23104+4901 STF 2987 (HD 218790)
23h 10m 21.28s +49° 01' 06.0" P.A. 149.00 sep 4.2 mag 7.42,10.41 Sp G1V dist. 45.39 pc (148.06 l.y.)
| Coord 2000 |
23104+4901 |
|
Discov num |
STF2987 |
|
Comp |
|
|
Coord arcsec 2000 |
23 10 21.28 +49 01 06.0 |
|
| Date first |
1828 |
|
Date last |
2022 |
|
Obs |
47 |
|
| Pa first |
172 |
|
Pa last |
149 |
|
P.A. Now (θ) |
149° |
|
| Sep first |
2.8 |
|
Sep last |
4.16 |
|
Sep. Now (ρ) |
4.16" |
|
| Mag pri |
7.42 |
|
Mag sec |
10.41 |
|
delta mag (ΔM) |
2.99 |
|
Spectral class |
G1V (yellow) |
|
| Pri motion ra |
+232 |
|
Sec motion ra |
+237 |
|
| Pri motion dec |
+056 |
|
Sec motion dec |
+052 |
|
| Notes |
N
O
V
(See Notes, Orbital solution, Proper motion indicates physical) |
|
rPM=0.026 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 218790 |
|
Constellation |
Andromeda |
|
SAO |
52759 |
|
HIP |
114420 |
|
| Tycho2 |
3631-01135-1 |
|
Gaia DR2 |
1990678072815187840 |
|
HD |
218790 |
|
GC |
32283 |
|
| ADS |
16562 |
|
BD |
BD+48 3952 |
|
Distance |
45.39 |
|
Distance ly |
148.06 |
|
ORBITAL ELEMENTS
| Period (P) | 2176.7924y | ± 963.9942 |
Periastron (T) | 1740.757y | ± 265.6893 |
Semi-major axis (a) | 8.12352a | ± 4.13838 |
| Eccentricity (e) | 0.85736 | ± 0.11548 |
Inclination (i) | 105.825° | ± 7.753 |
Longitude of periastron (ω) | 94.316° | ± 12.222 |
| Node (Ω) | 0.967° | ± 39.346 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2015 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
151.4 |
4.164 |
| 2001 |
151.3 |
4.166 |
| 2002 |
151.2 |
4.167 |
| 2003 |
151.1 |
4.168 |
| 2004 |
151.0 |
4.169 |
| 2005 |
150.9 |
4.170 |
| 2006 |
150.9 |
4.171 |
| 2007 |
150.8 |
4.172 |
| 2008 |
150.7 |
4.174 |
| 2009 |
150.6 |
4.175 |
| 2010 |
150.5 |
4.176 |
| 2011 |
150.4 |
4.177 |
| 2012 |
150.3 |
4.178 |
| 2013 |
150.2 |
4.178 |
| 2014 |
150.2 |
4.179 |
| 2015 |
150.1 |
4.180 |
| 2016 |
150.0 |
4.181 |
| 2017 |
149.9 |
4.182 |
| 2018 |
149.8 |
4.183 |
| 2019 |
149.7 |
4.184 |
| 2020 |
149.6 |
4.185 |
| 2021 |
149.5 |
4.185 |
| 2022 |
149.5 |
4.186 |
| 2023 |
149.4 |
4.187 |
| 2024 |
149.3 |
4.188 |
| 2025 |
149.2 |
4.188 |
| 2026 |
149.1 |
4.189 |
| 2027 |
149.0 |
4.190 |
| 2028 |
148.9 |
4.191 |
| 2029 |
148.8 |
4.191 |
| 2030 |
148.8 |
4.192 |
| 2031 |
148.7 |
4.192 |
| 2032 |
148.6 |
4.193 |
| 2033 |
148.5 |
4.194 |
| 2034 |
148.4 |
4.194 |
| 2035 |
148.3 |
4.195 |
| 2036 |
148.2 |
4.195 |
| 2037 |
148.2 |
4.196 |
| 2038 |
148.1 |
4.196 |
| 2039 |
148.0 |
4.197 |
| 2040 |
147.9 |
4.197 |
| 2041 |
147.8 |
4.198 |
| 2042 |
147.7 |
4.198 |
| 2043 |
147.6 |
4.199 |
| 2044 |
147.5 |
4.199 |
| 2045 |
147.5 |
4.200 |
| 2046 |
147.4 |
4.200 |
| 2047 |
147.3 |
4.200 |
| 2048 |
147.2 |
4.201 |
| 2049 |
147.1 |
4.201 |
| 2050 |
147.0 |
4.202 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
Measures: green=micrometric, blue=interferometric, purple=photographic
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