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Doubles in session


Current system
19449-2338
MTG 4


Nearby doubles
17' : 19437-2335
UC 4013

21' : 19455-2319
B 446AB

34' : 19449-2412
LDS4816

38' : 19422-2339
B 2480

45' : 19417-2338
OCC9189

48' : 19440-2424
LDS4815

54' : 19453-2245
B 2879

59' : 19453-2436
TDS1009

65' : 19404-2320
OCC 802

68' : 19437-2443
KPP3114

70' : 19499-2343
SEE 396

71' : 19398-2326
SEE 389

78' : 19464-2453
SEE 394

78' : 19496-2254
UC 4031

83' : 19404-2244
UC 4002

84' : 19490-2236
DON 969

86' : 19420-2223
HDS2793

87' : 19391-2304
ARA2265

93' : 19506-2427
HJ 2899

94' : 19456-2511
OCC 69AB

95' : 19434-2510
OCC 68

97' : 19458-2513
OCC 67

98' : 19379-2352
J 1764

98' : 19480-2211
DON 968

99' : 19454-2201
DON 966

101' : 19392-2234
UC 3997



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.

19449-2338 MTG 4

 
 
19h 44m 53.80s -23° 37' 59.3" P.A. 313.00 sep 0.2 mag 14.60,15.30 Sp M4.5V
 
 
Coord 2000 19449-2338 Discov num MTG   4 Comp Coord arcsec 2000 19 44 53.80 -23 37 59.3
Date first 2004 Date last 2021 Obs 11
Pa first 355 Pa last 312.9 P.A. Now (θ) 312.9°
Sep first 0.8 Sep last 0.246 Sep. Now (ρ) 0.246"
Mag pri 14.60 Mag sec 15.30 delta mag (ΔM) 0.7 Spectral class M4.5V (red)
Pri motion ra +320 Sec motion ra
Pri motion dec -167 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Sagittarius
 
 
ORBITAL ELEMENTS
 
 
Period (P)60y Periastron (T)2028.24y Semi-major axis (a)0.703a
Eccentricity (e)0.271 Inclination (i)105.1° Longitude of periastron (ω)316°
Node (Ω)168.9° Notes ReferenceTok2021f
Equinox2000 Last observation2021 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 0.3 0.720
2001 358.9 0.747
2002 357.6 0.771
2003 356.4 0.791
2004 355.2 0.807
2005 354.1 0.819
2006 353.0 0.826
2007 351.9 0.829
2008 350.8 0.826
2009 349.7 0.818
2010 348.6 0.805
2011 347.4 0.787
2012 346.2 0.762
2013 344.9 0.732
2014 343.4 0.696
2015 341.8 0.654
2016 339.9 0.605
2017 337.7 0.551
2018 334.9 0.491
2019 331.4 0.426
2020 326.5 0.357
2021 319.2 0.286
2022 307.2 0.217
2023 285.7 0.162
2024 251.9 0.143
2025 220.5 0.173
2026 201.8 0.232
2027 191.1 0.300
2028 184.3 0.365
2029 179.5 0.424
2030 175.8 0.473


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


 
  


wds19449-2338c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic		  
 
 
WDS 19449-2338 MTG 4 : NOTES
 
 
discov_num notes refcode
MTG 4 Also known as LP 869-26.
Parallax = 67.87 +/- 1.10 mas. JLB2017
 
 
REFERENCES
 
 
refcode metd author reference
JLB2017 not - Bartlett, J.L., Lurie, J.C., Riedel, A., Ianna, P.A., Jao, W.-C., Henry, T.J., 2017AJ....154..151B
JLB2017 Winters, J.G., Finch, C.T., & Subasavage, J.P.
JLB2017 AJ 154, 151, 2017
Tok2021f orb - Tokovinin, A. 2021IAUDS.204....1T
Tok2021f Inf. Circ. 204, 1, 2021
 
 
DISCOVERER
 
 
idgroup discov author
1 MTG Montagnier, G., Segransan, D., Beuzit, J.-L., Forveille, T., Delorme, P.,
1 MTG Delfosse, X., Perrier, C., Udry, S., et al.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19449-2338 MTG 4 2005 2 353 0.8 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2010 3 348 0.8 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2014 4 342 0.7 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2015 5 341 0.6 9.00 9.10 K 194453.80-233759.3
19449-2338 MTG 4 2017 6 336 0.5 14.60 15.30 M4.5V NO 194453.80-233759.3
19449-2338 MTG 4 2018 7 334 0.5 14.60 15.30 M4.5V NO 194453.80-233759.3
19449-2338 MTG 4 2019 8 329 0.4 14.60 15.30 M4.5V NO 194453.80-233759.3
19449-2338 MTG 4 2020 9 320 0.3 14.60 15.30 M4.5V NO 194453.80-233759.3
19449-2338 MTG 4 2021 11 313 0.2 14.60 15.30 M4.5V NO 194453.80-233759.3

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

 
 
WDS 19449-2338 MTG 4 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 19449-2338 MTG 4 : MEASURES
 
 
No records found.

 
 
WDS 19449-2338 : VIRTUAL EYEPIECE
 
 

19449-2338 MTG 4A mag 14.6 Sp M4.5V 19449-2338 MTG 4B sep 0.2 P.A. 315.40 mag 15.3 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 19449-2338 : ALADIN DSS IMAGE @ 19h 44m 53.80s -23° 37' 59.3"
 
 
 
 
WDS 19449-2338 MTG 4 : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only

19449-2338 MTG 4 distance=0' 19437-2335 UC 4013 distance=17' 19455-2319 B 446AB distance=21' 19455-2319 B 446AC distance=21' 19449-2412 LDS4816 distance=34' 19422-2339 B 2480 distance=38' 19417-2338 OCC9189 distance=45' 19440-2424 LDS4815 distance=48' 19453-2245 B 2879 distance=54' 19453-2436 TDS1009 distance=59' 19404-2320 OCC 802 distance=65' 19437-2443 KPP3114 distance=68' 19499-2343 SEE 396 distance=70' 19398-2326 SEE 389 distance=71' 19464-2453 SEE 394 distance=78' 19496-2254 UC 4031 distance=78' 19404-2244 UC 4002 distance=83' 19490-2236 DON 969 distance=84' 19420-2223 HDS2793 distance=86' 19391-2304 ARA2265 distance=87' 19506-2427 HJ 2899 distance=93' 19456-2511 OCC 69AB distance=94' 19434-2510 OCC 68 distance=95' 19458-2513 OCC 67 distance=97' 19379-2352 J 1764 distance=98' 19480-2211 DON 968 distance=98' 19454-2201 DON 966 distance=99' 19392-2234 UC 3997 distance=101' 19528-2309 OCC 189 distance=114' 19475-2150 STN 49 distance=115' 19460-2532 HJ 5144 distance=115' 19368-2311 ARA2264 distance=115' 19524-2246 OCC 188 distance=116' 19399-2204 I 656 distance=117' 19460-2142 LDS4817 distance=118' 19439-2535 LDS4814 distance=118' 19399-2517 TDT1617 distance=121' 19537-2327 UC 4047 distance=122' 19542-2339 ARA2267 distance=128' 19465-2131 BU 467 distance=129' 19356-2319 SEE 384 distance=129' 19543-2356 HJ 2904AB distance=131' 19543-2356 ALP 33AC distance=131' 19543-2356 GAA 23Aa,Ab distance=131' 19385-2516 TDT1601 distance=132' 19367-2453 BU 654 distance=135' 19541-2430 B 455 distance=137' 19372-2212 HTS 10AB distance=137' 19372-2212 HTS 10AC distance=137' 19372-2212 HTS 10AD distance=137' 19372-2212 HTS 10AE distance=137' 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 19449-2338 MTG 4 313 0.2
Show 19437-2335 UC 4013 80 18.6 17
Show 19455-2319 B 446 AB 251 3.3 21
Show 19455-2319 B 446 AC 162 29.2 21
Show 19449-2412 LDS4816 151 25.9 34
Show 19422-2339 B 2480 45 9.4 38
Show 19417-2338 OCC9189 -1 0.2 45
Show 19440-2424 LDS4815 121 10.2 48
Show 19453-2245 B 2879 150 13.0 54
Show 19453-2436 TDS1009 248 1.1 59
Show 19404-2320 OCC 802 -1 0.1 65
Show 19437-2443 KPP3114 247 11.7 68
Show 19499-2343 SEE 396 271 6.8 70
Show 19398-2326 SEE 389 330 0.2 71
Show 19464-2453 SEE 394 286 1.2 78
Show 19496-2254 UC 4031 286 25.5 78
Show 19404-2244 UC 4002 282 111.9 83
Show 19490-2236 DON 969 12 1.9 84
Show 19420-2223 HDS2793 181 0.1 86
Show 19391-2304 ARA2265 120 5.7 87
Show 19506-2427 HJ 2899 310 8.2 93
Show 19456-2511 OCC 69 AB -1 0.1 94
Show 19434-2510 OCC 68 -1 0.1 95
Show 19458-2513 OCC 67 -1 0.1 97
Show 19379-2352 J 1764 254 10.4 98
Show 19480-2211 DON 968 232 1.8 98
Show 19454-2201 DON 966 288 3.2 99
Show 19392-2234 UC 3997 255 78.9 101
Show 19528-2309 OCC 189 -1 0.1 114
Show 19475-2150 STN 49 336 1.4 115
Show 19460-2532 HJ 5144 10 10.0 115
Show 19368-2311 ARA2264 27 8.3 115
Show 19524-2246 OCC 188 -1 0.5 116
Show 19399-2204 I 656 11 0.1 117
Show 19460-2142 LDS4817 106 127.9 118
Show 19439-2535 LDS4814 208 13.3 118
Show 19399-2517 TDT1617 56 0.8 121
Show 19537-2327 UC 4047 224 54.9 122
Show 19542-2339 ARA2267 197 12.0 128
Show 19465-2131 BU 467 137 3.7 129
Show 19356-2319 SEE 384 177 4.6 129
Show 19543-2356 HJ 2904 AB 34 45.8 131
Show 19543-2356 ALP 33 AC 108 41.6 131
Show 19543-2356 GAA 23 Aa,Ab 14 0.0 131
Show 19385-2516 TDT1601 93 0.9 132
Show 19367-2453 BU 654 175 2.3 135
Show 19541-2430 B 455 265 2.4 137
Show 19372-2212 HTS 10 AB 77 6.6 137
Show 19372-2212 HTS 10 AC 140 11.6 137
Show 19372-2212 HTS 10 AD 95 13.6 137
Show 19372-2212 HTS 10 AE 212 14.7 137

 
 
WDS 19449-2338 : COMPONENTS
 
 
  A
B pa=315.4°
sep=0.24"
 
 
19449-2338 A
 
 
Componente originario normalizzato AB Coord arcsec 2000 194453.80-233759.3 Mag 14.6 Spectral class M4.5V (red)
PmRA 320.00 PmDE -167.0
 
 
19449-2338 B
 
 
Componente originario normalizzato AB Coord arcsec 2000 194453.79-233759.1 Mag 15.3 Calc delta mag 0.7
Calc coord yes