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Current system
20312+1116
CHR 99 Aa,Ab


Nearby doubles
12' : 20317+1124
BPM2182

12' : 20309+1126
LAU 4AB

18' : 20308+1059
BPM2179

21' : 20301+1103
BPM2176

26' : 20303+1054
BU 63AB

30' : 20322+1054
LDS4848

35' : 20288+1114
UC 4195

36' : 20316+1150
J 3

39' : 20329+1142
J 1AB

40' : 20285+1110
BPM2171

41' : 20339+1106
TDT2376

41' : 20298+1154
J 1243

42' : 20327+1151
BPM2184

45' : 20310+1200
DAM 673

46' : 20313+1201
BRT1345

49' : 20293+1155
BPM2173AB

51' : 20324+1202
GRV 351

52' : 20295+1033
J 3089

53' : 20345+1138
J 142

53' : 20348+1121
J 1344

54' : 20294+1029
DAM 214

55' : 20349+1120
TDT2394

55' : 20293+1029
J 3088

56' : 20326+1024
J 3092

58' : 20310+1213
GRV 348

59' : 20350+1134
BRT3358



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Neglected List I
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Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

20312+1116 CHR 99 Aa,Ab

 
 
20h 31m 11.94s +11° 15' 33.7" P.A. 142.00 sep 0.4 mag 7.10, Sp B8V dist. 321.54 pc (1048.86 l.y.)
 
 
Coord 2000 20312+1116 Discov num CHR  99 Comp Aa,Ab Coord arcsec 2000 20 31 11.94 +11 15 33.7
Date first 1983 Date last 2016 Obs 15
Pa first 126 Pa last 141.5 P.A. Now (θ) 141.5°
Sep first 0.3 Sep last 0.385 Sep. Now (ρ) 0.385"
Mag pri 7.10 Mag sec delta mag (ΔM) Spectral class B8V (blue-white)
Pri motion ra -004 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
20312+1116 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 106195 20 31 12 +11 15 34 CHR 99 Aa,Ab 2016 15 142 0.4 7.10 <===
Show HD 195482 106195 20 31 12 +11 15 34 STF 2690 A,BC 2020 161 255 17.8 7.12 7.39 0.27
Show 106195 20 31 12 +11 15 34 HJ 269 AD 2016 17 108 23.0 7.12 12.10 4.98
Show 20 31 12 +11 15 34 DA 1 BC 2016 98 184 0.3 7.90 8.00 0.10 Y
Quintuple system
5 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Delphinus SAO 106195 HIP 101235 Tycho2 1095-01694-1
Gaia DR2 1755310188501616128 HD 195483 HR 7840 GC 28545
ADS 13946 BD BD+10 4307 Distance 321.54 Distance ly 1048.86
 
 
WDS 20312+1116 CHR 99 Aa,Ab : NOTES
 
 
discov_num notes refcode
STF2690 A,BC: H 3 16. MEv2010
DA 1 BC: STT 407.
BC: Malkov et al. (2012) derive dynamical and photometric masses of
0.20 +/- 0.38 and 2.46 Msun, respectively. Mlk2012
 
 
REFERENCES
 
 
refcode metd author reference
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 CHR Center for High Ang. Res. Astronomy (speckle interferometry systems)
3 DA Dawes, W.R.
48 HJ Herschel, J.F.W.
97 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
20312+1116 CHR 99 Aa,Ab 2005 13 137 0.4 7.10   B8V 203111.94+111533.7
20312+1116 CHR 99 Aa,Ab 2016 14 142 0.4 7.10   B8V N 203111.94+111533.7

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

 
 
WDS 20312+1116 CHR 99 Aa,Ab : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20312+1116 CHR 99 Aa,Ab : MEASURES
 
 
No records found.

 
 
WDS 20312+1116 : VIRTUAL EYEPIECE
 
 

20312+1116 STF2690A mag 7.12 Sp B8V 20312+1116 CHR 99Ab sep 0.4 P.A. 142.00 20312+1116 DA 1B mag 7.9 Sp Am 20312+1116 DA 1C sep 0.3 P.A. 183.60 mag 8 20312+1116 HJ 269D sep 22.6 P.A. 108.00 mag 12.1 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 20312+1116 : ALADIN DSS IMAGE @ 20h 31m 11.94s +11° 15' 33.7"
 
 
 
 
WDS 20312+1116 CHR 99 Aa,Ab : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20312+1116 CHR 99Aa,Ab distance=0' 20317+1124 BPM2182 distance=12' 20309+1126 LAU 4AB distance=12' 20309+1126 STJ 5Aa,Ab distance=12' 20308+1059 BPM2179 distance=18' 20301+1103 BPM2176 distance=21' 20303+1054 BU 63AB distance=26' 20303+1054 BU 297AC distance=26' 20322+1054 LDS4848 distance=30' 20288+1114 UC 4195 distance=35' 20316+1150 J 3 distance=36' 20329+1142 J 1AB distance=39' 20329+1142 UC 4212AC distance=39' 20285+1110 BPM2171 distance=40' 20339+1106 TDT2376 distance=41' 20298+1154 J 1243 distance=41' 20327+1151 BPM2184 distance=42' 20310+1200 DAM 673 distance=45' 20313+1201 BRT1345 distance=46' 20293+1155 BPM2173AB distance=49' 20293+1155 BPM2173AC distance=49' 20324+1202 GRV 351 distance=51' 20295+1033 J 3089 distance=52' 20345+1138 J 142 distance=53' 20348+1121 J 1344 distance=53' 20294+1029 DAM 214 distance=54' 20349+1120 TDT2394 distance=55' 20293+1029 J 3088 distance=55' 20326+1024 J 3092 distance=56' 20310+1213 GRV 348 distance=58' 20350+1134 BRT3358 distance=59' 20339+1032 BPM2189 distance=59' 20344+1153 LDS4851 distance=60' 20297+1018 STF2686 distance=62' 20270+1116 HJ 268 distance=63' 20354+1121 YR 16 distance=63' 20289+1022 J 3263 distance=63' 20345+1036 BPM2192 distance=64' 20292+1019 J 3264 distance=64' 20340+1206 MAD 8 distance=65' 20321+1220 HJ 1528 distance=67' 20264+1103 BPM2159AB distance=71' 20264+1103 BPM2160AC distance=71' 20263+1109 UC 4181 distance=72' 20266+1148 BPM2161 distance=75' 20260+1102 BPM2157BC distance=77' 20337+1222 BPM2187 distance=77' 20260+1102 BPM2156AB distance=78' 20364+1105 UC 4230 distance=78' 20307+1233 BPM2177 distance=79' 20279+1224 TDT2297 distance=84' 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 20312+1116 CHR 99 Aa,Ab 142 0.4
Show 20312+1116 STF2690 A,BC 255 17.8
Show 20312+1116 HJ 269 AD 108 23.0
Show 20312+1116 DA 1 BC 184 0.3
Show 20317+1124 BPM2182 228 99.8 12
Show 20309+1126 LAU 4 AB 271 28.1 12
Show 20309+1126 STJ 5 Aa,Ab 140 0.9 12
Show 20308+1059 BPM2179 29 77.2 18
Show 20301+1103 BPM2176 280 53.7 21
Show 20303+1054 BU 63 AB 347 0.9 26
Show 20303+1054 BU 297 AC 340 16.9 26
Show 20322+1054 LDS4848 143 251.1 30
Show 20288+1114 UC 4195 275 70.0 35
Show 20316+1150 J 3 130 2.1 36
Show 20329+1142 J 1 AB 63 2.1 39
Show 20329+1142 UC 4212 AC 256 27.7 39
Show 20285+1110 BPM2171 30 40.3 40
Show 20339+1106 TDT2376 76 0.8 41
Show 20298+1154 J 1243 121 3.2 41
Show 20327+1151 BPM2184 293 59.7 42
Show 20310+1200 DAM 673 251 13.3 45
Show 20313+1201 BRT1345 197 4.9 46
Show 20293+1155 BPM2173 AB 21 4.6 49
Show 20293+1155 BPM2173 AC 35 34.0 49
Show 20324+1202 GRV 351 12 70.6 51
Show 20295+1033 J 3089 317 4.6 52
Show 20345+1138 J 142 242 6.5 53
Show 20348+1121 J 1344 103 2.5 53
Show 20294+1029 DAM 214 298 5.3 54
Show 20349+1120 TDT2394 2 0.5 55
Show 20293+1029 J 3088 79 7.3 55
Show 20326+1024 J 3092 336 5.3 56
Show 20310+1213 GRV 348 81 14.8 58
Show 20350+1134 BRT3358 288 1.9 59
Show 20339+1032 BPM2189 259 69.9 59
Show 20344+1153 LDS4851 328 4.4 60
Show 20297+1018 STF2686 278 25.8 62
Show 20270+1116 HJ 268 248 20.5 63
Show 20354+1121 YR 16 278 0.7 63
Show 20289+1022 J 3263 54 7.1 63
Show 20345+1036 BPM2192 343 103.0 64
Show 20292+1019 J 3264 358 5.9 64
Show 20340+1206 MAD 8 245 20.9 65
Show 20321+1220 HJ 1528 237 10.2 67
Show 20264+1103 BPM2159 AB 65 36.6 71
Show 20264+1103 BPM2160 AC 152 67.7 71
Show 20263+1109 UC 4181 356 86.7 72
Show 20266+1148 BPM2161 343 104.2 75
Show 20260+1102 BPM2157 BC 109 117.7 77
Show 20337+1222 BPM2187 283 103.7 77
Show 20260+1102 BPM2156 AB 73 53.8 78

 
 
WDS 20312+1116 : COMPONENTS
 
 
  A Ab B C
Ab pa=142.0°
sep=0.38"
 
B pa=0.0°
sep=0.00"
pa=322.0°
sep=0.38"
 
C pa=183.6°
sep=0.30"
pa=271.1°
sep=0.25"
pa=183.6°
sep=0.30"
 
D pa=108.0°
sep=22.57"
pa=107.5°
sep=22.25"
pa=108.0°
sep=22.57"
pa=107.3°
sep=22.50"
 
 
20312+1116 A
 
 
Name HD 195482 Coord arcsec 2000 203111.94+111533.7 Mag 7.12 Spectral class B8V (blue-white)
PmRA -4.00 PmDE -3.0 SAO 106195 HIP 101233
Tycho2 1095-01694-1 HD 195482 GC 28544
Tycho2
Tycho2 1095-01694-1 Pflag RAmdeg 307.80444597 DEmdeg 11.26061293
PmRA -4.1 PmDE -3.4 E RAmdeg 5 E DEmdeg 5
E pmRA 2.1 E pmDE 1.9 EpRAm 1991.54 EpDEm 1991.36
Num 5 Q RAmdeg 2.0 Q DEmdeg 0.4 Q pmRA 2.0
Q pmDE 0.5 BTmag 7.108 E BTmag 0.016 VTmag 7.116
E VTmag 0.011 Prox 172 TYC T HIP 101235
CCDM A RAdeg 307.80445583 DEdeg 11.26062111 EpRA 1990 1.61
EpDE 1990 1.45 E RAdeg 4.8 E DEdeg 5.0 Posflg
Corr 0.0
SAO
SAO 106195 DelFlag RA1950 PmRA1950 -0.001
DE1950 PmDE1950 -0.008 Vmag 7.3 SpType A0
Double code Source 70 CatNum 28544 DM BD+10 4307
DMcomp BC BDsup HD 195482 M HD 0
GC 28544 RA1950rad 5.36169909 DE1950rad 0.19355637 PmRA2000 -0.0009
PmDE2000 -0.011
Hipparcos
Catalog H HIP 101233 Proxy RAhms 20 31 11.94
DEdms +11 15 33.7 Vmag 7.28 VarFlag R Vmag H
RAdeg 307.8 DEdeg 11.2594 AstroRef B Plx -3.06
CCDM 20312+1116 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source I Qual B M HIP
Theta Rho HD 195482 BD
CD CP Dm number VIred 0.04
SpType Am R SpType Coord arcsec 2000 203111.94+111533.7
Hipparcos 2
HIP 101233 Sn 95 So 3 Nc 1
RArad 5.3721191018 DErad 0.1965129095 Plx 16.67 PmRA 10.28
PmDE -29.66 E RArad 7.49 E DErad 7.16 E Plx 10.67
E pmRA 10.25 E pmDE 8.81 Hpmag 7.4385 E Hpmag 0.0483
SHp 0 VA 0 BV 0.287 E BV 0.012
VI 0.33
CCDM
Ccdm 20312+1116 RComp Comp A Note1
Note2 Discov num DRAs 1.04 DDEs -21.3
R dRAs 10 Year Theta Rho
Obs 4 Vmag 7.0 Sp A0 PmNote *
PmRA 0 PmDE 1 Dm number +10 4307 Cat1 BD
Name2 +11 2506 Cat2 AGK2/3 HD 195483 M HD
ADS BDS A13946 M ADS BDS N IDS IDS 20264N1055A
HIC 101235
 
 
20312+1116 Ab
 
 
Coord arcsec 2000 203111.96+111533.4 SAO 106196 HIP 101235 HD 195483
HR 7840 GC 28545 BD BD+10 4307 Calc delta mag 7.1
Calc coord yes
SAO
SAO 106196 DelFlag RA1950 PmRA1950 -0.0001
DE1950 PmDE1950 0 Vmag 7 SpType A0
Double code Source 70 CatNum 28545 DM BD+10 4307
DMcomp A BDsup HD 195483 M HD 0
GC 28545 RA1950rad 5.36177753 DE1950rad 0.19357856 PmRA2000 0
PmDE2000 -0.003
Hipparcos
Catalog H HIP 101235 Proxy RAhms 20 31 13.07
DEdms +11 15 38.3 Vmag 7.08 VarFlag R Vmag H
RAdeg 307.804 DEdeg 11.2606 AstroRef A Plx -6.04
CCDM 20312+1116 N CCDM I Nsys 2 Ncomp 1
MultFlag C Source P Qual B M HIP
Theta Rho HD 195483 BD BD+10 4307
CD CP Dm number +10 4307 VIred 0.01
SpType B8V R SpType Coord arcsec 2000 203113.07+111538.3
Hipparcos 2
HIP 101235 Sn 95 So 3 Nc 1
RArad 5.372201225 DErad 0.1965349987 Plx -3.11 PmRA -13.01
PmDE -15.89 E RArad 5.64 E DErad 5.95 E Plx 8.08
E pmRA 8.12 E pmDE 7.75 Hpmag 7.0893 E Hpmag 0.0406
SHp 0.15 VA 0 BV -0.011 E BV 0.01
VI 0.01
 
 
20312+1116 B
 
 
Coord arcsec 2000 203111.94+111533.7 Mag 7.9 Spectral class Am (white) PmRA -6.00
PmDE -10.0 Calc delta mag 0.8
CCDM
Ccdm 20312+1116 RComp Comp B Note1
Note2 Discov num STF2690 DRAs -0.04 DDEs -26.3
R dRAs 10 Year 1958 Theta 256 Rho 16.7
Obs 99 Vmag 7.9 Sp A0 PmNote *
PmRA -4 PmDE -9 Dm number Cat1
Name2 +11 2505 Cat2 AGK2/3 HD 195482 M HD
ADS BDS A13946 M ADS BDS N IDS IDS 20264N1055B
HIC 101233
 
 
20312+1116 C
 
 
Coord arcsec 2000 203111.94+111533.4 Mag 8 PmRA -6.00 PmDE -10.0
Calc delta mag 0.9 Calc coord yes
CCDM
Ccdm 20312+1116 RComp B Comp C Note1
Note2 Discov num DA 1 DRAs DDEs
R dRAs Year 1960 Theta 244 Rho 0.2
Obs 99 Vmag 8.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13946 M ADS BDS N IDS IDS 20264N1055C
HIC 101233
 
 
20312+1116 D
 
 
Coord arcsec 2000 203113.40+111526.7 Mag 12.1 Calc delta mag 5 Calc coord yes
CCDM
Ccdm 20312+1116 RComp Comp D Note1
Note2 Discov num HJ 269 DRAs DDEs
R dRAs Year 1878 Theta 106 Rho 23.5
Obs 8 Vmag 12.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A13946 M ADS BDS N IDS IDS 20264N1055D
HIC