13577+5200 A 1614 (HD 121995)
13h 57m 40.26s +51° 59' 37.2" P.A. 299.00 sep 1.4 mag 8.99,9.13 Sp G5 dist. 52.85 pc (172.4 l.y.)
| Coord 2000 |
13577+5200 |
|
Discov num |
A 1614 |
|
Comp |
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Coord arcsec 2000 |
13 57 40.26 +51 59 37.2 |
|
| Date first |
1907 |
|
Date last |
2019 |
|
Obs |
113 |
|
| Pa first |
182 |
|
Pa last |
298.9 |
|
P.A. Now (θ) |
297.4° |
|
| Sep first |
0.3 |
|
Sep last |
1.38 |
|
Sep. Now (ρ) |
1.402" |
|
| Mag pri |
8.99 |
|
Mag sec |
9.13 |
|
delta mag (ΔM) |
0.14 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+236 |
|
Sec motion ra |
+236 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 121995 |
|
Constellation |
Ursa Major |
|
SAO |
28945 |
|
HIP |
68193 |
|
| Tycho2 |
3470-00743-1 |
|
Gaia DR2 |
1512561866743033088 |
|
HD |
121995 |
|
ADS |
9071 |
|
| BD |
BD+52 1757 |
|
Distance |
52.85 |
|
Distance ly |
172.4 |
|
ORBITAL ELEMENTS
| Period (P) | 205y | ± 20 |
Periastron (T) | 1911.6y | ± 2.3 |
Semi-major axis (a) | 0.857a | ± 0.028 |
| Eccentricity (e) | 0.717 | ± 0.025 |
Inclination (i) | 139.5° | ± 9.2 |
Longitude of periastron (ω) | 150° | ± 11 |
| Node (Ω) | 276.8° | ± 5.5 |
Notes | | |
Reference | RAO2015 | |
| Equinox | 2000 | |
Last observation | 2013 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
305.6 |
1.342 |
| 2001 |
305.3 |
1.347 |
| 2002 |
304.9 |
1.352 |
| 2003 |
304.5 |
1.356 |
| 2004 |
304.1 |
1.361 |
| 2005 |
303.8 |
1.365 |
| 2006 |
303.4 |
1.368 |
| 2007 |
303.0 |
1.372 |
| 2008 |
302.7 |
1.375 |
| 2009 |
302.3 |
1.379 |
| 2010 |
302.0 |
1.382 |
| 2011 |
301.6 |
1.384 |
| 2012 |
301.2 |
1.387 |
| 2013 |
300.9 |
1.389 |
| 2014 |
300.5 |
1.392 |
| 2015 |
300.2 |
1.393 |
| 2016 |
299.8 |
1.395 |
| 2017 |
299.5 |
1.397 |
| 2018 |
299.1 |
1.398 |
| 2019 |
298.8 |
1.399 |
| 2020 |
298.4 |
1.400 |
| 2021 |
298.1 |
1.401 |
| 2022 |
297.7 |
1.402 |
| 2023 |
297.4 |
1.402 |
| 2024 |
297.0 |
1.402 |
| 2025 |
296.7 |
1.402 |
| 2026 |
296.3 |
1.401 |
| 2027 |
296.0 |
1.401 |
| 2028 |
295.6 |
1.400 |
| 2029 |
295.3 |
1.399 |
| 2030 |
295.0 |
1.398 |
|
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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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