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Doubles in session


Current system
22478-0414
STF 2944 AB
HD 215812


Nearby doubles
22' : 22491-0409
LDS5980

24' : 22485-0435
HDS3237

37' : 22497-0437
KPP4290

39' : 22453-0413
ITF 60

49' : 22448-0359
HJ 5359AB

49' : 22475-0502
CVR 953

57' : 22490-0320
LDS5000

68' : 22521-0435
TDT3760

70' : 22510-0505
CVR 956

79' : 22429-0442
A 310

83' : 22485-0536
LDS4997AB

83' : 22528-0338
UC 4839

84' : 22432-0326
RST4710

92' : 22472-0243
OCC 421

93' : 22457-0539
LDS5974

101' : 22421-0506
H N 140AB

106' : 22465-0558
J 1416

111' : 22503-0228
LDS5983

112' : 22411-0325
KPP2488

113' : 22408-0333
KUI 114

113' : 22497-0225
J 1729

116' : 22497-0222
OCC 355

118' : 22403-0445
RST4709

119' : 22552-0459
BU 178

121' : 22527-0238
HDS3248

121' : 22449-0221
OSO 185



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.

22478-0414 STF 2944 AB (HD 215812)

 
 
22h 47m 50.05s -04° 13' 43.6" P.A. 309.00 sep 1.8 mag 7.30,7.68 Sp G2V+G4 dist. 32.03 pc (104.48 l.y.)
 
 
Coord 2000 22478-0414 Discov num STF2944 Comp AB Coord arcsec 2000 22 47 50.05 -04 13 43.6
Date first 1782 Date last 2021 Obs 431
Pa first 244 Pa last 309 P.A. Now (θ) 309°
Sep first 4.4 Sep last 1.807 Sep. Now (ρ) 1.807"
Mag pri 7.30 Mag sec 7.68 delta mag (ΔM) 0.38 Spectral class G2V+G4 (yellow/yellow)
Pri motion ra -184 Sec motion ra -200
Pri motion dec -295 Sec motion dec -313
Notes N O (See Notes, Orbital solution)
rPM=0.065 (< 0.3, Physical double)
This double is physical.
 
 
22478-0414 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 215812 146315 22 47 50 -04 13 44 STF 2944 AB 2021 431 309 1.8 7.30 7.68 0.38 Y <===
Show 146315 22 47 50 -04 13 44 STF 2944 AC 2017 123 85 60.6 7.30 8.58 1.28
Show 146315 22 47 50 -04 13 44 STF 2944 AD 2000 3 348 220.3 7.30 12.90 5.60
Show 146317 22 47 50 -04 13 44 STF 2944 BC 2013 88 85 59.3 7.68 8.58 0.90
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 215812 Constellation Aquarius SAO 146315 HIP 112559
Tycho2 5237-01609-1 HD 215812 GC 31809 ADS 16270
BD BD-04 5757 Distance 32.03 Distance ly 104.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)602.8834y± 280.2595 Periastron (T)2111.4151y± 31.7156 Semi-major axis (a)3.18601a± 0.87502
Eccentricity (e)0.66386± 0.21684 Inclination (i)56.203°± 11.903 Longitude of periastron (ω)46.974°± 34.679
Node (Ω)31.116°± 19.085 Notesn ReferenceIzm2019
Equinox Last observation2015 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 293.9 2.058
2001 294.5 2.046
2002 295.1 2.034
2003 295.7 2.022
2004 296.4 2.010
2005 297.0 1.998
2006 297.6 1.986
2007 298.3 1.975
2008 298.9 1.963
2009 299.6 1.952
2010 300.2 1.940
2011 300.9 1.929
2012 301.6 1.918
2013 302.3 1.907
2014 303.0 1.896
2015 303.7 1.885
2016 304.4 1.874
2017 305.1 1.864
2018 305.9 1.853
2019 306.6 1.843
2020 307.3 1.833
2021 308.1 1.823
2022 308.9 1.813
2023 309.6 1.803
2024 310.4 1.793
2025 311.2 1.784
2026 312.0 1.774
2027 312.8 1.765
2028 313.6 1.756
2029 314.4 1.747
2030 315.3 1.738


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds22478-0414b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 22478-0414 STF 2944 AB (HD 215812) : NOTES
 
 
discov_num notes refcode
STF2944 STFB 13.
AB: NLTT 54867/54868 Chm2004
Both A and C are classed at Mt. Wilson as G2.
AC and BC: Optical pairs, based on study of relative motion of the
components using the method of apparent motion parameters. Kiy2008
AB: H 2 57. MEv2010
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Izm2019 orb u Izmailov, I.S. 2019AstL...45...30I
Izm2019 Ast. Lett. 45, 30, 2019
Izm2019 (Orbital elements from weighted solutions used when available (Table 2),
Izm2019 unweighted elements (Table 1) used for remaining 29 systems.)
Kiy2008 - Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. 2008SvAL...32..405K
Kiy2008 SvAL 34, 405, 2008
MEv2010 - MacEvoy, B. ...................
MEv2010 private communication, 2010 (see http://www.handprint.com/ASTRO/index.html)
 
 
DISCOVERER
 
 
idgroup discov author
1 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
22478-0414 STF2944 AB 2005 404 298 1.9 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2008 406 299 2.0 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2009 410 300 1.9 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2010 412 301 1.9 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2011 417 302 2.0 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2012 418 302 1.8 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2013 398 302 1.9 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2014 399 303 1.9 7.30 7.68 G2V G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2015 405 305 1.9 7.30 7.68 G2V+G4 NOD 224750.19-041344.5
22478-0414 STF2944 AB 2016 406 305 1.8 7.30 7.68 G2V+G4 NO 224750.05-041343.6
22478-0414 STF2944 AB 2017 413 306 1.9 7.30 7.68 G2V+G4 NO 224750.05-041343.6
22478-0414 STF2944 AB 2018 416 307 1.8 7.30 7.68 G2V+G4 NO 224750.05-041343.6
22478-0414 STF2944 AB 2019 425 307 1.8 7.30 7.68 G2V+G4 NO 224750.05-041343.6
22478-0414 STF2944 AB 2020 426 308 1.8 7.30 7.68 G2V+G4 NO 224750.05-041343.6
22478-0414 STF2944 AB 2021 431 309 1.8 7.30 7.68 G2V+G4 NO 224750.05-041343.6

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

 
 
WDS 22478-0414 STF 2944 AB (HD 215812) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 22478-0414 STF 2944 AB (HD 215812) : MEASURES
 
 
No records found.

 
 
WDS 22478-0414 (HD 215812) : VIRTUAL EYEPIECE
 
 

22478-0414 STF2944A mag 7.3 Sp G2V 22478-0414 STF2944B sep 1.5 P.A. 117.50 mag 7.68 Sp G4 22478-0414 STF2944C sep 60.4 P.A. 84.70 mag 8.58 22478-0414 STF2944D sep 220.3 P.A. 347.80 mag 12.9 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 22478-0414 (HD 215812) : ALADIN DSS IMAGE @ 22h 47m 50.05s -04° 13' 43.6"
 
 
 
 
WDS 22478-0414 STF 2944 AB (HD 215812) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

22478-0414 STF2944AB distance=0' 22478-0414 STF2944BC distance=1' 22491-0409 LDS5980 distance=22' 22485-0435 HDS3237 distance=24' 22497-0437 KPP4290 distance=37' 22453-0413 ITF 60 distance=39' 22448-0359 HJ 5359AB distance=49' 22448-0359 HJ 5359AC distance=49' 22475-0502 CVR 953 distance=49' 22490-0320 LDS5000 distance=57' 22521-0435 TDT3760 distance=68' 22510-0505 CVR 956 distance=70' 22429-0442 A 310 distance=79' 22485-0536 LDS4997AB distance=83' 22485-0536 HDS3238AC distance=83' 22528-0338 UC 4839 distance=83' 22432-0326 RST4710 distance=84' 22472-0243 OCC 421 distance=92' 22457-0539 LDS5974 distance=93' 22421-0506 HDS3222Aa,Ab distance=101' 22421-0506 H N 140AB distance=101' 22421-0506 H N 140AC distance=101' 22451-0240 STF2938A,BC distance=103' 22451-0240 A 2696BC distance=103' 22465-0558 J 1416 distance=106' 22503-0228 LDS5983 distance=111' 22411-0325 KPP2488 distance=112' 22408-0333 KUI 114 distance=113' 22497-0225 J 1729 distance=113' 22497-0222 OCC 355 distance=116' 22403-0445 RST4709 distance=118' 22552-0459 BU 178 distance=119' 22527-0238 HDS3248 distance=121' 22449-0221 OSO 185 distance=121' 22463-0620 GWP3194 distance=128' 22532-0229 UC 4840 distance=133' 22394-0331 UC 4785 distance=134' 22416-0233 BU 709 distance=137' 22492-0631 HLD 53 distance=139' 22555-0535 BU 1010 distance=141' 22536-0607 OCC 976Aa,Ab distance=143' 22536-0607 HDS3253AB distance=143' 22390-0516 GWP3177 distance=146' 22378-0414 HJ 5529AB (Situla) distance=151' 22378-0414 TOK 640AC (Situla) distance=151' 22378-0414 OCC 342Aa,Ab distance=151' 22571-0315 STF2959AB distance=151' 22571-0315 BU 713AC distance=151' 22571-0315 OCC 256Aa,Ab distance=151' 22571-0315 BU 713BC distance=152' 22516-0149 RST4711AB distance=156' 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 22478-0414 STF2944 AB 309 1.8
Show 22478-0414 STF2944 AD 348 220.3
Show 22478-0414 STF2944 AC 85 60.6
Show 22478-0414 STF2944 BC 85 59.3 1
Show 22491-0409 LDS5980 115 289.0 22
Show 22485-0435 HDS3237 356 0.4 24
Show 22497-0437 KPP4290 156 2.9 37
Show 22453-0413 ITF 60 229 14.9 39
Show 22448-0359 HJ 5359 AB 64 20.5 49
Show 22448-0359 HJ 5359 AC 356 15.6 49
Show 22475-0502 CVR 953 83 12.4 49
Show 22490-0320 LDS5000 174 112.6 57
Show 22521-0435 TDT3760 74 0.5 68
Show 22510-0505 CVR 956 206 10.8 70
Show 22429-0442 A 310 286 0.7 79
Show 22485-0536 LDS4997 AB 255 86.5 83
Show 22485-0536 HDS3238 AC 104 2.7 83
Show 22528-0338 UC 4839 233 52.2 83
Show 22432-0326 RST4710 66 2.9 84
Show 22472-0243 OCC 421 -1 0.0 92
Show 22457-0539 LDS5974 140 73.0 93
Show 22421-0506 HDS3222 Aa,Ab 354 0.1 101
Show 22421-0506 H N 140 AB 267 61.1 101
Show 22421-0506 H N 140 AC 185 160.8 101
Show 22451-0240 STF2938 A,BC 342 20.1 103
Show 22451-0240 A 2696 BC 71 0.6 103
Show 22465-0558 J 1416 212 9.7 106
Show 22503-0228 LDS5983 253 30.3 111
Show 22411-0325 KPP2488 82 22.3 112
Show 22408-0333 KUI 114 129 0.4 113
Show 22497-0225 J 1729 152 6.1 113
Show 22497-0222 OCC 355 -1 0.1 116
Show 22403-0445 RST4709 324 2.8 118
Show 22552-0459 BU 178 324 0.5 119
Show 22527-0238 HDS3248 118 0.7 121
Show 22449-0221 OSO 185 60 14.7 121
Show 22463-0620 GWP3194 310 33.9 128
Show 22532-0229 UC 4840 137 65.9 133
Show 22394-0331 UC 4785 141 34.1 134
Show 22416-0233 BU 709 1 2.5 137
Show 22492-0631 HLD 53 1.7 139
Show 22555-0535 BU 1010 312 1.1 141
Show 22536-0607 OCC 976 Aa,Ab -1 0.1 143
Show 22536-0607 HDS3253 AB 250 9.8 143
Show 22390-0516 GWP3177 291 98.9 146
Show Situla 22378-0414 HJ 5529 AB 252 84.4 151
Show Situla 22378-0414 TOK 640 AC 247 999.9 151
Show 22378-0414 OCC 342 Aa,Ab -1 0.1 151
Show 22571-0315 STF2959 AB 127 9.8 151
Show 22571-0315 BU 713 AC 109 21.3 151
Show 22571-0315 OCC 256 Aa,Ab -1 0.1 151

 
 
WDS 22478-0414 : COMPONENTS
 
 
  A B C
B pa=117.5°
sep=1.52"
 
C pa=84.7°
sep=60.41"
pa=83.9°
sep=59.14"
 
D pa=347.8°
sep=220.27"
pa=347.5°
sep=221.24"
pa=333.1°
sep=235.26"
 
 
22478-0414 A
 
 
Name HD 215812 Coord arcsec 2000 224750.05-041343.6 Mag 7.3 Spectral class G2V (yellow)
PmRA -184.00 PmDE -295.0 SAO 146315 HIP 112559
Tycho2 5237-01609-1 HD 215812 GC 31809 BD BD-04 5757
Tycho2
Tycho2 5237-01609-1 Pflag P RAmdeg 341.95891507 DEmdeg -4.22896776
PmRA -200.2 PmDE -313.4 E RAmdeg 6 E DEmdeg 7
E pmRA 2.7 E pmDE 2.8 EpRAm 1991.78 EpDEm 1991.61
Num 3 Q RAmdeg 0.0 Q DEmdeg 0.7 Q pmRA 0.0
Q pmDE 0.8 BTmag 7.998 E BTmag 0.017 VTmag 7.297
E VTmag 0.012 Prox 22 TYC T HIP 112559
CCDM A RAdeg 341.95956389 DEdeg -4.22831028 EpRA 1990 1.83
EpDE 1990 1.67 E RAdeg 5.1 E DEdeg 5.9 Posflg D
Corr -0.2
SAO
SAO 146315 DelFlag RA1950 PmRA1950 -0.0136
DE1950 PmDE1950 -0.3 Vmag 7.3 SpType G0
Double code Source 70 CatNum 31809 DM BD-04 5757
DMcomp A BDsup HD 215812 M HD 0
GC 31809 RA1950rad 5.95706566 DE1950rad -0.07834427 PmRA2000 -0.0134
PmDE2000 -0.305
Hipparcos
Catalog H HIP 112559 Proxy H RAhms 22 47 50.30
DEdms -04 13 41.8 Vmag 6.67 VarFlag R Vmag G
RAdeg 341.96 DEdeg -4.22828 AstroRef A Plx 31.94
CCDM 22478-0413 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 289 Rho 2.182 HD 215812 BD BD-04 5757
CD CP Dm number -04 5757 VIred 0.72
SpType G5V R SpType Coord arcsec 2000 224750.30-041341.8
Hipparcos 2
HIP 112559 Sn 15 So 3 Nc 2
RArad 5.968320743 DErad -0.0737973111 Plx 31.22 PmRA -212.41
PmDE -317.43 E RArad 0.77 E DErad 0.69 E Plx 0.92
E pmRA 1.09 E pmDE 0.79 Hpmag 6.8071 E Hpmag 0.0012
SHp 0.008 VA 0 BV 0.654 E BV 0.002
VI 0.72
 
 
22478-0414 B
 
 
Coord arcsec 2000 224750.14-041344.3 Coord calc 224750.14-041344.3 Mag 7.68 Spectral class G4 (yellow)
PmRA -184.00 PmDE -295.0 HIP 112559 Tycho2 5237-01609-2
Calc delta mag 0.38
Tycho2
Tycho2 5237-01609-2 Pflag P RAmdeg 341.95891507 DEmdeg -4.22896776
PmRA -200.2 PmDE -313.4 E RAmdeg 6 E DEmdeg 7
E pmRA 2.7 E pmDE 2.8 EpRAm 1991.78 EpDEm 1991.61
Num 3 Q RAmdeg 0.0 Q DEmdeg 0.7 Q pmRA 0.0
Q pmDE 0.8 BTmag 8.430 E BTmag 0.017 VTmag 7.684
E VTmag 0.012 Prox 22 TYC T HIP 112559
CCDM B RAdeg 341.95899000 DEdeg -4.22811139 EpRA 1990 1.83
EpDE 1990 1.68 E RAdeg 5.8 E DEdeg 6.8 Posflg D
Corr -0.2
Hipparcos
Catalog H HIP 112559 Proxy H RAhms 22 47 50.30
DEdms -04 13 41.8 Vmag 6.67 VarFlag R Vmag G
RAdeg 341.96 DEdeg -4.22828 AstroRef A Plx 31.94
CCDM 22478-0413 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 289 Rho 2.182 HD 215812 BD BD-04 5757
CD CP Dm number -04 5757 VIred 0.72
SpType G5V R SpType Coord arcsec 2000 224750.30-041341.8
Hipparcos 2
HIP 112559 Sn 15 So 3 Nc 2
RArad 5.968320743 DErad -0.0737973111 Plx 31.22 PmRA -212.41
PmDE -317.43 E RArad 0.77 E DErad 0.69 E Plx 0.92
E pmRA 1.09 E pmDE 0.79 Hpmag 6.8071 E Hpmag 0.0012
SHp 0.008 VA 0 BV 0.654 E BV 0.002
VI 0.72
 
 
22478-0414 C
 
 
Coord arcsec 2000 224754.07-041338.0 Mag 8.58 PmRA 6.00 PmDE -3.0
SAO 146317 Tycho2 5237-01527-1 HD 215813 GC 31811
DM BD-04 5759 Calc delta mag 1.28 Calc coord yes
Tycho2
Tycho2 5237-01527-1 Pflag RAmdeg 341.97507965 DEmdeg -4.22902986
PmRA 7.3 PmDE -5.4 E RAmdeg 9 E DEmdeg 9
E pmRA 0.9 E pmDE 1.1 EpRAm 1988.54 EpDEm 1990.00
Num 18 Q RAmdeg 1.0 Q DEmdeg 1.2 Q pmRA 1.0
Q pmDE 1.3 BTmag 9.079 E BTmag 0.020 VTmag 8.578
E VTmag 0.016 Prox 556 TYC T HIP
CCDM RAdeg 341.97506333 DEdeg -4.22901694 EpRA 1990 1.76
EpDE 1990 1.77 E RAdeg 10.1 E DEdeg 9.1 Posflg
Corr -0.4
SAO
SAO 146317 DelFlag RA1950 PmRA1950 0.0006
DE1950 PmDE1950 -0.01 Vmag 8.7 SpType F5
Double code Source 70 CatNum 31811 DM BD-04 5759
DMcomp BDsup HD 215813 M HD 0
GC 31811 RA1950rad 5.95729124 DE1950rad -0.07842366 PmRA2000 0.0008
PmDE2000 -0.015
 
 
22478-0414 D
 
 
Coord arcsec 2000 224746.95-041008.3 Mag 12.9 PmRA -8.00 PmDE -7.0
Calc delta mag 5.6 Calc coord yes