12060+6842 STF 3123 AB
12h 06m 01.37s +68° 41' 55.5" P.A. 190.00 sep 0.3 mag 8.01,7.90 Sp F6V dist. 126.58 pc (412.9 l.y.)
| Coord 2000 |
12060+6842 |
|
Discov num |
STF3123 |
|
Comp |
AB |
|
Coord arcsec 2000 |
12 06 01.37 +68 41 55.5 |
|
| Date first |
1831 |
|
Date last |
2017 |
|
Obs |
146 |
|
| Pa first |
291 |
|
Pa last |
189.9 |
|
P.A. Now (θ) |
182.8° |
|
| Sep first |
0.3 |
|
Sep last |
0.308 |
|
Sep. Now (ρ) |
0.328" |
|
| Mag pri |
8.01 |
|
Mag sec |
7.90 |
|
delta mag (ΔM) |
0.11 |
|
Spectral class |
F6V (yellow-white) |
|
| Pri motion ra |
-015 |
|
Sec motion ra |
|
|
| Pri motion dec |
-030 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
12060+6842 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
15713 |
12 06 01 +68 41 56 |
STF 3123 AB |
2017 |
146 |
190 |
0.3 |
8.01 |
7.90 |
0.11 |
Y |
<=== |
| Show |
|
15713 |
12 06 01 +68 41 56 |
STF 3123 AB,C |
2017 |
7 |
302 |
3.0 |
7.20 |
15.70 |
8.50 |
|
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Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Draco |
|
SAO |
15713 |
|
HIP |
59017 |
|
Tycho2 |
4393-01886-1 |
|
| Gaia DR2 |
1682059349465376640 |
|
HD |
105122 |
|
GC |
16535 |
|
ADS |
8419 |
|
| BD |
BD+69 644 |
|
Distance |
126.58 |
|
Distance ly |
412.9 |
|
ORBITAL ELEMENTS
| Period (P) | 122.3y | ± 1.4 |
Periastron (T) | 1981.49y | ± 0.24 |
Semi-major axis (a) | 0.2959a | ± 0.0042 |
| Eccentricity (e) | 0.4859 | ± 0.0039 |
Inclination (i) | 143.2° | ± 1.4 |
Longitude of periastron (ω) | 303.8° | ± 2.6 |
| Node (Ω) | 284.8° | ± 1.6 |
Notes | n | |
Reference | Hrt1996a | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
235.2 |
0.240 |
| 2001 |
232.2 |
0.244 |
| 2002 |
229.2 |
0.248 |
| 2003 |
226.3 |
0.252 |
| 2004 |
223.5 |
0.256 |
| 2005 |
220.8 |
0.260 |
| 2006 |
218.1 |
0.264 |
| 2007 |
215.6 |
0.268 |
| 2008 |
213.1 |
0.271 |
| 2009 |
210.7 |
0.275 |
| 2010 |
208.3 |
0.279 |
| 2011 |
206.1 |
0.283 |
| 2012 |
203.8 |
0.287 |
| 2013 |
201.7 |
0.291 |
| 2014 |
199.6 |
0.295 |
| 2015 |
197.5 |
0.298 |
| 2016 |
195.5 |
0.302 |
| 2017 |
193.6 |
0.306 |
| 2018 |
191.7 |
0.310 |
| 2019 |
189.8 |
0.313 |
| 2020 |
188.0 |
0.317 |
| 2021 |
186.2 |
0.321 |
| 2022 |
184.5 |
0.324 |
| 2023 |
182.8 |
0.328 |
| 2024 |
181.1 |
0.331 |
| 2025 |
179.5 |
0.335 |
| 2026 |
177.9 |
0.338 |
| 2027 |
176.3 |
0.341 |
| 2028 |
174.8 |
0.345 |
| 2029 |
173.3 |
0.348 |
| 2030 |
171.8 |
0.351 |
|
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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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