02563+7253 STF 312 AB (HD 17785)
02h 56m 11.32s +72° 53' 10.4" P.A. 48.00 sep 1.7 mag 8.16,8.92 Sp G0 dist. 65.96 pc (215.16 l.y.)
| Coord 2000 |
02563+7253 |
|
Discov num |
STF 312 |
|
Comp |
AB |
|
Coord arcsec 2000 |
02 56 11.32 +72 53 10.4 |
|
| Date first |
1830 |
|
Date last |
2018 |
|
Obs |
92 |
|
| Pa first |
10 |
|
Pa last |
48.3 |
|
P.A. Now (θ) |
48.3° |
|
| Sep first |
4.0 |
|
Sep last |
1.711 |
|
Sep. Now (ρ) |
1.711" |
|
| Mag pri |
8.16 |
|
Mag sec |
8.92 |
|
delta mag (ΔM) |
0.76 |
|
Spectral class |
G0 (yellow) |
|
| Pri motion ra |
+042 |
|
Sec motion ra |
+042 |
|
| Pri motion dec |
-051 |
|
Sec motion dec |
-051 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
02563+7253 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
HD 17785 |
4776 |
02 56 11 +72 53 10 |
STF 312 AB |
2018 |
92 |
48 |
1.7 |
8.16 |
8.92 |
0.76 |
Y |
<=== |
| Show |
|
4776 |
02 56 11 +72 53 10 |
STF 312 AC |
2016 |
35 |
132 |
43.0 |
8.16 |
10.14 |
1.98 |
|
|
| Show |
|
4776 |
02 56 11 +72 53 10 |
STF 312 AD |
2015 |
9 |
283 |
59.0 |
8.16 |
12.82 |
4.66 |
|
|
| Show |
|
|
02 56 12 +72 53 12 |
STF 312 BC |
2013 |
23 |
134 |
42.8 |
8.92 |
10.14 |
1.22 |
|
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Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 17785 |
|
Constellation |
Cassiopeia |
|
SAO |
4776 |
|
HIP |
13677 |
|
| Tycho2 |
4321-01378-1 |
|
Gaia DR2 |
547259480114344832 |
|
HD |
17785 |
|
GC |
3476 |
|
| ADS |
2204 |
|
BD |
BD+72 152 |
|
Distance |
65.96 |
|
Distance ly |
215.16 |
|
ORBITAL ELEMENTS
| Period (P) | 794.8864y | ± 546.8148 |
Periastron (T) | 1729.5747y | ± 63.2164 |
Semi-major axis (a) | 4.67346a | ± 2.46061 |
| Eccentricity (e) | 0.64023 | ± 0.24163 |
Inclination (i) | 80.76° | ± 5.499 |
Longitude of periastron (ω) | 273.927° | ± 31.082 |
| Node (Ω) | 7.578° | ± 4.711 |
Notes | | |
Reference | Izm2019 | |
| Equinox | | |
Last observation | 2013 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
41.6 |
1.980 |
| 2001 |
41.9 |
1.967 |
| 2002 |
42.3 |
1.955 |
| 2003 |
42.6 |
1.943 |
| 2004 |
42.9 |
1.931 |
| 2005 |
43.2 |
1.919 |
| 2006 |
43.6 |
1.907 |
| 2007 |
43.9 |
1.895 |
| 2008 |
44.2 |
1.883 |
| 2009 |
44.6 |
1.871 |
| 2010 |
44.9 |
1.860 |
| 2011 |
45.3 |
1.848 |
| 2012 |
45.7 |
1.836 |
| 2013 |
46.0 |
1.824 |
| 2014 |
46.4 |
1.813 |
| 2015 |
46.8 |
1.801 |
| 2016 |
47.1 |
1.789 |
| 2017 |
47.5 |
1.778 |
| 2018 |
47.9 |
1.766 |
| 2019 |
48.3 |
1.755 |
| 2020 |
48.7 |
1.744 |
| 2021 |
49.1 |
1.732 |
| 2022 |
49.5 |
1.721 |
| 2023 |
49.9 |
1.710 |
| 2024 |
50.4 |
1.699 |
| 2025 |
50.8 |
1.688 |
| 2026 |
51.2 |
1.677 |
| 2027 |
51.6 |
1.666 |
| 2028 |
52.1 |
1.655 |
| 2029 |
52.5 |
1.644 |
| 2030 |
53.0 |
1.633 |
|
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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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