00431+7659 HU 1012 (HD 3871)
00h 43m 03.47s +76° 59' 25.5" P.A. 121.00 sep 0.4 mag 9.83,9.71 Sp G5
| Coord 2000 |
00431+7659 |
|
Discov num |
HU 1012 |
|
Comp |
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Coord arcsec 2000 |
00 43 03.47 +76 59 25.5 |
|
| Date first |
1904 |
|
Date last |
2012 |
|
Obs |
17 |
|
| Pa first |
210 |
|
Pa last |
121.4 |
|
P.A. Now (θ) |
121.4° |
|
| Sep first |
0.5 |
|
Sep last |
0.432 |
|
Sep. Now (ρ) |
0.432" |
|
| Mag pri |
9.83 |
|
Mag sec |
9.71 |
|
delta mag (ΔM) |
0.12 |
|
Spectral class |
G5 (yellow) |
|
| Pri motion ra |
-021 |
|
Sec motion ra |
-021 |
|
| Pri motion dec |
-004 |
|
Sec motion dec |
-004 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 3871 |
|
Constellation |
Cassiopeia |
|
SAO |
4194 |
|
Tycho2 |
4497-00093-1 |
|
| HD |
3871 |
|
ADS |
584 |
|
ORBITAL ELEMENTS
| Period (P) | 580y | |
Periastron (T) | 1875y | |
Semi-major axis (a) | 1.17a | |
| Eccentricity (e) | 0.687 | |
Inclination (i) | 108.3° | |
Longitude of periastron (ω) | 121.1° | |
| Node (Ω) | 38.8° | |
Notes | | |
Reference | USN2002 | |
| Equinox | 2000 | |
Last observation | 1995 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
129.9 |
0.469 |
| 2001 |
129.1 |
0.471 |
| 2002 |
128.2 |
0.473 |
| 2003 |
127.3 |
0.475 |
| 2004 |
126.5 |
0.477 |
| 2005 |
125.6 |
0.479 |
| 2006 |
124.8 |
0.481 |
| 2007 |
123.9 |
0.484 |
| 2008 |
123.1 |
0.486 |
| 2009 |
122.3 |
0.488 |
| 2010 |
121.5 |
0.491 |
| 2011 |
120.7 |
0.494 |
| 2012 |
119.9 |
0.496 |
| 2013 |
119.1 |
0.499 |
| 2014 |
118.3 |
0.502 |
| 2015 |
117.6 |
0.505 |
| 2016 |
116.8 |
0.508 |
| 2017 |
116.1 |
0.511 |
| 2018 |
115.3 |
0.514 |
| 2019 |
114.6 |
0.517 |
| 2020 |
113.9 |
0.521 |
| 2021 |
113.2 |
0.524 |
| 2022 |
112.5 |
0.527 |
| 2023 |
111.8 |
0.531 |
| 2024 |
111.1 |
0.534 |
| 2025 |
110.4 |
0.538 |
| 2026 |
109.8 |
0.541 |
| 2027 |
109.1 |
0.545 |
| 2028 |
108.5 |
0.549 |
| 2029 |
107.8 |
0.552 |
| 2030 |
107.2 |
0.556 |
| 2031 |
106.6 |
0.560 |
| 2032 |
105.9 |
0.564 |
| 2033 |
105.3 |
0.567 |
| 2034 |
104.7 |
0.571 |
| 2035 |
104.2 |
0.575 |
| 2036 |
103.6 |
0.579 |
| 2037 |
103.0 |
0.583 |
| 2038 |
102.4 |
0.587 |
| 2039 |
101.9 |
0.592 |
| 2040 |
101.3 |
0.596 |
| 2041 |
100.8 |
0.600 |
| 2042 |
100.2 |
0.604 |
| 2043 |
99.7 |
0.608 |
| 2044 |
99.2 |
0.613 |
| 2045 |
98.7 |
0.617 |
| 2046 |
98.2 |
0.621 |
| 2047 |
97.7 |
0.625 |
| 2048 |
97.2 |
0.630 |
| 2049 |
96.7 |
0.634 |
| 2050 |
96.2 |
0.639 |
|
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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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