05069-2135 DON 93 BC
05h 06m 49.47s -21° 35' 03.7" P.A. 93.00 sep 1.1 mag 11.71,12.90 Sp M2.5
| Coord 2000 |
05069-2135 |
|
Discov num |
DON 93 |
|
Comp |
BC |
|
Coord arcsec 2000 |
05 06 49.47 -21 35 03.7 |
|
| Date first |
1930 |
|
Date last |
2021 |
|
Obs |
17 |
|
| Pa first |
30 |
|
Pa last |
92.7 |
|
P.A. Now (θ) |
92.7° |
|
| Sep first |
1.2 |
|
Sep last |
1.123 |
|
Sep. Now (ρ) |
1.123" |
|
| Mag pri |
11.71 |
|
Mag sec |
12.90 |
|
delta mag (ΔM) |
1.19 |
|
Spectral class |
M2.5 (red) |
|
| Pri motion ra |
+033 |
|
Sec motion ra |
|
|
| Pri motion dec |
-033 |
|
Sec motion dec |
|
|
| Notes |
Z
(Parallax indicates components are physical) |
|
This double is physical.
05069-2135 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
|
05 06 50 -21 35 09 |
DON 93 AB |
2016 |
19 |
310 |
8.2 |
10.60 |
11.71 |
1.11 |
|
|
| Show |
|
|
05 06 49 -21 35 04 |
DON 93 BC |
2021 |
17 |
93 |
1.1 |
11.71 |
12.90 |
1.19 |
Y |
<=== |
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Lepus |
|
Tycho2 |
5913-01376-1 |
|
Gaia DR2 |
2962658549474035712 |
|
ORBITAL ELEMENTS
| Period (P) | 116.6y | ± 1.6 |
Periastron (T) | 2005.8y | ± 1.3 |
Semi-major axis (a) | 1.287a | ± 0.018 |
| Eccentricity (e) | 0.293 | ± 0.008 |
Inclination (i) | 139.3° | ± 2.2 |
Longitude of periastron (ω) | 280.3° | ± 2.6 |
| Node (Ω) | 93.3° | ± 3.8 |
Notes | | |
Reference | Msn2021c | |
| Equinox | | |
Last observation | 2020 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
212.6 |
0.756 |
| 2001 |
205.9 |
0.732 |
| 2002 |
198.8 |
0.713 |
| 2003 |
191.4 |
0.699 |
| 2004 |
183.7 |
0.693 |
| 2005 |
176.0 |
0.693 |
| 2006 |
168.3 |
0.700 |
| 2007 |
160.9 |
0.713 |
| 2008 |
153.8 |
0.733 |
| 2009 |
147.1 |
0.757 |
| 2010 |
140.8 |
0.784 |
| 2011 |
135.0 |
0.815 |
| 2012 |
129.6 |
0.846 |
| 2013 |
124.7 |
0.879 |
| 2014 |
120.0 |
0.912 |
| 2015 |
115.7 |
0.944 |
| 2016 |
111.7 |
0.976 |
| 2017 |
107.9 |
1.006 |
| 2018 |
104.4 |
1.034 |
| 2019 |
101.0 |
1.061 |
| 2020 |
97.8 |
1.085 |
| 2021 |
94.7 |
1.108 |
| 2022 |
91.7 |
1.129 |
| 2023 |
88.9 |
1.148 |
| 2024 |
86.1 |
1.165 |
| 2025 |
83.4 |
1.180 |
| 2026 |
80.8 |
1.193 |
| 2027 |
78.2 |
1.205 |
| 2028 |
75.7 |
1.215 |
| 2029 |
73.2 |
1.224 |
| 2030 |
70.7 |
1.231 |
|
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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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