23072+6050 BU 180 AB
23h 07m 09.99s +60° 49' 57.1" P.A. 134.00 sep 0.5 mag 7.95,9.23 Sp A5IV dist. 255.75 pc (834.26 l.y.)
| Coord 2000 |
23072+6050 |
|
Discov num |
BU 180 |
|
Comp |
AB |
|
Coord arcsec 2000 |
23 07 09.99 +60 49 57.1 |
|
| Date first |
1873 |
|
Date last |
2016 |
|
Obs |
46 |
|
| Pa first |
200 |
|
Pa last |
134 |
|
P.A. Now (θ) |
134° |
|
| Sep first |
0.5 |
|
Sep last |
0.541 |
|
Sep. Now (ρ) |
0.541" |
|
| Mag pri |
7.95 |
|
Mag sec |
9.23 |
|
delta mag (ΔM) |
1.28 |
|
Spectral class |
A5IV (white) |
|
| Pri motion ra |
-005 |
|
Sec motion ra |
-005 |
|
| Pri motion dec |
-013 |
|
Sec motion dec |
-013 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
23072+6050 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
|
20432 |
23 07 10 +60 49 57 |
BU 180 AB |
2016 |
46 |
134 |
0.5 |
7.95 |
9.23 |
1.28 |
Y |
<=== |
| Show |
HD 218439 |
20432 |
23 07 10 +60 49 57 |
BU 180 AB,C |
2021 |
16 |
104 |
34.3 |
7.64 |
10.70 |
3.06 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Constellation |
Cepheus |
|
SAO |
20432 |
|
HIP |
114161 |
|
Tycho2 |
4278-00668-1 |
|
| Gaia DR2 |
2014819358131368960 |
|
HD |
218439 |
|
ADS |
16518 |
|
BD |
BD+60 2482 |
|
| Distance |
255.75 |
|
Distance ly |
834.26 |
|
ORBITAL ELEMENTS
| Period (P) | 537y | |
Periastron (T) | 2201.93y | |
Semi-major axis (a) | 0.517a | |
| Eccentricity (e) | 0.198 | |
Inclination (i) | 133.4° | |
Longitude of periastron (ω) | 180.4° | |
| Node (Ω) | 161.8° | |
Notes | | |
Reference | Lin2010c | |
| Equinox | 2000 | |
Last observation | 2006 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
138.9 |
0.553 |
| 2001 |
138.5 |
0.551 |
| 2002 |
138.1 |
0.549 |
| 2003 |
137.7 |
0.547 |
| 2004 |
137.3 |
0.545 |
| 2005 |
136.9 |
0.543 |
| 2006 |
136.5 |
0.541 |
| 2007 |
136.0 |
0.539 |
| 2008 |
135.6 |
0.537 |
| 2009 |
135.2 |
0.535 |
| 2010 |
134.8 |
0.533 |
| 2011 |
134.4 |
0.531 |
| 2012 |
133.9 |
0.529 |
| 2013 |
133.5 |
0.527 |
| 2014 |
133.1 |
0.524 |
| 2015 |
132.6 |
0.522 |
| 2016 |
132.2 |
0.520 |
| 2017 |
131.7 |
0.518 |
| 2018 |
131.3 |
0.516 |
| 2019 |
130.8 |
0.513 |
| 2020 |
130.4 |
0.511 |
| 2021 |
129.9 |
0.509 |
| 2022 |
129.4 |
0.506 |
| 2023 |
129.0 |
0.504 |
| 2024 |
128.5 |
0.502 |
| 2025 |
128.0 |
0.499 |
| 2026 |
127.5 |
0.497 |
| 2027 |
127.0 |
0.495 |
| 2028 |
126.5 |
0.492 |
| 2029 |
126.0 |
0.490 |
| 2030 |
125.5 |
0.488 |
| 2031 |
125.0 |
0.485 |
| 2032 |
124.5 |
0.483 |
| 2033 |
124.0 |
0.480 |
| 2034 |
123.4 |
0.478 |
| 2035 |
122.9 |
0.475 |
| 2036 |
122.4 |
0.473 |
| 2037 |
121.8 |
0.470 |
| 2038 |
121.3 |
0.468 |
| 2039 |
120.7 |
0.466 |
| 2040 |
120.2 |
0.463 |
| 2041 |
119.6 |
0.461 |
| 2042 |
119.0 |
0.458 |
| 2043 |
118.5 |
0.456 |
| 2044 |
117.9 |
0.453 |
| 2045 |
117.3 |
0.451 |
| 2046 |
116.7 |
0.448 |
| 2047 |
116.1 |
0.446 |
| 2048 |
115.5 |
0.443 |
| 2049 |
114.9 |
0.441 |
| 2050 |
114.2 |
0.438 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
|
|
