20251+5936 A 730 (HD 194882)
20h 25m 05.00s +59° 36' 00.4" P.A. 282.00 sep 0.2 mag 6.94,7.63 Sp A2IV dist. 251.26 pc (819.61 l.y.)
| Coord 2000 |
20251+5936 |
|
Discov num |
A 730 |
|
Comp |
|
|
Coord arcsec 2000 |
20 25 05.00 +59 36 00.4 |
|
| Date first |
1904 |
|
Date last |
2009 |
|
Obs |
65 |
|
| Pa first |
314 |
|
Pa last |
282.4 |
|
P.A. Now (θ) |
228.3° |
|
| Sep first |
0.2 |
|
Sep last |
0.179 |
|
Sep. Now (ρ) |
0.112" |
|
| Mag pri |
6.94 |
|
Mag sec |
7.63 |
|
delta mag (ΔM) |
0.69 |
|
Spectral class |
A2IV (white) |
|
| Pri motion ra |
-002 |
|
Sec motion ra |
|
|
| Pri motion dec |
-005 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 194882 |
|
Constellation |
Cygnus |
|
SAO |
32562 |
|
HIP |
100714 |
|
| Tycho2 |
3949-02016-1 |
|
Gaia DR2 |
2188642598775572096 |
|
HD |
194882 |
|
HR |
7818 |
|
| GC |
28434 |
|
ADS |
13850 |
|
BD |
BD+59 2228 |
|
Distance |
251.26 |
|
| Distance ly |
819.61 |
|
ORBITAL ELEMENTS
| Period (P) | 175.089y | |
Periastron (T) | 2038.638y | |
Semi-major axis (a) | 0.231a | |
| Eccentricity (e) | 0.005 | |
Inclination (i) | 118.5° | |
Longitude of periastron (ω) | 309.2° | |
| Node (Ω) | 152.2° | |
Notes | n | |
Reference | Pru2010 | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
303.3 |
0.172 |
| 2001 |
301.5 |
0.168 |
| 2002 |
299.6 |
0.164 |
| 2003 |
297.6 |
0.159 |
| 2004 |
295.4 |
0.155 |
| 2005 |
293.2 |
0.151 |
| 2006 |
290.8 |
0.146 |
| 2007 |
288.3 |
0.142 |
| 2008 |
285.6 |
0.138 |
| 2009 |
282.8 |
0.134 |
| 2010 |
279.8 |
0.130 |
| 2011 |
276.6 |
0.127 |
| 2012 |
273.3 |
0.123 |
| 2013 |
269.7 |
0.120 |
| 2014 |
266.0 |
0.118 |
| 2015 |
262.2 |
0.115 |
| 2016 |
258.1 |
0.113 |
| 2017 |
254.0 |
0.112 |
| 2018 |
249.8 |
0.111 |
| 2019 |
245.4 |
0.110 |
| 2020 |
241.1 |
0.110 |
| 2021 |
236.8 |
0.110 |
| 2022 |
232.5 |
0.111 |
| 2023 |
228.3 |
0.112 |
| 2024 |
224.2 |
0.114 |
| 2025 |
220.2 |
0.116 |
| 2026 |
216.4 |
0.119 |
| 2027 |
212.8 |
0.122 |
| 2028 |
209.4 |
0.125 |
| 2029 |
206.1 |
0.128 |
| 2030 |
203.0 |
0.132 |
|
|
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 |
|
WDS 20251+5936 A 730 (HD 194882) : NOTES
| discov_num |
notes |
refcode |
| A 730 |
Malkov et al. (2012) derive dynamical, photometric, and spectroscopic |
|
|
masses of 6.38 +/- 3.96, 4.95, and 2.19 Msun, respectively. |
Mlk2012 |
REFERENCES
| refcode |
metd |
author |
reference |
| Mlk2012 |
not - |
Malkov, O.Yu., Tamazian, V.S., Docobo, J.A., & Chulkov, D.A. |
2012A&A...546A..69M |
| Mlk2012 |
|
A&A 546, A69, 2012 |
|
| Pru2010 |
S j |
Prieur, J.-L., Scardia, M., Pansecchi, L., Argyle, R.W., & Sala, M. |
2010MNRAS.407.1913P |
| Pru2010 |
+orb |
MNRAS 407, 1913, 2010 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
A |
Aitken, R.G. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 20251+5936 |
A 730 |
|
2004 |
62 |
293 |
0.2 |
6.94 |
7.63 |
A2IV |
NO |
202505.00+593600.4 |
| 20251+5936 |
A 730 |
|
2008 |
64 |
284 |
0.2 |
6.94 |
7.63 |
A2IV |
NO |
202505.00+593600.4 |
| 20251+5936 |
A 730 |
|
2009 |
64 |
274 |
0.2 |
6.94 |
7.63 |
A2IV |
NO |
202505.00+593600.4 |
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WDS 20251+5936 A 730 (HD 194882) : VISUAL OBSERVATIONS REPORTS
No records found.
WDS 20251+5936 A 730 (HD 194882) : MEASURES
No records found.
WDS 20251+5936 (HD 194882) : VIRTUAL EYEPIECE
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Pass over with the mouse cursor to display the catalog designation.
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WDS 20251+5936 (HD 194882) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
