19406+6240 STF2574

 
 
19h 40m 34.80s +62 39' 53.4" P.A. 96.8 sep 0.54 mag 7.73,8.91 Sp F8V dist. 128.53 pc (419.26 l.y.)
 
 
Coord 2000
19406+6240
Discov num
STF2574
Comp
Coord arcsec 2000
19 40 34.80 +62 39 53.4
Date first
1831
Date last
2016
Obs
96
Pa first
314
Pa last
94
P.A. Now (θ)
96.8°
Sep first
1.5
Sep last
0.6
Sep. Now (ρ)
0.54"
Mag pri
7.73
Mag sec
8.91
delta mag (ΔM)
1.18
Spectral class
F8V (yellow-white)
Pri motion ra
+026
Sec motion ra
+026
Pri motion dec
+111
Sec motion dec
+111
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
94.1
Precise sep
0.588
Cdsa2 id
STF 2574
Constellation
Draco
HIP
96796
Tycho2
4234-01631-1
HD
186453
ADS
12803
Ra deg
19.676333333333336
De deg
62.664833333333334
Distance
128.53
Distance ly
419.26
last precise pa
94.1
last precise sep
0.588
 
 
ORBITAL ELEMENTS
 
 
Period (P)685.13y Periastron (T)2057.26y Semi-major axis (a)1.302a
Eccentricity (e)0.67 Inclination (i)78.9° Longitude of periastron (ω)48.2°
Node (Ω)107.6° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1999
label rho theta
2000 0.467 87.8
2001 0.472 88.4
2002 0.477 89.0
2003 0.481 89.5
2004 0.486 90.1
2005 0.491 90.6
2006 0.495 91.1
2007 0.499 91.7
2008 0.503 92.2
2009 0.507 92.7
2010 0.511 93.2
2011 0.515 93.6
2012 0.519 94.1
2013 0.522 94.6
2014 0.526 95.0
2015 0.529 95.5
2016 0.532 96.0
2017 0.535 96.4
2018 0.538 96.8
2019 0.540 97.3
2020 0.542 97.7
2021 0.544 98.1
2022 0.546 98.6
2023 0.547 99.0
2024 0.549 99.4
2025 0.549 99.8
2026 0.550 100.3
2027 0.550 100.7
2028 0.550 101.1
2029 0.550 101.5
2030 0.549 102.0

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

grafico orbita





wds19406%2B6240a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
19406+6240 STF2574 1999 91 88 0.5 7.73 8.91 F8V D 194034.80+623953.4
19406+6240 STF2574 2007 93 88 0.5 7.73 8.91 F8V OD 194034.80+623953.4
19406+6240 STF2574 2009 94 90 0.5 7.73 8.91 F8V OD 194034.80+623953.4
19406+6240 STF2574 2016 96 94 0.6 7.73 8.91 F8V O 194034.80+623953.4

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