07201+2159 STF 1066 (Wasat)
07h 20m 07.39s +21° 58' 56.4" P.A. 229.00 sep 5.5 mag 3.55,8.18 Sp F2V+K6V dist. 18.54 pc (60.48 l.y.)
| Coord 2000 |
07201+2159 |
|
Discov num |
STF1066 |
|
Comp |
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Coord arcsec 2000 |
07 20 07.39 +21 58 56.4 |
|
| Date first |
1822 |
|
Date last |
2018 |
|
Obs |
274 |
|
| Pa first |
198 |
|
Pa last |
228.9 |
|
P.A. Now (θ) |
228.9° |
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| Sep first |
7.1 |
|
Sep last |
5.541 |
|
Sep. Now (ρ) |
5.541" |
|
| Mag pri |
3.55 |
|
Mag sec |
8.18 |
|
delta mag (ΔM) |
4.63 |
|
Spectral class |
F2V+K6V (yellow-white/yellow-orange) |
|
| Pri motion ra |
-028 |
|
Sec motion ra |
-028 |
|
| Pri motion dec |
-015 |
|
Sec motion dec |
-013 |
|
| Notes |
N
O
T
(See Notes, Orbital solution, Parallax indicates physical) |
|
rPM=0.063 (< 0.3, Physical double)
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Common name |
Wasat |
|
Constellation |
Gemini |
|
SAO |
79294 |
|
HIP |
35550 |
|
| Tycho2 |
1359-02672-1 |
|
Gaia DR2 |
866177431953646464 |
|
HD |
56986 |
|
HR |
2777 |
|
| GC |
9755 |
|
ADS |
5983 |
|
GL |
Gl 271A |
|
BD |
BD+22 1645 |
|
| Bayer |
Delta Geminorum |
|
Bayer name |
Del Gem |
|
Flamsteed |
55 Geminorum |
|
Flamsteed name |
55 Gem |
|
| FK5 |
279 |
|
Distance |
18.54 |
|
Distance ly |
60.48 |
|
Bayer greek |
δ Gem |
|
| Meaning |
the center of the sky |
|
ORBITAL ELEMENTS
| Period (P) | 1418.4375y | ± 625.7623 |
Periastron (T) | 2150.9833y | ± 47.4472 |
Semi-major axis (a) | 7.76117a | ± 2.62776 |
| Eccentricity (e) | 0.70913 | ± 0.24789 |
Inclination (i) | 51.036° | ± 13.893 |
Longitude of periastron (ω) | 268.361° | ± 11.904 |
| Node (Ω) | 70.828° | ± 34.531 |
Notes | n | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
224.9 |
5.827 |
| 2001 |
225.1 |
5.812 |
| 2002 |
225.3 |
5.796 |
| 2003 |
225.5 |
5.781 |
| 2004 |
225.7 |
5.765 |
| 2005 |
225.9 |
5.750 |
| 2006 |
226.1 |
5.734 |
| 2007 |
226.3 |
5.718 |
| 2008 |
226.5 |
5.702 |
| 2009 |
226.7 |
5.686 |
| 2010 |
227.0 |
5.669 |
| 2011 |
227.2 |
5.653 |
| 2012 |
227.4 |
5.637 |
| 2013 |
227.6 |
5.620 |
| 2014 |
227.8 |
5.603 |
| 2015 |
228.0 |
5.586 |
| 2016 |
228.2 |
5.569 |
| 2017 |
228.5 |
5.552 |
| 2018 |
228.7 |
5.535 |
| 2019 |
228.9 |
5.517 |
| 2020 |
229.1 |
5.499 |
| 2021 |
229.4 |
5.482 |
| 2022 |
229.6 |
5.464 |
| 2023 |
229.8 |
5.446 |
| 2024 |
230.0 |
5.427 |
| 2025 |
230.3 |
5.409 |
| 2026 |
230.5 |
5.391 |
| 2027 |
230.7 |
5.372 |
| 2028 |
231.0 |
5.353 |
| 2029 |
231.2 |
5.334 |
| 2030 |
231.4 |
5.315 |
| 2031 |
231.7 |
5.296 |
| 2032 |
231.9 |
5.276 |
| 2033 |
232.2 |
5.257 |
| 2034 |
232.4 |
5.237 |
| 2035 |
232.7 |
5.217 |
| 2036 |
232.9 |
5.197 |
| 2037 |
233.2 |
5.176 |
| 2038 |
233.4 |
5.156 |
| 2039 |
233.7 |
5.135 |
| 2040 |
233.9 |
5.114 |
| 2041 |
234.2 |
5.093 |
| 2042 |
234.5 |
5.072 |
| 2043 |
234.7 |
5.050 |
| 2044 |
235.0 |
5.029 |
| 2045 |
235.3 |
5.007 |
| 2046 |
235.5 |
4.985 |
| 2047 |
235.8 |
4.962 |
| 2048 |
236.1 |
4.940 |
| 2049 |
236.4 |
4.917 |
| 2050 |
236.6 |
4.894 |
|
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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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