04041+3931 STF 483 (HD 25444)
04h 04m 07.10s +39° 30' 35.0" P.A. 53.00 sep 1.6 mag 7.38,9.35 Sp G5 dist. 32.36 pc (105.56 l.y.)
| Coord 2000 |
04041+3931 |
|
Discov num |
STF 483 |
|
Comp |
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Coord arcsec 2000 |
04 04 07.10 +39 30 35.0 |
|
| Date first |
1830 |
|
Date last |
2018 |
|
Obs |
141 |
|
| Pa first |
12 |
|
Pa last |
52.6 |
|
P.A. Now (θ) |
50.1° |
|
| Sep first |
2.8 |
|
Sep last |
1.606 |
|
Sep. Now (ρ) |
1.682" |
|
| Mag pri |
7.38 |
|
Mag sec |
9.35 |
|
delta mag (ΔM) |
1.97 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
+142 |
|
Sec motion ra |
+142 |
|
| Pri motion dec |
-098 |
|
Sec motion dec |
-098 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 25444 |
|
Constellation |
Perseus |
|
SAO |
56936 |
|
HIP |
18986 |
|
| Tycho2 |
2881-00090-1 |
|
Gaia DR2 |
226778843075710976 |
|
HD |
25444 |
|
GC |
4872 |
|
| ADS |
2959 |
|
BD |
BD+39 918 |
|
Distance |
32.36 |
|
Distance ly |
105.56 |
|
ORBITAL ELEMENTS
| Period (P) | 495.65y | |
Periastron (T) | 1909.98y | |
Semi-major axis (a) | 2.482a | |
| Eccentricity (e) | 0.706 | |
Inclination (i) | 110.8° | |
Longitude of periastron (ω) | 321.1° | |
| Node (Ω) | 190.2° | |
Notes | | |
Reference | USN2006b | |
| Equinox | 2000 | |
Last observation | 2003 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
62.2 |
1.268 |
| 2001 |
61.5 |
1.286 |
| 2002 |
60.9 |
1.304 |
| 2003 |
60.2 |
1.322 |
| 2004 |
59.6 |
1.340 |
| 2005 |
59.0 |
1.358 |
| 2006 |
58.4 |
1.376 |
| 2007 |
57.8 |
1.394 |
| 2008 |
57.2 |
1.412 |
| 2009 |
56.7 |
1.430 |
| 2010 |
56.1 |
1.448 |
| 2011 |
55.6 |
1.466 |
| 2012 |
55.1 |
1.484 |
| 2013 |
54.6 |
1.502 |
| 2014 |
54.1 |
1.520 |
| 2015 |
53.6 |
1.538 |
| 2016 |
53.1 |
1.556 |
| 2017 |
52.7 |
1.574 |
| 2018 |
52.2 |
1.592 |
| 2019 |
51.8 |
1.610 |
| 2020 |
51.3 |
1.628 |
| 2021 |
50.9 |
1.646 |
| 2022 |
50.5 |
1.664 |
| 2023 |
50.1 |
1.682 |
| 2024 |
49.7 |
1.700 |
| 2025 |
49.3 |
1.717 |
| 2026 |
48.9 |
1.735 |
| 2027 |
48.6 |
1.753 |
| 2028 |
48.2 |
1.771 |
| 2029 |
47.9 |
1.788 |
| 2030 |
47.5 |
1.806 |
|
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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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