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Doubles in session


Current system
20312+5653
RAO 22
HD 195872


Nearby doubles
7' : 20305+5651
TDT2330

12' : 20298+5654
TDT2322

20' : 20289+5655
STI2535AB

21' : 20312+5714
A 872

24' : 20330+5712
A 739

29' : 20343+5707
STI2541

35' : 20300+5621
STI2537

39' : 20354+5712
TDT2399

40' : 20280+5723
MLR 641

40' : 20342+5622
HJ 1546

43' : 20264+5638
STF2687

43' : 20315+5611
HJ 1540AB

44' : 20337+5616
HJ 1545

44' : 20351+5624
HJ 1551

47' : 20352+5622
HJ 1552

52' : 20295+5604
KUI 97

52' : 20265+5619
BU 433AB

54' : 20309+5747
TDT2333

60' : 20381+5637
A 745

60' : 20251+5727
MLB 84

61' : 20258+5612
TDT2262

62' : 20383+5629
FOX 38

72' : 20365+5557
VBS 30AB

73' : 20400+5647
OSW 78

77' : 20243+5602
TDT2239

81' : 20311+5814
LDS1474



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.

20312+5653 RAO 22 (HD 195872)

 
 
20h 31m 12.35s +56° 53' 24.1" P.A. 152.00 sep 0.2 mag 8.03,8.00 Sp F8 dist. 66.31 pc (216.3 l.y.)
 
 
Coord 2000 20312+5653 Discov num RAO  22 Comp Coord arcsec 2000 20 31 12.35 +56 53 24.1
Date first 2012 Date last 2015 Obs 3
Pa first 196 Pa last 151.6 P.A. Now (θ) 151.6°
Sep first 0.2 Sep last 0.17 Sep. Now (ρ) 0.17"
Mag pri 8.03 Mag sec 8.00 delta mag (ΔM) 0.03 Spectral class F8 (yellow-white)
Pri motion ra -165 Sec motion ra
Pri motion dec -159 Sec motion dec
Notes N (See Notes)
Nature of this double is uncertain.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 195872 Constellation Cygnus SAO 32654 HIP 101234
Tycho2 3958-01268-1 Gaia DR2 2187348473589793408 HD 195872 BD BD+56 2440
Distance 66.31 Distance ly 216.3
 
 
WDS 20312+5653 RAO 22 (HD 195872) : NOTES
 
 
discov_num notes refcode
RAO 22 Acceleration binary (Makarov & Kaplan 2005) first resolved by Riddle Mkr2005
et al. (2015). The position angle in this paper measured on 2013.8367 RAO2015
differs by 27° from the 2012.7592 measurement. That is not the only
discrepancy between the two data sets. The photometry with P3K shows
large magnitude differences (dJ = 2.5 and dK = 2.3), while Robo-AO
detected a binary of equal brightness. The separation between the two
components is fairly small and in the P3K data, the companion lies on
the Airy ring of the primary, which could increase the errors. The
primary is a high PM star, the pair AB is most likely a physical
binary. Additional observations are needed to understand this system. Rbr2015d
 
 
REFERENCES
 
 
refcode metd author reference
Mkr2005 - Makarov, V.V. & Kaplan, G.H. 2005AJ....129.2420M
Mkr2005 AJ 129, 2420, 2005
RAO2015 Ag u Riddle, R.L., Tokovinin, A., Mason, B.D., Hartkopf, W.I., Roberts, L.C., Jr., 2015ApJ...799....4R
RAO2015 +orb Baranec, C., Law, N.M., Bui, K., Burse, M.P., Das, H.K., Dekany, R.G.,
RAO2015 Kulkarni, S., Punnadi, S., Ramaprakash, A.N., & Tendulkar, S.P.
RAO2015 ApJ 799, 4, 2015
RAO2015 (Note: Paper includes separation/magnitude difference limits for all stars
RAO2015 observed. These limits have been added to the Interferometric Catalog even for
RAO2015 resolved pairs, to indicate restrictions on any potential additional components.)
Rbr2015d Ac j Roberts, L.C., Jr., Tokovinin, A., Mason, B.D., Hartkopf, W.I., & Riddle, R.L. 2015AJ....150..130R
Rbr2015d +A AJ 150, 130, 2015
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
20312+5653 RAO 22 2012 1 196 0.2 8.70 8.80 F8 203112.36+565324.2
20312+5653 RAO 22 2013 2 164 0.2 8.03 8.00 F8 203112.35+565324.1
20312+5653 RAO 22 2015 3 152 0.2 8.03 8.00 F8 N 203112.35+565324.1

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

 
 
WDS 20312+5653 RAO 22 (HD 195872) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 20312+5653 RAO 22 (HD 195872) : MEASURES
 
 
No records found.

 
 
WDS 20312+5653 (HD 195872) : VIRTUAL EYEPIECE
 
 

20312+5653 RAO 22A mag 8.03 Sp F8 20312+5653 RAO 22B sep 0.2 P.A. 163.50 mag 8 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+5653 (HD 195872) : ALADIN DSS IMAGE @ 20h 31m 12.35s +56° 53' 24.1"
 
 
 
 
WDS 20312+5653 RAO 22 (HD 195872) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

20312+5653 RAO 22 distance=0' 20305+5651 TDT2330 distance=7' 20298+5654 TDT2322 distance=12' 20289+5655 STI2535AB distance=20' 20289+5655 TOB 187AC distance=20' 20289+5655 TOB 187AD distance=20' 20312+5714 A 872 distance=21' 20330+5712 A 739 distance=24' 20343+5707 STI2541 distance=29' 20300+5621 STI2537 distance=35' 20354+5712 TDT2399 distance=39' 20280+5723 MLR 641 distance=40' 20342+5622 HJ 1546 distance=40' 20264+5638 STF2687 distance=43' 20315+5611 HJ 1540AB distance=43' 20315+5611 HJ 1540AC distance=43' 20337+5616 HJ 1545 distance=44' 20351+5624 HJ 1551 distance=44' 20352+5622 HJ 1552 distance=47' 20295+5604 KUI 97 distance=52' 20265+5619 BU 433AB distance=52' 20265+5619 BU 433AC distance=52' 20309+5747 TDT2333 distance=54' 20381+5637 A 745 distance=60' 20251+5727 MLB 84 distance=60' 20258+5612 TDT2262 distance=61' 20383+5629 FOX 38 distance=62' 20365+5557 VBS 30AB distance=72' 20365+5557 HJ 1556AC distance=72' 20365+5557 VBS 30AD distance=72' 20400+5647 OSW 78 distance=73' 20243+5602 TDT2239 distance=77' 20311+5814 LDS1474 distance=81' 20217+5717 TDT2204 distance=82' 20412+5659 HJ 1570AB distance=82' 20412+5659 VBS 32AC distance=82' 20356+5808 A 741AB distance=83' 20356+5808 A 741AC distance=83' 20256+5544 KPP4196 distance=84' 20306+5817 LDS1473 distance=85' 20231+5745 STI2523 distance=85' 20404+5615 OSW 73 distance=86' 20208+5639 STI2520 distance=88' 20416+5730 LDS1476AB distance=92' 20416+5730 OSO 130AC distance=92' 20242+5807 A 729AB distance=94' 20242+5807 A 729AC distance=94' 20315+5520 TDS1079 distance=94' 20312+5519 A 1678 distance=95' 20423+5723 BU 152 distance=95' 20248+5534 TDS1071 distance=96' 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+5653 RAO 22 152 0.2
Show 20305+5651 TDT2330 63 0.6 7
Show 20298+5654 TDT2322 20 1.7 12
Show 20289+5655 STI2535 AB 227 13.6 20
Show 20289+5655 TOB 187 AC 132 26.9 20
Show 20289+5655 TOB 187 AD 189 31.2 20
Show 20312+5714 A 872 178 0.2 21
Show 20330+5712 A 739 195 4.6 24
Show 20343+5707 STI2541 205 10.6 29
Show 20300+5621 STI2537 343 12.7 35
Show 20354+5712 TDT2399 4 0.5 39
Show 20280+5723 MLR 641 43 1.5 40
Show 20342+5622 HJ 1546 246 17.4 40
Show 20264+5638 STF2687 118 25.1 43
Show 20315+5611 HJ 1540 AB 346 22.7 43
Show 20315+5611 HJ 1540 AC 130 40.7 43
Show 20337+5616 HJ 1545 180 15.5 44
Show 20351+5624 HJ 1551 225 42.2 44
Show 20352+5622 HJ 1552 234 21.3 47
Show 20295+5604 KUI 97 129 0.8 52
Show 20265+5619 BU 433 AB 207 7.6 52
Show 20265+5619 BU 433 AC 241 29.3 52
Show 20309+5747 TDT2333 138 2.4 54
Show 20381+5637 A 745 313 2.4 60
Show 20251+5727 MLB 84 156 7.9 60
Show 20258+5612 TDT2262 95 0.8 61
Show 20383+5629 FOX 38 301 5.4 62
Show 20365+5557 VBS 30 AB 141 4.6 72
Show 20365+5557 HJ 1556 AC 222 6.6 72
Show 20365+5557 VBS 30 AD 97 29.6 72
Show 20400+5647 OSW 78 233 186.1 73
Show 20243+5602 TDT2239 256 1.7 77
Show 20311+5814 LDS1474 209 10.2 81
Show 20217+5717 TDT2204 306 2.1 82
Show 20412+5659 HJ 1570 AB 79 14.0 82
Show 20412+5659 VBS 32 AC 345 15.4 82
Show 20356+5808 A 741 AB 157 1.3 83
Show 20356+5808 A 741 AC 211 19.8 83
Show 20256+5544 KPP4196 114 2.7 84
Show 20306+5817 LDS1473 219 63.9 85
Show 20231+5745 STI2523 170 5.8 85
Show 20404+5615 OSW 73 250 188.6 86
Show 20208+5639 STI2520 162 10.8 88
Show 20416+5730 LDS1476 AB 267 11.6 92
Show 20416+5730 OSO 130 AC 233 23.6 92
Show 20242+5807 A 729 AB 252 2.8 94
Show 20242+5807 A 729 AC 69 36.4 94
Show 20315+5520 TDS1079 126 0.9 94
Show 20312+5519 A 1678 351 2.4 95
Show 20423+5723 BU 152 82 1.2 95
Show 20248+5534 TDS1071 184 0.9 96

 
 
WDS 20312+5653 : COMPONENTS
 
 
  A
B pa=163.5°
sep=0.16"
 
 
20312+5653 A
 
 
Componente originario normalizzato AB Name HD 195872 Coord arcsec 2000 203112.35+565324.1 Mag 8.03
Spectral class F8 (yellow-white) PmRA -165.00 PmDE -159.0 SAO 32654
HIP 101234 Tycho2 3958-01268-1 HD 195872 BD BD+56 2440
Tycho2
Tycho2 3958-01268-1 Pflag RAmdeg 307.80148428 DEmdeg 56.89001745
PmRA -164.6 PmDE -160.0 E RAmdeg 6 E DEmdeg 6
E pmRA 1.6 E pmDE 1.6 EpRAm 1991.39 EpDEm 1991.44
Num 8 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.9
Q pmDE 1.0 BTmag 8.671 E BTmag 0.017 VTmag 8.026
E VTmag 0.012 Prox 999 TYC T HIP 101234
CCDM RAdeg 307.80217611 DEdeg 56.89038306 EpRA 1990 1.74
EpDE 1990 1.78 E RAdeg 5.8 E DEdeg 5.8 Posflg
Corr 0.0
SAO
SAO 32654 DelFlag RA1950 PmRA1950 -0.0207
DE1950 PmDE1950 -0.15 Vmag 8.4 SpType F8
Double code Source 38 CatNum 11439 DM BD+56 2440
DMcomp BDsup HD 195872 M HD 0
GC RA1950rad 5.36691797 DE1950rad 0.98999009 PmRA2000 -0.0202
PmDE2000 -0.154
Hipparcos
Catalog H HIP 101234 Proxy RAhms 20 31 12.53
DEdms +56 53 25.5 Vmag 7.95 VarFlag R Vmag H
RAdeg 307.802 DEdeg 56.8904 AstroRef Plx 14.18
CCDM N CCDM Nsys Ncomp 1
MultFlag G Source Qual M HIP
Theta Rho HD 195872 BD BD+56 2440
CD CP Dm number +56 2440 VIred 0.65
SpType F8 R SpType Coord arcsec 2000 203112.53+565325.5
Hipparcos 2
HIP 101234 Sn 1 So 1 Nc 1
RArad 5.37216204 DErad 0.9929248601 Plx 15.08 PmRA -158.07
PmDE -143.37 E RArad 0.84 E DErad 0.81 E Plx 0.94
E pmRA 0.89 E pmDE 0.87 Hpmag 8.0775 E Hpmag 0.0013
SHp 0.008 VA 0 BV 0.616 E BV 0.012
VI 0.68
 
 
20312+5653 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 203112.36+565324.0 Mag 8 Calc delta mag 0.03
Calc coord yes