.....34...81M
Mlr1951a J. Obs. 34, 81, 1951
Mlr1951b Md - Muller, P. 1951AnStr...5....3M
Mlr1951b Ann. Obs. Strasbourg 5, pt. 3, 1951
Mlr1951b (Visual measures with double-image micrometer and 16cm refractor. No dates given
Mlr1951b for measures; default date = decade of publication added.)
Mlr1951c Md - Muller, P. 1951AnStr...5....3M
Mlr1951c Ann. Obs. Strasbourg 5, pt. 3, 1951
Mlr1951c (Visual measures with double-image micrometer on 23 and 60cm refractors at
Mlr1951c Pic-du-Midi. See Mlr1950b. No dates listed; default date = decade of publication.)
Mlr1952a Mc - Muller, P. 1952JO.....35...95M
Mlr1952a J. Obs. 35, 95, 1952
Mlr1952b orb - Muller, P. .
Mlr1952b Bull. Astron. Paris 16, 203-212, 1952
Mlr1952c Md - Muller, P. 1952AnStr...5....4M
Mlr1952c Ann. Obs. Strasbourg 5, pt. 4, 1952
Mlr1952c (Visual measures with double-image micrometer and various filters on 16 and 49 cm
Mlr1952c refractors at Strasbourg and 60cm at Pic-du-Midi. Measures listed as "III" are
Mlr1952c tabulated. Some of these measures are incorporated in earlier MLR lists. No dates
Mlr1952c listed; default date = decade of publication.)
Mlr1952d orb - Muller, P. .
Mlr1952d Bull. Astron. Paris 16, 263-275, 1952
Mlr1952e orb - Muller, P. .
Mlr1952e Bull. Astron. Paris 16, 277-282, 1952
Mlr1952f - Muller, P. 1952POHP....2...49M
Mlr1952f Pub. Obs. Haute Provence 2, #49, 1952
Mlr1952g Md - Muller, P. 1952JO.....35..177M
Mlr1952g +Mc J. Obs. 35, 177, 1952
Mlr1953a - Muller, P. 1953JO.....36..104M
Mlr1953a J. Obs. 36, 104, 1953
Mlr1953b Mc - Muller, P. 1953JO.....36..130M
Mlr1953b J. Obs. 36, 130, 1953
Mlr1954a Mc - Muller, P. 1954AJ.....59..388M
Mlr1954a +orb AJ 59, 388, 1954
Mlr1954b orb - Muller, P. 1954JO.....37...61M
Mlr1954b J. Obs. 37, 61-72, 1954
Mlr1954c Mc - Muller, P. 1954JO.....37..125M
Mlr1954c J. Obs. 37, 125, 1954
Mlr1954d - Muller, P. 1954JO.....37..169M
Mlr1954d J. Obs. 37, 169, 1954
Mlr1955a orb - Muller, P. 1955JO.....38...17M
Mlr1955a J. Obs. 38, 17-26, 1955
Mlr1955b orb - Muller, P. 1955JO.....38...58M
Mlr1955b J. Obs. 38, 58-64, 1955
Mlr1955c Mc - Muller, P. 1955JO.....38..221M
Mlr1955c J. Obs. 38, 221, 1955
Mlr1956a Mc - Muller, P. 1956JO.....39..127M
Mlr1956a J. Obs. 39, 127, 1956
Mlr1956b orb - Muller, P. 1956AnStr...5...29M
Mlr1956b Ann. Obs. Strasbourg 5 pt. 29, 1956
Mlr1956c orb - Muller, P. .
Mlr1956c Bull. Astron. Paris 20, 145, 1956
Mlr1956d Mc - Muller, P. 1956JO.....39..181M
Mlr1956d J. Obs. 39, 183, 1956
Mlr1957a orb - Muller, P. .
Mlr1957a Bull. Astron. Paris 21, 131, 1957
Mlr1957b orb - Muller, P. 1957JO.....40...48M
Mlr1957b J. Obs. 40, 48, 1957
Mlr1957c Mc - Muller, P. 1958JO.....40..157M
Mlr1957c J. Obs. 40, 157, 1957
Mlr1958 Mc - Muller, P. 1958JO.....41..109M
Mlr1958 J. Obs. 41, 109, 1958
Mlr1959 Mc - Muller, P. 1959JO.....42...85M
Mlr1959 J. Obs. 42, 85, 1959
Mlr1963 orb - Muller, P. .
Mlr1963 Bull. Astron. Paris 24, 1, 1963
Mlr1966a Mc - Muller, P. 1966JO.....49..335M
Mlr1966a J. Obs. 49, 335, 1966
Mlr1966b orb - Muller, P. 1966IAUDS..39....1M
Mlr1966b Inf. Circ. 39, 1, 1966
Mlr1970 Ma - Muller, P. 1970A&AS....1..399M
Mlr1970 A&AS 1, 399, 1970
Mlr1973a Ma - Muller, P. .
Mlr1973a +Mc Pub. Obs. Paris, June 1973
Mlr1973b orb - Muller, P. 1973IAUDS..59....1M
Mlr1973b Inf. Circ. 59, 1, 1973
Mlr1973c Ma - Muller, P. 1973IAUDS..60....1M
Mlr1973c Inf. Circ. 60, 1, 1973
Mlr1973d Ma - Muller, P. 1973IAUDS..61R...1M
Mlr1973d Inf. Circ. 61, 1, 1973
Mlr1974b Ma - Muller, P. 1974IAUDS..62....1M
Mlr1974b Inf. Circ. 62, 1, 1974
Mlr1974 orb - Muller, P. 1974A&AS...13...99M
Mlr1974 A&AS 13, 99, 1974
Mlr1975a Ma - Muller, P. 1975IAUDS..64....1M
Mlr1975a Inf. Circ. 64, 1, 1975
Mlr1975b Ma - Muller, P. 1975IAUDS..67....1M
Mlr1975b Inf. Circ. 67, 1, 1975
Mlr1976b Ma - Muller, P. 1976IAUDS..70....1M
Mlr1976b Inf. Circ. 70, 1, 1976
Mlr1976 Mc - Muller, P. 1976A&AS...23..205M
Mlr1976 A&AS 23, 205, 1976
Mlr1978a orb - Muller, P. 1978A&AS...32..173M
Mlr1978a A&AS 32, 173, 1978
Mlr1978b Ma - Muller, P. 1978A&AS...33..275M
Mlr1978b A&AS 33, 275, 1978
Mlr1980a Ma - Muller, P. 1980IAUDS..81....1M
Mlr1980a Inf. Circ. 81, 1, 1980
Mlr1980b Ma - Muller, P. 1980IAUDS..82....1M
Mlr1980b Inf. Circ. 82, 1, 1980
Mlr1981 Ma - Muller, P. 1981IAUDS..85....1M
Mlr1981 Inf. Circ. 85, 1, 1981
Mlr1982 Ma - Muller, P. 1982IAUDS..88....1M
Mlr1982 Inf. Circ. 88, 1, 1982
Mlr1983 Ma - Muller, P. 1983IAUDS..90....1M
Mlr1983 Inf. Circ. 90, 1, 1983
Mlr1984 Ma j Muller, P. 1984A&AS...57..467M
Mlr1984 A&AS 57, 467, 1984
Mlr1986 Ma - Muller, P. 1986IAUDS..98....1M
Mlr1986 Inf. Circ. 98, 1, 1986
Mlr1987A Ma - Muller, P. 1987A&A....70..193C
Mlr1987A cited by Couteau (A&A 70, 193, 1987)
Mlr1990 Ma j Muller, P. 1990A&AS...84..619M
Mlr1990 A&AS 84, 619, 1990
Mlr1991b orb - Muller, P. 1991O&T....28...12M
Mlr1991b Obs. et Travaux 28, 12, 1991
Mlr1991 orb - Muller, P. 1991IAUDS.115....1M
Mlr1991 Inf. Circ. 115, 1, 1991
Mlr1993 Ma j Muller, P. 1993A&AS..102..643M
Mlr1993 A&AS 102, 643, 1993
Mlr1993b - Muller, P. 1993O&T....33....9M
Mlr1993b Obs. et Travaux 33, 9, 1993
Mlr1997 Ma - Muller, P. 1997A&AS..126..273M
Mlr1997 A&AS 126, 273, 1997
Mlr2006 Ma - Muller, P. (article by P. Durand & C. Pinlou) 2006O&T....64...16D
Mlr2006 Obs. et Travaux 64, 16, 2006
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20509+5918 MLR 240 1995 11 13 0.2 9.30 9.50 A0 205051.54+591738.8
20509+5918 MLR 240 2008 12 22 0.2 9.30 9.50 A0 205051.54+591738.8

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

 
 
WDS 20509+5918 MLR 240 (HD 198914) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20509+5918 MLR 240 (HD 198914) : MEASURES
 
 
No records found.

 
 
WDS 20509+5918 (HD 198914) : VIRTUAL EYEPIECE
 
 

20509+5918 MLR 240A mag 9.3 Sp A0 20509+5918 MLR 240B sep 0.2 P.A. 11.80 mag 9.5 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 20509+5918 (HD 198914) : ALADIN DSS IMAGE @ 20h 50m 51.54s +59° 17' 38.8"
 
 
 
 
WDS 20509+5918 MLR 240 (HD 198914) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20509+5918 MLR 240 distance=0' 20503+5937 MLR 239 distance=21' 20537+5918 A 751 distance=22' 20493+5845 STTA211 distance=35' 20559+5906 A 754 distance=41' 20454+5906 ES 2700 distance=44' 20466+5951 MLR 236 distance=47' 20563+5943 LDS2794 distance=49' 20444+5902 KR 51 distance=52' 20577+5849 YSC 117Da,Db distance=57' 20577+5849 A 756AB distance=60' 20577+5849 A 756AC distance=60' 20577+5849 ARN 34AD distance=60' 20470+5825 HDS2961 distance=61' 20483+5815 MLR 360 distance=66' 20520+6022 SKF2091 distance=66' 20590+5948 TDT2672 distance=69' 20525+6026 DAM1044 distance=70' 21010+5923 MLR 242 distance=78' 20475+6031 TDT2541 distance=78' 21009+5929 MLR 241 distance=78' 21009+5931 ES 2703 distance=78' 20520+6039 STI1001 distance=82' 20406+5858 HJ 1569 distance=82' 20400+5933 RAO 440 distance=85' 21012+5953 TDT2696 distance=87' 20413+6006 KPP2292 distance=87' 20500+5751 CVR 232 distance=88' 21024+5920 STI1011 distance=89' 20398+5844 MLB 85 distance=91' 20562+5742 HJ 1595 distance=97' 21035+5922 MRI 37 distance=97' 21035+5925 MLR 243 distance=98' 20538+5739 OSW 76 distance=102' 21045+5904 MLB1090 distance=106' 20403+6030 TOK 679 distance=108' 20464+6102 MLB 141 distance=109' 20389+5820 TDT2449 distance=110' 20495+5728 MLB 86 distance=111' 20454+5735 CIA 1Aa,Ab distance=112' 20454+5735 ENG 76AB distance=112' 21047+5831 HDS3002 distance=117' 21063+5924 CLZ 79 distance=119' 20354+5956 SHN 246 distance=124' 21070+5900 STF2766 distance=126' 20521+6127 HU 762 distance=130' 20540+5711 ES 135AB distance=130' 20540+5711 ES 135AC distance=130' 20369+6034 MLR 505 distance=130' 20416+5730 LDS1476AB distance=131' 20416+5730 OSO 130AC distance=131' 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 20509+5918 MLR 240 22 0.2
Show 20503+5937 MLR 239 286 0.9 21
Show 20537+5918 A 751 52 0.2 22
Show 20493+5845 STTA211 268 94.9 35
Show 20559+5906 A 754 6 1.0 41
Show 20454+5906 ES 2700 297 15.5 44
Show 20466+5951 MLR 236 41 1.6 47
Show 20563+5943 LDS2794 120 85.6 49
Show 20444+5902 KR 51 181 1.4 52
Show 20577+5849 YSC 117 Da,Db 341 0.1 57
Show 20577+5849 A 756 AB 210 0.6 60
Show 20577+5849 A 756 AC 197 54.0 60
Show 20577+5849 ARN 34 AD 265 215.4 60
Show 20470+5825 HDS2961 39 0.1 61
Show 20483+5815 MLR 360 295 0.2 66
Show 20520+6022 SKF2091 292 45.4 66
Show 20590+5948 TDT2672 258 3.0 69
Show 20525+6026 DAM1044 45 6.8 70
Show 21010+5923 MLR 242 287 3.9 78
Show 20475+6031 TDT2541 286 0.6 78
Show 21009+5929 MLR 241 174 0.9 78
Show 21009+5931 ES 2703 230 10.2 78
Show 20520+6039 STI1001 223 7.1 82
Show 20406+5858 HJ 1569 306 3.9 82
Show 20400+5933 RAO 440 123 3.1 85
Show 21012+5953 TDT2696 246 0.5 87
Show 20413+6006 KPP2292 68 19.3 87
Show 20500+5751 CVR 232 319 112.1 88
Show 21024+5920 STI1011 34 15.2 89
Show 20398+5844 MLB 85 134 6.2 91
Show 20562+5742 HJ 1595 313 11.6 97
Show 21035+5922 MRI 37 175 6.0 97
Show 21035+5925 MLR 243 224 0.2 98
Show 20538+5739 OSW 76 326 145.5 102
Show 21045+5904 MLB1090 34 9.5 106
Show 20403+6030 TOK 679 63 23.9 108
Show 20464+6102 MLB 141 283 3.7 109
Show 20389+5820 TDT2449 91 0.7 110
Show 20495+5728 MLB 86 149 4.6 111
Show 20454+5735 CIA 1 Aa,Ab 105 0.1 112
Show 20454+5735 ENG 76 AB 146 48.4 112
Show 21047+5831 HDS3002 327 0.2 117
Show 21063+5924 CLZ 79 332 120.3 119
Show 20354+5956 SHN 246 -1 0.4 124
Show 21070+5900 STF2766 247 4.5 126
Show 20521+6127 HU 762 178 1.6 130
Show 20540+5711 ES 135 AB 199 7.1 130
Show 20540+5711 ES 135 AC 115 71.7 130
Show 20369+6034 MLR 505 138 0.5 130
Show 20416+5730 LDS1476 AB 267 11.6 131
Show 20416+5730 OSO 130 AC 233 23.6 131

 
 
WDS 20509+5918 : COMPONENTS
 
 
  A
B pa=11.8°
sep=0.23"
 
 
20509+5918 A
 
 
Componente originario normalizzato AB Name HD 198914 Coord arcsec 2000 205051.54+591738.8 Mag 9.3
Spectral class A0 (white) PmRA 4.00 PmDE -9.0 SAO 32935
Tycho2 3963-00320-1 HD 198914 GC 29100 DM BD+58 2180
Tycho2
Tycho2 3963-00320-1 Pflag RAmdeg 312.71476588 DEmdeg 59.29412208
PmRA 5.0 PmDE -0.3 E RAmdeg 7 E DEmdeg 8
E pmRA 1.3 E pmDE 1.4 EpRAm 1991.06 EpDEm 1990.99
Num 11 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.1
Q pmDE 1.2 BTmag 8.940 E BTmag 0.017 VTmag 8.736
E VTmag 0.014 Prox 999 TYC T HIP
CCDM RAdeg 312.71474361 DEdeg 59.29412306 EpRA 1990 1.62
EpDE 1990 1.69 E RAdeg 7.1 E DEdeg 7.7 Posflg
Corr -0.1
SAO
SAO 32935 DelFlag RA1950 PmRA1950 -0.002
DE1950 PmDE1950 0.014 Vmag 8.8 SpType A0
Double code Source 70 CatNum 29100 DM BD+58 2180
DMcomp BDsup HD 198914 M HD 0
GC 29100 RA1950rad 5.45271154 DE1950rad 1.03159517 PmRA2000 -0.0016
PmDE2000 0.011
CCDM
Ccdm 20509+5918 RComp Comp A Note1
Note2 Discov num DRAs -2.53 DDEs -21.3
R dRAs 10 Year Theta Rho
Obs 2 Vmag 9.3 Sp A0 PmNote *
PmRA -9 PmDE -3 Dm number +58 2180 Cat1 BD
Name2 +59 1387 Cat2 AGK2/3 HD 198914 M HD
ADS BDS M ADS BDS N IDS IDS 20485N5855A
HIC
 
 
20509+5918 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 205051.55+591739.0 Mag 9.5 Calc delta mag 0.2
Calc coord yes
CCDM
Ccdm 20509+5918 RComp Comp B Note1
Note2 Discov num MLR 240 DRAs DDEs
R dRAs Year 1971 Theta 58 Rho 0.2
Obs 1 Vmag 9.5 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS IDS 20485N5855B
HIC