00516+2237 A 1808 (HD 4934)
00h 51m 36.99s +22° 37' 24.4" P.A. 195.00 sep 0.2 mag 7.93,8.22 Sp K0III dist. 254.45 pc (830.02 l.y.)
| Coord 2000 |
00516+2237 |
|
Discov num |
A 1808 |
|
Comp |
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Coord arcsec 2000 |
00 51 36.99 +22 37 24.4 |
|
| Date first |
1908 |
|
Date last |
2012 |
|
Obs |
57 |
|
| Pa first |
209 |
|
Pa last |
194.5 |
|
P.A. Now (θ) |
208.6° |
|
| Sep first |
0.2 |
|
Sep last |
0.197 |
|
Sep. Now (ρ) |
0.212" |
|
| Mag pri |
7.93 |
|
Mag sec |
8.22 |
|
delta mag (ΔM) |
0.29 |
|
Spectral class |
K0III (yellow-orange) |
|
| Pri motion ra |
+012 |
|
Sec motion ra |
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|
| Pri motion dec |
+002 |
|
Sec motion dec |
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| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 4934 |
|
Constellation |
Andromeda |
|
SAO |
74322 |
|
HIP |
4030 |
|
| Tycho2 |
1739-00186-1 |
|
Gaia DR2 |
2802279419757750144 |
|
HD |
4934 |
|
GC |
1028 |
|
| ADS |
701 |
|
BD |
BD+21 111 |
|
Distance |
254.45 |
|
Distance ly |
830.02 |
|
ORBITAL ELEMENTS
| Period (P) | 112.4y | |
Periastron (T) | 1975.99y | |
Semi-major axis (a) | 0.121a | |
| Eccentricity (e) | 0.827 | |
Inclination (i) | 17.8° | |
Longitude of periastron (ω) | 231.9° | |
| Node (Ω) | 163.1° | |
Notes | n | |
Reference | Doc2005b | |
| Equinox | 2000 | |
Last observation | 2004 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
193.0 |
0.167 |
| 2001 |
193.9 |
0.170 |
| 2002 |
194.8 |
0.173 |
| 2003 |
195.6 |
0.176 |
| 2004 |
196.4 |
0.179 |
| 2005 |
197.2 |
0.182 |
| 2006 |
197.9 |
0.184 |
| 2007 |
198.6 |
0.187 |
| 2008 |
199.4 |
0.189 |
| 2009 |
200.0 |
0.191 |
| 2010 |
200.7 |
0.194 |
| 2011 |
201.4 |
0.196 |
| 2012 |
202.0 |
0.197 |
| 2013 |
202.7 |
0.199 |
| 2014 |
203.3 |
0.201 |
| 2015 |
203.9 |
0.203 |
| 2016 |
204.5 |
0.204 |
| 2017 |
205.1 |
0.205 |
| 2018 |
205.7 |
0.207 |
| 2019 |
206.3 |
0.208 |
| 2020 |
206.9 |
0.209 |
| 2021 |
207.4 |
0.210 |
| 2022 |
208.0 |
0.211 |
| 2023 |
208.6 |
0.212 |
| 2024 |
209.1 |
0.212 |
| 2025 |
209.7 |
0.213 |
| 2026 |
210.2 |
0.213 |
| 2027 |
210.8 |
0.214 |
| 2028 |
211.3 |
0.214 |
| 2029 |
211.9 |
0.214 |
| 2030 |
212.4 |
0.215 |
| 2031 |
213.0 |
0.215 |
| 2032 |
213.5 |
0.215 |
| 2033 |
214.1 |
0.214 |
| 2034 |
214.6 |
0.214 |
| 2035 |
215.2 |
0.214 |
| 2036 |
215.7 |
0.214 |
| 2037 |
216.3 |
0.213 |
| 2038 |
216.8 |
0.212 |
| 2039 |
217.4 |
0.212 |
| 2040 |
217.9 |
0.211 |
| 2041 |
218.5 |
0.210 |
| 2042 |
219.1 |
0.209 |
| 2043 |
219.7 |
0.208 |
| 2044 |
220.2 |
0.207 |
| 2045 |
220.8 |
0.206 |
| 2046 |
221.4 |
0.205 |
| 2047 |
222.0 |
0.203 |
| 2048 |
222.6 |
0.202 |
| 2049 |
223.3 |
0.200 |
| 2050 |
223.9 |
0.198 |
|
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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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