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Current system
21206+5241
MLR 644


Nearby doubles
18' : 21195+5256
A 1693

19' : 21200+5259
STF2789AB

21' : 21185+5248
TDT2894

24' : 21194+5219
ES 98AB

25' : 21197+5303
S 786

26' : 21196+5216
HEI 593

27' : 21233+5249
TOI1361

28' : 21178+5229
SKF 346

29' : 21224+5218
ES 2708

32' : 21182+5217
HEI 592

34' : 21227+5214
HU 591

35' : 21241+5227
ES 1006

40' : 21199+5319
A 1695

43' : 21211+5323
ES 139

44' : 21251+5229
HU 592

45' : 21254+5235
CVR 243

51' : 21238+5322
KPP 810

52' : 21199+5150
STJ 116

54' : 21265+5245
BU 369AB

56' : 21259+5214
CVR 244

57' : 21211+5337
CVR 240

64' : 21170+5146
DBR 293

69' : 21178+5344
TDT2891

71' : 21223+5132
CVR 241

74' : 21203+5354
TDT2910

77' : 21280+5317
HDS3055



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.

21206+5241 MLR 644

 
 
21h 20m 34.78s +52° 40' 37.2" P.A. 211.00 sep 1.6 mag 9.76,11.48 Sp F2
 
 
Coord 2000 21206+5241 Discov num MLR 644 Comp Coord arcsec 2000 21 20 34.78 +52 40 37.2
Date first 1982 Date last 2017 Obs 6
Pa first 211 Pa last 211.4 P.A. Now (θ) 211.4°
Sep first 1.3 Sep last 1.6 Sep. Now (ρ) 1.6"
Mag pri 9.76 Mag sec 11.48 delta mag (ΔM) 1.72 Spectral class F2 (yellow-white)
Pri motion ra -018 Sec motion ra -018
Pri motion dec -003 Sec motion dec -003
Notes
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3966-01117-1 Gaia DR2 2175423823310717696
 
 
WDS 21206+5241 MLR 644 : 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
21206+5241 MLR 644 1991 3 208 1.6 9.76 11.48 F2 212034.78+524037.2
21206+5241 MLR 644 2015 4 209 1.6 9.76 11.48 F2 212034.78+524037.2
21206+5241 MLR 644 2017 5 211 1.6 9.76 11.48 F2 212034.78+524037.2

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

 
 
WDS 21206+5241 MLR 644 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21206+5241 MLR 644 : MEASURES
 
 
No records found.

 
 
WDS 21206+5241 : VIRTUAL EYEPIECE
 
 

21206+5241 MLR 644A mag 9.76 Sp F2 21206+5241 MLR 644B sep 1.5 P.A. 200.30 mag 11.48 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 21206+5241 : ALADIN DSS IMAGE @ 21h 20m 34.78s +52° 40' 37.2"
 
 
 
 
WDS 21206+5241 MLR 644 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21206+5241 MLR 644 distance=0' 21195+5256 A 1693 distance=18' 21200+5259 STF2789AB distance=19' 21200+5259 STF2789AC distance=19' 21185+5248 TDT2894 distance=21' 21194+5219 ES 98CD distance=24' 21194+5219 ES 98BC distance=24' 21194+5219 ES 98AB distance=24' 21194+5219 ES 98AC distance=24' 21197+5303 S 786 distance=25' 21196+5216 HEI 593 distance=26' 21233+5249 TOI1361 distance=27' 21178+5229 SKF 346 distance=28' 21224+5218 ES 2708 distance=29' 21182+5217 HEI 592 distance=32' 21227+5214 HU 591 distance=34' 21241+5227 ES 1006 distance=35' 21199+5319 A 1695 distance=40' 21211+5323 ES 139 distance=43' 21251+5229 HU 592 distance=44' 21254+5235 CVR 243 distance=45' 21238+5322 KPP 810 distance=51' 21199+5150 STJ 116 distance=52' 21265+5245 BU 369AB distance=54' 21265+5245 BU 369AC distance=54' 21265+5245 BU 369AD distance=54' 21259+5214 CVR 244 distance=56' 21211+5337 CVR 240 distance=57' 21170+5146 DBR 293 distance=64' 21178+5344 TDT2891 distance=69' 21223+5132 CVR 241 distance=71' 21203+5354 TDT2910 distance=74' 21280+5317 HDS3055 distance=77' 21271+5151 CVR 246 distance=78' 21125+5318 ES 209 distance=82' 21147+5345 FMR 234 distance=84' 21152+5351 BVD 134AB distance=85' 21299+5256 STF2803AB distance=86' 21299+5256 GUI 35AC distance=86' 21202+5411 HDS3036 distance=91' 21189+5413 FAB 17 distance=94' 21152+5117 HJ 1631 distance=98' 21315+5237 ARY 88AB distance=100' 21315+5237 ARY 88AC distance=100' 21315+5237 ARY 88AD distance=100' 21252+5110 CBL 92 distance=101' 21254+5108 SKF2530 distance=103' 21297+5139 KPP 690BC distance=105' 21092+5220 COU2694 distance=107' 21323+5245 A 1698BC distance=107' 21323+5245 A 1698BD distance=107' 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 21206+5241 MLR 644 211 1.6
Show 21195+5256 A 1693 74 2.8 18
Show 21200+5259 STF2789 AB 113 6.9 19
Show 21200+5259 STF2789 AC 171 133.1 19
Show 21185+5248 TDT2894 187 2.4 21
Show 21194+5219 ES 98 CD 259 7.6 24
Show 21194+5219 ES 98 BC 107 51.9 24
Show 21194+5219 ES 98 AB 308 25.9 24
Show 21194+5219 ES 98 AC 87 29.8 24
Show 21197+5303 S 786 298 47.9 25
Show 21196+5216 HEI 593 335 1.8 26
Show 21233+5249 TOI1361 142 8.2 27
Show 21178+5229 SKF 346 305 55.9 28
Show 21224+5218 ES 2708 40 29.9 29
Show 21182+5217 HEI 592 70 4.1 32
Show 21227+5214 HU 591 130 0.8 34
Show 21241+5227 ES 1006 48 8.2 35
Show 21199+5319 A 1695 193 0.5 40
Show 21211+5323 ES 139 352 5.7 43
Show 21251+5229 HU 592 325 0.8 44
Show 21254+5235 CVR 243 319 113.1 45
Show 21238+5322 KPP 810 76 7.0 51
Show 21199+5150 STJ 116 53 1.4 52
Show 21265+5245 BU 369 AB 31 16.0 54
Show 21265+5245 BU 369 AC 61 49.3 54
Show 21265+5245 BU 369 AD 331 25.8 54
Show 21259+5214 CVR 244 112 54.4 56
Show 21211+5337 CVR 240 21 64.4 57
Show 21170+5146 DBR 293 199 5.5 64
Show 21178+5344 TDT2891 201 0.5 69
Show 21223+5132 CVR 241 156 75.0 71
Show 21203+5354 TDT2910 287 0.7 74
Show 21280+5317 HDS3055 35 0.4 77
Show 21271+5151 CVR 246 53 69.8 78
Show 21125+5318 ES 209 239 4.1 82
Show 21147+5345 FMR 234 293 2.5 84
Show 21152+5351 BVD 134 AB 57 22.9 85
Show 21299+5256 STF2803 AB 285 25.9 86
Show 21299+5256 GUI 35 AC 2 87.6 86
Show 21202+5411 HDS3036 165 0.4 91
Show 21189+5413 FAB 17 313 8.1 94
Show 21152+5117 HJ 1631 16 49.4 98
Show 21315+5237 ARY 88 AB 11 46.3 100
Show 21315+5237 ARY 88 AC 110 88.7 100
Show 21315+5237 ARY 88 AD 56 95.0 100
Show 21252+5110 CBL 92 342 9.1 101
Show 21254+5108 SKF2530 101 8.1 103
Show 21297+5139 KPP 690 BC 117 6.2 105
Show 21092+5220 COU2694 249 1.1 107
Show 21323+5245 A 1698 BC 4.0 107
Show 21323+5245 A 1698 BD 234 8.6 107

 
 
WDS 21206+5241 : COMPONENTS
 
 
  A
B pa=200.3°
sep=1.46"
 
 
21206+5241 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 212034.78+524037.2 Mag 9.76 Spectral class F2 (yellow-white)
PmRA -18.00 PmDE -3.0 Tycho2 3966-01117-1
Tycho2
Tycho2 3966-01117-1 Pflag RAmdeg 320.14492226 DEmdeg 52.67700235
PmRA -18.3 PmDE -3.3 E RAmdeg 13 E DEmdeg 16
E pmRA 1.5 E pmDE 1.5 EpRAm 1990.87 EpDEm 1990.36
Num 4 Q RAmdeg 0.5 Q DEmdeg 1.8 Q pmRA 0.5
Q pmDE 1.9 BTmag 10.180 E BTmag 0.026 VTmag 9.726
E VTmag 0.023 Prox 999 TYC T HIP
CCDM RAdeg 320.14499167 DEdeg 52.67701000 EpRA 1990 1.72
EpDE 1990 1.59 E RAdeg 12.9 E DEdeg 15.8 Posflg
Corr 0.0
 
 
21206+5241 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212034.72+524035.8 Mag 11.48 PmRA -18.00
PmDE -3.0 Calc delta mag 1.72 Calc coord yes