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Current system
02549-0709
JNN 21


Nearby doubles
28' : 02556-0733
LDS5403

30' : 02548-0640
GWP 393

41' : 02536-0745
GWP 386

44' : 02559-0751
SKF1942

49' : 02581-0711
SLW 139

50' : 02569-0749
BRT 360

51' : 02552-0800
EGN 2

59' : 02524-0755
RST4215

60' : 02527-0619
TDS2377

68' : 02558-0815
BRT 359

80' : 02590-0746
GRV 996

81' : 02519-0602
KPP3506

82' : 02517-0816
SKF 249

86' : 02593-0615
A 454

89' : 02501-0616
J 1453AB

94' : 02550-0841
GRV 995

101' : 02522-0536
BRT 532

102' : 02516-0540
BRT2284

102' : 03013-0636
GWP 409

104' : 02548-0853
NSC 17

104' : 02535-0851
RST4216

112' : 02484-0614
HDS 365

115' : 02474-0640
RST4213

116' : 03026-0700
TOK 471

116' : 03022-0630
YSC 126

121' : 03027-0741
BU 11



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.

02549-0709 JNN 21

 
 
02h 54m 52.47s -07° 09' 25.5" P.A. 285.00 sep 4.1 mag 13.80,16.30 Sp M3+M5.5
 
 
Coord 2000 02549-0709 Discov num JNN  21 Comp Coord arcsec 2000 02 54 52.47 -07 09 25.5
Date first 1998 Date last 2016 Obs 8
Pa first 288 Pa last 285 P.A. Now (θ) 285°
Sep first 4.1 Sep last 4.148 Sep. Now (ρ) 4.148"
Mag pri 13.80 Mag sec 16.30 delta mag (ΔM) 2.5 Spectral class M3+M5.5 (red/red)
Pri motion ra +004 Sec motion ra
Pri motion dec -010 Sec motion dec
Notes N V (See Notes, Proper motion indicates physical)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Eridanus Gaia DR2 5180499602935806720
 
 
WDS 02549-0709 JNN 21 : NOTES
 
 
discov_num notes refcode
JNN 21 The primary is an SB2 binary with an 11.8 day period (Torres et al.
2002 AJ, 123, 1701). Since the angular confirmed to share a common
proper motion) for the purpose of multiplicity statistics, although it
is really a triple system. To estimate the mass of the primary for the
purpose of deriving the mass ratio to the tertiary component detected
in our images, we adopt the mass ratio of 0.58 derived from the
spectroscopic orbit and use the mass corresponding to an M3 spectral
type for the primary. Jnn2012
 
 
REFERENCES
 
 
refcode metd author reference
Jnn2012 Cl j Janson, M., Hormuth, F., Bergfors, C., Brandner, W., Hippler, S., Daemgen, S., 2012ApJ...754...44J
Jnn2012 +E2 Kudryavtseva, N., Schmalzl, E., Schnupp, C., & Henning, T.
Jnn2012 ApJ 754, 44, 2012 (some recalibrated measures published in Jnn2014b) 2014ApJS..214...17J
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
02549-0709 JNN 21 2010 3 285 4.2 13.80 16.30 M3 M5.5 025452.47-070925.5
02549-0709 JNN 21 2012 5 285 4.1 13.80 16.30 M3 M5.5 NV 025452.47-070925.5
02549-0709 JNN 21 2015 6 285 4.1 13.80 16.30 M3+M5.5 NV 025452.47-070925.5
02549-0709 JNN 21 2016 8 285 4.1 13.80 16.30 M3+M5.5 NV 025452.47-070925.5

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

 
 
WDS 02549-0709 JNN 21 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 02549-0709 JNN 21 : MEASURES
 
 
No records found.

 
 
WDS 02549-0709 : VIRTUAL EYEPIECE
 
 

02549-0709 JNN 21A mag 13.8 Sp M3 02549-0709 JNN 21B sep 4.1 P.A. 285.10 mag 16.3 Sp M5.5 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 02549-0709 : ALADIN DSS IMAGE @ 02h 54m 52.47s -07° 09' 25.5"
 
 
 
 
WDS 02549-0709 JNN 21 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

02549-0709 JNN 21 distance=1' 02556-0733 LDS5403 distance=28' 02548-0640 GWP 393 distance=30' 02536-0745 GWP 386 distance=41' 02559-0751 SKF1942 distance=44' 02581-0711 SLW 139 distance=49' 02569-0749 BRT 360 distance=50' 02552-0800 EGN 2 distance=51' 02524-0755 RST4215 distance=59' 02527-0619 TDS2377 distance=60' 02558-0815 BRT 359 distance=68' 02590-0746 GRV 996 distance=80' 02519-0602 KPP3506 distance=81' 02517-0816 SKF 249 distance=82' 02593-0615 A 454 distance=86' 02501-0616 J 1453AB distance=89' 02501-0616 J 1453AC distance=89' 02550-0841 GRV 995 distance=94' 02522-0536 BRT 532 distance=101' 02516-0540 BRT2284 distance=102' 03013-0636 GWP 409 distance=102' 02548-0853 NSC 17 distance=104' 02535-0851 RST4216 distance=104' 02484-0614 HDS 365 distance=112' 02474-0640 RST4213 distance=115' 03026-0700 TOK 471 distance=116' 03022-0630 YSC 126 distance=116' 03027-0741 BU 11 distance=121' 02526-0914 NSN 248 distance=129' 02475-0601 J 1245 distance=130' 02593-0516 BVD 29 distance=132' 02544-0922 UC 850 distance=133' 02462-0637 LAS 20 distance=134' 03034-0804 LDS5409 distance=138' 02487-0526 UC 819 distance=138' 02462-0619 GWP 365 distance=140' 02457-0630 CVR1112 distance=142' 03001-0908 RST4218 distance=142' 02598-0913 JNN 22 distance=144' 02570-0930 KPP1263 distance=145' 02479-0529 GWP 371 distance=145' 02504-0459 BU 10AB distance=147' 02596-0925 A 455AB distance=153' 02596-0925 HJ 3545AC distance=153' 03038-0542 RST4220 distance=160' 02460-0842 RST4212 distance=162' 02496-0932 GWP 374 distance=163' 03048-0603 GWP 416 distance=163' 03057-0746 RST4222 distance=166' 02453-0529 A 453 distance=176' 02440-0601 TOK 75AB distance=176' 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 02549-0709 JNN 21 285 4.1 1
Show 02556-0733 LDS5403 308 48.1 28
Show 02548-0640 GWP 393 350 28.8 30
Show 02536-0745 GWP 386 68 36.4 41
Show 02559-0751 SKF1942 354 11.4 44
Show 02581-0711 SLW 139 299 48.8 49
Show 02569-0749 BRT 360 348 4.1 50
Show 02552-0800 EGN 2 84 10.2 51
Show 02524-0755 RST4215 150 0.2 59
Show 02527-0619 TDS2377 228 2.3 60
Show 02558-0815 BRT 359 346 4.9 68
Show 02590-0746 GRV 996 336 27.8 80
Show 02519-0602 KPP3506 329 1.5 81
Show 02517-0816 SKF 249 21 157.5 82
Show 02593-0615 A 454 131 3.9 86
Show 02501-0616 J 1453 AB 200 9.2 89
Show 02501-0616 J 1453 AC 68 38.4 89
Show 02550-0841 GRV 995 153 25.7 94
Show 02522-0536 BRT 532 84 4.3 101
Show 02516-0540 BRT2284 202 2.5 102
Show 03013-0636 GWP 409 226 59.1 102
Show 02548-0853 NSC 17 15 6.1 104
Show 02535-0851 RST4216 316 7.1 104
Show 02484-0614 HDS 365 244 0.4 112
Show 02474-0640 RST4213 261 0.8 115
Show 03026-0700 TOK 471 122 910.2 116
Show 03022-0630 YSC 126 162 0.0 116
Show 03027-0741 BU 11 63 1.4 121
Show 02526-0914 NSN 248 206 4.4 129
Show 02475-0601 J 1245 12 2.3 130
Show 02593-0516 BVD 29 1 51.7 132
Show 02544-0922 UC 850 109 38.7 133
Show 02462-0637 LAS 20 131 6.7 134
Show 03034-0804 LDS5409 143 171.7 138
Show 02487-0526 UC 819 106 20.2 138
Show 02462-0619 GWP 365 38 60.0 140
Show 02457-0630 CVR1112 301 3.9 142
Show 03001-0908 RST4218 209 2.3 142
Show 02598-0913 JNN 22 321 0.6 144
Show 02570-0930 KPP1263 151 9.7 145
Show 02479-0529 GWP 371 288 28.8 145
Show 02504-0459 BU 10 AB 99 2.8 147
Show 02596-0925 A 455 AB 315 3.4 153
Show 02596-0925 HJ 3545 AC 68 44.2 153
Show 03038-0542 RST4220 339 0.4 160
Show 02460-0842 RST4212 125 1.0 162
Show 02496-0932 GWP 374 110 95.0 163
Show 03048-0603 GWP 416 186 45.2 163
Show 03057-0746 RST4222 218 0.3 166
Show 02453-0529 A 453 93 0.8 176
Show 02440-0601 TOK 75 AB 272 5.6 176

 
 
WDS 02549-0709 : COMPONENTS
 
 
  A
B pa=285.1°
sep=4.12"
 
 
02549-0709 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 025452.47-070925.5 Mag 13.8 Spectral class M3 (red)
PmRA 4.00 PmDE -10.0
 
 
02549-0709 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 025452.20-070924.4 Mag 16.3 Spectral class M5.5 (red)
Calc delta mag 2.5 Calc coord yes