14088+7733 BNU 9 (4 UMi)
14h 08m 51.01s +77° 32' 50.8" P.A. 179.00 sep 0.0 mag 4.82, Sp K3III dist. 140.06 pc (456.88 l.y.)
| Coord 2000 |
14088+7733 |
|
Discov num |
BNU 9 |
|
Comp |
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Coord arcsec 2000 |
14 08 51.01 +77 32 50.8 |
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| Date first |
1984 |
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Date last |
1984 |
|
Obs |
1 |
|
| Pa first |
179 |
|
Pa last |
179 |
|
P.A. Now (θ) |
179° |
|
| Sep first |
0.0 |
|
Sep last |
0.02 |
|
Sep. Now (ρ) |
0.02" |
|
| Mag pri |
4.82 |
|
Mag sec |
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delta mag (ΔM) |
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Spectral class |
K3III (yellow-orange) |
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| Pri motion ra |
-032 |
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Sec motion ra |
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| Pri motion dec |
+034 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
4 UMi |
|
Constellation |
Ursa Minor |
|
SAO |
7958 |
|
HIP |
69112 |
|
| Tycho2 |
4561-02317-1 |
|
Gaia DR2 |
1714135092946125184 |
|
HD |
124547 |
|
HR |
5321 |
|
| GC |
19142 |
|
BD |
BD+78 478 |
|
Flamsteed |
4 Ursae Minoris |
|
Flamsteed name |
4 UMi |
|
| FK5 |
524 |
|
Distance |
140.06 |
|
Distance ly |
456.88 |
|
ORBITAL ELEMENTS
| Period (P) | 605.8d | |
Periastron (T) | 38901.7d (1965.385y) | |
Semi-major axis (a) | 3.4m | ± 0.2 |
| Eccentricity (e) | 0.14 | |
Inclination (i) | 136° | ± 5.1 |
Longitude of periastron (ω) | 311.8° | |
| Node (Ω) | 325.5° | ± 2.8 |
Notes | n | |
Reference | Ren2013 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
80.2 |
0.002 |
| 2001-01-01 |
192.0 |
0.003 |
| 2002-01-01 |
334.5 |
0.003 |
| 2003-01-01 |
143.5 |
0.004 |
| 2004-01-01 |
264.7 |
0.003 |
| 2005-01-01 |
72.0 |
0.002 |
| 2006-01-01 |
187.9 |
0.003 |
| 2007-01-01 |
329.6 |
0.003 |
| 2008-01-01 |
140.3 |
0.004 |
| 2009-01-01 |
258.8 |
0.003 |
| 2010-01-01 |
63.3 |
0.002 |
| 2011-01-01 |
183.9 |
0.003 |
| 2012-01-01 |
325.0 |
0.003 |
| 2013-01-01 |
136.9 |
0.004 |
| 2014-01-01 |
252.8 |
0.003 |
| 2015-01-01 |
54.3 |
0.002 |
| 2016-01-01 |
180.0 |
0.003 |
| 2017-01-01 |
320.4 |
0.003 |
| 2018-01-01 |
133.4 |
0.003 |
| 2019-01-01 |
246.7 |
0.003 |
| 2020-01-01 |
45.1 |
0.002 |
| 2021-01-01 |
176.4 |
0.003 |
| 2022-01-01 |
315.8 |
0.003 |
| 2023-01-01 |
129.7 |
0.003 |
| 2024-01-01 |
240.6 |
0.003 |
| 2025-01-01 |
36.0 |
0.002 |
| 2026-01-01 |
172.9 |
0.004 |
| 2027-01-01 |
311.3 |
0.003 |
| 2028-01-01 |
125.9 |
0.003 |
| 2029-01-01 |
234.5 |
0.003 |
| 2030-01-01 |
27.2 |
0.002 |
|
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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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