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Doubles in session


Current system
08444-4428
HDS 1256


Nearby doubles
7' : 08448-4433
SOZ 12

7' : 08443-4435
DAM 477

7' : 08440-4434
DON 276

18' : 08440-4411
WFC 74

33' : 08474-4427
DON 280

33' : 08416-4415
HU 1442

38' : 08425-4501
CPO 227

39' : 08417-4454
CPO 226

40' : 08480-4437
RST5508

41' : 08436-4508
TDS6061

44' : 08446-4345
DON 278

44' : 08416-4500
DON 270

47' : 08471-4504
TOK 911

49' : 08479-4357
TDS6105

52' : 08408-4504
SNA 6

54' : 08403-4358
CPO 222

55' : 08430-4521
TDS6054

58' : 08497-4421
CPO9102

58' : 08497-4430
DON 285

58' : 08470-4518
HDS1271

61' : 08432-4528
DAM 475AB

62' : 08457-4528
KPP3763

63' : 08390-4453
CPO 221

65' : 08437-4533
DON 274

65' : 08396-4508
DON 268

66' : 08503-4443
HU 1447



Selections
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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.

08444-4428 HDS 1256

 
 
08h 44m 23.00s -44° 28' 22.0" P.A. 210.00 sep 0.3 mag 11.08,11.98 Sp M2V: dist. 18.56 pc (60.54 l.y.)
 
 
Coord 2000 08444-4428 Discov num HDS1256 Comp Coord arcsec 2000 08 44 23.00 -44 28 22.0
Date first 1991 Date last 2021 Obs 9
Pa first 280 Pa last 210.4 P.A. Now (θ) 178.7°
Sep first 0.4 Sep last 0.284 Sep. Now (ρ) 0.219"
Mag pri 11.08 Mag sec 11.98 delta mag (ΔM) 0.9 Spectral class M2V: (red)
Pri motion ra +138 Sec motion ra
Pri motion dec +104 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Vela HIP 42881 Tycho2 7687-02128-3 Gaia DR2 5522248290957129088
CD CD-44 4756 Distance 18.56 Distance ly 60.54
 
 
ORBITAL ELEMENTS
 
 
Period (P)12.695y± 0.068 Periastron (T)2011.75y± 0.6 Semi-major axis (a)0.2902a± 0.0359
Eccentricity (e)0.536± 0.091 Inclination (i)146.9°± 13.5 Longitude of periastron (ω)60.3°± 29.6
Node (Ω)140.5°± 21.6 Notes ReferenceTok2019c
Equinox Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 354.1 0.180
2001 321.3 0.279
2002 303.9 0.343
2003 291.0 0.379
2004 279.8 0.396
2005 269.1 0.396
2006 258.1 0.383
2007 245.9 0.360
2008 231.6 0.327
2009 213.5 0.286
2010 188.6 0.236
2011 148.2 0.173
2012 53.6 0.117
2013 340.7 0.214
2014 315.2 0.302
2015 299.7 0.356
2016 287.5 0.386
2017 276.6 0.397
2018 265.8 0.393
2019 254.5 0.377
2020 241.8 0.351
2021 226.6 0.315
2022 206.9 0.271
2023 178.7 0.219
2024 128.3 0.149
2025 20.9 0.138
2026 330.9 0.244
2027 309.9 0.321
2028 295.7 0.368
2029 284.1 0.391
2030 273.3 0.398


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds08444-4428a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 08444-4428 HDS 1256 : NOTES
 
 
No records found.

 
 
REFERENCES
 
 
refcode metd author reference
Tok2019c St j Tokovinin, A., Mason, B.D., Mendez, R.A., Horch, E.P. & Briceno, C. 2019AJ....158...48T
Tok2019c +orb AJ 158, 48, 2019
 
 
DISCOVERER
 
 
idgroup discov author
1 HDS Hipparcos Double Star (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
08444-4428 HDS1256 1991 1 280 0.4 11.08 11.98 M2V: 084423.00-442822.0
08444-4428 HDS1256 2014 2 134 0.3 11.08 11.98 M2V: 084423.00-442822.0
08444-4428 HDS1256 2015 3 289 0.4 11.08 11.98 M2V: 084423.00-442822.0
08444-4428 HDS1256 2016 4 277 0.4 11.08 11.98 M2V: 084423.00-442822.0
08444-4428 HDS1256 2018 6 255 0.4 11.08 11.98 M2V: 084423.00-442822.0
08444-4428 HDS1256 2019 7 244 0.4 11.08 11.98 M2V: O 084423.00-442822.0
08444-4428 HDS1256 2020 8 228 0.3 11.08 11.98 M2V: O 084423.00-442822.0
08444-4428 HDS1256 2021 9 210 0.3 11.08 11.98 M2V: O 084423.00-442822.0

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

 
 
WDS 08444-4428 HDS 1256 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 08444-4428 HDS 1256 : MEASURES
 
 
No records found.

 
 
WDS 08444-4428 : VIRTUAL EYEPIECE
 
 

08444-4428 HDS1256A mag 11.08 Sp M2V: 08444-4428 HDS1256B sep 0.3 P.A. 202.70 mag 11.98 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 08444-4428 : ALADIN DSS IMAGE @ 08h 44m 23.00s -44° 28' 22.0"
 
 
 
 
WDS 08444-4428 HDS 1256 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

08444-4428 HDS1256 distance=0' 08448-4433 SOZ 12 distance=7' 08443-4435 DAM 477 distance=7' 08440-4434 DON 276 distance=7' 08440-4411 WFC 74 distance=18' 08474-4427 DON 280 distance=33' 08416-4415 HU 1442 distance=33' 08425-4501 CPO 227 distance=38' 08417-4454 CPO 226 distance=39' 08480-4437 RST5508 distance=40' 08436-4508 TDS6061 distance=41' 08446-4345 DON 278 distance=44' 08416-4500 DON 270 distance=44' 08471-4504 TOK 911 distance=47' 08479-4357 TDS6105 distance=49' 08408-4504 SNA 6 distance=52' 08403-4358 CPO 222 distance=54' 08430-4521 TDS6054 distance=55' 08497-4421 CPO9102 distance=58' 08497-4430 DON 285 distance=58' 08470-4518 HDS1271 distance=58' 08432-4528 DAM 475AB distance=61' 08432-4528 DAM 475AC distance=61' 08457-4528 KPP3763 distance=62' 08390-4453 CPO 221 distance=63' 08437-4533 DON 274 distance=65' 08396-4508 DON 268 distance=65' 08503-4443 HU 1447 distance=66' 08488-4515 KPP 970 distance=67' 08479-4334 DON 283 distance=67' 08385-4452 CPO 220 distance=67' 08381-4437 DON1073 distance=67' 08400-4518 TDS6019 distance=69' 08378-4434 CPO 219 distance=71' 08446-4541 DON 279 distance=73' 08503-4349 CPO 236 distance=76' 08443-4544 DON 277 distance=76' 08479-4320 HDS1274 distance=78' 08479-4321 DON 282 distance=78' 08421-4543 DON 272 distance=79' 08519-4436 DON 290 distance=81' 08509-4345 B 1632 distance=83' 08503-4523 TDS6125 distance=84' 08497-4532 ALD 40 distance=85' 08501-4327 TDS6122 distance=87' 08523-4410 B 2191 distance=88' 08371-4349 B 2183 distance=89' 08360-4424 HDS1236 distance=90' 08360-4437 TDS5970 distance=90' 08359-4425 TDS5967 distance=91' 08452-4559 FGS 23 distance=91' 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 08444-4428 HDS1256 210 0.3
Show 08448-4433 SOZ 12 85 9.8 7
Show 08443-4435 DAM 477 127 6.5 7
Show 08440-4434 DON 276 50 2.5 7
Show 08440-4411 WFC 74 214 5.4 18
Show 08474-4427 DON 280 149 2.1 33
Show 08416-4415 HU 1442 158 1.6 33
Show 08425-4501 CPO 227 48 5.2 38
Show 08417-4454 CPO 226 342 6.2 39
Show 08480-4437 RST5508 110 0.4 40
Show 08436-4508 TDS6061 172 0.5 41
Show 08446-4345 DON 278 355 0.4 44
Show 08416-4500 DON 270 106 8.2 44
Show 08471-4504 TOK 911 176 0.0 47
Show 08479-4357 TDS6105 128 0.5 49
Show 08408-4504 SNA 6 180 4.5 52
Show 08403-4358 CPO 222 4 4.6 54
Show 08430-4521 TDS6054 256 1.2 55
Show 08497-4421 CPO9102 197 4.5 58
Show 08497-4430 DON 285 190 2.2 58
Show 08470-4518 HDS1271 201 0.2 58
Show 08432-4528 DAM 475 AB 42 12.5 61
Show 08432-4528 DAM 475 AC 21 6.4 61
Show 08457-4528 KPP3763 33 1.5 62
Show 08390-4453 CPO 221 125 3.4 63
Show 08437-4533 DON 274 131 2.7 65
Show 08396-4508 DON 268 263 2.1 65
Show 08503-4443 HU 1447 218 3.5 66
Show 08488-4515 KPP 970 104 7.9 67
Show 08479-4334 DON 283 157 5.5 67
Show 08385-4452 CPO 220 173 4.1 67
Show 08381-4437 DON1073 4 5.0 67
Show 08400-4518 TDS6019 109 2.4 69
Show 08378-4434 CPO 219 203 4.9 71
Show 08446-4541 DON 279 109 2.0 73
Show 08503-4349 CPO 236 125 6.5 76
Show 08443-4544 DON 277 285 1.4 76
Show 08479-4320 HDS1274 349 0.3 78
Show 08479-4321 DON 282 180 2.4 78
Show 08421-4543 DON 272 346 2.6 79
Show 08519-4436 DON 290 5 1.0 81
Show 08509-4345 B 1632 66 1.9 83
Show 08503-4523 TDS6125 143 0.7 84
Show 08497-4532 ALD 40 190 1.2 85
Show 08501-4327 TDS6122 125 2.4 87
Show 08523-4410 B 2191 297 5.8 88
Show 08371-4349 B 2183 138 5.8 89
Show 08360-4424 HDS1236 174 0.5 90
Show 08360-4437 TDS5970 126 0.8 90
Show 08359-4425 TDS5967 179 2.1 91
Show 08452-4559 FGS 23 270 0.2 91

 
 
WDS 08444-4428 : COMPONENTS
 
 
  A
B pa=202.7°
sep=0.27"
 
 
08444-4428 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 084423.00-442822.0 Mag 11.08 Spectral class M2V: (red)
PmRA 138.00 PmDE 104.0 HIP 42881 Tycho2 7687-02128-3
CD CD-44 4756
Tycho2
Tycho2 7687-02128-3 Pflag RAmdeg 131.09620269 DEmdeg -44.47258098
PmRA 125.1 PmDE 78.5 E RAmdeg 54 E DEmdeg 47
E pmRA 2.4 E pmDE 2.2 EpRAm 1985.27 EpDEm 1986.06
Num 3 Q RAmdeg 0.8 Q DEmdeg 2.4 Q pmRA 0.7
Q pmDE 2.5 BTmag 12.388 E BTmag 0.173 VTmag 10.941
E VTmag 0.064 Prox 999 TYC HIP 42881
CCDM AC RAdeg 131.09579500 DEdeg -44.47275972 EpRA 1990 1.63
EpDE 1990 1.82 E RAdeg 56.0 E DEdeg 48.8 Posflg P
Corr 0.0
Hipparcos
Catalog H HIP 42881 Proxy H RAhms 08 44 23.00
DEdms -44 28 22.0 Vmag 10.65 VarFlag R Vmag G
RAdeg 131.096 DEdeg -44.4728 AstroRef A Plx 54.68
CCDM 08444-4428 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AC
Theta 280 Rho 0.368 HD BD
CD CD-44 4756 CP Dm number -44 4756 VIred 1.75
SpType M2V: R SpType Coord arcsec 2000 084423.00-442822.0
Hipparcos 2
HIP 42881 Sn 15 So 3 Nc 2
RArad 2.2880538109 DErad -0.776196563 Plx 53.89 PmRA 140.6
PmDE 108.99 E RArad 1.95 E DErad 1.67 E Plx 2.2
E pmRA 2.82 E pmDE 1.87 Hpmag 10.6884 E Hpmag 0.0055
SHp 0.038 VA 0 BV 1.432 E BV 0.027
VI 1.75
CCDM
Ccdm 08444-4428 RComp Comp A Note1
Note2 Discov num DRAs -0.89 DDEs -21.1
R dRAs 82 Year Theta Rho
Obs 3 Vmag 11.1 Sp PmNote
PmRA 138 PmDE 104 Dm number -44 4756 Cat1 CD
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS * IDS 08409S4407A
HIC 42881
 
 
08444-4428 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 084422.99-442822.2 Mag 11.98 Calc delta mag 0.9
Calc coord yes
CCDM
Ccdm 08444-4428 RComp Comp B Note1
Note2 Discov num RSU DRAs 0.21 DDEs -27.7
R dRAs 40 Year 1976 Theta 102 Rho 15.8
Obs 1 Vmag 13.0 Sp PmNote
PmRA PmDE Dm number Cat1
Name2 Cat2 HD M HD
ADS BDS M ADS BDS N IDS * IDS 08409S4407B
HIC