09239+2754 STT 201 AB (HD 81027)
09h 23m 54.55s +27° 53' 54.9" P.A. 206.00 sep 1.4 mag 8.48,9.48 Sp F5 dist. 156.25 pc (509.69 l.y.)
| Coord 2000 |
09239+2754 |
|
Discov num |
STT 201 |
|
Comp |
AB |
|
Coord arcsec 2000 |
09 23 54.55 +27 53 54.9 |
|
| Date first |
1844 |
|
Date last |
2017 |
|
Obs |
101 |
|
| Pa first |
225 |
|
Pa last |
206.1 |
|
P.A. Now (θ) |
206.1° |
|
| Sep first |
1.2 |
|
Sep last |
1.373 |
|
Sep. Now (ρ) |
1.373" |
|
| Mag pri |
8.48 |
|
Mag sec |
9.48 |
|
delta mag (ΔM) |
1 |
|
Spectral class |
F5 (yellow-white) |
|
| Pri motion ra |
-005 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-040 |
|
Sec motion dec |
-040 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
09239+2754 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 81027 |
|
09 23 55 +27 53 55 |
STT 201 AB |
2017 |
101 |
206 |
1.4 |
8.48 |
9.48 |
1.00 |
Y |
<=== |
| Show |
|
|
09 23 55 +27 53 55 |
STT 201 AC |
2015 |
10 |
317 |
34.0 |
8.48 |
13.01 |
4.53 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 81027 |
|
Constellation |
Leo |
|
HIP |
46088 |
|
Tycho2 |
1958-01602-1 |
|
| Gaia DR2 |
695286730560737664 |
|
HD |
81027 |
|
ADS |
7344 |
|
BD |
BD+28 1745 |
|
| Distance |
156.25 |
|
Distance ly |
509.69 |
|
ORBITAL ELEMENTS
| Period (P) | 1883y | ± 170 |
Periastron (T) | 2288y | ± 32.3 |
Semi-major axis (a) | 1.392a | ± 0.087 |
| Eccentricity (e) | 0.274 | ± 0.046 |
Inclination (i) | 140.3° | ± 2.9 |
Longitude of periastron (ω) | 268.2° | ± 15.2 |
| Node (Ω) | 29.4° | ± 5.5 |
Notes | | |
Reference | PkO2018b | |
| Equinox | | |
Last observation | | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
207.3 |
1.260 |
| 2001 |
207.1 |
1.258 |
| 2002 |
207.0 |
1.257 |
| 2003 |
206.8 |
1.255 |
| 2004 |
206.6 |
1.254 |
| 2005 |
206.4 |
1.253 |
| 2006 |
206.3 |
1.251 |
| 2007 |
206.1 |
1.250 |
| 2008 |
205.9 |
1.248 |
| 2009 |
205.7 |
1.247 |
| 2010 |
205.6 |
1.245 |
| 2011 |
205.4 |
1.244 |
| 2012 |
205.2 |
1.242 |
| 2013 |
205.0 |
1.241 |
| 2014 |
204.8 |
1.239 |
| 2015 |
204.7 |
1.238 |
| 2016 |
204.5 |
1.236 |
| 2017 |
204.3 |
1.235 |
| 2018 |
204.1 |
1.233 |
| 2019 |
203.9 |
1.231 |
| 2020 |
203.8 |
1.230 |
| 2021 |
203.6 |
1.228 |
| 2022 |
203.4 |
1.227 |
| 2023 |
203.2 |
1.225 |
| 2024 |
203.0 |
1.224 |
| 2025 |
202.9 |
1.222 |
| 2026 |
202.7 |
1.220 |
| 2027 |
202.5 |
1.219 |
| 2028 |
202.3 |
1.217 |
| 2029 |
202.1 |
1.216 |
| 2030 |
201.9 |
1.214 |
| 2031 |
201.7 |
1.212 |
| 2032 |
201.6 |
1.211 |
| 2033 |
201.4 |
1.209 |
| 2034 |
201.2 |
1.207 |
| 2035 |
201.0 |
1.206 |
| 2036 |
200.8 |
1.204 |
| 2037 |
200.6 |
1.202 |
| 2038 |
200.4 |
1.201 |
| 2039 |
200.2 |
1.199 |
| 2040 |
200.0 |
1.197 |
| 2041 |
199.9 |
1.195 |
| 2042 |
199.7 |
1.194 |
| 2043 |
199.5 |
1.192 |
| 2044 |
199.3 |
1.190 |
| 2045 |
199.1 |
1.189 |
| 2046 |
198.9 |
1.187 |
| 2047 |
198.7 |
1.185 |
| 2048 |
198.5 |
1.183 |
| 2049 |
198.3 |
1.182 |
| 2050 |
198.1 |
1.180 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
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