09474+1134 MCA 34 AB (19 Leo)
09h 47m 25.99s +11° 34' 05.4" P.A. 341.00 sep 0.0 mag 6.40,6.90 Sp A7V dist. 84.67 pc (276.19 l.y.)
Coord 2000 |
09474+1134 |
|
Discov num |
MCA 34 |
|
Comp |
AB |
|
Coord arcsec 2000 |
09 47 25.99 +11 34 05.4 |
|
Date first |
1975 |
|
Date last |
2021 |
|
Obs |
54 |
|
Pa first |
357 |
|
Pa last |
341.1 |
|
P.A. Now (θ) |
14.5° |
|
Sep first |
0.0 |
|
Sep last |
0.03 |
|
Sep. Now (ρ) |
0.104" |
|
Mag pri |
6.40 |
|
Mag sec |
6.90 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
A7V (white) |
|
Pri motion ra |
-050 |
|
Sec motion ra |
|
|
Pri motion dec |
+001 |
|
Sec motion dec |
|
|
Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
09474+1134 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
19 Leo |
98767 |
09 47 26 +11 34 05 |
MCA 34 AB |
2021 |
54 |
341 |
0.0 |
6.40 |
6.90 |
0.50 |
Y |
<=== |
Show |
|
98767 |
09 47 26 +11 34 05 |
RBR 39 AC |
2004 |
1 |
229 |
1.6 |
6.40 |
15.00 |
8.60 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Name |
19 Leo |
|
Constellation |
Leo |
|
SAO |
98767 |
|
HIP |
48029 |
|
Tycho2 |
0831-00841-1 |
|
Gaia DR2 |
613339647904722432 |
|
HD |
84722 |
|
HR |
3880 |
|
GC |
13485 |
|
BD |
BD+12 2095 |
|
Flamsteed |
19 Leonis |
|
Flamsteed name |
19 Leo |
|
Distance |
84.67 |
|
Distance ly |
276.19 |
|
ORBITAL ELEMENTS
Period (P) | 15.119y | ± 0.018 |
Periastron (T) | 2019.163y | ± 0.094 |
Semi-major axis (a) | 0.111a | ± 0.001 |
Eccentricity (e) | 0.313 | ± 0.006 |
Inclination (i) | 76.3° | ± 0.5 |
Longitude of periastron (ω) | 22.6° | ± 2.7 |
Node (Ω) | 203.1° | ± 0.5 |
Notes | n | |
Reference | Msn2021b | |
Equinox | | |
Last observation | 2021 | |
Grade | 2 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
62.5 |
0.045 |
2001 |
129.4 |
0.027 |
2002 |
180.8 |
0.052 |
2003 |
196.9 |
0.075 |
2004 |
208.2 |
0.072 |
2005 |
231.5 |
0.037 |
2006 |
336.4 |
0.030 |
2007 |
6.9 |
0.072 |
2008 |
15.2 |
0.108 |
2009 |
19.8 |
0.130 |
2010 |
23.4 |
0.141 |
2011 |
26.6 |
0.141 |
2012 |
30.2 |
0.130 |
2013 |
34.8 |
0.109 |
2014 |
42.2 |
0.081 |
2015 |
58.9 |
0.048 |
2016 |
118.7 |
0.027 |
2017 |
177.6 |
0.048 |
2018 |
195.5 |
0.074 |
2019 |
206.7 |
0.074 |
2020 |
226.5 |
0.042 |
2021 |
326.3 |
0.026 |
2022 |
5.3 |
0.068 |
2023 |
14.5 |
0.104 |
2024 |
19.4 |
0.128 |
2025 |
23.0 |
0.141 |
2026 |
26.3 |
0.141 |
2027 |
29.8 |
0.131 |
2028 |
34.2 |
0.112 |
2029 |
41.0 |
0.085 |
2030 |
55.8 |
0.052 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|