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Doubles in session


Current system
12423+7510
LDS 1755


Nearby doubles
20' : 12387+7458
LDS1754

29' : 12398+7441
HJ 2618

38' : 12324+7518
TDS8427

44' : 12321+7449
STF1654

45' : 12399+7425
HJ 2619

46' : 12307+7518
DOO 55

48' : 12372+7553
MLR 326

49' : 12295+7515
HJ 2612

59' : 12539+7440
STF1698

59' : 12276+7525
LDS1751

60' : 12285+7444
FOX 69

65' : 12430+7613
MFL 74

71' : 12278+7554
FMR 106

79' : 13001+7548
CLZ 58

87' : 12572+7407
HJ 2629

89' : 12229+7422
TDS8357

95' : 12322+7636
KPP 274

100' : 12454+7647
TDS 675

103' : 13001+7626
MLR 328

108' : 12349+7653
MFL 64

112' : 12365+7319
A 1091AB

116' : 13007+7343
HJ 2633

116' : 12300+7324
HJ 2613

121' : 12568+7324
TDS8607

128' : 12483+7714
MLR 428

133' : 13009+7702
MFL 116



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.

12423+7510 LDS 1755

 
 
12h 42m 02.19s +75° 08' 45.4" P.A. 126.00 sep 6.1 mag 14.90,15.70 Sp DA
 
 
Coord 2000 12423+7510 Discov num LDS1755 Comp Coord arcsec 2000 12 42 02.19 +75 08 45.4
Date first 1966 Date last 2016 Obs 16
Pa first 129 Pa last 125.9 P.A. Now (θ) 125.9°
Sep first 6.0 Sep last 6.138 Sep. Now (ρ) 6.138"
Mag pri 14.90 Mag sec 15.70 delta mag (ΔM) 0.8 Spectral class DA (white dwarf)
Pri motion ra -206 Sec motion ra -195
Pri motion dec -024 Sec motion dec -030
Notes N V (See Notes, Proper motion indicates physical)
rPM=0.06 (< 0.3, Physical double)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Draco Gaia DR2 1692021543289085184
 
 
WDS 12423+7510 LDS 1755 : NOTES
 
 
discov_num notes refcode
LDS1755 ZUC 10. Primary is white dwarf PG 1240+754 = LB 261. Zuc1992
NLTT 31644/31647 Chm2004
 
 
REFERENCES
 
 
refcode metd author reference
Chm2004 E - Chaname, J. & Gould, A. 2004ApJ...601..289C
Chm2004 ApJ 601, 289, 2004
Chm2004 (Photometry, coordinates, and astrometry from rNLTT. Astrometry from early
Chm2004 versions of 2MASS and UCAC, with date given only as "circa 2000". Measures
Chm2004 identical to discovery observations - predominantly close pairs - were assumed
Chm2004 not new observations, so not included in WDS. Similar concerns when primary and
Chm2004 secondary magnitudes or proper motions were the same.)
Zuc1992 Ci j Zuckerman, B. & Becklin, E.E. 1992ApJ...386..260Z
Zuc1992 ApJ 386, 260, 1992
Zuc1992 (IR imaging using IRTF 3.0m + ProtoCam; U. Hawaii 2.2m, UKIRT + IRCAM, NOAO 2.1m +
Zuc1992 IRIM, Steward 2.3m + NICMOS, CTIO 4m. Rho and theta derived from quoted RA and DEC
Zuc1992 differences. Dates estimated to nearest decade given for a few measures without
Zuc1992 explicitly quoted dates.)
 
 
DISCOVERER
 
 
idgroup discov author
1 LDS Luyten p.m. catalog (from additional DD list)
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12423+7510 LDS1755 1975 3 127 6.1 16.38 16.89 N 124202.22+750845.4
12423+7510 LDS1755 1999 6 126 6.0 16.38 16.89 DA NV 124203.56+750842.0
12423+7510 LDS1755 2004 7 126 6.1 15.80 15.80 DA NV R 124201.93+750845.3
12423+7510 LDS1755 2015 8 126 6.1 15.80 15.80 DA NV R 124201.93+750845.3
12423+7510 LDS1755 2016 16 126 6.1 14.90 15.70 DA NV 124202.19+750845.4

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

 
 
WDS 12423+7510 LDS 1755 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12423+7510 LDS 1755 : MEASURES
 
 
No records found.

 
 
WDS 12423+7510 : VIRTUAL EYEPIECE
 
 

12423+7510 LDS1755A mag 14.9 Sp DA 12423+7510 LDS1755B sep 3.8 P.A. 160.50 mag 15.7 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 12423+7510 : ALADIN DSS IMAGE @ 12h 42m 02.19s +75° 08' 45.4"
 
 
 
 
WDS 12423+7510 LDS 1755 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

12423+7510 LDS1755 distance=1' 12387+7458 LDS1754 distance=20' 12398+7441 HJ 2618 distance=29' 12324+7518 TDS8427 distance=38' 12321+7449 STF1654 distance=44' 12399+7425 HJ 2619 distance=45' 12307+7518 DOO 55 distance=46' 12372+7553 MLR 326 distance=48' 12295+7515 HJ 2612 distance=49' 12539+7440 STF1698 distance=59' 12276+7525 LDS1751 distance=59' 12285+7444 FOX 69 distance=60' 12430+7613 MFL 74 distance=65' 12278+7554 FMR 106 distance=71' 13001+7548 CLZ 58 distance=79' 12572+7407 HJ 2629 distance=87' 12229+7422 TDS8357 distance=89' 12322+7636 KPP 274 distance=95' 12454+7647 TDS 675 distance=100' 13001+7626 MLR 328 distance=103' 12349+7653 MFL 64 distance=108' 12365+7319 A 1091AB distance=112' 12365+7319 HJL1071AC distance=112' 13007+7343 HJ 2633 distance=116' 12300+7324 HJ 2613 distance=116' 12568+7324 TDS8607 distance=121' 12483+7714 MLR 428 distance=128' 13009+7702 MFL 116 distance=133' 12222+7315 TOK 26 distance=140' 12596+7307 TDS8630 distance=142' 12256+7721 MFL 63 distance=145' 12448+7741 FMR 110 distance=152' 12529+7741 LDS1761 distance=158' 12417+7229 UC 2388AB distance=160' 12250+7750 MFL 65 distance=172' 12588+7754 TDS8622 distance=176' 12487+7209 MLR 327 distance=183' 12490+7207 TDS 676AC distance=184' 12242+7824 MFL 60 distance=205' 12599+7151 LDS1763 distance=211' 12537+7144 HDS1809 distance=211' 12457+7133 LDS1756 distance=216' 12393+7850 MFL 61 distance=221' 12408+7901 MLR 427 distance=233' 12511+7117 LDS1759 distance=234' 12392+7912 MFL 59 distance=244' 12572+7927 LDS1762 distance=264' 12402+7019 NSN 632 distance=290' 12574+7955 MLR 429 distance=291' 12383+8003 KPP3257 distance=295' 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 12423+7510 LDS1755 126 6.1 1
Show 12387+7458 LDS1754 13 11.7 20
Show 12398+7441 HJ 2618 202 32.7 29
Show 12324+7518 TDS8427 130 1.5 38
Show 12321+7449 STF1654 23 3.8 44
Show 12399+7425 HJ 2619 265 24.5 45
Show 12307+7518 DOO 55 56 4.5 46
Show 12372+7553 MLR 326 67 0.8 48
Show 12295+7515 HJ 2612 288 13.3 49
Show 12539+7440 STF1698 109 10.1 59
Show 12276+7525 LDS1751 110 74.7 59
Show 12285+7444 FOX 69 64 2.4 60
Show 12430+7613 MFL 74 359 4.6 65
Show 12278+7554 FMR 106 338 35.3 71
Show 13001+7548 CLZ 58 188 25.4 79
Show 12572+7407 HJ 2629 26 27.0 87
Show 12229+7422 TDS8357 130 1.9 89
Show 12322+7636 KPP 274 30 3.8 95
Show 12454+7647 TDS 675 97 1.4 100
Show 13001+7626 MLR 328 240 0.4 103
Show 12349+7653 MFL 64 50 9.6 108
Show 12365+7319 A 1091 AB 320 3.8 112
Show 12365+7319 HJL1071 AC 159 78.0 112
Show 13007+7343 HJ 2633 90 4.5 116
Show 12300+7324 HJ 2613 306 24.9 116
Show 12568+7324 TDS8607 174 0.7 121
Show 12483+7714 MLR 428 71 2.2 128
Show 13009+7702 MFL 116 113 46.6 133
Show 12222+7315 TOK 26 319 10.2 140
Show 12596+7307 TDS8630 14 0.6 142
Show 12256+7721 MFL 63 257 18.8 145
Show 12448+7741 FMR 110 296 51.4 152
Show 12529+7741 LDS1761 278 228.4 158
Show 12417+7229 UC 2388 AB 198 22.5 160
Show 12250+7750 MFL 65 325 10.4 172
Show 12588+7754 TDS8622 293 0.6 176
Show 12487+7209 MLR 327 288 0.2 183
Show 12490+7207 TDS 676 AC 337 2.0 184
Show 12242+7824 MFL 60 34 6.4 205
Show 12599+7151 LDS1763 293 2.6 211
Show 12537+7144 HDS1809 195 0.2 211
Show 12457+7133 LDS1756 189 7.6 216
Show 12393+7850 MFL 61 142 6.5 221
Show 12408+7901 MLR 427 220 2.0 233
Show 12511+7117 LDS1759 18 3.8 234
Show 12392+7912 MFL 59 317 5.6 244
Show 12572+7927 LDS1762 125 5.0 264
Show 12402+7019 NSN 632 99 4.1 290
Show 12574+7955 MLR 429 24 0.2 291
Show 12383+8003 KPP3257 357 1.8 295

 
 
WDS 12423+7510 : COMPONENTS
 
 
  A
B pa=160.5°
sep=3.82"
 
 
12423+7510 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 124202.19+750845.4 Mag 14.9 Spectral class DA (white dwarf)
PmRA -206.00 PmDE -24.0
 
 
12423+7510 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 124202.52+750841.8 Mag 15.7 PmRA -195.00
PmDE -30.0 Calc delta mag 0.8 Calc coord yes