00028+0208 BU 281 AB (HD 225028)
00h 02m 47.14s +02° 07' 49.4" P.A. 159.00 sep 1.6 mag 7.40,9.36 Sp F2V dist. 42.63 pc (139.06 l.y.)
| Coord 2000 |
00028+0208 |
|
Discov num |
BU 281 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 02 47.14 +02 07 49.4 |
|
| Date first |
1877 |
|
Date last |
2017 |
|
Obs |
71 |
|
| Pa first |
217 |
|
Pa last |
159.4 |
|
P.A. Now (θ) |
159.4° |
|
| Sep first |
1.1 |
|
Sep last |
1.585 |
|
Sep. Now (ρ) |
1.585" |
|
| Mag pri |
7.40 |
|
Mag sec |
9.36 |
|
delta mag (ΔM) |
1.96 |
|
Spectral class |
F2V (yellow-white) |
|
| Pri motion ra |
+062 |
|
Sec motion ra |
+062 |
|
| Pri motion dec |
-094 |
|
Sec motion dec |
-094 |
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
00028+0208 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 225028 |
108983 |
00 02 47 +02 07 49 |
BU 281 AB |
2017 |
71 |
159 |
1.6 |
7.40 |
9.36 |
1.96 |
Y |
<=== |
| Show |
|
108983 |
00 02 47 +02 07 49 |
HJ 998 AC |
2016 |
20 |
329 |
46.3 |
7.40 |
12.38 |
4.98 |
|
|
Triple system
3 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 225028 |
|
Constellation |
Pisces |
|
SAO |
108983 |
|
HIP |
223 |
|
| Tycho2 |
0001-00903-1 |
|
Gaia DR2 |
2739059700184753280 |
|
HD |
225028 |
|
ADS |
9 |
|
| BD |
BD+01 4820 |
|
Distance |
42.63 |
|
Distance ly |
139.06 |
|
ORBITAL ELEMENTS
| Period (P) | 1117y | |
Periastron (T) | 2077.5y | |
Semi-major axis (a) | 3.14a | |
| Eccentricity (e) | 0.639 | |
Inclination (i) | 108.5° | |
Longitude of periastron (ω) | 55.7° | |
| Node (Ω) | 149.9° | |
Notes | n | |
Reference | Lin2015a | |
| Equinox | 2000 | |
Last observation | 2014 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
164.9 |
1.572 |
| 2001 |
164.6 |
1.573 |
| 2002 |
164.3 |
1.573 |
| 2003 |
164.0 |
1.573 |
| 2004 |
163.6 |
1.573 |
| 2005 |
163.3 |
1.573 |
| 2006 |
163.0 |
1.573 |
| 2007 |
162.7 |
1.572 |
| 2008 |
162.4 |
1.571 |
| 2009 |
162.1 |
1.570 |
| 2010 |
161.8 |
1.569 |
| 2011 |
161.4 |
1.568 |
| 2012 |
161.1 |
1.566 |
| 2013 |
160.8 |
1.564 |
| 2014 |
160.5 |
1.562 |
| 2015 |
160.2 |
1.560 |
| 2016 |
159.9 |
1.558 |
| 2017 |
159.5 |
1.555 |
| 2018 |
159.2 |
1.552 |
| 2019 |
158.9 |
1.549 |
| 2020 |
158.6 |
1.546 |
| 2021 |
158.2 |
1.542 |
| 2022 |
157.9 |
1.538 |
| 2023 |
157.6 |
1.534 |
| 2024 |
157.3 |
1.529 |
| 2025 |
156.9 |
1.524 |
| 2026 |
156.6 |
1.519 |
| 2027 |
156.2 |
1.514 |
| 2028 |
155.9 |
1.508 |
| 2029 |
155.6 |
1.502 |
| 2030 |
155.2 |
1.496 |
| 2031 |
154.9 |
1.489 |
| 2032 |
154.5 |
1.482 |
| 2033 |
154.2 |
1.475 |
| 2034 |
153.8 |
1.467 |
| 2035 |
153.4 |
1.459 |
| 2036 |
153.1 |
1.450 |
| 2037 |
152.7 |
1.442 |
| 2038 |
152.3 |
1.432 |
| 2039 |
152.0 |
1.423 |
| 2040 |
151.6 |
1.413 |
| 2041 |
151.2 |
1.402 |
| 2042 |
150.8 |
1.391 |
| 2043 |
150.4 |
1.380 |
| 2044 |
150.0 |
1.368 |
| 2045 |
149.5 |
1.356 |
| 2046 |
149.1 |
1.343 |
| 2047 |
148.7 |
1.330 |
| 2048 |
148.2 |
1.316 |
| 2049 |
147.8 |
1.302 |
| 2050 |
147.3 |
1.287 |
|
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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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