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Doubles in session


Current system
05245-0224
DA 5 AB
Algjebba


Nearby doubles
7' : 05247-0230
BU 556

25' : 05235-0202
BAL 39

26' : 05262-0223
TOB9005

27' : 05261-0216
BU 1396

27' : 05250-0249
H 6 68AB

29' : 05253-0158
CVS 33

29' : 05261-0209
CVS 840

36' : 05256-0255
SKF2216

43' : 05263-0220
DOO 33

47' : 05217-0203
STF 693

50' : 05245-0135
CVR 456

58' : 05253-0126
J 327

62' : 05239-0123
J 326

63' : 05282-0156
HJ 702

65' : 05203-0241
A 2804

67' : 05277-0137
BAL 306

70' : 05205-0301
RST4273

72' : 05275-0129
J 328

73' : 05258-0115
CVS 806

74' : 05291-0201
D 8AB

75' : 05273-0123
CVS 938AB

77' : 05282-0131
DAM 749

77' : 05289-0146
A 849

79' : 05281-0128
CVS1020

79' : 05276-0121
CVS 969

80' : 05260-0108
CVS 832



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.

05245-0224 DA 5 AB (Algjebba)

 
 
05h 24m 28.73s -02° 23' 49.3" P.A. 79.00 sep 1.8 mag 3.56,4.87 Sp B1V+B2e dist. 299.4 pc (976.64 l.y.)
 
 
Coord 2000 05245-0224 Discov num DA    5 Comp AB Coord arcsec 2000 05 24 28.73 -02 23 49.3
Date first 1848 Date last 2021 Obs 250
Pa first 87 Pa last 79 P.A. Now (θ) 79°
Sep first 0.9 Sep last 1.8 Sep. Now (ρ) 1.8"
Mag pri 3.56 Mag sec 4.87 delta mag (ΔM) 1.31 Spectral class B1V+B2e (blue-white/blue-white)
Pri motion ra +003 Sec motion ra -001
Pri motion dec -002 Sec motion dec -003
Notes N L (See Notes, Linear solution)
rPM=1.144
This double is not physical.
 
 
05245-0224 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 132071 05 24 29 -02 23 49 MCA 18 Aa,Ab 2019 30 138 0.0 3.60 5.30 1.70 Y
Show Algjebba 132071 05 24 29 -02 23 49 DA 5 AB 2021 250 79 1.8 3.56 4.87 1.31 <===
Show 132071 05 24 29 -02 23 49 H 6 67 AC 2017 8 51 114.3 3.56 10.99 7.43
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Algjebba Constellation Orion SAO 132071 HIP 25281
Tycho2 4757-01588-1 Gaia DR2 3214077516844988800 HD 35411 HR 1788
GC 6655 ADS 4002 BD BD-02 1235 Bayer Eta Orionis
Bayer name Eta Ori Flamsteed 28 Orionis Flamsteed name 28 Ori Distance 299.4
Distance ly 976.64 Bayer greek η Ori
Meaning before
 
 
WDS 05245-0224 DA 5 AB (Algjebba) : NOTES
 
 
discov_num notes refcode
MCA 18 eta Ori = 28 Ori. Quintuple; primary is a double-lined spectroscopic
triple with periods 7.99 d (Aa1,Aa2) and 9.2 yr (Aa,Ab). The close
pair eclipses, and shows an 8-hour pulsation in one of the components.
Aa is also eclipsing binary (period 7.9904 day). Zas2010
Aa,Ab. McAlister (1976) orbit uses the elements P, T, e, and the McA1976
longitude of periastron for the 9-year orbit, from a spectroscopic
orbit by Ziska & Beardsley (1981), and assumes the orbit is edge-on; Bey1981
semi-major axis and node are based on a single speckle observation.
The ascending node has been reversed.
The visual companions are star B (mag. 4.8, 1.5") in slow retrograde
motion, and C (mag. 9.4, 115").
See Baize & Petit (1989) catalog of doubles with variable component. Baz1989d
1985.8542: This measurement of the Aab,c component of eta Ori,
overlooked in the original analysis of this run, was discovered during
preparation of a paper on absolute quadrant determinations by Bagnuolo Bgn1992
et al. (1992) Hrt1992b
Aa,Ab: Malkov et al. (2012) derive dynamical, photometric, and
spectroscopic masses 25.82 +/- 24.95, 24.50, 22.65 Msun, respectively. Mlk2012
DA 5 AB: Rectilinear solution by Hartkopf et al. (2012). Hrt2012a
MCA 18 Aa,Ab has an SB1 orbit with P=9.44yr. The orbit given here uses only
the speckle data, however. Tok2015c
H 6 67 H VI 67.
 
 
REFERENCES
 
 
refcode metd author reference
Baz1989d - Baize, P. & Petit, M. 1989A&AS...77..497B
Baz1989d A&AS 77, 497, 1989
Bey1981 - Ziska, E.R. & Beardsley, W.R. 1981AJ.....86.1944Z
Bey1981 AJ 86, 1944, 1981
Bgn1992 orb - Bagnuolo, W.G., Mason, B.D., Barry, D., Hartkopf, W., & McAlister, H.A. 1992AJ....103.1399B
Bgn1992 AJ 103, 1399, 1992
Hrt1992b Sc j Hartkopf, W.I., McAlister, H.A., & Franz, O.G. 1992AJ....104..810H
Hrt1992b AJ 104, 810, 1992
Hrt2012a orb - Hartkopf, W.I., Tokovinin, A., & Mason, B.D. 2012AJ....143...42H
Hrt2012a +lin AJ 143, 42, 2012
McA1976 orb - McAlister, H.A. 1976PASP...88..957M
McA1976 PASP 88, 957, 1976
Mlk2012 not - Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. 2012A&A...546A..69M
Mlk2012 A&A 546, A69, 2012
Tok2015c orb+j Tokovinin, A., Mason, B.D., Hartkopf, W.I., Mendez, R.A., & Horch, E.P. 2015AJ....150...50T
Tok2015c +St AJ 150, 50, 2015 (some measures corrected in Tok2017b) 2017AJ....154..110T
Zas2010 - Zasche, P. ...................
Zas2010 private communication, 2010
 
 
DISCOVERER
 
 
idgroup discov author
1 DA Dawes, W.R.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
05245-0224 DA 5 AB 2006 224 78 1.8 3.56 4.87 B1V+B2e D 052428.62-022349.7
05245-0224 DA 5 AB 2009 226 77 1.8 3.56 4.87 B1V+B2e D 052428.62-022349.7
05245-0224 DA 5 AB 2010 232 78 1.8 3.56 4.87 B1V+B2e N D 052428.62-022349.7
05245-0224 DA 5 AB 2011 234 77 1.8 3.56 4.87 B1V+B2e N D 052428.62-022349.7
05245-0224 DA 5 AB 2012 235 78 1.8 3.56 4.87 B1V B2e NLD 052428.62-022349.7
05245-0224 DA 5 AB 2013 238 77 1.8 3.56 4.87 B1V B2e NLD 052428.62-022349.7
05245-0224 DA 5 AB 2015 240 77 1.8 3.56 4.87 B1V+B2e NLD 052428.62-022349.7
05245-0224 DA 5 AB 2017 246 77 1.8 3.56 4.87 B1V+B2e NL 052428.62-022349.7
05245-0224 DA 5 AB 2018 247 77 1.8 3.56 4.87 B1V+B2e NL 052428.62-022349.7
05245-0224 DA 5 AB 2019 248 77 1.8 3.56 4.87 B1V+B2e NL 052428.62-022349.7
05245-0224 DA 5 AB 2020 249 77 1.9 3.56 4.87 B1V+B2e NL 052428.62-022349.7
05245-0224 DA 5 AB 2021 250 79 1.8 3.56 4.87 B1V+B2e NL 052428.73-022349.3

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

 
 
WDS 05245-0224 DA 5 AB (Algjebba) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 05245-0224 DA 5 AB (Algjebba) : MEASURES
 
 
No records found.

 
 
WDS 05245-0224 (Algjebba) : VIRTUAL EYEPIECE
 
 

05245-0224 DA 5A mag 3.56 Sp B1V 05245-0224 MCA 18Ab mag 5.3 Sp B2e 05245-0224 DA 5B sep 1.8 P.A. 79.00 mag 4.87 Sp B2e 05245-0224 H 6 67C sep 114.2 P.A. 51.40 mag 10.99 Sp B2e 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 05245-0224 (Algjebba) : ALADIN DSS IMAGE @ 05h 24m 28.73s -02° 23' 49.3"
 
 
 
 
WDS 05245-0224 DA 5 AB (Algjebba) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

05245-0224 MCA 18Aa,Ab (Algjebba) distance=1' 05245-0224 DA 5AB (Algjebba) distance=1' 05245-0224 H 6 67AC (Algjebba) distance=1' 05247-0230 BU 556 distance=7' 05235-0202 BAL 39 distance=25' 05262-0223 TOB9005 distance=26' 05261-0216 BU 1396 distance=27' 05250-0249 H 6 68AB distance=27' 05250-0249 BAG 42Aa,Ab distance=27' 05253-0158 CVS 33 distance=29' 05261-0209 CVS 840 distance=29' 05256-0255 SKF2216 distance=36' 05263-0220 DOO 33 distance=43' 05217-0203 STF 693 distance=47' 05245-0135 CVR 456 distance=50' 05253-0126 J 327 distance=58' 05239-0123 J 326 distance=62' 05282-0156 HJ 702 distance=63' 05203-0241 A 2804 distance=65' 05277-0137 BAL 306 distance=67' 05205-0301 RST4273 distance=70' 05275-0129 J 328 distance=72' 05258-0115 CVS 806 distance=73' 05291-0201 D 8CD distance=73' 05291-0201 D 8AB distance=74' 05291-0201 D 8AC distance=74' 05273-0123 CVS 938AB distance=75' 05273-0123 CVS 938AC distance=75' 05282-0131 DAM 749 distance=77' 05289-0146 A 849 distance=77' 05281-0128 CVS1020 distance=79' 05276-0121 CVS 969 distance=79' 05260-0108 CVS 832 distance=80' 05284-0129 CVS 52 distance=81' 05194-0303 DAM1331 distance=86' 05289-0318 DA 6 distance=87' 05285-0122 CVS1055 distance=87' 05290-0128 CVS1122AB distance=89' 05290-0128 CVS1122AC distance=89' 05192-0304 A 53AB distance=89' 05192-0304 A 53AC distance=89' 05192-0304 LSC 134AD distance=89' 05192-0304 A 53Ba,Bb distance=89' 05284-0330 BUP 80 distance=89' 05291-0128 CVS1129 distance=89' 05295-0135 CVS1168 distance=90' 05278-0109 CVS 991 distance=90' 05303-0247 J 7 distance=91' 05296-0135 CVS 65AB distance=91' 05296-0135 CVS 65AC distance=91' 05280-0110 CVS1003 distance=92' 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 Algjebba 05245-0224 MCA 18 Aa,Ab 138 0.0 1
Show Algjebba 05245-0224 DA 5 AB 79 1.8 1
Show Algjebba 05245-0224 H 6 67 AC 51 114.3 1
Show 05247-0230 BU 556 244 0.8 7
Show 05235-0202 BAL 39 297 3.6 25
Show 05262-0223 TOB9005 314 2.9 26
Show 05261-0216 BU 1396 20 4.3 27
Show 05250-0249 H 6 68 AB 282 135.6 27
Show 05250-0249 BAG 42 Aa,Ab 263 0.1 27
Show 05253-0158 CVS 33 46 2.1 29
Show 05261-0209 CVS 840 199 0.2 29
Show 05256-0255 SKF2216 70 2.4 36
Show 05263-0220 DOO 33 238 7.2 43
Show 05217-0203 STF 693 11 3.5 47
Show 05245-0135 CVR 456 81 10.4 50
Show 05253-0126 J 327 285 4.1 58
Show 05239-0123 J 326 249 3.2 62
Show 05282-0156 HJ 702 149 24.2 63
Show 05203-0241 A 2804 71 1.2 65
Show 05277-0137 BAL 306 207 17.9 67
Show 05205-0301 RST4273 39 0.7 70
Show 05275-0129 J 328 147 2.2 72
Show 05258-0115 CVS 806 19.4 73
Show 05291-0201 D 8 CD 352 17.1 73
Show 05291-0201 D 8 AB 48 5.7 74
Show 05291-0201 D 8 AC 294 101.7 74
Show 05273-0123 CVS 938 AB 358 11.7 75
Show 05273-0123 CVS 938 AC 289 13.2 75
Show 05282-0131 DAM 749 321 11.9 77
Show 05289-0146 A 849 111 0.7 77
Show 05281-0128 CVS1020 14 12.8 79
Show 05276-0121 CVS 969 74 11.0 79
Show 05260-0108 CVS 832 158 16.3 80
Show 05284-0129 CVS 52 169 7.4 81
Show 05194-0303 DAM1331 128 3.4 86
Show 05289-0318 DA 6 298 0.2 87
Show 05285-0122 CVS1055 35 6.0 87
Show 05290-0128 CVS1122 AB 336 5.6 89
Show 05290-0128 CVS1122 AC 126 5.9 89
Show 05192-0304 A 53 AB 294 1.7 89
Show 05192-0304 A 53 AC 202 228.7 89
Show 05192-0304 LSC 134 AD 288 1.9 89
Show 05192-0304 A 53 Ba,Bb 223 0.4 89
Show 05284-0330 BUP 80 206 40.9 89
Show 05291-0128 CVS1129 95 2.7 89
Show 05295-0135 CVS1168 219 16.7 90
Show 05278-0109 CVS 991 232 15.2 90
Show 05303-0247 J 7 214 1.9 91
Show 05296-0135 CVS 65 AB 155 1.5 91
Show 05296-0135 CVS 65 AC 29 8.2 91
Show 05280-0110 CVS1003 93 6.0 92

 
 
WDS 05245-0224 : COMPONENTS
 
 
  A Ab B
Ab pa=138.3°
sep=0.03"
 
B pa=79.0°
sep=1.80"
pa=78.2°
sep=1.78"
 
C pa=51.4°
sep=114.24"
pa=51.4°
sep=114.24"
pa=51.0°
sep=112.65"
 
 
05245-0224 A
 
 
Common name Algjebba Meaning before Coord arcsec 2000 052428.73-022349.3 Mag 3.56
Spectral class B1V (blue-white) PmRA 3.00 PmDE -2.0 SAO 132071
HIP 25281 Tycho2 4757-01588-1 HD 35411 HR 1788
GC 6655 BD BD-02 1235 Bayer Eta Orionis Bayer name Eta
Flamsteed 28 Orionis Flamsteed name 28 Ori
Tycho2
Tycho2 4757-01588-1 Pflag X RAmdeg DEmdeg
PmRA PmDE E RAmdeg E DEmdeg
E pmRA E pmDE EpRAm EpDEm
Num Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 3.367 E BTmag 0.014 VTmag 3.564
E VTmag 0.009 Prox 17 TYC T HIP 25281
CCDM A RAdeg 81.11923861 DEdeg -2.39713694 EpRA 1990 1.83
EpDE 1990 1.73 E RAdeg 3.2 E DEdeg 3.4 Posflg D
Corr -0.1
SAO
SAO 132071 DelFlag RA1950 PmRA1950 -0.0002
DE1950 PmDE1950 0.001 Vmag 3.4 SpType B1
Double code Source 71 CatNum 200 DM BD-02 1235
DMcomp BDsup HD 35411 M HD 0
GC 6655 RA1950rad 1.40482102 DE1950rad -0.04261309 PmRA2000 0.0001
PmDE2000 0
Hipparcos
Catalog H HIP 25281 Proxy H RAhms 05 24 28.62
DEdms -02 23 49.7 Vmag 3.35 VarFlag 2 R Vmag G
RAdeg 81.1192 DEdeg -2.39714 AstroRef A Plx 3.62
CCDM 05245-0223 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 78 Rho 1.695 HD 35411 BD BD-02 1235
CD CP Dm number -02 1235 VIred -0.16
SpType B1V + B2 R SpType Coord arcsec 2000 052428.62-022349.7
Hipparcos 2
HIP 25281 Sn 15 So 3 Nc 2
RArad 1.415797791 DErad -0.0418379705 Plx 3.34 PmRA -0.71
PmDE -3.46 E RArad 0.87 E DErad 0.69 E Plx 1.07
E pmRA 1.13 E pmDE 0.85 Hpmag 3.2919 E Hpmag 0.0059
SHp 0.061 VA 1 BV -0.24 E BV 0.16
VI -0.16
 
 
05245-0224 Ab
 
 
Coord arcsec 2000 052428.73-022349.3 Mag 5.3 Spectral class B2e (blue-white) Calc delta mag 1.7
Calc coord yes
 
 
05245-0224 B
 
 
Coord arcsec 2000 052428.85-022349.0 Mag 4.87 Spectral class B2e (blue-white) PmRA -1.00
PmDE -3.0 Calc delta mag 1.27 Calc coord yes
 
 
05245-0224 C
 
 
Coord arcsec 2000 052434.69-022238.0 Mag 10.99 Spectral class B2e (blue-white) PmRA -1.00
PmDE 3.0 Calc delta mag 7.39 Calc coord yes