01535-0013 WAA 20 (Xi Psc)
01h 53m 32.87s -00° 12' 38.1" P.A. 220.00 sep 0.7 mag 18.80,18.80 Sp M1/2 dist. 54.91 pc (179.12 l.y.)
| Coord 2000 |
01535-0013 |
|
Discov num |
WAA 20 |
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Comp |
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Coord arcsec 2000 |
01 53 32.87 -00 12 38.1 |
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| Date first |
2001 |
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Date last |
2002 |
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Obs |
2 |
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| Pa first |
220 |
|
Pa last |
220 |
|
P.A. Now (θ) |
220° |
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| Sep first |
0.7 |
|
Sep last |
0.7 |
|
Sep. Now (ρ) |
0.7" |
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| Mag pri |
18.80 |
|
Mag sec |
18.80 |
|
delta mag (ΔM) |
0 |
|
Spectral class |
M1/2 (red) |
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| Pri motion ra |
+024 |
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Sec motion ra |
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| Pri motion dec |
-011 |
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Sec motion dec |
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| Notes |
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Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Xi Psc |
|
Var name |
NSV654 Psc |
|
Constellation |
Cetus |
|
SAO |
110206 |
|
| HIP |
8833 |
|
Tycho2 |
0033-01213-1 |
|
HD |
11559 |
|
HR |
549 |
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| GC |
2293 |
|
BD |
BD+02 290 |
|
Bayer |
Xi Piscium |
|
Bayer name |
Xi Psc |
|
| FK5 |
65 |
|
Distance |
54.91 |
|
Distance ly |
179.12 |
|
Bayer greek |
ξ Psc |
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Bayer or Flamsteed indentifiers not always match the correct constellation because of procession and proper motion of the star. (Psc vs Cet)
ORBITAL ELEMENTS
| Period (P) | 1672.4d (4.58y) | |
Periastron (T) | 37651.5d (1961.962y) | |
Semi-major axis (a) | 13.1m | ± 1.66 |
| Eccentricity (e) | 0.18 | |
Inclination (i) | 65.85° | ± 12.24 |
Longitude of periastron (ω) | 71° | |
| Node (Ω) | 270.13° | ± 17.03 |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
98.2 |
0.014 |
| 2001-01-01 |
151.7 |
0.007 |
| 2002-01-01 |
250.4 |
0.011 |
| 2003-01-01 |
297.2 |
0.008 |
| 2004-01-01 |
80.0 |
0.012 |
| 2005-01-01 |
112.4 |
0.012 |
| 2006-01-01 |
206.6 |
0.007 |
| 2007-01-01 |
267.0 |
0.012 |
| 2008-01-01 |
22.0 |
0.005 |
| 2009-01-01 |
93.7 |
0.014 |
| 2010-01-01 |
136.6 |
0.008 |
| 2011-01-01 |
242.4 |
0.010 |
| 2012-01-01 |
285.5 |
0.010 |
| 2013-01-01 |
72.6 |
0.010 |
| 2014-01-01 |
106.5 |
0.013 |
| 2015-01-01 |
185.9 |
0.006 |
| 2016-01-01 |
261.2 |
0.012 |
| 2017-01-01 |
340.1 |
0.005 |
| 2018-01-01 |
89.0 |
0.013 |
| 2019-01-01 |
125.4 |
0.009 |
| 2020-01-01 |
232.1 |
0.009 |
| 2021-01-01 |
277.4 |
0.011 |
| 2022-01-01 |
61.8 |
0.008 |
| 2023-01-01 |
101.4 |
0.013 |
| 2024-01-01 |
164.4 |
0.006 |
| 2025-01-01 |
255.0 |
0.011 |
| 2026-01-01 |
309.4 |
0.006 |
| 2027-01-01 |
83.9 |
0.012 |
| 2028-01-01 |
117.0 |
0.011 |
| 2029-01-01 |
218.3 |
0.007 |
| 2030-01-01 |
270.9 |
0.012 |
| 2031-01-01 |
43.0 |
0.006 |
| 2032-01-01 |
96.7 |
0.014 |
| 2033-01-01 |
146.2 |
0.007 |
| 2034-01-01 |
248.0 |
0.011 |
| 2035-01-01 |
292.7 |
0.008 |
| 2036-01-01 |
77.8 |
0.011 |
| 2037-01-01 |
110.3 |
0.012 |
| 2038-01-01 |
200.1 |
0.006 |
| 2039-01-01 |
265.1 |
0.012 |
| 2040-01-01 |
8.6 |
0.004 |
| 2041-01-01 |
92.2 |
0.014 |
| 2042-01-01 |
132.5 |
0.009 |
| 2043-01-01 |
239.3 |
0.009 |
| 2044-01-01 |
282.6 |
0.010 |
| 2045-01-01 |
69.6 |
0.009 |
| 2046-01-01 |
104.8 |
0.013 |
| 2047-01-01 |
178.7 |
0.006 |
| 2048-01-01 |
259.2 |
0.012 |
| 2049-01-01 |
327.9 |
0.005 |
| 2050-01-01 |
87.4 |
0.013 |
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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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