02592+2120 STF 333 AB (Eps Ari)
02h 59m 12.73s +21° 20' 25.6" P.A. 211.00 sep 1.3 mag 5.17,5.57 Sp A2Vs+A2Vs dist. 101.94 pc (332.53 l.y.)
| Coord 2000 |
02592+2120 |
|
Discov num |
STF 333 |
|
Comp |
AB |
|
Coord arcsec 2000 |
02 59 12.73 +21 20 25.6 |
|
| Date first |
1827 |
|
Date last |
2023 |
|
Obs |
470 |
|
| Pa first |
186 |
|
Pa last |
210.7 |
|
P.A. Now (θ) |
210° |
|
| Sep first |
0.5 |
|
Sep last |
1.32 |
|
Sep. Now (ρ) |
1.348" |
|
| Mag pri |
5.17 |
|
Mag sec |
5.57 |
|
delta mag (ΔM) |
0.4 |
|
Spectral class |
A2Vs+A2Vs (white/white) |
|
| Pri motion ra |
-009 |
|
Sec motion ra |
-009 |
|
| Pri motion dec |
-005 |
|
Sec motion dec |
-005 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
02592+2120 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
Eps Ari |
75673 |
02 59 13 +21 20 26 |
STF 333 AB |
2023 |
470 |
211 |
1.3 |
5.17 |
5.57 |
0.40 |
Y |
<=== |
| Show |
|
75673 |
02 59 13 +21 20 26 |
STF 333 AC |
2000 |
5 |
192 |
145.6 |
5.17 |
12.70 |
7.53 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
Eps Ari |
|
Var name |
NSV1001 Ari |
|
Constellation |
Aries |
|
SAO |
75673 |
|
| HIP |
13914 |
|
Tycho2 |
1230-01424-1 |
|
Gaia DR2 |
108589696800254464 |
|
HD |
18519 |
|
| HR |
887 |
|
GC |
3582 |
|
ADS |
2257 |
|
BD |
BD+20 484 |
|
| Bayer |
Epsilon Arietis |
|
Bayer name |
Eps Ari |
|
Flamsteed |
48 Arietis |
|
Flamsteed name |
48 Ari |
|
| Distance |
101.94 |
|
Distance ly |
332.53 |
|
Bayer greek |
ε Ari |
|
ORBITAL ELEMENTS
| Period (P) | 710.5425y | ± 265.6559 |
Periastron (T) | 2098.303y | ± 36.8088 |
Semi-major axis (a) | 1.6688a | ± 0.37224 |
| Eccentricity (e) | 0.43531 | ± 0.18832 |
Inclination (i) | 83.89° | ± 1.265 |
Longitude of periastron (ω) | 268.178° | ± 35.461 |
| Node (Ω) | 29.955° | ± 1.89 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
208.7 |
1.434 |
| 2001 |
208.7 |
1.430 |
| 2002 |
208.8 |
1.426 |
| 2003 |
208.9 |
1.422 |
| 2004 |
208.9 |
1.417 |
| 2005 |
209.0 |
1.413 |
| 2006 |
209.1 |
1.408 |
| 2007 |
209.1 |
1.403 |
| 2008 |
209.2 |
1.398 |
| 2009 |
209.3 |
1.393 |
| 2010 |
209.3 |
1.388 |
| 2011 |
209.4 |
1.382 |
| 2012 |
209.5 |
1.376 |
| 2013 |
209.5 |
1.370 |
| 2014 |
209.6 |
1.364 |
| 2015 |
209.7 |
1.358 |
| 2016 |
209.8 |
1.351 |
| 2017 |
209.8 |
1.345 |
| 2018 |
209.9 |
1.338 |
| 2019 |
210.0 |
1.331 |
| 2020 |
210.1 |
1.323 |
| 2021 |
210.1 |
1.316 |
| 2022 |
210.2 |
1.308 |
| 2023 |
210.3 |
1.300 |
| 2024 |
210.4 |
1.292 |
| 2025 |
210.5 |
1.283 |
| 2026 |
210.5 |
1.275 |
| 2027 |
210.6 |
1.266 |
| 2028 |
210.7 |
1.257 |
| 2029 |
210.8 |
1.248 |
| 2030 |
210.9 |
1.238 |
| 2031 |
211.0 |
1.229 |
| 2032 |
211.1 |
1.219 |
| 2033 |
211.2 |
1.208 |
| 2034 |
211.3 |
1.198 |
| 2035 |
211.4 |
1.187 |
| 2036 |
211.4 |
1.177 |
| 2037 |
211.5 |
1.165 |
| 2038 |
211.6 |
1.154 |
| 2039 |
211.8 |
1.143 |
| 2040 |
211.9 |
1.131 |
| 2041 |
212.0 |
1.119 |
| 2042 |
212.1 |
1.106 |
| 2043 |
212.2 |
1.094 |
| 2044 |
212.3 |
1.081 |
| 2045 |
212.4 |
1.068 |
| 2046 |
212.5 |
1.055 |
| 2047 |
212.7 |
1.041 |
| 2048 |
212.8 |
1.027 |
| 2049 |
212.9 |
1.013 |
| 2050 |
213.0 |
0.999 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
