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Doubles in session


Current system
16578+1317
HDS 2399


Nearby doubles
29' : 16598+1319
HU 1279

34' : 16575+1352
LDS4709

42' : 16584+1358
YSC 61

44' : 16583+1234
GRV 943

54' : 16567+1408
STT 318

66' : 16594+1419
STT 321

78' : 17015+1412
TDT 182

80' : 16596+1433
GWP2683AB

87' : 16574+1444
A 1142

88' : 17035+1345
TDT 192

88' : 17037+1336
STFA 33AB

93' : 16558+1445
LDS4704

97' : 17044+1330
BPM 674

104' : 17018+1442
CBL 161

105' : 16507+1259
BRT1284

108' : 17032+1431
NSN 686

112' : 16575+1508
BPM 672

112' : 16588+1127
UC 3267

112' : 16581+1509
STT 319

113' : 17051+1353
HDS2417

114' : 17016+1457
H 4 122

115' : 16563+1125
KPP3311

115' : 17024+1146
CVR 194

117' : 17054+1244
H 5 133

120' : 16496+1316
STF2103AB

130' : 17004+1113
GWP2685



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.

16578+1317 HDS 2399

 
 
16h 57m 46.09s +13° 17' 29.2" P.A. 255.00 sep 0.3 mag 10.90,13.09 Sp M0 dist. 40.8 pc (133.09 l.y.)
 
 
Coord 2000 16578+1317 Discov num HDS2399 Comp Coord arcsec 2000 16 57 46.09 +13 17 29.2
Date first 1991 Date last 2023 Obs 14
Pa first 290 Pa last 255.2 P.A. Now (θ) 255.2°
Sep first 0.6 Sep last 0.315 Sep. Now (ρ) 0.315"
Mag pri 10.90 Mag sec 13.09 delta mag (ΔM) 2.19 Spectral class M0 (red)
Pri motion ra +047 Sec motion ra
Pri motion dec +072 Sec motion dec
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Hercules HIP 83010 Tycho2 0987-00811-1 Gaia DR2 4449182460449707904
Distance 40.8 Distance ly 133.09
 
 
ORBITAL ELEMENTS
 
 
Period (P)45.379y Periastron (T)2018.8y Semi-major axis (a)0.384a
Eccentricity (e)0.83 Inclination (i)29.6° Longitude of periastron (ω)100.7°
Node (Ω)14.1° Notesn ReferenceTok2018e
Equinox2000 Last observation2018 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 302.2 0.606
2001 303.8 0.600
2002 305.4 0.593
2003 307.0 0.584
2004 308.7 0.573
2005 310.5 0.560
2006 312.4 0.545
2007 314.3 0.529
2008 316.4 0.510
2009 318.7 0.489
2010 321.2 0.465
2011 324.0 0.439
2012 327.1 0.409
2013 330.8 0.376
2014 335.3 0.338
2015 340.9 0.295
2016 348.8 0.245
2017 1.2 0.184
2018 29.2 0.108
2019 148.2 0.064
2020 212.7 0.138
2021 232.8 0.201
2022 243.9 0.253
2023 251.5 0.297
2024 257.1 0.337
2025 261.6 0.372
2026 265.4 0.403
2027 268.7 0.431
2028 271.6 0.457
2029 274.1 0.480
2030 276.5 0.501
2031 278.7 0.520
2032 280.7 0.537
2033 282.6 0.552
2034 284.4 0.566
2035 286.2 0.577
2036 287.8 0.587
2037 289.5 0.596
2038 291.0 0.602
2039 292.6 0.608
2040 294.1 0.612
2041 295.6 0.614
2042 297.1 0.615
2043 298.6 0.614
2044 300.1 0.612
2045 301.7 0.608
2046 303.2 0.603
2047 304.8 0.596
2048 306.4 0.587
2049 308.1 0.577
2050 309.8 0.565


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds16578%2B1317a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic