09252+4606 HDS 1353 (HD 81105)
09h 25m 10.78s +46° 05' 53.6" P.A. 167.00 sep 0.4 mag 9.36,11.49 Sp K5V+M1.5V dist. 25.71 pc (83.87 l.y.)
Coord 2000 |
09252+4606 |
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Discov num |
HDS1353 |
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Comp |
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Coord arcsec 2000 |
09 25 10.78 +46 05 53.6 |
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Date first |
1991 |
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Date last |
2019 |
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Obs |
31 |
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Pa first |
304 |
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Pa last |
166.6 |
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P.A. Now (θ) |
166.6° |
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Sep first |
0.3 |
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Sep last |
0.41 |
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Sep. Now (ρ) |
0.41" |
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Mag pri |
9.36 |
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Mag sec |
11.49 |
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delta mag (ΔM) |
2.13 |
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Spectral class |
K5V+M1.5V (yellow-orange/red) |
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Pri motion ra |
-231 |
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Sec motion ra |
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Pri motion dec |
+020 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 81105 |
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Constellation |
Ursa Major |
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SAO |
42846 |
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HIP |
46199 |
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Tycho2 |
3425-01073-1 |
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Gaia DR2 |
819208081921567232 |
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HD |
81105 |
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BD |
BD+46 1500 |
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Distance |
25.71 |
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Distance ly |
83.87 |
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ORBITAL ELEMENTS
Period (P) | 111.8y | ± 4.8 |
Periastron (T) | 1996.2y | ± 0.2 |
Semi-major axis (a) | 693.7m | ± 20.5 |
Eccentricity (e) | 0.891 | ± 0.008 |
Inclination (i) | 77.8° | ± 0.4 |
Longitude of periastron (ω) | 264.8° | ± 0.5 |
Node (Ω) | 138.6° | ± 0.5 |
Notes | | |
Reference | Mit2020 | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
146.5 |
0.271 |
2001 |
148.4 |
0.298 |
2002 |
149.9 |
0.320 |
2003 |
151.3 |
0.337 |
2004 |
152.5 |
0.351 |
2005 |
153.7 |
0.363 |
2006 |
154.8 |
0.373 |
2007 |
155.9 |
0.381 |
2008 |
156.9 |
0.388 |
2009 |
157.8 |
0.394 |
2010 |
158.8 |
0.399 |
2011 |
159.7 |
0.402 |
2012 |
160.6 |
0.405 |
2013 |
161.5 |
0.408 |
2014 |
162.4 |
0.410 |
2015 |
163.3 |
0.411 |
2016 |
164.2 |
0.411 |
2017 |
165.0 |
0.412 |
2018 |
165.9 |
0.411 |
2019 |
166.8 |
0.411 |
2020 |
167.7 |
0.410 |
2021 |
168.6 |
0.408 |
2022 |
169.5 |
0.407 |
2023 |
170.4 |
0.405 |
2024 |
171.3 |
0.403 |
2025 |
172.2 |
0.400 |
2026 |
173.1 |
0.398 |
2027 |
174.1 |
0.395 |
2028 |
175.0 |
0.392 |
2029 |
176.0 |
0.389 |
2030 |
177.0 |
0.386 |
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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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