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 |
|
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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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