18596+1504 ENG 65 AB (Deneb el okab)

 
 
18h 59m 37.39s +15° 04' 06.5" P.A. 184.00 sep 122.0 mag 4.13,10.56 Sp K1-III dist. 47.51 pc (154.98 l.y.)
 
 
Coord 2000 18596+1504 Discov num ENG  65 Comp AB Coord arcsec 2000 18 59 37.39 +15 04 06.5
Date first 1887 Date last 2014 Obs 16
Pa first 187 Pa last 183.8 P.A. Now (θ) 183.8°
Sep first 132.4 Sep last 122.003 Sep. Now (ρ) 122.003"
Mag pri 4.13 Mag sec 10.56 delta mag (ΔM) 6.43 Spectral class K1-III (yellow-orange)
Pri motion ra -051 Sec motion ra +002
Pri motion dec -069 Sec motion dec +002
Notes N S (See Notes, Parallax indidates non-physical)
rPM=1.033
This double is not physical.
 
 
18596+1504 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Deneb el okab 104318 18 59 37 +15 04 06 ENG 65 AB 2014 16 184 122.0 4.13 10.56 6.43 Y <===
Show 104318 18 59 37 +15 04 06 ENG 65 AC 2014 12 159 142.9 4.13 11.25 7.12
Show 18 59 37 +15 02 02 ENG 65 BC 2015 17 102 59.8 10.56 11.25 0.69
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Deneb el okab Constellation Aquila SAO 104318 HIP 93244
Tycho2 1585-02531-1 Gaia DR2 4506929502664775680 HD 176411 HR 7176
GC 26091 BD BD+14 3736 Bayer Epsilon Aquilae Bayer name Eps Aql
Flamsteed 13 Aquilae Flamsteed name 13 Aql FK5 712 Distance 47.51
Distance ly 154.98 Bayer greek ε Aql
Other names Deneb el Okab Borealis
 
 
ORBITAL ELEMENTS
 
 
Period (P)1270.6d (3.48y) Periastron (T)41718.5d (1973.097y) Semi-major axis (a)12.8m± 0.44
Eccentricity (e)0.27 Inclination (i)87.5°± 6.6 Longitude of periastron (ω)82°
Node (Ω)58.7°± 3.9 Notesn ReferenceJnc2005
Equinox Last observation1992 Grade9(1=Definitive, 9=Indet.)
label theta rho
2000-01-01 56.4 0.010
2001-01-01 214.5 0.001
2002-01-01 240.6 0.012
2003-01-01 47.9 0.004
2004-01-01 59.3 0.011
2005-01-01 238.4 0.012
2006-01-01 246.8 0.005
2007-01-01 56.7 0.011
2008-01-01 228.3 0.002
2009-01-01 240.9 0.011
2010-01-01 49.9 0.004
2011-01-01 59.6 0.010
2012-01-01 238.7 0.012
2013-01-01 248.4 0.004
2014-01-01 56.9 0.011
2015-01-01 232.2 0.003
2016-01-01 241.1 0.011
2017-01-01 51.3 0.005
2018-01-01 59.9 0.009
2019-01-01 238.9 0.013
2020-01-01 250.5 0.003
2021-01-01 57.2 0.011
2022-01-01 234.1 0.005
2023-01-01 241.4 0.010
2024-01-01 52.3 0.006
2025-01-01 60.3 0.009
2026-01-01 239.0 0.013
2027-01-01 253.9 0.003
2028-01-01 57.4 0.012
2029-01-01 235.2 0.006
2030-01-01 241.7 0.010


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



 
 


wds18596%2B1504s.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS 18596+1504 ENG 65 AB (Deneb el okab) : NOTES
 
 
discov_num notes refcode
ENG 65 13 Aql = eps Aql. A is a spectroscopic binary.
Spectral type K1IIICN0.5Ba0.2.
eps Aql Hipparcos astrometric solution adopted some elements from the orbit of HIP1997d
Griffin (1982). Grf1982c
 
 
REFERENCES
 
 
refcode metd author reference
Grf1982c orb - Griffin, R.F. 1982Obs...102...82G
Grf1982c Observatory 102, 82, 1982
HIP1997d orb - Hipparcos 1997yCat.1239....0E
HIP1997d Hipparcos Catalog, ESA SP-1200, 1997
HIP1997d (DMSA/O Orbital Solutions)
Jnc2005 orb - Jancart, S., Jorrisen, A., Babusiaux, C., & Pourbaix, D. 2005A&A...442..365J
Jnc2005 A&A 442, 365, 2005
 
 
DISCOVERER
 
 
idgroup discov author
1 ENG changed from EN to ENG and that for Engelhardt from ENG to ENH. This has led to
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
18596+1504 ENG 65 AB 2000 11 184 124.0 4.13 10.56 N D 185937.39+150406.5
18596+1504 ENG 65 AB 2010 12 184 123.4 4.13 10.56 N D 185937.39+150406.5
18596+1504 ENG 65 AB 2012 15 185 123.4 4.13 10.56 K1-III N 185937.39+150406.5
18596+1504 ENG 65 AB 2014 16 184 122.0 4.13 10.56 K1-III N 185937.39+150406.5

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

 
 
WDS 18596+1504 ENG 65 AB (Deneb el okab) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 18596+1504 ENG 65 AB (Deneb el okab) : MEASURES
 
 
No records found.

 
 
WDS 18596+1504 (Deneb el okab) : VIRTUAL EYEPIECE
 
 

18596+1504 ENG  65A mag 4.13 Sp K1 18596+1504 ENG  65B sep 124.8 P.A. 184.40 mag 10.56 18596+1504 ENG  65C sep 142.3 P.A. 160.00 mag 11.25 Sp III virtual eyepiece
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Radius:
Components only
 
 
WDS 18596+1504 (Deneb el okab) : ALADIN DSS IMAGE @ 18h 59m 37.39s +15° 04' 06.5"
 
 
 
 
WDS 18596+1504 ENG 65 AB (Deneb el okab) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


18596+1504  ENG  65AB (Deneb el okab) distance=0' 18596+1504  ENG  65BC distance=3' 18595+1504  WRD   2AB distance=5' 18595+1504  WRD   2AC distance=5' 18599+1454  STF2428AB distance=11' 18599+1454  WAL 100AC distance=11' 18584+1459  BPM 913 distance=18' 18586+1514  BPM 915 distance=19' 19010+1507  BPM 925 distance=20' 18585+1523  OL  190 distance=21' 18585+1518  TDT1157Aa,Ab distance=22' 18585+1518  AG  368AB distance=22' 19005+1445  HEI 265 distance=23' 18577+1509  OL  180 distance=29' 18574+1517  BPM 905 distance=34' 19007+1431  BPM 923 distance=37' 18574+1445  KPP2586 distance=38' 18572+1450  HU  676 distance=38' 18585+1429  BPM 914 distance=39' 18590+1542  BPM 917 distance=40' 18568+1505  BPM 900 distance=41' 18595+1420  BPMA 74 distance=45' 18580+1543  BPM 910 distance=46' 19016+1429  BPM 927 distance=46' 19024+1535  BPM 932 distance=51' 19021+1426  HO   93AB distance=53' 19021+1426  HO   93AC distance=53' 18576+1420  BPM 906AB distance=53' 18576+1420  BPM 907BC distance=54' 19035+1500  BPM 943 distance=56' 18563+1435  BPM 896 distance=57' 18569+1546  L    42 distance=58' 19018+1554  BPM 928 distance=59' 18566+1545  BPM 898 distance=61' 19040+1514  KPP 728 distance=65' 19028+1417  BPM 936 distance=66' 19039+1527  BPM 946 distance=66' 19041+1447  STF2443 distance=67' 18551+1522  BPMA 68 distance=68' 18565+1555  J  1278AB distance=69' 18565+1555  J  1278AC distance=69' 19042+1529  J  1839 distance=71' 18597+1615  TOK 622AB distance=72' 18597+1615  TOK 622AC distance=72' 18597+1615  SOZ  25AD distance=72' 19002+1353  BPM 921 distance=72' 19035+1549  BPM 944 distance=73' 18582+1614  RAO 403 distance=73' 18551+1537  BPM 887 distance=74' 18556+1413  BPM 889 distance=78' 18555+1413  BPM 888 distance=79' grafico limitrofi
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Pass over with the mouse cursor to display the catalog designation.

Show name coord_2000 discov# comp pa sep dist(')
Show Deneb el okab 18596+1504 ENG 65 AB 184 122.0
Show Deneb el okab 18596+1504 ENG 65 AC 159 142.9
Show 18596+1504 ENG 65 BC 102 59.8 3
Show 18595+1504 WRD 2 AB 251 9.3 5
Show 18595+1504 WRD 2 AC 100 22.3 5
Show 18599+1454 STF2428 AB 287 6.9 11
Show 18599+1454 WAL 100 AC 14 62.2 11
Show 18584+1459 BPM 913 18 115.5 18
Show 18586+1514 BPM 915 20 105.2 19
Show 19010+1507 BPM 925 201 108.5 20
Show 18585+1523 OL 190 295 3.3 21
Show 18585+1518 TDT1157 Aa,Ab 232 0.4 22
Show 18585+1518 AG 368 AB 318 17.3 22
Show 19005+1445 HEI 265 45 0.3 23
Show 18577+1509 OL 180 47 2.2 29
Show 18574+1517 BPM 905 37 112.1 34
Show 19007+1431 BPM 923 184 107.3 37
Show 18574+1445 KPP2586 286 23.4 38
Show 18572+1450 HU 676 79 1.2 38
Show 18585+1429 BPM 914 32 60.4 39
Show 18590+1542 BPM 917 221 99.4 40
Show 18568+1505 BPM 900 256 105.4 41
Show 18595+1420 BPMA 74 49 165.5 45
Show 18580+1543 BPM 910 205 62.8 46
Show 19016+1429 BPM 927 274 114.8 46
Show 19024+1535 BPM 932 70 89.7 51
Show 19021+1426 HO 93 AB 328 1.1 53
Show 19021+1426 HO 93 AC 210 39.9 53
Show 18576+1420 BPM 906 AB 153 90.0 53
Show 18576+1420 BPM 907 BC 218 108.7 54
Show 19035+1500 BPM 943 274 48.8 56
Show 18563+1435 BPM 896 31 99.8 57
Show 18569+1546 L 42 35 1.8 58
Show 19018+1554 BPM 928 306 103.8 59
Show 18566+1545 BPM 898 20 61.1 61
Show 19040+1514 KPP 728 170 6.4 65
Show 19028+1417 BPM 936 156 95.6 66
Show 19039+1527 BPM 946 311 71.5 66
Show 19041+1447 STF2443 311 6.8 67
Show 18551+1522 BPMA 68 245 229.1 68
Show 18565+1555 J 1278 AB 98 2.3 69
Show 18565+1555 J 1278 AC 106 26.2 69
Show 19042+1529 J 1839 25 8.2 71
Show 18597+1615 TOK 622 AB 267 999.9 72
Show 18597+1615 TOK 622 AC 218 999.9 72
Show 18597+1615 SOZ 25 AD 208 18.4 72
Show 19002+1353 BPM 921 33 116.8 72
Show 19035+1549 BPM 944 315 74.5 73
Show 18582+1614 RAO 403 168 0.4 73
Show 18551+1537 BPM 887 40 68.2 74
Show 18556+1413 BPM 889 300 117.0 78

 
 
WDS 18596+1504 : COMPONENTS
 
 
  A B
B pa=184.4°
sep=124.77"
 
C pa=160.0°
sep=142.33"
pa=99.1°
sep=59.09"
 
 
18596+1504 A
 
 
Common name Deneb el okab Other names Deneb el Okab Borealis Coord arcsec 2000 185937.39+150406.5 Mag 4.13
Spectral class K1 (yellow-orange) PmRA -51.00 PmDE -69.0 SAO 104318
HIP 93244 Tycho2 1585-02531-1 HD 176411 HR 7176
GC 26091 BD BD+14 3736 Bayer Epsilon Aquilae Bayer name Eps Aql
Flamsteed 13 Aquilae Flamsteed name 13 Aql FK5 712
Tycho2
Tycho2 1585-02531-1 Pflag RAmdeg 284.90565846 DEmdeg 15.06829720
PmRA -51.3 PmDE -74.1 E RAmdeg 3 E DEmdeg 4
E pmRA 0.5 E pmDE 0.5 EpRAm 1990.94 EpDEm 1990.35
Num 24 Q RAmdeg 1.3 Q DEmdeg 1.2 Q pmRA 1.4
Q pmDE 1.2 BTmag 5.383 E BTmag 0.014 VTmag 4.129
E VTmag 0.009 Prox 999 TYC T HIP 93244
CCDM RAdeg 284.90577944 DEdeg 15.06846917 EpRA 1990 1.75
EpDE 1990 1.66 E RAdeg 3.3 E DEdeg 3.5 Posflg
Corr 0.0
SAO
SAO 104318 DelFlag RA1950 PmRA1950 -0.0036
DE1950 PmDE1950 -0.073 Vmag 4.2 SpType K0
Double code Source 74 CatNum 712 DM BD+14 3736
DMcomp BDsup HD 176411 M HD 0
GC 26091 RA1950rad 4.96263419 DE1950rad 0.26178198 PmRA2000 -0.0035
PmDE2000 -0.074
Hipparcos
Catalog H HIP 93244 Proxy RAhms 18 59 37.39
DEdms +15 04 06.5 Vmag 4.02 VarFlag R Vmag G
RAdeg 284.906 DEdeg 15.0685 AstroRef + Plx 21.22
CCDM 18596+1503 N CCDM I Nsys 1 Ncomp 1
MultFlag O Source Qual M HIP
Theta Rho HD 176411 BD BD+14 3736
CD CP Dm number +14 3736 VIred 1
SpType K2III R SpType Coord arcsec 2000 185937.39+150406.5
Hipparcos 2
HIP 93244 Sn 75 So 4 Nc 1
RArad 4.9725440772 DErad 0.2629945516 Plx 21.05 PmRA -50.75
PmDE -72.36 E RArad 0.63 E DErad 0.48 E Plx 0.7
E pmRA 0.9 E pmDE 0.61 Hpmag 4.184 E Hpmag 0.001
SHp 0.006 VA 0 BV 1.082 E BV 0.005
VI 1
 
 
18596+1504 B
 
 
Coord arcsec 2000 185936.73+150202.1 Coord calc 185936.73+150202.1 Mag 10.56 PmRA 2.00
PmDE 2.0 Tycho2 1585-00218-1 Calc delta mag 6.43
Tycho2
Tycho2 1585-00218-1 Pflag RAmdeg 284.90306752 DEmdeg 15.03394430
PmRA 3.0 PmDE 1.1 E RAmdeg 26 E DEmdeg 29
E pmRA 1.5 E pmDE 1.4 EpRAm 1985.22 EpDEm 1982.58
Num 4 Q RAmdeg 1.3 Q DEmdeg 0.9 Q pmRA 1.3
Q pmDE 0.9 BTmag 10.861 E BTmag 0.056 VTmag 10.561
E VTmag 0.060 Prox 598 TYC T HIP
CCDM RAdeg 284.90306472 DEdeg 15.03394722 EpRA 1990 1.77
EpDE 1990 1.68 E RAdeg 32.9 E DEdeg 40.5 Posflg
Corr -0.1
 
 
18596+1504 C
 
 
Coord arcsec 2000 185940.76+150152.8 Mag 11.25 Spectral class III PmRA 2.00
PmDE -12.0 Tycho2 1585-00149-1 Calc delta mag 7.12 Calc coord yes
Tycho2
Tycho2 1585-00149-1 Pflag RAmdeg 284.91993658 DEmdeg 15.03060116
PmRA 6.4 PmDE -20.0 E RAmdeg 78 E DEmdeg 94
E pmRA 2.8 E pmDE 2.8 EpRAm 1982.55 EpDEm 1977.35
Num 2 Q RAmdeg Q DEmdeg Q pmRA
Q pmDE BTmag 12.947 E BTmag 0.358 VTmag 11.253
E VTmag 0.112 Prox 598 TYC HIP
CCDM RAdeg 284.91992167 DEdeg 15.03064722 EpRA 1990 1.79
EpDE 1990 1.69 E RAdeg 82.2 E DEdeg 101.8 Posflg
Corr -0.1