00416+2438 WRH 28 (NSV258)
00h 41m 35.98s +24° 37' 44.6" P.A. 302.00 sep 0.1 mag 6.06, Sp A7m dist. 126.74 pc (413.43 l.y.)
| Coord 2000 |
00416+2438 |
|
Discov num |
WRH 28 |
|
Comp |
|
|
Coord arcsec 2000 |
00 41 35.98 +24 37 44.6 |
|
| Date first |
1980 |
|
Date last |
2005 |
|
Obs |
8 |
|
| Pa first |
179 |
|
Pa last |
302.1 |
|
P.A. Now (θ) |
302.1° |
|
| Sep first |
0.2 |
|
Sep last |
0.066 |
|
Sep. Now (ρ) |
0.066" |
|
| Mag pri |
6.06 |
|
Mag sec |
|
|
delta mag (ΔM) |
|
|
Spectral class |
A7m (white) |
|
| Pri motion ra |
+107 |
|
Sec motion ra |
|
|
| Pri motion dec |
-016 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Var name |
NSV258 |
|
Constellation |
Andromeda |
|
SAO |
74200 |
|
HIP |
3269 |
|
| Tycho2 |
1738-01977-1 |
|
Gaia DR2 |
2806529032199025536 |
|
HD |
3883 |
|
HR |
178 |
|
| GC |
822 |
|
BD |
BD+23 94 |
|
FK5 |
2044 |
|
Distance |
126.74 |
|
| Distance ly |
413.43 |
|
ORBITAL ELEMENTS
| Period (P) | 21.26y | ± 0.94 |
Periastron (T) | 1993.02y | ± 0.56 |
Semi-major axis (a) | 0.126a | ± 0.006 |
| Eccentricity (e) | 0.5 | ± 0.04 |
Inclination (i) | 33.4° | ± 3.6 |
Longitude of periastron (ω) | 230.5° | ± 8 |
| Node (Ω) | 145.7° | ± 6.7 |
Notes | n | |
Reference | Ole2005c | |
| Equinox | 2000 | |
Last observation | 1988 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
167.2 |
0.168 |
| 2001 |
173.9 |
0.172 |
| 2002 |
180.3 |
0.174 |
| 2003 |
186.8 |
0.173 |
| 2004 |
193.4 |
0.170 |
| 2005 |
200.4 |
0.164 |
| 2006 |
207.8 |
0.157 |
| 2007 |
216.1 |
0.149 |
| 2008 |
225.5 |
0.139 |
| 2009 |
236.5 |
0.128 |
| 2010 |
249.6 |
0.116 |
| 2011 |
265.8 |
0.104 |
| 2012 |
286.3 |
0.091 |
| 2013 |
313.8 |
0.077 |
| 2014 |
355.3 |
0.061 |
| 2015 |
56.3 |
0.057 |
| 2016 |
101.2 |
0.079 |
| 2017 |
124.5 |
0.105 |
| 2018 |
138.9 |
0.127 |
| 2019 |
149.4 |
0.145 |
| 2020 |
157.9 |
0.157 |
| 2021 |
165.3 |
0.166 |
| 2022 |
172.2 |
0.171 |
| 2023 |
178.7 |
0.174 |
| 2024 |
185.1 |
0.173 |
| 2025 |
191.7 |
0.171 |
| 2026 |
198.5 |
0.166 |
| 2027 |
205.8 |
0.159 |
| 2028 |
213.9 |
0.151 |
| 2029 |
223.0 |
0.141 |
| 2030 |
233.5 |
0.131 |
|
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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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