04496-5353 I 342 (HD 31027)
04h 49m 37.05s -53° 52' 53.4" P.A. 133.00 sep 3.2 mag 8.28,8.77 Sp K1V dist. 29.87 pc (97.44 l.y.)
| Coord 2000 |
04496-5353 |
|
Discov num |
I 342 |
|
Comp |
|
|
Coord arcsec 2000 |
04 49 37.05 -53 52 53.4 |
|
| Date first |
1901 |
|
Date last |
2016 |
|
Obs |
50 |
|
| Pa first |
176 |
|
Pa last |
133.2 |
|
P.A. Now (θ) |
133.2° |
|
| Sep first |
1.0 |
|
Sep last |
3.24 |
|
Sep. Now (ρ) |
3.24" |
|
| Mag pri |
8.28 |
|
Mag sec |
8.77 |
|
delta mag (ΔM) |
0.49 |
|
Spectral class |
K1V (yellow-orange) |
|
| Pri motion ra |
+135 |
|
Sec motion ra |
|
|
| Pri motion dec |
+232 |
|
Sec motion dec |
|
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 31027 |
|
Constellation |
Dorado |
|
SAO |
233697 |
|
HIP |
22431 |
|
| Tycho2 |
8510-00832-1 |
|
Gaia DR2 |
4777123623183866240 |
|
HD |
31027 |
|
GC |
5908 |
|
| CD |
CD-54 962 |
|
CP |
CP-54 718 |
|
Distance |
29.87 |
|
Distance ly |
97.44 |
|
ORBITAL ELEMENTS
| Period (P) | 868.05y | ± 19.71 |
Periastron (T) | 2743.45y | ± 2.01 |
Semi-major axis (a) | 3.827a | ± 0.168 |
| Eccentricity (e) | 0.915 | ± 0.064 |
Inclination (i) | 127° | ± 1.7 |
Longitude of periastron (ω) | 127.3° | ± 4.7 |
| Node (Ω) | 74.6° | ± 2.7 |
Notes | | |
Reference | Cve2008a | |
| Equinox | 2000 | |
Last observation | 2001 | |
Grade | 5 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
135.9 |
2.999 |
| 2001 |
135.8 |
3.015 |
| 2002 |
135.6 |
3.031 |
| 2003 |
135.5 |
3.047 |
| 2004 |
135.3 |
3.062 |
| 2005 |
135.1 |
3.078 |
| 2006 |
135.0 |
3.094 |
| 2007 |
134.8 |
3.110 |
| 2008 |
134.7 |
3.125 |
| 2009 |
134.5 |
3.141 |
| 2010 |
134.4 |
3.156 |
| 2011 |
134.2 |
3.172 |
| 2012 |
134.1 |
3.187 |
| 2013 |
133.9 |
3.202 |
| 2014 |
133.8 |
3.218 |
| 2015 |
133.7 |
3.233 |
| 2016 |
133.5 |
3.248 |
| 2017 |
133.4 |
3.263 |
| 2018 |
133.2 |
3.278 |
| 2019 |
133.1 |
3.293 |
| 2020 |
133.0 |
3.308 |
| 2021 |
132.8 |
3.322 |
| 2022 |
132.7 |
3.337 |
| 2023 |
132.6 |
3.352 |
| 2024 |
132.4 |
3.367 |
| 2025 |
132.3 |
3.381 |
| 2026 |
132.2 |
3.396 |
| 2027 |
132.1 |
3.410 |
| 2028 |
131.9 |
3.424 |
| 2029 |
131.8 |
3.439 |
| 2030 |
131.7 |
3.453 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
