20583+4428 RBR 50 (HD 199870)
20h 58m 19.38s +44° 28' 17.5" P.A. 76.00 sep 0.4 mag 5.50,11.00 Sp K0III dist. 79.3 pc (258.68 l.y.)
Coord 2000 |
20583+4428 |
|
Discov num |
RBR 50 |
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Comp |
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Coord arcsec 2000 |
20 58 19.38 +44 28 17.5 |
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Date first |
2003 |
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Date last |
2003 |
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Obs |
1 |
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Pa first |
76 |
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Pa last |
75.6 |
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P.A. Now (θ) |
75.6° |
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Sep first |
0.4 |
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Sep last |
0.41 |
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Sep. Now (ρ) |
0.41" |
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Mag pri |
5.50 |
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Mag sec |
11.00 |
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delta mag (ΔM) |
5.5 |
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Spectral class |
K0III (yellow-orange) |
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Pri motion ra |
+102 |
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Sec motion ra |
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Pri motion dec |
+070 |
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Sec motion dec |
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Notes |
N
(See Notes) |
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Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 199870 |
|
Constellation |
Cygnus |
|
SAO |
50298 |
|
HIP |
103519 |
|
Tycho2 |
3179-00564-1 |
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Gaia DR2 |
2162254491519784192 |
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HD |
199870 |
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HR |
8035 |
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GC |
29274 |
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BD |
BD+43 3777 |
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Distance |
79.3 |
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Distance ly |
258.68 |
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SUSPECTED ORBITAL ELEMENTS
Identifier | 20583+4428 |
coord_arcsec_2000 | 205819.38+442817.5 |
Period (P) | 635.1d | |
Periastron (T) | 39186.1d (1966.164y) | |
Semi-major axis (a) | 7.48m | ± 0.64 |
Eccentricity (e) | 0.44 | |
Inclination (i) | 32.4° | ± 2.4 |
Longitude of periastron (ω) | 148.1° | |
Node (Ω) | 306.2° | ± 4 |
Notes | n | |
Reference | Jnc2005 | |
Equinox | | |
Last observation | 1992 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
272.5 |
0.010 |
2001-01-01 |
127.8 |
0.004 |
2002-01-01 |
293.9 |
0.010 |
2003-01-01 |
210.9 |
0.006 |
2004-01-01 |
319.0 |
0.009 |
2005-01-01 |
251.4 |
0.009 |
2006-01-01 |
14.3 |
0.005 |
2007-01-01 |
276.2 |
0.010 |
2008-01-01 |
146.6 |
0.005 |
2009-01-01 |
297.6 |
0.010 |
2010-01-01 |
219.9 |
0.007 |
2011-01-01 |
324.7 |
0.008 |
2012-01-01 |
256.3 |
0.009 |
2013-01-01 |
34.4 |
0.004 |
2014-01-01 |
279.9 |
0.010 |
2015-01-01 |
163.2 |
0.005 |
2016-01-01 |
301.5 |
0.010 |
2017-01-01 |
227.8 |
0.007 |
2018-01-01 |
331.3 |
0.007 |
2019-01-01 |
260.8 |
0.009 |
2020-01-01 |
59.0 |
0.004 |
2021-01-01 |
283.6 |
0.010 |
2022-01-01 |
177.9 |
0.005 |
2023-01-01 |
305.6 |
0.010 |
2024-01-01 |
234.9 |
0.008 |
2025-01-01 |
339.1 |
0.007 |
2026-01-01 |
265.1 |
0.010 |
2027-01-01 |
85.2 |
0.004 |
2028-01-01 |
287.2 |
0.010 |
2029-01-01 |
190.8 |
0.006 |
2030-01-01 |
309.9 |
0.009 |
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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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