21147-0050 A 883 AB
21h 14m 41.11s -00° 49' 54.9" P.A. 264.00 sep 0.1 mag 7.46,8.30 Sp A1V dist. 310.56 pc (1013.05 l.y.)
| Coord 2000 |
21147-0050 |
|
Discov num |
A 883 |
|
Comp |
AB |
|
Coord arcsec 2000 |
21 14 41.11 -00 49 54.9 |
|
| Date first |
1904 |
|
Date last |
2021 |
|
Obs |
60 |
|
| Pa first |
44 |
|
Pa last |
264.3 |
|
P.A. Now (θ) |
257.7° |
|
| Sep first |
0.1 |
|
Sep last |
0.105 |
|
Sep. Now (ρ) |
0.108" |
|
| Mag pri |
7.46 |
|
Mag sec |
8.30 |
|
delta mag (ΔM) |
0.84 |
|
Spectral class |
A1V (white) |
|
| Pri motion ra |
+018 |
|
Sec motion ra |
|
|
| Pri motion dec |
+006 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
21147-0050 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
145230 |
21 14 41 -00 49 55 |
A 883 AB |
2021 |
60 |
264 |
0.1 |
7.46 |
8.30 |
0.84 |
Y |
<=== |
| Show |
HD 202260 |
145230 |
21 14 41 -00 49 55 |
STF 2775 AB,C |
2014 |
31 |
178 |
21.3 |
7.46 |
10.37 |
2.91 |
|
|
| Show |
|
145230 |
21 14 41 -00 49 55 |
STF 2775 AB,D |
2014 |
10 |
200 |
170.3 |
7.46 |
11.07 |
3.61 |
|
|
| Show |
|
145230 |
21 14 41 -00 49 55 |
LYS 39 AF |
2014 |
9 |
297 |
185.0 |
7.46 |
10.51 |
3.05 |
|
|
| Show |
|
145230 |
21 14 41 -00 49 55 |
LYS 39 AH |
2014 |
7 |
126 |
262.6 |
7.46 |
12.22 |
4.76 |
|
|
| Show |
|
|
21 14 37 -00 52 35 |
STF 2775 DE |
2015 |
14 |
125 |
74.5 |
11.07 |
11.50 |
0.43 |
|
|
| Show |
|
|
21 14 30 -00 48 32 |
LYS 39 FG |
2015 |
10 |
11 |
20.0 |
10.51 |
12.56 |
2.05 |
|
|
Octuple system
9 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Aquarius |
|
SAO |
145230 |
|
HIP |
104878 |
|
Tycho2 |
5193-00591-1 |
|
| HD |
202260 |
|
GC |
29699 |
|
ADS |
14775 |
|
BD |
BD-01 4131 |
|
| Distance |
310.56 |
|
Distance ly |
1013.05 |
|
ORBITAL ELEMENTS
| Period (P) | 81.11y | ± 0.78 |
Periastron (T) | 1946.27y | ± 2.14 |
Semi-major axis (a) | 0.167a | ± 0.003 |
| Eccentricity (e) | 0.17 | ± 0.013 |
Inclination (i) | 126.8° | ± 1.8 |
Longitude of periastron (ω) | 260.9° | ± 11.3 |
| Node (Ω) | 116.6° | ± 2.8 |
Notes | n | |
Reference | Hrt2009 | |
| Equinox | | |
Last observation | 2006 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
337.6 |
0.139 |
| 2001 |
333.9 |
0.142 |
| 2002 |
330.4 |
0.146 |
| 2003 |
327.0 |
0.149 |
| 2004 |
323.8 |
0.152 |
| 2005 |
320.7 |
0.155 |
| 2006 |
317.6 |
0.157 |
| 2007 |
314.7 |
0.159 |
| 2008 |
311.8 |
0.160 |
| 2009 |
309.0 |
0.161 |
| 2010 |
306.2 |
0.161 |
| 2011 |
303.4 |
0.161 |
| 2012 |
300.6 |
0.160 |
| 2013 |
297.7 |
0.159 |
| 2014 |
294.8 |
0.156 |
| 2015 |
291.7 |
0.153 |
| 2016 |
288.5 |
0.150 |
| 2017 |
285.2 |
0.145 |
| 2018 |
281.6 |
0.140 |
| 2019 |
277.7 |
0.135 |
| 2020 |
273.5 |
0.128 |
| 2021 |
268.8 |
0.122 |
| 2022 |
263.6 |
0.115 |
| 2023 |
257.7 |
0.108 |
| 2024 |
251.0 |
0.101 |
| 2025 |
243.4 |
0.095 |
| 2026 |
234.9 |
0.090 |
| 2027 |
225.4 |
0.086 |
| 2028 |
215.2 |
0.084 |
| 2029 |
204.6 |
0.083 |
| 2030 |
194.3 |
0.085 |
|
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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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