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Doubles in session


Current system
00247-2653
LEI 1 BC


Nearby doubles
22' : 00257-2654
LDS2120

47' : 00214-2655
TDS1417

49' : 00280-2654
LDS2123

60' : 00291-2701
RST1189

64' : 00209-2746
KPP2669

70' : 00300-2715
COO 2AB

77' : 00291-2619
RST1190

81' : 00303-2741
NSN 44

83' : 00220-2823
RST1185

92' : 00196-2808
LDS 12

96' : 00177-2726
LDS2111

96' : 00185-2757
HJ 1949

103' : 00179-2624
LDS2112

104' : 00319-2750
LDS2134

106' : 00315-2614
TDS1509

107' : 00229-2852
RST1186

108' : 00207-2536
UC 352

109' : 00303-2827
UC 380

114' : 00316-2602
SKF1262

115' : 00167-2749
RST1183

117' : 00296-2845
LDS2130

117' : 00170-2803
RST1184

120' : 00166-2800
DAM 393AB

121' : 00212-2517
TDS 14

122' : 00165-2805
LDS2107

125' : 00281-2512
B 5AB



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.

00247-2653 LEI 1 BC

 
 
00h 24m 44.24s -27° 08' 26.5" P.A. 183.00 sep 0.5 mag 18.69,19.07 Sp M8.5V+M9V
 
 
Coord 2000 00247-2653 Discov num LEI   1 Comp BC Coord arcsec 2000 00 24 44.24 -27 08 26.5
Date first 1993 Date last 2021 Obs 84
Pa first 330 Pa last 183 P.A. Now (θ) 198.4°
Sep first 0.3 Sep last 0.457 Sep. Now (ρ) 0.449"
Mag pri 18.69 Mag sec 19.07 delta mag (ΔM) 0.38 Spectral class M8.5V+M9V (red/red)
Pri motion ra -055 Sec motion ra -055
Pri motion dec +612 Sec motion dec +612
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
00247-2653 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 00 24 44 -27 08 25 HEN 5 Aa,Ab 1998 0 -1 0.1 15.50 18.00 2.50
Show 00 24 44 -27 08 25 LEI 1 AB 2021 70 62 0.9 15.40 18.69 3.29
Show 00 24 44 -27 08 25 LEI 1 AC 2010 3 23 1.5 15.40 19.07 3.67
Show 00 24 44 -27 08 26 LEI 1 BC 2021 84 183 0.5 18.69 19.07 0.38 Y <===
Quadruple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sculptor
 
 
ORBITAL ELEMENTS
 
 
Period (P)17.247y± 0.016 Periastron (T)2006.44y± 0.007 Semi-major axis (a)0.4598a± 0.0007
Eccentricity (e)0.0172± 0.0008 Inclination (i)62.04°± 0.11 Longitude of periastron (ω)202.53°
Node (Ω)14.82°± 0.12 Notesn ReferenceTok2018j
Equinox Last observation2017 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 62.3 0.272
2001 98.8 0.218
2002 139.4 0.249
2003 164.6 0.332
2004 179.7 0.408
2005 190.8 0.449
2006 201.0 0.443
2007 212.8 0.391
2008 229.8 0.308
2009 259.6 0.230
2010 303.0 0.223
2011 335.4 0.295
2012 353.6 0.383
2013 5.5 0.446
2014 15.3 0.467
2015 25.2 0.443
2016 37.3 0.379
2017 55.9 0.293
2018 88.4 0.225
2019 130.6 0.234
2020 159.7 0.310
2021 176.5 0.392
2022 188.2 0.443
2023 198.4 0.449
2024 209.6 0.408
2025 224.8 0.330
2026 250.6 0.246
2027 292.3 0.216
2028 329.0 0.274
2029 349.9 0.362
2030 2.9 0.433


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


 
  


wds00247-2653e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 00247-2653 LEI 1 BC : NOTES
 
 
discov_num notes refcode
LEI 1 Paper includes orbit of BC pair and estimate of mass sum. Lei2001a
HST WFPC2 photometry was also transformed to standard Johnson B and V
and Cousins R and I filters, yielding the following magnitudes for the
A, B, and C components: Lei2000
------ A ----- ------ B ----- ------ C ----- filt
17.17 +/- 0.05 20.57 +/- 0.07 21.48 +/- 0.11 B
15.35 0.04 18.68 0.06 19.07 0.07 V
13.63 0.04 16.30 0.05 16.65 0.05 R
11.66 0.04 14.01 0.05 14.43 0.05 I
Seifahrt et al. (2008) determine mass sum of BC pair to be 0.157 +/- Sef2008
0.009 Msun; mass of A 0.115 +/- 0.010 Msun. They find no sign of the
fourth component reported by Henry et al. (1999). Hen1999
Rajpurohit et al. (2012) derive Teff, log g, radius, luminosity, and Raj2012
spectral type for the components of LHS 1070 using various models.
Mean values (assuming distance = 8.8pc) are:
Teff (K) log g radius (Rsun) log(L/Lsun) spec
A: 2950 5.3 0.136 -2.92 M5.5
B: 2400 5.5 0.102 -3.44 M9.5
C: 2300 5.5 0.099 -3.55 L0
Koehler et al. (2012) derive masses for the A, B, and C components of
0.172+/-0.010, 0.077+/-0.005, and 0.071+/-0.004 Msun, respectively. Koh2012
VLTI Limb-darkened diameter 1.149 +/- 0.11 mas, LTI2003a
M = 0.631 +/- 0.031 \msun, R = 0.702 +/- 0.063 \rsun,
T = 3520 +/- 170 K.
 
 
REFERENCES
 
 
refcode metd author reference
Hen1999 Hf j Henry, T.J., Franz, O.G., Wasserman, L.H., Benedict G.F., Shelus, P.J., 1999ApJ...512..864H
Hen1999 +Xs Ianna, P.A., Kirkpatrick, J.D. & McCarthy, D.W., Jr.
Hen1999 ApJ 512, 864, 1999
Koh2012 orb j Koehler, R., Ratzka, T., & Leinert, Ch. 2012A&A...541A..29K
Koh2012 +A A&A 541, A29, 2012
Koh2012 +Si
Lei2000 Hp j Leinert, Ch., Allard, F., Richichi, A., & Hauschildt, P.H. 2000A&A...353..691L
Lei2000 A&A 353, 691, 2000
Lei2001a Si j Leinert, Ch., Jahreiss, H., Woitas, J., Zucker, S., Mazeh, T., Eckart, A., & 2001A&A...367..183L
Lei2001a +Hf Koehler, R.
Lei2001a +A A&A 367, 183-188, 2001
Lei2001a +orb (measures for AB as quoted in Koh2012)
LTI2003a not j Segransan, D., Kervella, P., Forveille, T. & Queloz, D. 2003A&A...397L...5S
LTI2003a A&AL 397, 5, 2003 .
Raj2012 - Rajpurohit, A.S., Reyle, C., Schultheis, M., Leinert, Ch., Allard, F., 2012A&A...545A..85R
Raj2012 Homeier, D., Ratzka, T., Abraham, P., Moster, B., Witte, S., & Ryde, N.
Raj2012 A&A 545, A85, 2012
Sef2008 orb j Seifahrt, A., Roll, T., Neuhauser, R., Reiners, A., Kerber, F., Kaufl, H., 2008A&A...484..429S
Sef2008 +A Siebenmorgen, R., & Smette, A.
Sef2008 A&A 484, 429, 2008
Tok2018j orb j Tokovinin, A. 2018AJ....155..160T
Tok2018j AJ 155, 160, 2018
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
00247-2653 LEI 1 BC 2007 44 221 0.3 15.30   NOD 002444.24-270826.5
00247-2653 LEI 1 BC 2010 45 308 0.3 15.90 16.30 NOD 002444.24-270826.5
00247-2653 LEI 1 BC 2015 63 30 0.4 18.69 19.07 NO 002444.24-270826.5
00247-2653 LEI 1 BC 2017 65 73 0.2 18.69 19.07 NO 002444.24-270826.5
00247-2653 LEI 1 BC 2018 67 122 0.2 18.69 19.07 NO 002444.24-270826.5
00247-2653 LEI 1 BC 2019 69 160 0.3 18.69 19.07 NO 002444.24-270826.5
00247-2653 LEI 1 BC 2020 70 176 0.4 18.69 19.07 NO 002444.24-270826.5
00247-2653 LEI 1 BC 2021 84 183 0.5 18.69 19.07 NO 002444.24-270826.5

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

 
 
WDS 00247-2653 LEI 1 BC : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 00247-2653 LEI 1 BC : MEASURES
 
 
No records found.

 
 
WDS 00247-2653 : VIRTUAL EYEPIECE
 
 

00247-2653 LEI 1A mag 15.4 Sp M5.5V 00247-2653 HEN 5Ab mag 18 00247-2653 LEI 1B sep 1.5 P.A. 169.90 mag 18.69 Sp M8.5V 00247-2653 LEI 1C sep 1.4 P.A. 21.00 mag 19.07 Sp M9V 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 00247-2653 : ALADIN DSS IMAGE @ 00h 24m 44.24s -27° 08' 26.5"
 
 
 
 
WDS 00247-2653 LEI 1 BC : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

00247-2653 LEI 1BC distance=0' 00247-2653 LEI 1AB distance=1' 00247-2653 LEI 1AC distance=1' 00247-2653 HEN 5Aa,Ab distance=1' 00257-2654 LDS2120 distance=22' 00214-2655 TDS1417 distance=47' 00280-2654 LDS2123 distance=49' 00291-2701 RST1189 distance=60' 00209-2746 KPP2669 distance=64' 00300-2715 COO 2AB distance=70' 00300-2715 SKF1261AB,C distance=70' 00291-2619 RST1190 distance=77' 00303-2741 NSN 44 distance=81' 00220-2823 RST1185 distance=83' 00196-2808 LDS 12 distance=92' 00177-2726 LDS2111 distance=96' 00185-2757 HJ 1949 distance=96' 00179-2624 LDS2112 distance=103' 00319-2750 LDS2134 distance=104' 00315-2614 TDS1509 distance=106' 00229-2852 RST1186 distance=107' 00207-2536 UC 352 distance=108' 00303-2827 UC 380 distance=109' 00316-2602 SKF1262 distance=114' 00167-2749 RST1183 distance=115' 00296-2845 LDS2130 distance=117' 00170-2803 RST1184 distance=117' 00166-2800 DAM 393BC distance=120' 00166-2800 DAM 393AB distance=120' 00212-2517 TDS 14 distance=121' 00165-2805 LDS2107 distance=122' 00281-2512 B 5AB distance=125' 00281-2512 B 5AC distance=125' 00295-2858 LDS2129 distance=127' 00295-2516 LDS2128 distance=131' 00275-2500 LDS2122 distance=135' 00336-2606 HJ 3377 distance=135' 00143-2732 HDS 33 distance=141' 00279-2451 I 702 distance=144' 00327-2522 HJ 3442 distance=151' 00244-2940 UC 360BC distance=152' 00244-2940 SKF 204AB distance=152' 00244-2940 DAM1268Aa,Ab distance=152' 00134-2717 LDS2104 distance=153' 00221-2438 LDS2117 distance=155' 00363-2650 LDS2137 distance=156' 00340-2534 UC 393 distance=157' 00188-2450 RST2238 distance=160' 00288-2438 LDS2126 distance=161' 00367-2725 HJ 3379 distance=161' 00127-2707 BRT2841 distance=162' 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 00247-2653 LEI 1 BC 183 0.5
Show 00247-2653 LEI 1 AB 62 0.9 1
Show 00247-2653 LEI 1 AC 23 1.5 1
Show 00247-2653 HEN 5 Aa,Ab -1 0.1 1
Show 00257-2654 LDS2120 174 4.6 22
Show 00214-2655 TDS1417 263 0.5 47
Show 00280-2654 LDS2123 26 67.9 49
Show 00291-2701 RST1189 49 0.4 60
Show 00209-2746 KPP2669 111 6.9 64
Show 00300-2715 COO 2 AB 250 1.6 70
Show 00300-2715 SKF1261 AB,C 103 29.8 70
Show 00291-2619 RST1190 57 1.1 77
Show 00303-2741 NSN 44 48 4.1 81
Show 00220-2823 RST1185 257 3.5 83
Show 00196-2808 LDS 12 321 9.0 92
Show 00177-2726 LDS2111 118 122.6 96
Show 00185-2757 HJ 1949 324 70.9 96
Show 00179-2624 LDS2112 345 7.9 103
Show 00319-2750 LDS2134 81 35.5 104
Show 00315-2614 TDS1509 92 0.9 106
Show 00229-2852 RST1186 224 0.3 107
Show 00207-2536 UC 352 107 14.8 108
Show 00303-2827 UC 380 247 39.7 109
Show 00316-2602 SKF1262 339 4.6 114
Show 00167-2749 RST1183 69 0.5 115
Show 00296-2845 LDS2130 355 54.0 117
Show 00170-2803 RST1184 61 3.5 117
Show 00166-2800 DAM 393 BC 7 5.3 120
Show 00166-2800 DAM 393 AB 51 6.2 120
Show 00212-2517 TDS 14 307 2.3 121
Show 00165-2805 LDS2107 73 5.8 122
Show 00281-2512 B 5 AB 224 1.3 125
Show 00281-2512 B 5 AC 239 23.2 125
Show 00295-2858 LDS2129 208 29.7 127
Show 00295-2516 LDS2128 56 15.1 131
Show 00275-2500 LDS2122 185 4.1 135
Show 00336-2606 HJ 3377 61 21.4 135
Show 00143-2732 HDS 33 340 0.1 141
Show 00279-2451 I 702 83 1.4 144
Show 00327-2522 HJ 3442 182 17.3 151
Show 00244-2940 UC 360 BC 222 120.2 152
Show 00244-2940 SKF 204 AB 27 8.0 152
Show 00244-2940 DAM1268 Aa,Ab 25 2.7 152
Show 00134-2717 LDS2104 339 75.3 153
Show 00221-2438 LDS2117 330 18.5 155
Show 00363-2650 LDS2137 103 25.1 156
Show 00340-2534 UC 393 110 31.5 157
Show 00188-2450 RST2238 294 2.4 160
Show 00288-2438 LDS2126 193 5.0 161
Show 00367-2725 HJ 3379 232 14.5 161
Show 00127-2707 BRT2841 281 30.3 162

 
 
WDS 00247-2653 : COMPONENTS
 
 
  A Ab B
Ab pa=0.0°
sep=0.00"
 
B pa=169.9°
sep=1.52"
pa=169.9°
sep=1.52"
 
C pa=21.0°
sep=1.44"
pa=21.0°
sep=1.44"
pa=5.0°
sep=2.86"
 
 
00247-2653 A
 
 
Coord arcsec 2000 002444.22-270825.0 Mag 15.4 Spectral class M5.5V (red) PmRA -93.00
PmDE 696.0
 
 
00247-2653 Ab
 
 
Coord arcsec 2000 002444.22-270825.0 Mag 18 Calc delta mag 2.5 Calc coord yes
 
 
00247-2653 B
 
 
Coord arcsec 2000 002444.24-270826.5 Coord calc 002444.24-270826.5 Mag 18.69 Spectral class M8.5V (red)
PmRA -55.00 PmDE 612.0 Calc delta mag 3.19
 
 
00247-2653 C
 
 
Coord arcsec 2000 002444.26-270823.7 Mag 19.07 Spectral class M9V (red) PmRA -55.00
PmDE 612.0 Calc delta mag 3.57 Calc coord yes