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Current system
21317+3730
GRV 474


Nearby doubles
18' : 21331+3726
SEI1525

25' : 21337+3728
SEI1526

27' : 21295+3728
SEI1519

33' : 21305+3701
SEI1521AB

40' : 21311+3652
HJ 1653

40' : 21323+3811
ES 2063

42' : 21284+3745
TDT2983

43' : 21287+3755
KPP1064

50' : 21278+3715
SEI1518

55' : 21351+3807
SRW 10AB

55' : 21358+3755
GRV 482

58' : 21272+3752
ES 2520

58' : 21294+3640
CRB 16

59' : 21268+3731
SEI1516AB

61' : 21360+3803
GRV 483

63' : 21295+3635
ES 2128AB

64' : 21321+3834
ES 2064

65' : 21283+3640
CRB 142

65' : 21322+3835
TDT3017

66' : 21345+3635
TDT3037

66' : 21264+3712
SEI1514

67' : 21285+3636
ALI 443

69' : 21294+3833
TDT2992

69' : 21323+3839
ALI 974

70' : 21296+3625
ES 258AB

72' : 21348+3832
DEA 61



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.

21317+3730 GRV 474

 
 
21h 31m 42.80s +37° 30' 34.2" P.A. 236.00 sep 24.6 mag 10.46,11.97
 
 
Coord 2000 21317+3730 Discov num GRV 474 Comp Coord arcsec 2000 21 31 42.80 +37 30 34.2
Date first 1929 Date last 2016 Obs 11
Pa first 237 Pa last 235.9 P.A. Now (θ) 235.9°
Sep first 24.7 Sep last 24.569 Sep. Now (ρ) 24.569"
Mag pri 10.46 Mag sec 11.97 delta mag (ΔM) 1.51 Spectral class
Pri motion ra +072 Sec motion ra +074
Pri motion dec +055 Sec motion dec +057
Notes T (Parallax indicates physical)
rPM=0.03 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 3183-02464-1 Gaia DR2 1952145206786538112
 
 
WDS 21317+3730 GRV 474 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Grv2004 Eu - Greaves, J. 2004MNRAS.355..585G
Grv2004 MNRAS 355, 585, 2004
Grv2005a Es - Greaves, J. ...................
Grv2005a +C Webb Soc., Double Star Circ. 13, 2005 (GRV 973 - 1147)
Grv2005a (Note: RA for all WDS designations inadvertently truncated to integer minute)
Grv2005b Pa - Greaves, J. ...................
Grv2005b private communication
Grv2005c C - Greaves, J. 2005JDSO....1...41G
Grv2005c JDSO 1, 41, 2005
Grv2006 - Greaves, J. ...................
Grv2006 private communication, 2006
Grv2006 (measures done using LSPM-north, see Vizier On-line Data Catalog I/298;
Grv2006 Lepine & Shara 2005)
Grv2006b Es - Greaves, J. ...................
Grv2006b private Communication, 2006
Grv2006b (Reduction of SDSS data. Calculated position is to J2000, but actual observation
Grv2006b epoch is unknown and proper motion may or may not have been applied.)
Grv2006c Ey - Greaves, J. ...................
Grv2006c private Communication, 2006
Grv2006c (Reduction of SPM3.3 data. Calculated position is to 1991.25, but actual
Grv2006c observation epoch is unknown and proper motion may or may not have been applied.)
Grv2008 Es - Greaves, J. ...................
Grv2008 Webb Soc., Double Star Circ. 16, 2008
Grv2011 C - Greaves, J. ...................
Grv2011 Webb Soc., Double Star Circ. 19, 2011
Grv2011 These carry a discovery designation of SPM and come from the SPM4 Catalog 2011AJ....142...15G
Grv2019a Hg u Greaves, J. 2019JDSO...15...59G
Grv2019a JDSO 15, 59, 2019
Grv2019b Hg u Greaves, J. 2019JDSO...15...77G
Grv2019b JDSO 15, 59, 2019
Grv2019c Hg u Greaves, J. ...................
Grv2019c private communication, 2019 (17 April 2019 email)
Grv2019d Hg - Greaves, J. .
Grv2019d private communication, 2019 (4 Nov 2019 email)
Grv2020a not - Greaves, J. .
Grv2020a private communication, 2020 (14 Mar 2020 email)
Grv2020b Hg j Greaves, J. .
Grv2020b Webb Soc., Double Star Circ. 28, 23, 2020
Grv2020c Hg j Greaves, J. .
Grv2020c Webb Soc., Double Star Circ. 28, 35, 2020
Grv2020d Hg j Greaves, J. .
Grv2020d Webb Soc., Double Star Circ. 28, 39, 2020
Grv2020e Hg u Greaves, J. 2020JDSO...16..317G
Grv2020e JDSO 16, 317, 2020
Grv2020f Hg Greaves, J. 2020JDSO...16..362G
Grv2020f JDSO 16, 362, 2020
Grv2020g Hg - Greaves, J. .
Grv2020g private communication, 2020 (29 Nov 2020 email)
Grv2020h Hg - Greaves, J. .
Grv2020h private communication, 2020 (10 Dec 2020 email)
Grv2020i Hg - Greaves, J. .
Grv2020i private communication, 2020 (12 Dec 2020 email)
Grv2020j Hg - Greaves, J. .
Grv2020j private communication, 2020 (21 Dec 2020 email)
Grv2021a not - Greaves, J. .
Grv2021a private communication, 2021 (18 Feb 2021 email)
Grv2021b not - Greaves, J. .
Grv2021b private communication, 2021 (23 Feb 2021 email)
Grv2021c Hg+ - Greaves, J., Rica Romero, F.M. & Otero, S. 2021JDSO...17..137G
Grv2021c +orb JDSO 17, 137, 2021
Grv2021d Hg - Greaves, J. .
Grv2021d private communication, 2021 (23 Aug 2021 email)
Grv2021e Hg - Greaves, J. .
Grv2021e private communication, 2021 (24 Aug 2021 email)
Grv2022 Hg j Greaves, J. .
Grv2022 Webb Soc., Double Star Circ. 30, 27, 2022
Grv2023a Hg - Greaves, J. .
Grv2023a private communication, 2023 (15 Feb 2023 email)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
21317+3730 GRV 474 2000 4 236 24.5 10.46 11.97 D 213142.80+373034.2
21317+3730 GRV 474 2002 5 236 24.6 10.46 11.97 D 213142.80+373034.2
21317+3730 GRV 474 2010 5 236 24.6 10.46 11.97 213142.80+373034.2
21317+3730 GRV 474 2015 6 236 24.6 10.46 11.97 W 213142.80+373034.2
21317+3730 GRV 474 2016 11 236 24.6 10.46 11.97 T 213142.80+373034.2

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

 
 
WDS 21317+3730 GRV 474 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21317+3730 GRV 474 : MEASURES
 
 
No records found.

 
 
WDS 21317+3730 : VIRTUAL EYEPIECE
 
 

21317+3730 GRV 474A mag 10.46 21317+3730 GRV 474B sep 21.2 P.A. 229.50 mag 11.97 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 21317+3730 : ALADIN DSS IMAGE @ 21h 31m 42.80s +37° 30' 34.2"
 
 
 
 
WDS 21317+3730 GRV 474 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21317+3730 GRV 474 distance=1' 21331+3726 SEI1525 distance=18' 21337+3728 SEI1526 distance=25' 21295+3728 SEI1519 distance=27' 21305+3701 SEI1521AB distance=33' 21305+3701 GII 102Aa,Ab distance=33' 21311+3652 HJ 1653 distance=40' 21323+3811 ES 2063 distance=40' 21284+3745 TDT2983 distance=42' 21287+3755 KPP1064 distance=43' 21278+3715 SEI1518 distance=50' 21351+3807 SRW 10AB distance=55' 21351+3807 SRW 10AC distance=55' 21358+3755 GRV 482 distance=55' 21272+3752 ES 2520 distance=58' 21294+3640 CRB 16 distance=58' 21268+3731 SEI1516AB distance=59' 21268+3731 HEI9004AC distance=59' 21268+3731 HEI9004AD distance=59' 21268+3731 COU1821Da,Db distance=60' 21360+3803 GRV 483 distance=61' 21295+3635 ES 2128AB distance=63' 21295+3635 ES 2128AC distance=63' 21321+3834 ES 2064 distance=64' 21283+3640 CRB 142 distance=65' 21322+3835 TDT3017 distance=65' 21345+3635 TDT3037 distance=66' 21264+3712 SEI1514 distance=66' 21285+3636 ALI 443 distance=67' 21294+3833 TDT2992 distance=69' 21323+3839 ALI 974 distance=69' 21296+3625 ES 258BC distance=70' 21296+3625 ES 258AB distance=70' 21348+3832 DEA 61 distance=72' 21376+3712 ES 2065 distance=73' 21378+3739 SEI1527AB distance=74' 21378+3739 MBR 1AC distance=74' 21329+3843 KPP4236 distance=74' 21354+3837 ES 1995 distance=78' 21340+3844 COU1976 distance=78' 21374+3810 GRV 487 distance=79' 21322+3850 ES 259 distance=79' 21278+3835 KU 61AB distance=79' 21278+3835 KU 61AC distance=79' 21278+3835 KU 61AD distance=79' 21324+3849 MLB1029AB distance=80' 21324+3849 DAM 326AC distance=80' 21324+3849 MLB1029AD distance=80' 21317+3850 TDT3009 distance=80' 21352+3839 ES 2713 distance=80' 21252+3708 SEI1513 distance=82' 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 21317+3730 GRV 474 236 24.6 1
Show 21331+3726 SEI1525 100 15.0 18
Show 21337+3728 SEI1526 160 25.3 25
Show 21295+3728 SEI1519 181 13.8 27
Show 21305+3701 SEI1521 AB 225 2.9 33
Show 21305+3701 GII 102 Aa,Ab 306 0.4 33
Show 21311+3652 HJ 1653 195 19.5 40
Show 21323+3811 ES 2063 227 2.7 40
Show 21284+3745 TDT2983 111 0.5 42
Show 21287+3755 KPP1064 246 8.5 43
Show 21278+3715 SEI1518 143 15.5 50
Show 21351+3807 SRW 10 AB 314 19.5 55
Show 21351+3807 SRW 10 AC 11 19.6 55
Show 21358+3755 GRV 482 188 49.3 55
Show 21272+3752 ES 2520 238 6.2 58
Show 21294+3640 CRB 16 56 111.6 58
Show 21268+3731 SEI1516 AB 335 3.9 59
Show 21268+3731 HEI9004 AC 275 25.5 59
Show 21268+3731 HEI9004 AD 335 109.8 59
Show 21268+3731 COU1821 Da,Db 96 0.7 60
Show 21360+3803 GRV 483 237 21.8 61
Show 21295+3635 ES 2128 AB 304 7.2 63
Show 21295+3635 ES 2128 AC 101 24.9 63
Show 21321+3834 ES 2064 244 11.5 64
Show 21283+3640 CRB 142 46 25.7 65
Show 21322+3835 TDT3017 267 0.8 65
Show 21345+3635 TDT3037 273 1.9 66
Show 21264+3712 SEI1514 184 12.0 66
Show 21285+3636 ALI 443 298 4.3 67
Show 21294+3833 TDT2992 109 2.1 69
Show 21323+3839 ALI 974 210 10.6 69
Show 21296+3625 ES 258 BC 10 19.7 70
Show 21296+3625 ES 258 AB 36 9.8 70
Show 21348+3832 DEA 61 195 66.9 72
Show 21376+3712 ES 2065 4 3.9 73
Show 21378+3739 SEI1527 AB 332 25.5 74
Show 21378+3739 MBR 1 AC 89 14.5 74
Show 21329+3843 KPP4236 205 1.8 74
Show 21354+3837 ES 1995 39 2.3 78
Show 21340+3844 COU1976 30 0.4 78
Show 21374+3810 GRV 487 201 74.8 79
Show 21322+3850 ES 259 319 3.9 79
Show 21278+3835 KU 61 AB 271 3.9 79
Show 21278+3835 KU 61 AC 206 14.3 79
Show 21278+3835 KU 61 AD 235 25.7 79
Show 21324+3849 MLB1029 AB 204 5.9 80
Show 21324+3849 DAM 326 AC 315 13.4 80
Show 21324+3849 MLB1029 AD 290 29.1 80
Show 21317+3850 TDT3009 122 0.5 80
Show 21352+3839 ES 2713 98 17.7 80
Show 21252+3708 SEI1513 90 14.5 82

 
 
WDS 21317+3730 : COMPONENTS
 
 
  A
B pa=229.5°
sep=21.22"
 
 
21317+3730 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 213142.80+373034.2 Mag 10.46 PmRA 72.00
PmDE 55.0 Tycho2 3183-02464-1
Tycho2
Tycho2 3183-02464-1 Pflag RAmdeg 322.92834182 DEmdeg 37.50950396
PmRA 73.4 PmDE 55.7 E RAmdeg 20 E DEmdeg 19
E pmRA 1.8 E pmDE 1.8 EpRAm 1988.34 EpDEm 1989.00
Num 5 Q RAmdeg 1.2 Q DEmdeg 0.6 Q pmRA 1.2
Q pmDE 0.6 BTmag 11.215 E BTmag 0.041 VTmag 10.461
E VTmag 0.031 Prox 245 TYC T HIP
CCDM RAdeg 322.92812889 DEdeg 37.50937278 EpRA 1990 1.60
EpDE 1990 1.62 E RAdeg 22.5 E DEdeg 21.2 Posflg
Corr 0.1
 
 
21317+3730 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 213141.44+373020.4 Mag 11.97 PmRA 74.00
PmDE 57.0 Tycho2 3183-02190-1 Calc delta mag 1.51 Calc coord yes
Tycho2
Tycho2 3183-02190-1 Pflag RAmdeg 322.92127959 DEmdeg 37.50570658
PmRA 85.6 PmDE 55.2 E RAmdeg 72 E DEmdeg 69
E pmRA 4.5 E pmDE 4.0 EpRAm 1986.93 EpDEm 1986.27
Num 3 Q RAmdeg 0.0 Q DEmdeg 0.4 Q pmRA 0.0
Q pmDE 0.4 BTmag 13.742 E BTmag 0.284 VTmag 11.966
E VTmag 0.122 Prox 245 TYC HIP
CCDM RAdeg 322.92102806 DEdeg 37.50557806 EpRA 1990 1.60
EpDE 1990 1.61 E RAdeg 74.7 E DEdeg 71.9 Posflg
Corr 0.1