17033+5935 STF 2128 (HD 154712)
17h 03m 18.66s +59° 35' 07.3" P.A. 42.00 sep 12.2 mag 8.76,10.34 Sp K4V dist. 24.04 pc (78.42 l.y.)
Coord 2000 |
17033+5935 |
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Discov num |
STF2128 |
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Comp |
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Coord arcsec 2000 |
17 03 18.66 +59 35 07.3 |
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Date first |
1830 |
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Date last |
2019 |
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Obs |
72 |
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Pa first |
58 |
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Pa last |
42.4 |
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P.A. Now (θ) |
42.4° |
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Sep first |
11.6 |
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Sep last |
12.178 |
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Sep. Now (ρ) |
12.178" |
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Mag pri |
8.76 |
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Mag sec |
10.34 |
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delta mag (ΔM) |
1.58 |
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Spectral class |
K4V (yellow-orange) |
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Pri motion ra |
-356 |
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Sec motion ra |
-345 |
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Pri motion dec |
+236 |
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Sec motion dec |
+237 |
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Notes |
N
O
V
(See Notes, Orbital solution, Proper motion indicates physical) |
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rPM=0.026 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 154712 |
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Constellation |
Draco |
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SAO |
30220 |
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HIP |
83451 |
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Tycho2 |
3898-01334-1 |
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HD |
154712 |
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GC |
23048 |
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ADS |
10329 |
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GL |
Wo 9582A |
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BD |
BD+59 1783 |
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Distance |
24.04 |
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Distance ly |
78.42 |
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ORBITAL ELEMENTS
Period (P) | 2294.4944y | ± 871.8519 |
Periastron (T) | 2463.2278y | ± 829.428 |
Semi-major axis (a) | 14.30151a | ± 7.3557 |
Eccentricity (e) | 0.62903 | ± 0.28108 |
Inclination (i) | 112.446° | ± 12.93 |
Longitude of periastron (ω) | 92.278° | ± 25.22 |
Node (Ω) | 20.339° | ± 53.251 |
Notes | n | |
Reference | Izm2019 | |
Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
44.0 |
12.162 |
2001 |
43.9 |
12.163 |
2002 |
43.9 |
12.164 |
2003 |
43.8 |
12.165 |
2004 |
43.7 |
12.166 |
2005 |
43.7 |
12.166 |
2006 |
43.6 |
12.167 |
2007 |
43.5 |
12.168 |
2008 |
43.5 |
12.168 |
2009 |
43.4 |
12.169 |
2010 |
43.3 |
12.169 |
2011 |
43.3 |
12.170 |
2012 |
43.2 |
12.170 |
2013 |
43.1 |
12.170 |
2014 |
43.1 |
12.171 |
2015 |
43.0 |
12.171 |
2016 |
43.0 |
12.171 |
2017 |
42.9 |
12.172 |
2018 |
42.8 |
12.172 |
2019 |
42.8 |
12.172 |
2020 |
42.7 |
12.172 |
2021 |
42.6 |
12.172 |
2022 |
42.6 |
12.172 |
2023 |
42.5 |
12.172 |
2024 |
42.4 |
12.172 |
2025 |
42.4 |
12.172 |
2026 |
42.3 |
12.172 |
2027 |
42.2 |
12.171 |
2028 |
42.2 |
12.171 |
2029 |
42.1 |
12.171 |
2030 |
42.1 |
12.170 |
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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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