23175+1652 HU 497 BC
23h 17m 31.11s +16° 51' 37.0" P.A. 62.00 sep 0.2 mag 9.50,10.00 Sp F2III dist. 148.37 pc (483.98 l.y.)
| Coord 2000 |
23175+1652 |
|
Discov num |
HU 497 |
|
Comp |
BC |
|
Coord arcsec 2000 |
23 17 31.11 +16 51 37.0 |
|
| Date first |
1901 |
|
Date last |
2018 |
|
Obs |
25 |
|
| Pa first |
241 |
|
Pa last |
62.3 |
|
P.A. Now (θ) |
62.3° |
|
| Sep first |
0.4 |
|
Sep last |
0.245 |
|
Sep. Now (ρ) |
0.245" |
|
| Mag pri |
9.50 |
|
Mag sec |
10.00 |
|
delta mag (ΔM) |
0.5 |
|
Spectral class |
F2III (yellow-white) |
|
| Pri motion ra |
+008 |
|
Sec motion ra |
+008 |
|
| Pri motion dec |
-022 |
|
Sec motion dec |
-022 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
23175+1652 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 219669 |
|
23 17 31 +16 51 37 |
HLD 171 A,BC |
2018 |
47 |
21 |
2.0 |
9.19 |
10.20 |
1.01 |
|
|
| Show |
|
108512 |
23 17 31 +16 51 37 |
HU 497 BC |
2018 |
25 |
62 |
0.2 |
9.50 |
10.00 |
0.50 |
Y |
<=== |
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Pegasus |
|
SAO |
108512 |
|
HIP |
115002 |
|
Tycho2 |
1713-01069-2 |
|
| Gaia DR2 |
2817878878416647040 |
|
HD |
219669 |
|
ADS |
16648 |
|
BD |
BD+16 4896 |
|
| Distance |
148.37 |
|
Distance ly |
483.98 |
|
ORBITAL ELEMENTS
| Period (P) | 180.6y | |
Periastron (T) | 2032.45y | |
Semi-major axis (a) | 0.292a | |
| Eccentricity (e) | 0.313 | |
Inclination (i) | 117.1° | |
Longitude of periastron (ω) | 54.2° | |
| Node (Ω) | 62.4° | |
Notes | | |
Reference | Lin2010c | |
| Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
88.2 |
0.213 |
| 2001 |
86.6 |
0.216 |
| 2002 |
85.1 |
0.218 |
| 2003 |
83.5 |
0.221 |
| 2004 |
82.0 |
0.223 |
| 2005 |
80.6 |
0.225 |
| 2006 |
79.1 |
0.227 |
| 2007 |
77.7 |
0.228 |
| 2008 |
76.3 |
0.229 |
| 2009 |
74.9 |
0.230 |
| 2010 |
73.5 |
0.231 |
| 2011 |
72.2 |
0.231 |
| 2012 |
70.8 |
0.231 |
| 2013 |
69.4 |
0.231 |
| 2014 |
68.0 |
0.230 |
| 2015 |
66.6 |
0.229 |
| 2016 |
65.2 |
0.227 |
| 2017 |
63.8 |
0.225 |
| 2018 |
62.3 |
0.222 |
| 2019 |
60.8 |
0.219 |
| 2020 |
59.2 |
0.216 |
| 2021 |
57.6 |
0.212 |
| 2022 |
56.0 |
0.208 |
| 2023 |
54.2 |
0.203 |
| 2024 |
52.4 |
0.198 |
| 2025 |
50.4 |
0.192 |
| 2026 |
48.4 |
0.186 |
| 2027 |
46.2 |
0.179 |
| 2028 |
43.8 |
0.172 |
| 2029 |
41.2 |
0.165 |
| 2030 |
38.4 |
0.157 |
|
|
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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