14421+6116 STF 1878 (DL Dra)
14h 42m 03.25s +61° 15' 42.9" P.A. 314.00 sep 4.2 mag 6.33,9.16 Sp F4V dist. 40.67 pc (132.67 l.y.)
Coord 2000 |
14421+6116 |
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Discov num |
STF1878 |
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Comp |
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Coord arcsec 2000 |
14 42 03.25 +61 15 42.9 |
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Date first |
1832 |
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Date last |
2019 |
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Obs |
56 |
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Pa first |
336 |
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Pa last |
313.9 |
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P.A. Now (θ) |
313.9° |
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Sep first |
3.1 |
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Sep last |
4.222 |
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Sep. Now (ρ) |
4.222" |
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Mag pri |
6.33 |
|
Mag sec |
9.16 |
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delta mag (ΔM) |
2.83 |
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Spectral class |
F4V (yellow-white) |
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Pri motion ra |
+076 |
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Sec motion ra |
+076 |
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Pri motion dec |
-033 |
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Sec motion dec |
-030 |
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Notes |
N
O
(See Notes, Orbital solution) |
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rPM=0.036 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
DL Dra |
|
Constellation |
Draco |
|
SAO |
16466 |
|
HIP |
71876 |
|
Tycho2 |
4173-01661-1 |
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Gaia DR2 |
1618540425290743936 |
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HD |
129798 |
|
HR |
5492 |
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GC |
19825 |
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ADS |
9357 |
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BD |
BD+61 1451 |
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Distance |
40.67 |
|
Distance ly |
132.67 |
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ORBITAL ELEMENTS
Period (P) | 1555.0249y | ± 597.8532 |
Periastron (T) | 2134.4767y | ± 57.5852 |
Semi-major axis (a) | 7.5181a | ± 3.71934 |
Eccentricity (e) | 0.66919 | ± 0.28095 |
Inclination (i) | 99.47° | ± 6.473 |
Longitude of periastron (ω) | 250.047° | ± 20.946 |
Node (Ω) | 127.92° | ± 6.057 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
316.1 |
4.166 |
2001 |
316.1 |
4.166 |
2002 |
316.0 |
4.166 |
2003 |
315.9 |
4.166 |
2004 |
315.8 |
4.166 |
2005 |
315.7 |
4.165 |
2006 |
315.6 |
4.165 |
2007 |
315.5 |
4.164 |
2008 |
315.4 |
4.163 |
2009 |
315.3 |
4.162 |
2010 |
315.2 |
4.161 |
2011 |
315.1 |
4.159 |
2012 |
315.0 |
4.157 |
2013 |
314.9 |
4.155 |
2014 |
314.9 |
4.153 |
2015 |
314.8 |
4.151 |
2016 |
314.7 |
4.148 |
2017 |
314.6 |
4.146 |
2018 |
314.5 |
4.143 |
2019 |
314.4 |
4.139 |
2020 |
314.3 |
4.136 |
2021 |
314.2 |
4.132 |
2022 |
314.1 |
4.129 |
2023 |
314.0 |
4.124 |
2024 |
313.9 |
4.120 |
2025 |
313.8 |
4.116 |
2026 |
313.7 |
4.111 |
2027 |
313.6 |
4.106 |
2028 |
313.5 |
4.100 |
2029 |
313.4 |
4.095 |
2030 |
313.4 |
4.089 |
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Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
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Measures: green=micrometric, blue=interferometric, purple=photographic |
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