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Doubles in session


Current system
21412+2955
GRV 491


Nearby doubles
11' : 21420+2951
MLB 720

24' : 21430+2951
KPP 498

27' : 21395+3009
A 772

30' : 21429+3014
TDT3119

32' : 21401+2928
BRT 57

35' : 21420+2924
MLB 539

36' : 21410+2920
STT 448

36' : 21384+2953
MLB 491

39' : 21383+2958
HJ 1670

42' : 21442+2942
MLB 493

45' : 21416+2911
GRV 493

50' : 21412+3043
J 3143

55' : 21418+2901
MLB 492

56' : 21455+2948
DAM 237

59' : 21457+2957
TDT3145

59' : 21451+3026
TDT3136

60' : 21458+2954
TDT3146

61' : 21384+3044
LDS4900

61' : 21458+2945
DAM 236

62' : 21407+3056
GRV 490

66' : 21362+3003
BU 167

66' : 21422+3100
OSO 154AB

66' : 21364+3015
MLB 719

67' : 21452+2914
UC 4550

69' : 21389+3058
TDT3081

75' : 21363+2917
BRT 56



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.

21412+2955 GRV 491

 
 
21h 41m 12.78s +29° 55' 31.8" P.A. 21.00 sep 31.4 mag 12.06,12.32
 
 
Coord 2000 21412+2955 Discov num GRV 491 Comp Coord arcsec 2000 21 41 12.78 +29 55 31.8
Date first 1894 Date last 2015 Obs 9
Pa first 21 Pa last 21.1 P.A. Now (θ) 21.1°
Sep first 31.9 Sep last 31.445 Sep. Now (ρ) 31.445"
Mag pri 12.06 Mag sec 12.32 delta mag (ΔM) 0.26 Spectral class
Pri motion ra -015 Sec motion ra -020
Pri motion dec -017 Sec motion dec -017
Notes S (Parallax indidates non-physical)
rPM=0.19 (< 0.3, Physical double)
This double is not physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus Tycho2 2201-01749-1 Gaia DR2 1849511976784304640
 
 
WDS 21412+2955 GRV 491 : 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
21412+2955 GRV 491 2000 4 21 31.5 11.70 12.00 D 214112.78+295531.8
21412+2955 GRV 491 2002 5 21 31.5 11.70 12.00 D 214112.78+295531.8
21412+2955 GRV 491 2010 5 21 31.6 12.06 12.32 214112.78+295531.8
21412+2955 GRV 491 2015 6 21 31.4 12.06 12.32 214112.78+295531.8

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

 
 
WDS 21412+2955 GRV 491 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 21412+2955 GRV 491 : MEASURES
 
 
No records found.

 
 
WDS 21412+2955 : VIRTUAL EYEPIECE
 
 

21412+2955 GRV 491A mag 12.06 21412+2955 GRV 491B sep 30.9 P.A. 18.50 mag 12.32 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 21412+2955 : ALADIN DSS IMAGE @ 21h 41m 12.78s +29° 55' 31.8"
 
 
 
 
WDS 21412+2955 GRV 491 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

21412+2955 GRV 491 distance=1' 21420+2951 MLB 720 distance=11' 21422+3008 MLB 575AC distance=19' 21422+3008 MLB 575BC distance=19' 21430+2951 KPP 498 distance=24' 21395+3009 A 772 distance=27' 21429+3014 TDT3119 distance=30' 21401+2928 BRT 57 distance=32' 21420+2924 MLB 539 distance=35' 21410+2920 STT 448 distance=36' 21384+2953 MLB 491 distance=36' 21383+2958 HJ 1670 distance=39' 21442+2942 MLB 493 distance=42' 21416+2911 GRV 493 distance=45' 21412+3043 J 3143 distance=50' 21418+2901 MLB 492 distance=55' 21455+2948 DAM 237 distance=56' 21457+2957 TDT3145 distance=59' 21451+3026 TDT3136 distance=59' 21458+2954 TDT3146 distance=60' 21384+3044 LDS4900 distance=61' 21458+2945 DAM 236 distance=61' 21407+3056 GRV 490 distance=62' 21362+3003 BU 167 distance=66' 21422+3100 OSO 154AB distance=66' 21422+3100 OSO 154AC distance=66' 21422+3100 OSO 154AD distance=66' 21422+3100 OSO 154AE distance=66' 21364+3015 MLB 719 distance=66' 21452+2914 UC 4550 distance=67' 21389+3058 TDT3081 distance=69' 21363+2917 BRT 56 distance=75' 21355+3012 UC 4502 distance=76' 21470+2930 GRV 503 distance=80' 21441+2845 ES 521DE distance=80' 21441+2845 FYM 25DG distance=80' 21441+2845 STF2822BD distance=81' 21441+2845 STF2822AB distance=81' 21441+2845 STF2822AC distance=81' 21441+2845 STF2822AD distance=81' 21441+2845 FYM 25AF distance=81' 21441+2845 FYM 25AG distance=81' 21353+3020 MLB 718 distance=82' 21356+2918 GRV 481 distance=82' 21473+2932 STJ 58 distance=84' 21348+3016 ES 380CD distance=85' 21348+3016 ES 380AB distance=86' 21348+3016 ES 380AC distance=86' 21409+3122 AG 275 distance=87' 21461+2855 BRT 58 distance=88' 21469+2907 CVR 919 distance=89' 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 21412+2955 GRV 491 21 31.4 1
Show 21420+2951 MLB 720 140 7.2 11
Show 21422+3008 MLB 575 AC 133 17.4 19
Show 21422+3008 MLB 575 BC 108 2.7 19
Show 21430+2951 KPP 498 58 3.9 24
Show 21395+3009 A 772 112 0.1 27
Show 21429+3014 TDT3119 157 2.7 30
Show 21401+2928 BRT 57 137 5.0 32
Show 21420+2924 MLB 539 171 4.8 35
Show 21410+2920 STT 448 31 0.1 36
Show 21384+2953 MLB 491 34 4.8 36
Show 21383+2958 HJ 1670 78 11.7 39
Show 21442+2942 MLB 493 330 8.6 42
Show 21416+2911 GRV 493 184 44.7 45
Show 21412+3043 J 3143 262 6.6 50
Show 21418+2901 MLB 492 114 7.0 55
Show 21455+2948 DAM 237 233 6.3 56
Show 21457+2957 TDT3145 250 2.2 59
Show 21451+3026 TDT3136 0.8 59
Show 21458+2954 TDT3146 359 2.5 60
Show 21384+3044 LDS4900 213 17.4 61
Show 21458+2945 DAM 236 143 5.9 61
Show 21407+3056 GRV 490 328 31.7 62
Show 21362+3003 BU 167 89 1.7 66
Show 21422+3100 OSO 154 AB 25 15.3 66
Show 21422+3100 OSO 154 AC 239 15.8 66
Show 21422+3100 OSO 154 AD 166 16.4 66
Show 21422+3100 OSO 154 AE 108 19.6 66
Show 21364+3015 MLB 719 136 6.0 66
Show 21452+2914 UC 4550 15 42.5 67
Show 21389+3058 TDT3081 114 0.8 69
Show 21363+2917 BRT 56 306 3.2 75
Show 21355+3012 UC 4502 264 46.1 76
Show 21470+2930 GRV 503 331 20.4 80
Show 21441+2845 ES 521 DE 286 17.5 80
Show 21441+2845 FYM 25 DG 164 89.6 80
Show 21441+2845 STF2822 BD 45 196.7 81
Show 21441+2845 STF2822 AB 325 1.6 81
Show 21441+2845 STF2822 AC 292 76.6 81
Show 21441+2845 STF2822 AD 43 197.0 81
Show 21441+2845 FYM 25 AF 72 111.5 81
Show 21441+2845 FYM 25 AG 73 168.1 81
Show 21353+3020 MLB 718 307 8.1 82
Show 21356+2918 GRV 481 184 64.0 82
Show 21473+2932 STJ 58 193 1.8 84
Show 21348+3016 ES 380 CD 312 2.9 85
Show 21348+3016 ES 380 AB 49 16.2 86
Show 21348+3016 ES 380 AC 106 61.5 86
Show 21409+3122 AG 275 13 10.9 87
Show 21461+2855 BRT 58 165 4.4 88
Show 21469+2907 CVR 919 201 23.5 89

 
 
WDS 21412+2955 : COMPONENTS
 
 
  A
B pa=18.5°
sep=30.93"
 
 
21412+2955 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 214112.78+295531.8 Mag 12.06 PmRA -15.00
PmDE -17.0 Tycho2 2201-01749-1
Tycho2
Tycho2 2201-01749-1 Pflag RAmdeg 325.30319238 DEmdeg 29.92548114
PmRA -13.4 PmDE -14.0 E RAmdeg 85 E DEmdeg 79
E pmRA 2.6 E pmDE 2.5 EpRAm 1978.91 EpDEm 1980.17
Num 3 Q RAmdeg 1.6 Q DEmdeg 1.1 Q pmRA 1.6
Q pmDE 1.1 BTmag 12.816 E BTmag 0.197 VTmag 12.126
E VTmag 0.147 Prox 999 TYC HIP
CCDM RAdeg 325.30322917 DEdeg 29.92551306 EpRA 1990 1.47
EpDE 1990 1.79 E RAdeg 91.3 E DEdeg 83.6 Posflg
Corr -0.1
 
 
21412+2955 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 214113.53+295601.1 Mag 12.32 PmRA -20.00
PmDE -17.0 Calc delta mag 0.26 Calc coord yes