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 |
|
Discov num |
STF2128 |
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Comp |
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Coord arcsec 2000 |
17 03 18.66 +59 35 07.3 |
|
| Date first |
1830 |
|
Date last |
2019 |
|
Obs |
72 |
|
| Pa first |
58 |
|
Pa last |
42.4 |
|
P.A. Now (θ) |
42.4° |
|
| Sep first |
11.6 |
|
Sep last |
12.178 |
|
Sep. Now (ρ) |
12.178" |
|
| Mag pri |
8.76 |
|
Mag sec |
10.34 |
|
delta mag (ΔM) |
1.58 |
|
Spectral class |
K4V (yellow-orange) |
|
| Pri motion ra |
-356 |
|
Sec motion ra |
-345 |
|
| Pri motion dec |
+236 |
|
Sec motion dec |
+237 |
|
| Notes |
N
O
V
(See Notes, Orbital solution, Proper motion indicates physical) |
|
rPM=0.026 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 154712 |
|
Constellation |
Draco |
|
SAO |
30220 |
|
HIP |
83451 |
|
| Tycho2 |
3898-01334-1 |
|
HD |
154712 |
|
GC |
23048 |
|
ADS |
10329 |
|
| GL |
Wo 9582A |
|
BD |
BD+59 1783 |
|
Distance |
24.04 |
|
Distance ly |
78.42 |
|
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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