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Current system
21217+4434
GRV 455


Nearby doubles
16' : 21212+4449
ES 1334AB

24' : 21207+4455
GRV 451

26' : 21237+4420
KPP3422

28' : 21225+4409
HJ 1640

29' : 21220+4408
HJ 1639

29' : 21227+4408
COU2303

40' : 21202+4509
LDS2510

40' : 21187+4428
LDS2507

43' : 21223+4353
TDT2930

48' : 21219+4347
TDT2924

50' : 21246+4355
BRT1149

53' : 21185+4357
TRN 32

55' : 21183+4514
TDT2893

55' : 21205+4528
KRV 9

55' : 21189+4351
COU2438

57' : 21169+4456
A 885

58' : 21166+4448
ES 97

62' : 21161+4444
MCN 2

64' : 21176+4350
COU2301

65' : 21262+4351
TDT2963

67' : 21166+4357
BRT1147

68' : 21171+4350
TDT2882

68' : 21249+4336
BRT1150

69' : 21264+4349
HO 159

70' : 21282+4445
KPP 7

72' : 21202+4325
BRT1148



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.

21217+4434 GRV 455

 
 
21h 21m 46.93s +44° 34' 46.4" P.A. 132.00 sep 28.9 mag 12.35,13.53
 
 
Coord 2000 21217+4434 Discov num GRV 455 Comp Coord arcsec 2000 21 21 46.93 +44 34 46.4
Date first 1998 Date last 2016 Obs 6
Pa first 132 Pa last 132.4 P.A. Now (θ) 132.4°
Sep first 28.8 Sep last 28.85 Sep. Now (ρ) 28.85"
Mag pri 12.35 Mag sec 13.53 delta mag (ΔM) 1.18 Spectral class
Pri motion ra +023 Sec motion ra +042
Pri motion dec +019 Sec motion dec -039
Notes
rPM=1.065
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 1971603603357617536
 
 
WDS 21217+4434 GRV 455 : 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
21217+4434 GRV 455 2000 2 132 28.8 12.00 13.30 D 212146.93+443446.4
21217+4434 GRV 455 2002 3 132 28.9 12.00 13.30 D 212146.93+443446.4
21217+4434 GRV 455 2010 3 132 28.8 12.35 13.53 212146.93+443446.4
21217+4434 GRV 455 2015 4 132 28.8 12.35 13.53 212146.93+443446.4
21217+4434 GRV 455 2016 6 132 28.9 12.35 13.53 212146.93+443446.4

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

 
 
WDS 21217+4434 GRV 455 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21217+4434 GRV 455 : MEASURES
 
 
No records found.

 
 
WDS 21217+4434 : VIRTUAL EYEPIECE
 
 

21217+4434 GRV 455A mag 12.35 21217+4434 GRV 455B sep 24.7 P.A. 142.00 mag 13.53 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 21217+4434 : ALADIN DSS IMAGE @ 21h 21m 46.93s +44° 34' 46.4"
 
 
 
 
WDS 21217+4434 GRV 455 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21217+4434 GRV 455 distance=0' 21212+4449 ES 1334AB distance=16' 21207+4455 GRV 451 distance=24' 21237+4420 KPP3422 distance=26' 21225+4409 HJ 1640 distance=28' 21220+4408 HJ 1639 distance=29' 21227+4408 COU2303 distance=29' 21202+4509 LDS2510 distance=40' 21187+4428 LDS2507 distance=40' 21223+4353 TDT2930 distance=43' 21219+4347 TDT2924 distance=48' 21246+4355 BRT1149 distance=50' 21185+4357 TRN 32 distance=53' 21183+4514 TDT2893 distance=55' 21205+4528 KRV 9 distance=55' 21189+4351 COU2438 distance=55' 21169+4456 A 885 distance=57' 21166+4448 ES 97 distance=58' 21161+4444 MCN 2 distance=62' 21176+4350 COU2301 distance=64' 21262+4351 TDT2963 distance=65' 21166+4357 BRT1147 distance=67' 21171+4350 TDT2882 distance=68' 21249+4336 BRT1150 distance=68' 21264+4349 HO 159 distance=69' 21282+4445 KPP 7 distance=70' 21202+4325 BRT1148 distance=72' 21278+4515 ES 1335 distance=76' 21196+4549 TDS1123AB distance=78' 21192+4320 TDT2899 distance=80' 21291+4455 BU 448 distance=81' 21292+4500 ES 99 distance=84' 21139+4438 TDT2839 distance=84' 21148+4518 TDT2855 distance=87' 21218+4309 STT 438 distance=87' 21200+4308 LDS2509 distance=87' 21136+4433 ES 1333 distance=88' 21293+4512 ES 100AB distance=89' 21293+4512 ES 100AC distance=89' 21152+4339 LDS2501 distance=90' 21199+4307 COU2439 distance=91' 21139+4400 COU2299 distance=91' 21154+4539 TDT2860 distance=93' 21137+4453 LDS2498 distance=94' 21214+4301 ES 1585AB distance=94' 21214+4301 ES 1585AC distance=94' 21214+4301 ES 1585BC distance=95' 21158+4326 TDT2867 distance=95' 21307+4435 ES 1336 distance=96' 21165+4554 HDS3027 distance=98' 21171+4312 A 401 distance=98' 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 21217+4434 GRV 455 132 28.9
Show 21212+4449 ES 1334 AB 307 5.3 16
Show 21207+4455 GRV 451 184 52.1 24
Show 21237+4420 KPP3422 231 17.2 26
Show 21225+4409 HJ 1640 35 7.4 28
Show 21220+4408 HJ 1639 102 10.7 29
Show 21227+4408 COU2303 269 1.9 29
Show 21202+4509 LDS2510 345 20.4 40
Show 21187+4428 LDS2507 182 3.0 40
Show 21223+4353 TDT2930 356 1.8 43
Show 21219+4347 TDT2924 221 1.0 48
Show 21246+4355 BRT1149 136 3.2 50
Show 21185+4357 TRN 32 81 3.8 53
Show 21183+4514 TDT2893 234 0.6 55
Show 21205+4528 KRV 9 123 21.2 55
Show 21189+4351 COU2438 254 1.4 55
Show 21169+4456 A 885 153 3.9 57
Show 21166+4448 ES 97 290 7.5 58
Show 21161+4444 MCN 2 303 16.0 62
Show 21176+4350 COU2301 69 0.5 64
Show 21262+4351 TDT2963 267 0.5 65
Show 21166+4357 BRT1147 2.6 67
Show 21171+4350 TDT2882 334 0.6 68
Show 21249+4336 BRT1150 60 2.9 68
Show 21264+4349 HO 159 183 5.5 69
Show 21282+4445 KPP 7 269 4.0 70
Show 21202+4325 BRT1148 83 4.1 72
Show 21278+4515 ES 1335 287 8.5 76
Show 21196+4549 TDS1123 AB 63 1.5 78
Show 21192+4320 TDT2899 136 0.6 80
Show 21291+4455 BU 448 -1 2.0 81
Show 21292+4500 ES 99 203 4.5 84
Show 21139+4438 TDT2839 352 1.2 84
Show 21148+4518 TDT2855 1 0.5 87
Show 21218+4309 STT 438 357 2.2 87
Show 21200+4308 LDS2509 176 1.9 87
Show 21136+4433 ES 1333 296 1.6 88
Show 21293+4512 ES 100 AB 157 4.4 89
Show 21293+4512 ES 100 AC 333 29.9 89
Show 21152+4339 LDS2501 274 11.3 90
Show 21199+4307 COU2439 266 0.8 91
Show 21139+4400 COU2299 33 0.4 91
Show 21154+4539 TDT2860 243 5.6 93
Show 21137+4453 LDS2498 316 13.0 94
Show 21214+4301 ES 1585 AB 230 19.2 94
Show 21214+4301 ES 1585 AC 221 26.9 94
Show 21214+4301 ES 1585 BC 202 8.4 95
Show 21158+4326 TDT2867 305 0.6 95
Show 21307+4435 ES 1336 346 4.8 96
Show 21165+4554 HDS3027 48 0.4 98
Show 21171+4312 A 401 318 0.4 98

 
 
WDS 21217+4434 : COMPONENTS
 
 
  A
B pa=142.0°
sep=24.67"
 
 
21217+4434 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 212146.93+443446.4 Mag 12.35 PmRA 23.00
PmDE 19.0
 
 
21217+4434 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 212148.35+443426.9 Mag 13.53 PmRA 42.00
PmDE -39.0 Calc delta mag 1.18 Calc coord yes