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Current system
19487+1504
A 1658
HD 187283


Nearby doubles
5' : 19485+1508
BPM1622

10' : 19493+1502
BPM1646

15' : 19489+1517
BPMA185

16' : 19482+1518
BPM1612

17' : 19478+1515
BPM1580AB

18' : 19484+1520
BPM1617

18' : 19496+1514
BPM1656

18' : 19494+1517
BPM1648

19' : 19475+1512
TDT1753

19' : 19483+1446
TDT1769

22' : 19500+1457
BPM1673

23' : 19473+1514
BPM1555

24' : 19471+1509
HJ 1436

24' : 19502+1455
BPM1676

25' : 19493+1526
BPM1647

25' : 19497+1523
BPM1662

26' : 19468+1510
OL 106

26' : 19475+1522
BPM1567AB

27' : 19497+1525
TDT1783

27' : 19479+1439
BPM1587

28' : 19483+1530
BPM1615

29' : 19490+1436
BPM1636

29' : 19488+1532
BPM1631

31' : 19493+1532
LOC 3

31' : 19480+1532
BPM1598

32' : 19495+1434
BPM1651



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Neglected List I
Neglected List II
Observed
Herschel, W.
Herschel, J.F.W.
Struve, Otto
Struve, F.G.W.

19487+1504 A 1658 (HD 187283)

 
 
19h 48m 39.64s +15° 03' 32.4" P.A. 54.00 sep 0.2 mag 8.30,8.74 Sp F5V dist. 136.61 pc (445.62 l.y.)
 
 
Coord 2000 19487+1504 Discov num A  1658 Comp Coord arcsec 2000 19 48 39.64 +15 03 32.4
Date first 1907 Date last 2021 Obs 85
Pa first 161 Pa last 54.1 P.A. Now (θ) 40.6°
Sep first 0.2 Sep last 0.233 Sep. Now (ρ) 0.239"
Mag pri 8.30 Mag sec 8.74 delta mag (ΔM) 0.44 Spectral class F5V (yellow-white)
Pri motion ra +044 Sec motion ra
Pri motion dec +012 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 187283 Constellation Aquila SAO 105284 HIP 97469
Tycho2 1615-00730-1 Gaia DR2 4317733994259738752 HD 187283 ADS 12961
BD BD+14 4048 Distance 136.61 Distance ly 445.62
 
 
ORBITAL ELEMENTS
 
 
Period (P)88.86y± 1.2 Periastron (T)1990.76y± 3.5 Semi-major axis (a)0.222a± 0.006
Eccentricity (e)0.07± 0.015 Inclination (i)180°± 5 Longitude of periastron (ω)244.1°± 10
Node (Ω)70.9°± 10 Notesn ReferenceDoc2024b
Equinox2000 Last observation2023 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 144.1 0.210
2001 139.6 0.211
2002 135.2 0.212
2003 130.8 0.213
2004 126.4 0.214
2005 122.0 0.215
2006 117.7 0.216
2007 113.4 0.217
2008 109.2 0.218
2009 105.0 0.219
2010 100.9 0.220
2011 96.8 0.221
2012 92.7 0.222
2013 88.7 0.223
2014 84.7 0.224
2015 80.8 0.225
2016 76.9 0.226
2017 73.0 0.227
2018 69.2 0.228
2019 65.4 0.229
2020 61.6 0.230
2021 57.8 0.231
2022 54.1 0.232
2023 50.4 0.233
2024 46.8 0.233
2025 43.1 0.234
2026 39.5 0.235
2027 35.9 0.235
2028 32.3 0.236
2029 28.7 0.236
2030 25.2 0.237
2031 21.6 0.237
2032 18.1 0.237
2033 14.5 0.237
2034 11.0 0.237
2035 7.5 0.238
2036 3.9 0.238
2037 0.4 0.237
2038 356.9 0.237
2039 353.3 0.237
2040 349.8 0.237
2041 346.2 0.236
2042 342.7 0.236
2043 339.1 0.236
2044 335.5 0.235
2045 331.9 0.234
2046 328.2 0.234
2047 324.6 0.233
2048 320.9 0.232
2049 317.2 0.231
2050 313.4 0.231


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
wds19487%2B1504c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic