00287+3718 A 1504 AB (HD 2471)
00h 28m 40.87s +37° 18' 14.9" P.A. 46.00 sep 0.6 mag 8.84,8.92 Sp A5 dist. 240.96 pc (786.01 l.y.)
| Coord 2000 |
00287+3718 |
|
Discov num |
A 1504 |
|
Comp |
AB |
|
Coord arcsec 2000 |
00 28 40.87 +37 18 14.9 |
|
| Date first |
1907 |
|
Date last |
2018 |
|
Obs |
57 |
|
| Pa first |
358 |
|
Pa last |
45.8 |
|
P.A. Now (θ) |
45.8° |
|
| Sep first |
0.3 |
|
Sep last |
0.59 |
|
Sep. Now (ρ) |
0.59" |
|
| Mag pri |
8.84 |
|
Mag sec |
8.92 |
|
delta mag (ΔM) |
0.08 |
|
Spectral class |
A5 (white) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
+004 |
|
| Pri motion dec |
-006 |
|
Sec motion dec |
-006 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
00287+3718 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 2471 |
53925 |
00 28 41 +37 18 15 |
A 1504 AB |
2018 |
57 |
46 |
0.6 |
8.84 |
8.92 |
0.08 |
Y |
<=== |
| Show |
|
53925 |
00 28 41 +37 18 15 |
A 1504 AB,C |
2014 |
8 |
102 |
7.6 |
8.13 |
13.50 |
5.37 |
|
|
Triple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 2471 |
|
Constellation |
Andromeda |
|
SAO |
53925 |
|
HIP |
2252 |
|
| Tycho2 |
2274-01419-1 |
|
HD |
2471 |
|
ADS |
382 |
|
BD |
BD+36 62 |
|
| Distance |
240.96 |
|
Distance ly |
786.01 |
|
ORBITAL ELEMENTS
| Period (P) | 977y | |
Periastron (T) | 2071y | |
Semi-major axis (a) | 0.843a | |
| Eccentricity (e) | 0.29 | |
Inclination (i) | 70.2° | |
Longitude of periastron (ω) | 17.6° | |
| Node (Ω) | 51.9° | |
Notes | | |
Reference | Zir2014a | |
| Equinox | 2000 | |
Last observation | 2009 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
41.0 |
0.571 |
| 2001 |
41.3 |
0.573 |
| 2002 |
41.5 |
0.575 |
| 2003 |
41.8 |
0.577 |
| 2004 |
42.0 |
0.578 |
| 2005 |
42.3 |
0.580 |
| 2006 |
42.5 |
0.581 |
| 2007 |
42.8 |
0.583 |
| 2008 |
43.0 |
0.585 |
| 2009 |
43.3 |
0.586 |
| 2010 |
43.5 |
0.587 |
| 2011 |
43.8 |
0.589 |
| 2012 |
44.0 |
0.590 |
| 2013 |
44.3 |
0.591 |
| 2014 |
44.5 |
0.593 |
| 2015 |
44.8 |
0.594 |
| 2016 |
45.0 |
0.595 |
| 2017 |
45.2 |
0.596 |
| 2018 |
45.5 |
0.597 |
| 2019 |
45.7 |
0.598 |
| 2020 |
45.9 |
0.599 |
| 2021 |
46.2 |
0.600 |
| 2022 |
46.4 |
0.601 |
| 2023 |
46.7 |
0.602 |
| 2024 |
46.9 |
0.602 |
| 2025 |
47.1 |
0.603 |
| 2026 |
47.4 |
0.604 |
| 2027 |
47.6 |
0.604 |
| 2028 |
47.8 |
0.605 |
| 2029 |
48.1 |
0.605 |
| 2030 |
48.3 |
0.606 |
|
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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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