21589-3227 LDS 4929
21h 58m 50.21s -32° 28' 20.1" P.A. 353.00 sep 113.1 mag 14.30,15.30 Sp M3.5+M4.5
| Coord 2000 |
21589-3227 |
|
Discov num |
LDS4929 |
|
Comp |
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Coord arcsec 2000 |
21 58 50.21 -32 28 20.1 |
|
| Date first |
1960 |
|
Date last |
2015 |
|
Obs |
11 |
|
| Pa first |
354 |
|
Pa last |
353.2 |
|
P.A. Now (θ) |
353.2° |
|
| Sep first |
113.0 |
|
Sep last |
113.077 |
|
Sep. Now (ρ) |
113.077" |
|
| Mag pri |
14.30 |
|
Mag sec |
15.30 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
M3.5+M4.5 (red/red) |
|
| Pri motion ra |
-350 |
|
Sec motion ra |
-323 |
|
| Pri motion dec |
-411 |
|
Sec motion dec |
-433 |
|
| Notes |
N
R
(See Notes, Red magnitudes) |
|
rPM=0.064 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Piscis Austrinus |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 21589-3227 |
| coord_arcsec_2000 | 215849.14-322625.3 |
| Period (P) | 6.141y | ± 0.059 |
Periastron (T) | 2005.73y | ± 0.16 |
Semi-major axis (a) | 28.1m | ± 1.2 |
| Eccentricity (e) | 0.12 | ± 0.02 |
Inclination (i) | 131.8° | ± 4.1 |
Longitude of periastron (ω) | 130.5° | ± 11.2 |
| Node (Ω) | 130.5° | ± 5.1 |
Notes | n | |
Reference | Lur2014 | |
| Equinox | | |
Last observation | 2012 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
323.4 |
0.024 |
| 2001 |
275.0 |
0.024 |
| 2002 |
206.4 |
0.021 |
| 2003 |
154.4 |
0.029 |
| 2004 |
119.6 |
0.029 |
| 2005 |
59.2 |
0.018 |
| 2006 |
331.0 |
0.023 |
| 2007 |
282.5 |
0.024 |
| 2008 |
216.5 |
0.020 |
| 2009 |
159.9 |
0.028 |
| 2010 |
124.8 |
0.029 |
| 2011 |
72.1 |
0.019 |
| 2012 |
339.6 |
0.022 |
| 2013 |
289.5 |
0.025 |
| 2014 |
227.0 |
0.020 |
| 2015 |
165.9 |
0.026 |
| 2016 |
129.6 |
0.030 |
| 2017 |
83.1 |
0.021 |
| 2018 |
349.4 |
0.020 |
| 2019 |
296.2 |
0.026 |
| 2020 |
237.5 |
0.020 |
| 2021 |
172.3 |
0.025 |
| 2022 |
134.4 |
0.030 |
| 2023 |
92.5 |
0.022 |
| 2024 |
0.7 |
0.019 |
| 2025 |
302.7 |
0.026 |
| 2026 |
247.6 |
0.021 |
| 2027 |
179.5 |
0.024 |
| 2028 |
139.1 |
0.030 |
| 2029 |
100.5 |
0.024 |
| 2030 |
13.8 |
0.018 |
|
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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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