23209+1643 HEI 88 (HD 220077)
23h 20m 52.91s +16° 42' 39.2" P.A. 211.00 sep 0.2 mag 9.05,9.84 Sp F7V dist. 77.7 pc (253.46 l.y.)
| Coord 2000 |
23209+1643 |
|
Discov num |
HEI 88 |
|
Comp |
|
|
Coord arcsec 2000 |
23 20 52.91 +16 42 39.2 |
|
| Date first |
1978 |
|
Date last |
2020 |
|
Obs |
30 |
|
| Pa first |
193 |
|
Pa last |
211.2 |
|
P.A. Now (θ) |
214° |
|
| Sep first |
0.2 |
|
Sep last |
0.249 |
|
Sep. Now (ρ) |
0.251" |
|
| Mag pri |
9.05 |
|
Mag sec |
9.84 |
|
delta mag (ΔM) |
0.79 |
|
Spectral class |
F7V (yellow-white) |
|
| Pri motion ra |
+033 |
|
Sec motion ra |
|
|
| Pri motion dec |
-063 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 220077 |
|
Constellation |
Pegasus |
|
SAO |
108556 |
|
HIP |
115279 |
|
| Tycho2 |
1713-01289-1 |
|
Gaia DR2 |
2817697149759125504 |
|
HD |
220077 |
|
BD |
BD+15 4809 |
|
| Distance |
77.7 |
|
Distance ly |
253.46 |
|
ORBITAL ELEMENTS
| Period (P) | 35.46y | ± 0.27 |
Periastron (T) | 2003.12y | ± 0.22 |
Semi-major axis (a) | 0.173a | ± 0.006 |
| Eccentricity (e) | 0.658 | ± 0.092 |
Inclination (i) | 28.2° | ± 7.6 |
Longitude of periastron (ω) | 253.6° | ± 22.4 |
| Node (Ω) | 135.7° | ± 9 |
Notes | n | |
Reference | Cve2011a | |
| Equinox | 2000 | |
Last observation | 2007 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
282.5 |
0.122 |
| 2001 |
299.0 |
0.100 |
| 2002 |
326.0 |
0.075 |
| 2003 |
18.7 |
0.054 |
| 2004 |
84.2 |
0.064 |
| 2005 |
118.1 |
0.093 |
| 2006 |
135.9 |
0.121 |
| 2007 |
147.4 |
0.145 |
| 2008 |
155.8 |
0.165 |
| 2009 |
162.6 |
0.182 |
| 2010 |
168.2 |
0.197 |
| 2011 |
173.1 |
0.209 |
| 2012 |
177.5 |
0.220 |
| 2013 |
181.5 |
0.229 |
| 2014 |
185.2 |
0.237 |
| 2015 |
188.7 |
0.243 |
| 2016 |
192.1 |
0.248 |
| 2017 |
195.3 |
0.252 |
| 2018 |
198.4 |
0.254 |
| 2019 |
201.5 |
0.256 |
| 2020 |
204.6 |
0.256 |
| 2021 |
207.7 |
0.256 |
| 2022 |
210.8 |
0.254 |
| 2023 |
214.0 |
0.251 |
| 2024 |
217.2 |
0.248 |
| 2025 |
220.5 |
0.243 |
| 2026 |
224.0 |
0.237 |
| 2027 |
227.7 |
0.231 |
| 2028 |
231.6 |
0.223 |
| 2029 |
235.9 |
0.214 |
| 2030 |
240.5 |
0.204 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
