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Doubles in session


Current system
20302+0321
DOO 87


Nearby doubles
14' : 20307+0311
BAL2029

15' : 20294+0330
HJ 2970

16' : 20291+0325
HJ 2968

36' : 20321+0330
J 2573

37' : 20278+0311
HJ 917

38' : 20286+0351
HJ 2967

41' : 20309+0400
BAL2538

41' : 20283+0351
BAL2533

42' : 20274+0317
BAL2025

42' : 20321+0251
BAL2030

56' : 20298+0227
BAL2027

58' : 20306+0224
BAL2028

66' : 20341+0256
BAL2031

69' : 20347+0321
CRC 38

70' : 20257+0304
BAL2024

72' : 20310+0211
J 561

73' : 20324+0426
A 2281

81' : 20253+0355
UC 4175

83' : 20247+0302
J 1342

84' : 20311+0444
UC 4205

86' : 20285+0443
J 3220

86' : 20315+0444
BAL2966

86' : 20302+0156
BAL1562

88' : 20353+0239
HJ 2981

90' : 20251+0233
BAL2023

91' : 20330+0201
TDT2361



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.

20302+0321 DOO 87

 
 
20h 30m 10.08s +03° 21' 27.8" P.A. 33.00 sep 11.9 mag 11.61,12.12
 
 
Coord 2000 20302+0321 Discov num DOO  87 Comp Coord arcsec 2000 20 30 10.08 +03 21 27.8
Date first 1909 Date last 2015 Obs 14
Pa first 28 Pa last 33.3 P.A. Now (θ) 33.3°
Sep first 8.2 Sep last 11.87 Sep. Now (ρ) 11.87"
Mag pri 11.61 Mag sec 12.12 delta mag (ΔM) 0.51 Spectral class
Pri motion ra -015 Sec motion ra +019
Pri motion dec -004 Sec motion dec +022
Notes U (Proper motion indicates non-physical)
rPM=1.472
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus Tycho2 0514-02356-1 Gaia DR2 4244820018064325632 ADS 13917
 
 
WDS 20302+0321 DOO 87 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Doo1901 Ma j Doolittle, E. 1901PFAO....1c...1D
Doo1901 Pub. Univ. Penn. 1, Pt. 3, 1901
Doo1903a Ma - Doolittle, E. 1903AJ.....23..175D
Doo1903a AJ 23, 175, 1903 (also in Pub. Univ. Penn. 2, Pt. 3, 1905)
Doo1903b Ma j Doolittle, E. 1903AJ.....23..177D
Doo1903b AJ 23, 177, 1903 (also in Pub. Univ. Penn. 2, Pt. 3, 1905)
Doo1905a Ma j Doolittle, E. 1905PFAO....2c...1D
Doo1905a Pub. Univ. Penn. 2, Pt. 3, 1905
Doo1905b Ma - Doolittle, E. (measure by Hadley, J.M.) 1905PFAO....2c...1D
Doo1905b Pub. Univ. Penn. 2, Pt. 3, 1905
Doo1906A Ma - Doolittle, E. 1906MmRAS..56....1L
Doo1906A +orb cited by Lewis (MemRAS 56, 1, 1906)
Doo1906B Ma - Doolittle, E. 1906QB821.B972.....
Doo1906B cited in BDS (Burnham Double Star Cat., 1906)
Doo1907 Ma j Doolittle, E. 1907PFAO....3c...1D
Doo1907 Pub. Univ. Penn. 3, Pt. 3, 1907
Doo1912 Ma j Doolittle, E. 1912PFAO....4a...1D
Doo1912 Pub. Univ. Penn. 4, Pt. 1, 1912
Doo1913A Ma - Doolittle, E. 1913QB811.B8.......
Doo1913A cited by Burnham (Carnegie Inst. Wash. #168, 1913)
Doo1915a Ma - Doolittle, E. 1915MNRAS..75..666D
Doo1915a MNRAS 75, 666, 1915
Doo1915b Ma - Doolittle, E. 1915PFAO....4a...1D
Doo1915b Pub. Univ. Penn. 4, Pt. 1, 1915
Doo1915c Ma - Doolittle, E. 1915AJ.....29...49D
Doo1915c AJ 29, 49, 1915
Doo1923 Ma j Doolittle, E. 1923PFAO....4b...1D
Doo1923 Pub. Univ. Penn. 4, Pt. 2, 1923
Doo1932A Ma - Doolittle, E. 1932QB821.A43......
Doo1932A cited in ADS (Aitken Double Star Cat.), 1932
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20302+0321 DOO 87 2000 5 213 11.3 12.11 11.61 LD 203010.48+032137.3
20302+0321 DOO 87 2015 7 33 11.9 11.61 12.12 L 203010.08+032127.8

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

 
 
WDS 20302+0321 DOO 87 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20302+0321 DOO 87 : MEASURES
 
 
No records found.

 
 
WDS 20302+0321 : VIRTUAL EYEPIECE
 
 

20302+0321 DOO 87A mag 11.61 20302+0321 DOO 87B sep 11.9 P.A. 33.30 mag 12.12 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 20302+0321 : ALADIN DSS IMAGE @ 20h 30m 10.08s +03° 21' 27.8"
 
 
 
 
WDS 20302+0321 DOO 87 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20302+0321 DOO 87 distance=0' 20307+0311 BAL2029 distance=14' 20294+0330 HJ 2970 distance=15' 20291+0325 HJ 2968 distance=16' 20321+0330 J 2573 distance=36' 20278+0311 HJ 917 distance=37' 20286+0351 HJ 2967 distance=38' 20309+0400 BAL2538 distance=41' 20283+0351 BAL2533 distance=41' 20274+0317 BAL2025 distance=42' 20321+0251 BAL2030 distance=42' 20298+0227 BAL2027 distance=56' 20306+0224 BAL2028 distance=58' 20341+0256 BAL2031 distance=66' 20347+0321 CRC 38 distance=69' 20257+0304 BAL2024 distance=70' 20310+0211 J 561 distance=72' 20324+0426 A 2281 distance=73' 20253+0355 UC 4175 distance=81' 20247+0302 J 1342 distance=83' 20311+0444 UC 4205 distance=84' 20285+0443 J 3220 distance=86' 20315+0444 BAL2966 distance=86' 20302+0156 BAL1562 distance=86' 20353+0239 HJ 2981 distance=88' 20251+0233 BAL2023 distance=90' 20330+0201 TDT2361 distance=91' 20340+0433 A 2282 distance=93' 20251+0225 LDS4841 distance=96' 20351+0218 UC 4224 distance=98' 20327+0453 J 2314AB distance=99' 20327+0453 J 2314AC distance=99' 20267+0155 J 155BC distance=101' 20267+0155 J 155AB distance=102' 20263+0156 BAL1557 distance=103' 20281+0140 BAL1560 distance=107' 20373+0332 BAL2539 distance=108' 20291+0135 GWP2956AB distance=108' 20291+0135 GWP2957AC distance=108' 20351+0202 BAL1564 distance=109' 20360+0411 J 2192 distance=110' 20293+0132 BAL1561 distance=111' 20295+0514 UC 4199 distance=113' 20312+0513 AG 257 distance=113' 20266+0143 BAL1558 distance=113' 20379+0325 BAL2540 distance=117' 20253+0453 KPP4195AB distance=118' 20221+0331 UC 4158 distance=122' 20366+0123 HJ 5513AB distance=124' 20366+0123 HJ 5513AC distance=124' 20366+0123 HJ 5513AD distance=124' 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 20302+0321 DOO 87 33 11.9
Show 20307+0311 BAL2029 141 7.5 14
Show 20294+0330 HJ 2970 180 12.0 15
Show 20291+0325 HJ 2968 50 15.3 16
Show 20321+0330 J 2573 151 4.0 36
Show 20278+0311 HJ 917 37 12.8 37
Show 20286+0351 HJ 2967 131 7.1 38
Show 20309+0400 BAL2538 202 10.8 41
Show 20283+0351 BAL2533 256 19.0 41
Show 20274+0317 BAL2025 94 10.2 42
Show 20321+0251 BAL2030 286 10.8 42
Show 20298+0227 BAL2027 171 4.2 56
Show 20306+0224 BAL2028 196 9.5 58
Show 20341+0256 BAL2031 334 17.4 66
Show 20347+0321 CRC 38 300 10.5 69
Show 20257+0304 BAL2024 70 16.1 70
Show 20310+0211 J 561 176 4.3 72
Show 20324+0426 A 2281 63 1.9 73
Show 20253+0355 UC 4175 87 20.7 81
Show 20247+0302 J 1342 333 2.4 83
Show 20311+0444 UC 4205 254 48.5 84
Show 20285+0443 J 3220 181 3.9 86
Show 20315+0444 BAL2966 117 10.4 86
Show 20302+0156 BAL1562 308 9.0 86
Show 20353+0239 HJ 2981 5 12.9 88
Show 20251+0233 BAL2023 330 7.4 90
Show 20330+0201 TDT2361 37 0.5 91
Show 20340+0433 A 2282 166 0.2 93
Show 20251+0225 LDS4841 246 44.6 96
Show 20351+0218 UC 4224 220 16.1 98
Show 20327+0453 J 2314 AB 70 4.9 99
Show 20327+0453 J 2314 AC 138 19.0 99
Show 20267+0155 J 155 BC 164 3.3 101
Show 20267+0155 J 155 AB 348 53.1 102
Show 20263+0156 BAL1557 211 6.4 103
Show 20281+0140 BAL1560 3 6.6 107
Show 20373+0332 BAL2539 77 130.2 108
Show 20291+0135 GWP2956 AB 250 16.5 108
Show 20291+0135 GWP2957 AC 258 172.4 108
Show 20351+0202 BAL1564 268 4.8 109
Show 20360+0411 J 2192 18 4.8 110
Show 20293+0132 BAL1561 8 15.8 111
Show 20295+0514 UC 4199 240 54.1 113
Show 20312+0513 AG 257 75 1.7 113
Show 20266+0143 BAL1558 9 18.3 113
Show 20379+0325 BAL2540 94 16.1 117
Show 20253+0453 KPP4195 AB 16 11.7 118
Show 20221+0331 UC 4158 218 20.6 122
Show 20366+0123 HJ 5513 AB 93 11.9 124
Show 20366+0123 HJ 5513 AC 284 28.7 124
Show 20366+0123 HJ 5513 AD 89 42.5 124

 
 
WDS 20302+0321 : COMPONENTS
 
 
  A
B pa=33.3°
sep=11.86"
 
 
20302+0321 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 203010.08+032127.8 Mag 11.61 PmRA -15.00
PmDE -4.0 Tycho2 0514-01223-1 ADS 13917
Tycho2
Tycho2 0514-01223-1 Pflag RAmdeg 307.54204348 DEmdeg 3.35777108
PmRA -6.3 PmDE -1.0 E RAmdeg 75 E DEmdeg 84
E pmRA 2.0 E pmDE 2.1 EpRAm 1968.18 EpDEm 1959.68
Num 3 Q RAmdeg 1.9 Q DEmdeg 0.1 Q pmRA 2.0
Q pmDE 0.0 BTmag 13.560 E BTmag 0.422 VTmag 11.606
E VTmag 0.135 Prox 107 TYC HIP
CCDM RAdeg 307.54205806 DEdeg 3.35777361 EpRA 1990 1.63
EpDE 1990 1.35 E RAdeg 88.6 E DEdeg 107.7 Posflg
Corr -0.2
 
 
20302+0321 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203010.51+032137.7 Mag 12.12 PmRA 19.00
PmDE 22.0 Tycho2 0514-02356-1 Calc delta mag 0.51 Calc coord yes
Tycho2
Tycho2 0514-02356-1 Pflag RAmdeg 307.54364815 DEmdeg 3.36035314
PmRA 14.4 PmDE 22.0 E RAmdeg 71 E DEmdeg 77
E pmRA 1.8 E pmDE 1.9 EpRAm 1958.27 EpDEm 1948.92
Num 4 Q RAmdeg 1.1 Q DEmdeg 1.2 Q pmRA 1.1
Q pmDE 1.2 BTmag 12.588 E BTmag 0.248 VTmag 12.115
E VTmag 0.206 Prox 107 TYC HIP
CCDM RAdeg 307.54361444 DEdeg 3.36030028 EpRA 1990 1.63
EpDE 1990 1.33 E RAdeg 92.1 E DEdeg 111.8 Posflg
Corr -0.2