10106-1221 BU 593 AB
10h 10m 35.28s -12° 21' 14.7" P.A. 102.00 sep 72.2 mag 3.61,13.30 Sp K0III dist. 34.51 pc (112.57 l.y.)
| Coord 2000 |
10106-1221 |
|
Discov num |
BU 593 |
|
Comp |
AB |
|
Coord arcsec 2000 |
10 10 35.28 -12 21 14.7 |
|
| Date first |
1878 |
|
Date last |
2015 |
|
Obs |
9 |
|
| Pa first |
118 |
|
Pa last |
102.4 |
|
P.A. Now (θ) |
102.4° |
|
| Sep first |
50.8 |
|
Sep last |
72.24 |
|
Sep. Now (ρ) |
72.24" |
|
| Mag pri |
3.61 |
|
Mag sec |
13.30 |
|
delta mag (ΔM) |
9.69 |
|
Spectral class |
K0III (yellow-orange) |
|
| Pri motion ra |
-217 |
|
Sec motion ra |
-013 |
|
| Pri motion dec |
-074 |
|
Sec motion dec |
-008 |
|
| Notes |
N
S
(See Notes, Parallax indidates non-physical) |
|
rPM=0.935
This double is not physical.
10106-1221 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
155785 |
10 10 35 -12 21 15 |
BU 593 AB |
2015 |
9 |
102 |
72.2 |
3.61 |
13.30 |
9.69 |
|
<=== |
| Show |
Lam Hya |
155785 |
10 10 35 -12 21 15 |
BU 593 AC |
2015 |
9 |
157 |
110.0 |
3.71 |
11.81 |
8.10 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Hydra |
|
SAO |
155785 |
|
HIP |
49841 |
|
Tycho2 |
5485-01310-1 |
|
| Gaia DR2 |
3765867289804452608 |
|
HD |
88284 |
|
HR |
3994 |
|
GC |
13982 |
|
| ADS |
7671 |
|
BD |
BD-11 2820 |
|
Bayer |
Lambda Hydrae |
|
Bayer name |
Lam Hya |
|
| Flamsteed |
41 Hydrae |
|
Flamsteed name |
41 Hya |
|
FK5 |
381 |
|
Distance |
34.51 |
|
| Distance ly |
112.57 |
|
Bayer greek |
λ Hya |
|
SUSPECTED ORBITAL ELEMENTS
| Identifier | 10106-1221 |
| coord_arcsec_2000 | 101035.40-122113.8 |
| Period (P) | 1585.8d (4.34y) | |
Periastron (T) | 48664.3906d (1992.114y) | ± 35.6145 |
Semi-major axis (a) | 16.79m | ± 1.2 |
| Eccentricity (e) | 0.138 | |
Inclination (i) | 79.49° | ± 10.4 |
Longitude of periastron (ω) | 238.9° | |
| Node (Ω) | 249.62° | ± 5.64 |
Notes | n | |
Reference | HIP1997d | |
| Equinox | | |
Last observation | 1991 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
65.3 |
0.015 |
| 2001-01-01 |
119.1 |
0.003 |
| 2002-01-01 |
248.4 |
0.017 |
| 2003-01-01 |
267.8 |
0.010 |
| 2004-01-01 |
57.0 |
0.011 |
| 2005-01-01 |
79.5 |
0.011 |
| 2006-01-01 |
242.6 |
0.014 |
| 2007-01-01 |
258.1 |
0.015 |
| 2008-01-01 |
33.5 |
0.005 |
| 2009-01-01 |
71.0 |
0.015 |
| 2010-01-01 |
227.5 |
0.007 |
| 2011-01-01 |
252.7 |
0.018 |
| 2012-01-01 |
299.1 |
0.004 |
| 2013-01-01 |
64.8 |
0.015 |
| 2014-01-01 |
111.2 |
0.004 |
| 2015-01-01 |
248.1 |
0.017 |
| 2016-01-01 |
266.7 |
0.010 |
| 2017-01-01 |
56.1 |
0.011 |
| 2018-01-01 |
78.6 |
0.011 |
| 2019-01-01 |
242.0 |
0.013 |
| 2020-01-01 |
257.6 |
0.015 |
| 2021-01-01 |
29.6 |
0.005 |
| 2022-01-01 |
70.5 |
0.015 |
| 2023-01-01 |
224.9 |
0.006 |
| 2024-01-01 |
252.3 |
0.018 |
| 2025-01-01 |
294.2 |
0.005 |
| 2026-01-01 |
64.3 |
0.015 |
| 2027-01-01 |
105.0 |
0.004 |
| 2028-01-01 |
247.7 |
0.017 |
| 2029-01-01 |
265.7 |
0.011 |
| 2030-01-01 |
55.1 |
0.010 |
|
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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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