stampa
Login

Too lazy to login each time? Click on "Remember me" at login and forget about it!
Register here!


Search



Actions
Advanced Search
Go to Simbad
New report
New measure
Login


Computed Lists
Populars
Latest Populars
Doubles in session


Current system
21079+3123
GRV 421


Nearby doubles
8' : 21080+3116
LDS2940

14' : 21086+3135
J 2337

20' : 21093+3131
COU1333

25' : 21088+3102
ES 375

32' : 21098+3143
ES 2440

34' : 21099+3100
HJ 1616AB

35' : 21052+3127
GRV 412

36' : 21073+3048
TDT2766

39' : 21086+3201
KPP 830

41' : 21102+3151
SEI1423

43' : 21047+3109
DAM 226

44' : 21046+3116
J 2336

46' : 21050+3109
J 3124

46' : 21074+3038
TDT2767

51' : 21056+3043
TDT2737

52' : 21078+3214
TDT2773

54' : 21068+3215
WFC 259

55' : 21037+3130
TDT2721

56' : 21064+3031
TDT2751

56' : 21069+3218
TDT2761

57' : 21068+3222
ES 2439

58' : 21037+3104
STT 427

59' : 21057+3215
KU 130

62' : 21077+3022
UC 256

62' : 21104+3215
SEI1425AB

62' : 21092+3023
CBL 90



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.

21079+3123 GRV 421

 
 
21h 07m 54.92s +31° 23' 15.0" P.A. 185.00 sep 14.6 mag 11.70,12.60
 
 
Coord 2000 21079+3123 Discov num GRV 421 Comp Coord arcsec 2000 21 07 54.92 +31 23 15.0
Date first 1999 Date last 2016 Obs 8
Pa first 185 Pa last 184.7 P.A. Now (θ) 184.7°
Sep first 14.6 Sep last 14.596 Sep. Now (ρ) 14.596"
Mag pri 11.70 Mag sec 12.60 delta mag (ΔM) 0.9 Spectral class
Pri motion ra +020 Sec motion ra +019
Pri motion dec +029 Sec motion dec +029
Notes V (Proper motion indicates physical)
rPM=0.028 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Gaia DR2 1853032445524965888
 
 
WDS 21079+3123 GRV 421 : 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
21079+3123 GRV 421 2000 2 185 14.6 11.70 12.60 D 210754.92+312315.0
21079+3123 GRV 421 2002 3 185 14.6 11.70 12.60 D 210754.92+312315.0
21079+3123 GRV 421 2010 3 185 14.5 11.70 12.60 210754.92+312315.0
21079+3123 GRV 421 2015 4 185 14.6 11.70 12.60 V 210754.92+312315.0
21079+3123 GRV 421 2016 8 185 14.6 11.70 12.60 V 210754.92+312315.0

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

 
 
WDS 21079+3123 GRV 421 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21079+3123 GRV 421 : MEASURES
 
 
No records found.

 
 
WDS 21079+3123 : VIRTUAL EYEPIECE
 
 

21079+3123 GRV 421A mag 11.7 21079+3123 GRV 421B sep 14.6 P.A. 184.00 mag 12.6 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 21079+3123 : ALADIN DSS IMAGE @ 21h 07m 54.92s +31° 23' 15.0"
 
 
 
 
WDS 21079+3123 GRV 421 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21079+3123 GRV 421 distance=0' 21080+3116 LDS2940 distance=8' 21086+3135 J 2337 distance=14' 21093+3131 COU1333 distance=20' 21088+3102 ES 375 distance=25' 21098+3143 ES 2440 distance=32' 21099+3100 HJ 1616AB distance=34' 21099+3100 GRV 431AC distance=34' 21052+3127 GRV 412 distance=35' 21073+3048 TDT2766 distance=36' 21086+3201 KPP 830 distance=39' 21102+3151 SEI1423 distance=41' 21047+3109 DAM 226 distance=43' 21046+3116 J 2336 distance=44' 21050+3109 J 3124 distance=46' 21074+3038 TDT2767 distance=46' 21056+3043 TDT2737 distance=51' 21078+3214 TDT2773 distance=52' 21068+3215 WFC 259 distance=54' 21037+3130 TDT2721 distance=55' 21064+3031 TDT2751 distance=56' 21069+3218 TDT2761 distance=56' 21068+3222 ES 2439 distance=57' 21037+3104 STT 427 distance=58' 21057+3215 KU 130 distance=59' 21077+3022 UC 256 distance=62' 21104+3215 SEI1425AB distance=62' 21104+3215 TOB 212AC distance=62' 21092+3023 CBL 90 distance=62' 21101+3027 KPP4225 distance=64' 21103+3027 TDT2801 distance=65' 21112+3214 SEI1433 distance=66' 21065+3227 STF2759 distance=67' 21117+3038 J 1235 distance=67' 21115+3033 ALD 5 distance=69' 21118+3211 SEI1438 distance=69' 21025+3146 CRB 15BD distance=69' 21025+3146 ES 374BC distance=69' 21025+3146 ES 374AB distance=70' 21091+3232 UC 257 distance=71' 21086+3012 STF2762AB distance=72' 21086+3012 STF2762AC distance=72' 21086+3012 STF2762AD distance=72' 21059+3232 GYL 48 distance=73' 21133+3100 BRT 286 distance=73' 21119+3216 SEI1440 distance=74' 21057+3232 TDT2740 distance=75' 21077+3009 KPP1031 distance=75' 21031+3039 GRV 407 distance=76' 21058+3235 TDT2742 distance=77' 21020+3107 TDT2706 distance=77' 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 21079+3123 GRV 421 185 14.6
Show 21080+3116 LDS2940 222 7.6 8
Show 21086+3135 J 2337 349 6.2 14
Show 21093+3131 COU1333 258 0.6 20
Show 21088+3102 ES 375 42 4.5 25
Show 21098+3143 ES 2440 202 5.0 32
Show 21099+3100 HJ 1616 AB 315 10.3 34
Show 21099+3100 GRV 431 AC 16 22.5 34
Show 21052+3127 GRV 412 265 42.4 35
Show 21073+3048 TDT2766 193 1.9 36
Show 21086+3201 KPP 830 310 7.1 39
Show 21102+3151 SEI1423 226 13.5 41
Show 21047+3109 DAM 226 16 4.3 43
Show 21046+3116 J 2336 40 9.1 44
Show 21050+3109 J 3124 208 4.5 46
Show 21074+3038 TDT2767 173 10.5 46
Show 21056+3043 TDT2737 322 6.3 51
Show 21078+3214 TDT2773 212 3.3 52
Show 21068+3215 WFC 259 118 10.8 54
Show 21037+3130 TDT2721 43 2.1 55
Show 21064+3031 TDT2751 148 2.4 56
Show 21069+3218 TDT2761 236 0.4 56
Show 21068+3222 ES 2439 164 4.3 57
Show 21037+3104 STT 427 153 4.1 58
Show 21057+3215 KU 130 57 19.4 59
Show 21077+3022 UC 256 67 48.1 62
Show 21104+3215 SEI1425 AB 34 21.4 62
Show 21104+3215 TOB 212 AC 79 24.2 62
Show 21092+3023 CBL 90 113 54.5 62
Show 21101+3027 KPP4225 236 2.2 64
Show 21103+3027 TDT2801 237 0.9 65
Show 21112+3214 SEI1433 297 9.6 66
Show 21065+3227 STF2759 334 19.0 67
Show 21117+3038 J 1235 184 2.8 67
Show 21115+3033 ALD 5 153 3.7 69
Show 21118+3211 SEI1438 93 22.5 69
Show 21025+3146 CRB 15 BD 241 5.6 69
Show 21025+3146 ES 374 BC 203 4.5 69
Show 21025+3146 ES 374 AB 137 26.8 70
Show 21091+3232 UC 257 38 9.6 71
Show 21086+3012 STF2762 AB 303 3.3 72
Show 21086+3012 STF2762 AC 229 59.3 72
Show 21086+3012 STF2762 AD 66 73.1 72
Show 21059+3232 GYL 48 180 32.3 73
Show 21133+3100 BRT 286 250 6.6 73
Show 21119+3216 SEI1440 110 17.0 74
Show 21057+3232 TDT2740 305 0.4 75
Show 21077+3009 KPP1031 334 8.3 75
Show 21031+3039 GRV 407 221 59.2 76
Show 21058+3235 TDT2742 186 0.5 77
Show 21020+3107 TDT2706 204 0.6 77

 
 
WDS 21079+3123 : COMPONENTS
 
 
  A
B pa=184.0°
sep=14.58"
 
 
21079+3123 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 210754.92+312315.0 Mag 11.7 PmRA 20.00
PmDE 29.0
 
 
21079+3123 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 210754.84+312300.5 Mag 12.6 PmRA 19.00
PmDE 29.0 Calc delta mag 0.9 Calc coord yes