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Doubles in session


Current system
19525+0100
EVS 2 AB
Eta Aql


Nearby doubles
11' : 19521+0051
J 497

22' : 19521+0041
J 828

22' : 19525+0039
STF2589

35' : 19510+0126
BAL1531

43' : 19552-0051
BU 830

43' : 19499+0041
RST5466

43' : 19497+0108
GWP2898AB

46' : 19510-0021
GWP2902

49' : 19508-0019
GWP2900

51' : 19548-0025
J 2698

56' : 19552-0023
J 2563

63' : 19542+0157
HZG 14AB

63' : 19527+0202
BAL1534

65' : 19518+0204
BAL1533

67' : 19527+0207
BAL1535

68' : 19501-0002
GWP2899

72' : 19486+0141
BAL1529AB

74' : 19476+0105
ENG 67AB

77' : 19518+0216
BAL2009

77' : 19561+0007
BAL 916

79' : 19574+0128
J 1870

83' : 19483+0007
J 2697

83' : 19563+0001
BAL 917

86' : 19568+0155
A 2391AB

90' : 19571+0003
GWP2912

91' : 19583-0037
J 1386



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.
 
 
WDS 19525+0100 EVS 2 AB (Eta Aql) : NOTES
 
 
discov_num notes refcode
EVS 2 1975.402: oblate correlation peak Bla1977a
Primary is Cepheid eta Aql.
Masses are 5.7 and 2.3 Msun. Estimated period = 866y,
a = 200au = 0.73". Evs2013
NPOI Limb-darkened diameter 1.73 +/- 0.05 mas, NOI1999
R = 66. +/- 22. \rsun.
NPOI Limb-darkened diameter 1.69 +/- 0.04 mas. NOI2001a
NPOI Limb-darkened diameter 1.804 +/- 0.007 mas, Sp = G0III, NOI2018
Teff = 6329 +/-126 K, M = 4.24 +/- 0.58 \msun, Age = 0.15 +/- 0.05 Gyr.
 
 
REFERENCES
 
 
refcode metd author reference
Bla1977a S j Blazit, A., Bonneau, D., Koechlin, L. & Labeyrie, A. 1977ApJ...214L..79B
Bla1977a ApJ 214, L79, 1977
Evs2013 Hp j Evans, N.R., Bond, H.E., Schaefer, G.H., Mason, B.D., Karovska, M., & Tingle, E. 2013AJ....146...93E
Evs2013 +X AJ 146, 93, 2013
NOI1999 not j Nordgren, T.E., Germain, M.E., Benson, J.A., Mozurkewich, D., Sudol, J.J., Elias, 1999AJ....118.3032N
NOI1999 II, N.M., Hajian, A.R., White, N.M., Hutter, D.J., Johnston, K.J., Gauss, F.S., .
NOI1999 Armstrong, J.T., Pauls, T.A. & Rickard, L.J. .
NOI1999 AJ 118, 3032, 1999 .
NOI2001a not j Armstrong, J.T., Nordgren, T.E., Germain, M.E., Hajian, A.R., Hindsley, R.B., 2001AJ....121..476A
NOI2001a Hummel, C.A., Mozurkewich, D. & Thessin, R.N. .
NOI2001a AJ 121, 476, 2001 .
NOI2018 not j Baines, E.K., Armstrong, J.T., Schmitt, H.R., Zavala, R.T., Benson, J.A., Hutter, 2018AJ....155...30B
NOI2018 D.J., Tycner, C. & van Belle, G.T.
NOI2018 AJ 155, 30, 2018
 
 
DISCOVERER
 
 
idgroup discov author
1 KRV Kervella, P., Thevenin, F., & Petr-Gotzens, M.G.
10 KRV Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A.,
10 KRV Proto, Y., Karczmarek, P., Nardetto, N., Gieren, W. & Pietrzynski, G.
11 KRV Kervella, P., Gallenne, A., Evans, N.R., Szabados, L., Arenouu, F., Merand, A.,
11 KRV Nardetto, N., Gieren, W. & Pietrzynski, G.
13 KRV Kervella, P., Borgniet, S., de Souza, A.D., Merand, A., Gallenne, A., Rivinius, T.,
13 KRV Lacour, S., Carciofi, A., Faes, D.M., Le Bouquin, J.-B., Taormina, M., Pilecki, B.,
13 KRV Berger, J.-P., Bendjoya, P., Klement, R., Millour, F., Janot-Pacheco, E., Spang, A.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19525+0100 EVS 2 AB 2012 1 93 0.7 1.79 9.18 F6Iab+B9V N K 195228.36+010020.4

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