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Current system
00492+5720
A 921 AB


Nearby doubles
11' : 00503+5725
STI1442

17' : 00472+5716
TDS 29

18' : 00513+5717
TDS1638

20' : 00486+5701
STI1432

24' : 00469+5735
TDS1610AB

25' : 00465+5731
MLR 651

26' : 00514+5705
ES 1868AB

30' : 00491+5749
STF 60AB
Achird

33' : 00473+5651
STI1427

33' : 00531+5713
ES 552

35' : 00533+5711
STI1463AB

37' : 00529+5659
STI1457

43' : 00490+5802
TDS1629

45' : 00507+5637
TDS1637

45' : 00541+5701
HDS 118

49' : 00441+5655
MLR 625

49' : 00551+5714
TDS1665

51' : 00553+5714
STI1474

52' : 00555+5725
STI1475

52' : 00528+5638
BU 1AB

52' : 00522+5805
TDS1646

52' : 00430+5707
TDS1583

52' : 00526+5636
TDS1651

54' : 00515+5630
DAL 11AB

54' : 00429+5738
ES 404

55' : 00434+5750
MLR 649



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.

00492+5720 A 921 AB

 
 
00h 49m 09.10s +57° 19' 37.6" P.A. 2.00 sep 0.2 mag 9.00,9.50 Sp G5
 
 
Coord 2000 00492+5720 Discov num A   921 Comp AB Coord arcsec 2000 00 49 09.10 +57 19 37.6
Date first 1905 Date last 2008 Obs 15
Pa first 39 Pa last 2.1 P.A. Now (θ) 33.2°
Sep first 0.2 Sep last 0.239 Sep. Now (ρ) 0.181"
Mag pri 9.00 Mag sec 9.50 delta mag (ΔM) 0.5 Spectral class G5 (yellow)
Pri motion ra +016 Sec motion ra
Pri motion dec +020 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00492+5720 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 21736 00 49 09 +57 19 38 A 921 AB 2008 15 2 0.2 9.00 9.50 0.50 Y <===
Show 21736 00 49 09 +57 19 38 A 921 AB,C 2011 10 268 4.7 8.60 14.00 5.40
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cassiopeia SAO 21736 Tycho2 3663-02675-1 Gaia DR2 423900666397110016
HD 236538 ADS 674
 
 
ORBITAL ELEMENTS
 
 
Period (P)120.47y Periastron (T)1982.4y Semi-major axis (a)0.221a
Eccentricity (e)0.696 Inclination (i)59.6° Longitude of periastron (ω)96.6°
Node (Ω)140.3° Notesn ReferenceCve2012
Equinox2000 Last observation2007 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 353.6 0.166
2001 355.5 0.168
2002 357.4 0.169
2003 359.3 0.170
2004 1.1 0.171
2005 2.9 0.172
2006 4.6 0.173
2007 6.4 0.174
2008 8.1 0.175
2009 9.9 0.175
2010 11.6 0.176
2011 13.3 0.176
2012 15.0 0.177
2013 16.7 0.177
2014 18.4 0.178
2015 20.1 0.178
2016 21.7 0.178
2017 23.4 0.179
2018 25.0 0.179
2019 26.7 0.180
2020 28.3 0.180
2021 30.0 0.180
2022 31.6 0.181
2023 33.2 0.181
2024 34.8 0.182
2025 36.4 0.182
2026 38.0 0.182
2027 39.6 0.183
2028 41.2 0.183
2029 42.8 0.184
2030 44.3 0.184


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


 
  


wds00492%2B5720a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 00492+5720 A 921 AB : NOTES
 
 
discov_num notes refcode
A 921 Star C (mag. 14, 4.5") is probably physical.
 
 
REFERENCES
 
 
refcode metd author reference
Cve2012 orb - Cvetkovic, Z. 2012IAUDS.177....1C
Cve2012 Inf. Circ. 177, 1, 2012
 
 
DISCOVERER
 
 
idgroup discov author
1 A Aitken, R.G.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00492+5720 A 921 AB 1996 12 168 0.2 9.00 9.50 G5 NO 004909.10+571937.6
00492+5720 A 921 AB 2007 13 6 0.2 9.00 9.50 G5 NO 004909.10+571937.6
00492+5720 A 921 AB 2008 15 2 0.2 9.00 9.50 G5 NO 004909.10+571937.6

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

 
 
WDS 00492+5720 A 921 AB : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 00492+5720 A 921 AB : MEASURES
 
 
No records found.

 
 
WDS 00492+5720 : VIRTUAL EYEPIECE
 
 

00492+5720 A 921A mag 9 Sp G5 00492+5720 A 921B sep 0.2 P.A. 1.10 mag 9.5 00492+5720 A 921C sep 2.5 P.A. 266.70 mag 14 virtual eyepiece
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Pass over with the mouse cursor to display the catalog designation.
Radius:
Components only
 
 
WDS 00492+5720 : ALADIN DSS IMAGE @ 00h 49m 09.10s +57° 19' 37.6"
 
 
 
 
WDS 00492+5720 A 921 AB : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

00492+5720 A 921AB distance=0' 00503+5725 STI1442 distance=11' 00472+5716 TDS 29 distance=17' 00513+5717 TDS1638 distance=18' 00486+5701 STI1432 distance=20' 00469+5735 TDS1610AB distance=24' 00469+5735 TDS1610AB,C distance=24' 00465+5731 MLR 651 distance=25' 00514+5705 ES 1868AB distance=26' 00514+5705 FYM 210AC distance=26' 00491+5749 STF 60AB (Achird) distance=30' 00491+5749 SMR 2AI (Achird) distance=30' 00491+5749 SMR 2AJ (Achird) distance=30' 00491+5749 STF 60AC (Achird) distance=30' 00491+5749 STF 60AE (Achird) distance=30' 00491+5749 STF 60AH (Achird) distance=30' 00491+5749 STF 60AG (Achird) distance=30' 00491+5749 STF 60AD (Achird) distance=30' 00491+5749 STF 60AF (Achird) distance=30' 00491+5749 STF 60BC distance=30' 00491+5749 STF 60BD distance=30' 00491+5749 STF 60BE distance=30' 00491+5749 STF 60BF distance=30' 00491+5749 STF 60BG distance=30' 00491+5749 STF 60BH distance=30' 00491+5749 STF 60FG distance=31' 00473+5651 STI1427 distance=33' 00531+5713 ES 552 distance=33' 00533+5711 STI1463AB distance=35' 00533+5711 BKO 140AC distance=35' 00529+5659 STI1457 distance=37' 00490+5802 TDS1629 distance=43' 00507+5637 TDS1637 distance=45' 00541+5701 HDS 118 distance=45' 00441+5655 MLR 625 distance=49' 00551+5714 TDS1665 distance=49' 00553+5714 STI1474 distance=51' 00555+5725 STI1475 distance=52' 00528+5638 BU 1AB distance=52' 00528+5638 BU 1AC distance=52' 00528+5638 BU 1AE distance=52' 00528+5638 ABH 5AB,F distance=52' 00528+5638 ABH 5AB,G distance=52' 00528+5638 ABH 5AB,H distance=52' 00528+5638 ABH 5AB,I distance=52' 00528+5638 BKO 139AK distance=52' 00528+5638 BKO 139AL distance=52' 00528+5638 BKO 139AM distance=52' 00528+5638 BKO 139AN distance=52' 00528+5638 BKO 139AO distance=52' 00528+5638 BU 1AD distance=52' 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 00492+5720 A 921 AB 2 0.2
Show 00492+5720 A 921 AB,C 268 4.7
Show 00503+5725 STI1442 75 5.9 11
Show 00472+5716 TDS 29 245 2.6 17
Show 00513+5717 TDS1638 114 1.9 18
Show 00486+5701 STI1432 19 7.2 20
Show 00469+5735 TDS1610 AB 239 1.9 24
Show 00469+5735 TDS1610 AB,C 108 5.7 24
Show 00465+5731 MLR 651 46 1.0 25
Show 00514+5705 ES 1868 AB 185 6.5 26
Show 00514+5705 FYM 210 AC 104 23.8 26
Show Achird 00491+5749 STF 60 AB 327 13.4 30
Show Achird 00491+5749 SMR 2 AI 73 90.3 30
Show Achird 00491+5749 SMR 2 AJ 262 237.1 30
Show Achird 00491+5749 STF 60 AC 260 225.0 30
Show Achird 00491+5749 STF 60 AE 126 75.6 30
Show Achird 00491+5749 STF 60 AH 355 701.1 30
Show Achird 00491+5749 STF 60 AG 259 419.7 30
Show Achird 00491+5749 STF 60 AD 354 189.4 30
Show Achird 00491+5749 STF 60 AF 276 378.3 30
Show 00491+5749 STF 60 BC 257 218.7 30
Show 00491+5749 STF 60 BD 1 172.2 30
Show 00491+5749 STF 60 BE 126 105.5 30
Show 00491+5749 STF 60 BF 275 369.1 30
Show 00491+5749 STF 60 BG 254 404.0 30
Show 00491+5749 STF 60 BH 355 688.4 30
Show 00491+5749 STF 60 FG 188 142.2 31
Show 00473+5651 STI1427 253 15.6 33
Show 00531+5713 ES 552 86 14.5 33
Show 00533+5711 STI1463 AB 19 10.5 35
Show 00533+5711 BKO 140 AC 93 13.4 35
Show 00529+5659 STI1457 152 9.4 37
Show 00490+5802 TDS1629 121 1.0 43
Show 00507+5637 TDS1637 231 2.2 45
Show 00541+5701 HDS 118 181 0.3 45
Show 00441+5655 MLR 625 319 0.8 49
Show 00551+5714 TDS1665 29 0.6 49
Show 00553+5714 STI1474 14 6.5 51
Show 00555+5725 STI1475 2 8.1 52
Show 00528+5638 BU 1 AB 82 1.5 52
Show 00528+5638 BU 1 AC 134 3.9 52
Show 00528+5638 BU 1 AE 333 15.8 52
Show 00528+5638 ABH 5 AB,F 233 51.4 52
Show 00528+5638 ABH 5 AB,G 240 56.1 52
Show 00528+5638 ABH 5 AB,H 146 74.3 52
Show 00528+5638 ABH 5 AB,I 160 45.4 52
Show 00528+5638 BKO 139 AK 60 22.5 52
Show 00528+5638 BKO 139 AL 11 28.6 52
Show 00528+5638 BKO 139 AM 277 33.5 52
Show 00528+5638 BKO 139 AN 48 32.6 52
Show 00528+5638 BKO 139 AO 296 33.6 52

 
 
WDS 00492+5720 : COMPONENTS
 
 
  A B
B pa=1.1°
sep=0.24"
 
C pa=266.7°
sep=2.54"
pa=261.3°
sep=2.57"
 
 
00492+5720 A
 
 
Coord arcsec 2000 004909.10+571937.6 Mag 9 Spectral class G5 (yellow) PmRA 16.00
PmDE 20.0 SAO 21736 Tycho2 3663-02675-1 HD 236538
DM BD+56 130
Tycho2
Tycho2 3663-02675-1 Pflag RAmdeg 12.28791391 DEmdeg 57.32713786
PmRA 28.1 PmDE 7.2 E RAmdeg 6 E DEmdeg 6
E pmRA 1.6 E pmDE 1.6 EpRAm 1991.11 EpDEm 1991.12
Num 8 Q RAmdeg 0.8 Q DEmdeg 1.0 Q pmRA 0.9
Q pmDE 1.0 BTmag 9.477 E BTmag 0.016 VTmag 8.601
E VTmag 0.011 Prox 999 TYC T HIP
CCDM RAdeg 12.28779028 DEdeg 57.32712083 EpRA 1990 1.45
EpDE 1990 1.48 E RAdeg 5.7 E DEdeg 5.7 Posflg
Corr 0.3
SAO
SAO 21736 DelFlag RA1950 PmRA1950 0.0017
DE1950 PmDE1950 0.015 Vmag 8.3 SpType G5
Double code Source 38 CatNum 663 DM BD+56 130
DMcomp BDsup HD 236538 M HD 0
GC RA1950rad 0.20171183 DE1950rad 0.99579255 PmRA2000 0.0018
PmDE2000 0.01
CCDM
Ccdm 00492+5720 RComp Comp A Note1
Note2 Discov num DRAs -2.98 DDEs -21.9
R dRAs 10 Year Theta Rho
Obs 3 Vmag 9.3 Sp G5 PmNote *
PmRA 16 PmDE 24 Dm number +56 130 Cat1 BD
Name2 +57 84 Cat2 AGK2/3 HD 236538 M HD
ADS BDS A 674 M ADS BDS N IDS IDS 00433N5647A
HIC
 
 
00492+5720 B
 
 
Coord arcsec 2000 004909.10+571937.8 Mag 9.5 Calc delta mag 0.5 Calc coord yes
CCDM
Ccdm 00492+5720 RComp Comp B Note1 *
Note2 Discov num A 921 DRAs DDEs
R dRAs Year 1958 Theta 108 Rho 0.2
Obs 6 Vmag 9.8 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 674 M ADS BDS N IDS IDS 00433N5647B
HIC
 
 
00492+5720 C
 
 
Coord arcsec 2000 004908.79+571937.5 Mag 14 Calc delta mag 5 Calc coord yes
CCDM
Ccdm 00492+5720 RComp Comp C Note1
Note2 Discov num A 921 DRAs DDEs
R dRAs Year 1905 Theta 266 Rho 4.5
Obs 6 Vmag 14.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS A 674 M ADS BDS N IDS IDS 00433N5647C
HIC