15258+8430 MLR 347 (HD 140625)
15h 25m 47.59s +84° 30' 14.1" P.A. 214.00 sep 0.2 mag 9.52,9.91 Sp K0V dist. 59.99 pc (195.69 l.y.)
| Coord 2000 |
15258+8430 |
|
Discov num |
MLR 347 |
|
Comp |
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Coord arcsec 2000 |
15 25 47.59 +84 30 14.1 |
|
| Date first |
1972 |
|
Date last |
2008 |
|
Obs |
13 |
|
| Pa first |
23 |
|
Pa last |
213.5 |
|
P.A. Now (θ) |
265.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.197 |
|
Sep. Now (ρ) |
0.118" |
|
| Mag pri |
9.52 |
|
Mag sec |
9.91 |
|
delta mag (ΔM) |
0.39 |
|
Spectral class |
K0V (yellow-orange) |
|
| Pri motion ra |
+128 |
|
Sec motion ra |
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|
| Pri motion dec |
-016 |
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Sec motion dec |
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| Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 140625 |
|
Constellation |
Ursa Minor |
|
SAO |
2559 |
|
HIP |
75529 |
|
| Tycho2 |
4638-01028-1 |
|
Gaia DR2 |
1724154117776702848 |
|
HD |
140625 |
|
GC |
20944 |
|
| BD |
BD+84 348 |
|
Distance |
59.99 |
|
Distance ly |
195.69 |
|
ORBITAL ELEMENTS
| Period (P) | 20.19y | |
Periastron (T) | 1979.62y | |
Semi-major axis (a) | 0.131a | |
| Eccentricity (e) | 0.505 | |
Inclination (i) | 158.3° | |
Longitude of periastron (ω) | 23.5° | |
| Node (Ω) | 44.5° | |
Notes | | |
Reference | Msn2017a | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
11.1 |
0.064 |
| 2001 |
316.8 |
0.074 |
| 2002 |
282.8 |
0.098 |
| 2003 |
262.4 |
0.122 |
| 2004 |
248.5 |
0.144 |
| 2005 |
238.0 |
0.161 |
| 2006 |
229.3 |
0.175 |
| 2007 |
221.8 |
0.185 |
| 2008 |
214.9 |
0.192 |
| 2009 |
208.3 |
0.195 |
| 2010 |
201.9 |
0.195 |
| 2011 |
195.3 |
0.192 |
| 2012 |
188.5 |
0.186 |
| 2013 |
181.0 |
0.177 |
| 2014 |
172.7 |
0.165 |
| 2015 |
162.8 |
0.150 |
| 2016 |
150.6 |
0.133 |
| 2017 |
134.3 |
0.113 |
| 2018 |
111.0 |
0.093 |
| 2019 |
75.3 |
0.075 |
| 2020 |
22.5 |
0.064 |
| 2021 |
325.6 |
0.071 |
| 2022 |
287.9 |
0.093 |
| 2023 |
265.6 |
0.118 |
| 2024 |
250.8 |
0.140 |
| 2025 |
239.8 |
0.158 |
| 2026 |
230.9 |
0.173 |
| 2027 |
223.2 |
0.183 |
| 2028 |
216.2 |
0.191 |
| 2029 |
209.6 |
0.194 |
| 2030 |
203.1 |
0.195 |
|
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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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