09276-3500 B 2215 (HD 81919)
09h 27m 38.42s -35° 00' 26.5" P.A. 38.00 sep 0.0 mag 7.40,7.50 Sp A5III/IV dist. 128.21 pc (418.22 l.y.)
| Coord 2000 |
09276-3500 |
|
Discov num |
B 2215 |
|
Comp |
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Coord arcsec 2000 |
09 27 38.42 -35 00 26.5 |
|
| Date first |
1935 |
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Date last |
2012 |
|
Obs |
6 |
|
| Pa first |
116 |
|
Pa last |
37.8 |
|
P.A. Now (θ) |
37.8° |
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| Sep first |
0.2 |
|
Sep last |
0.034 |
|
Sep. Now (ρ) |
0.034" |
|
| Mag pri |
7.40 |
|
Mag sec |
7.50 |
|
delta mag (ΔM) |
0.1 |
|
Spectral class |
A5III/IV (white) |
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| Pri motion ra |
-027 |
|
Sec motion ra |
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| Pri motion dec |
-024 |
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Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 81919 |
|
Constellation |
Antlia |
|
SAO |
200392 |
|
HIP |
46396 |
|
| Tycho2 |
7162-00264-1 |
|
Gaia DR2 |
5437474574366697088 |
|
HD |
81919 |
|
HR |
3756 |
|
| GC |
13055 |
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CD |
CD-34 5895 |
|
CP |
CP-34 3539 |
|
Distance |
128.21 |
|
| Distance ly |
418.22 |
|
ORBITAL ELEMENTS
| Period (P) | 721.3315d | ± 12.3809 |
Periastron (T) | 48702.0859d (1992.218y) | ± 18.8102 |
Semi-major axis (a) | 8.04m | ± 1.25 |
| Eccentricity (e) | 0.5707 | ± 0.1291 |
Inclination (i) | 116.45° | ± 7.11 |
Longitude of periastron (ω) | 107.94° | ± 9.91 |
| Node (Ω) | 123.65° | ± 6.43 |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
108.0 |
0.004 |
| 2001-01-01 |
189.1 |
0.006 |
| 2002-01-01 |
100.5 |
0.003 |
| 2003-01-01 |
186.1 |
0.006 |
| 2004-01-01 |
88.2 |
0.003 |
| 2005-01-01 |
183.3 |
0.006 |
| 2006-01-01 |
65.1 |
0.002 |
| 2007-01-01 |
180.7 |
0.006 |
| 2008-01-01 |
25.1 |
0.002 |
| 2009-01-01 |
178.1 |
0.007 |
| 2010-01-01 |
348.6 |
0.002 |
| 2011-01-01 |
175.7 |
0.007 |
| 2012-01-01 |
328.6 |
0.003 |
| 2013-01-01 |
173.4 |
0.007 |
| 2014-01-01 |
317.2 |
0.003 |
| 2015-01-01 |
171.1 |
0.007 |
| 2016-01-01 |
309.7 |
0.004 |
| 2017-01-01 |
169.0 |
0.007 |
| 2018-01-01 |
303.9 |
0.005 |
| 2019-01-01 |
167.0 |
0.007 |
| 2020-01-01 |
299.2 |
0.005 |
| 2021-01-01 |
165.0 |
0.007 |
| 2022-01-01 |
295.1 |
0.005 |
| 2023-01-01 |
163.1 |
0.008 |
| 2024-01-01 |
291.3 |
0.005 |
| 2025-01-01 |
161.3 |
0.008 |
| 2026-01-01 |
287.7 |
0.006 |
| 2027-01-01 |
159.5 |
0.008 |
| 2028-01-01 |
284.2 |
0.006 |
| 2029-01-01 |
157.8 |
0.008 |
| 2030-01-01 |
280.9 |
0.006 |
|
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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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