08464-1333 RST 5507 (12 Hya)
08h 46m 22.53s -13° 32' 51.7" P.A. 266.00 sep 26.8 mag 4.32,13.70 Sp G8IIIb dist. 75.13 pc (245.07 l.y.)
| Coord 2000 |
08464-1333 |
|
Discov num |
RST5507 |
|
Comp |
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Coord arcsec 2000 |
08 46 22.53 -13 32 51.7 |
|
| Date first |
1951 |
|
Date last |
2016 |
|
Obs |
5 |
|
| Pa first |
266 |
|
Pa last |
265.6 |
|
P.A. Now (θ) |
265.6° |
|
| Sep first |
22.2 |
|
Sep last |
26.8 |
|
Sep. Now (ρ) |
26.8" |
|
| Mag pri |
4.32 |
|
Mag sec |
13.70 |
|
delta mag (ΔM) |
9.38 |
|
Spectral class |
G8IIIb (yellow) |
|
| Pri motion ra |
+010 |
|
Sec motion ra |
-002 |
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| Pri motion dec |
-015 |
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Sec motion dec |
+001 |
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| Notes |
N
S
(See Notes, Parallax indidates non-physical) |
|
rPM=1.109
This double is not physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
12 Hya |
|
Constellation |
Hydra |
|
SAO |
154622 |
|
HIP |
43067 |
|
| Tycho2 |
5454-01870-1 |
|
Gaia DR2 |
5735066776627839872 |
|
HD |
74918 |
|
HR |
3484 |
|
| GC |
12097 |
|
BD |
BD-13 2673 |
|
Flamsteed |
12 Hydrae |
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Flamsteed name |
12 Hya |
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| Distance |
75.13 |
|
Distance ly |
245.07 |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 08464-1333 RST5507 A |
| coord_arcsec_2000 | 084622.53-133251.7 |
| Period (P) | 1592d (4.36y) | ± 806 |
Periastron (T) | 49194d (1993.564y) | ± 664 |
Semi-major axis (a) | 11.6m | ± 5.7 |
| Eccentricity (e) | 0.4 | ± 0.26 |
Inclination (i) | 58° | ± 10 |
Longitude of periastron (ω) | 103° | ± 34 |
| Node (Ω) | 91° | ± 16 |
Notes | | |
Reference | Gln2007 | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
17.7 |
0.009 |
| 2001-01-01 |
67.7 |
0.012 |
| 2002-01-01 |
122.2 |
0.006 |
| 2003-01-01 |
287.4 |
0.010 |
| 2004-01-01 |
351.3 |
0.008 |
| 2005-01-01 |
53.3 |
0.011 |
| 2006-01-01 |
93.1 |
0.010 |
| 2007-01-01 |
265.3 |
0.008 |
| 2008-01-01 |
325.0 |
0.009 |
| 2009-01-01 |
35.5 |
0.010 |
| 2010-01-01 |
78.1 |
0.012 |
| 2011-01-01 |
204.9 |
0.004 |
| 2012-01-01 |
302.8 |
0.010 |
| 2013-01-01 |
12.4 |
0.009 |
| 2014-01-01 |
64.8 |
0.012 |
| 2015-01-01 |
112.8 |
0.007 |
| 2016-01-01 |
283.2 |
0.010 |
| 2017-01-01 |
345.5 |
0.008 |
| 2018-01-01 |
49.9 |
0.011 |
| 2019-01-01 |
89.5 |
0.011 |
| 2020-01-01 |
258.7 |
0.007 |
| 2021-01-01 |
320.0 |
0.009 |
| 2022-01-01 |
31.0 |
0.009 |
| 2023-01-01 |
75.3 |
0.012 |
| 2024-01-01 |
175.9 |
0.004 |
| 2025-01-01 |
298.6 |
0.010 |
| 2026-01-01 |
6.8 |
0.009 |
| 2027-01-01 |
61.9 |
0.012 |
| 2028-01-01 |
105.9 |
0.008 |
| 2029-01-01 |
278.9 |
0.010 |
| 2030-01-01 |
339.8 |
0.009 |
|
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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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