07380-3208 B 1554 (PU Pup)
07h 37m 57.57s -32° 07' 52.2" P.A. 313.00 sep 0.3 mag 6.99,8.72 Sp F2V dist. 110.99 pc (362.05 l.y.)
Coord 2000 |
07380-3208 |
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Discov num |
B 1554 |
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Comp |
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Coord arcsec 2000 |
07 37 57.57 -32 07 52.2 |
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Date first |
1930 |
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Date last |
2021 |
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Obs |
9 |
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Pa first |
331 |
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Pa last |
312.7 |
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P.A. Now (θ) |
312.7° |
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Sep first |
0.4 |
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Sep last |
0.262 |
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Sep. Now (ρ) |
0.262" |
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Mag pri |
6.99 |
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Mag sec |
8.72 |
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delta mag (ΔM) |
1.73 |
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Spectral class |
F2V (yellow-white) |
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Pri motion ra |
+005 |
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Sec motion ra |
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Pri motion dec |
-040 |
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Sec motion dec |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Var name |
PU Pup |
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Constellation |
Puppis |
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SAO |
198212 |
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HIP |
37145 |
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Tycho2 |
7109-03458-1 |
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Gaia DR2 |
5592250627190607488 |
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HD |
61431 |
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GC |
10261 |
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CD |
CD-31 4833 |
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CP |
CP-31 1720 |
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Distance |
110.99 |
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Distance ly |
362.05 |
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ORBITAL ELEMENTS
Period (P) | 113.8y | ± 5 |
Periastron (T) | 1984.2y | ± 3.3 |
Semi-major axis (a) | 0.228a | ± 0.011 |
Eccentricity (e) | 0.254 | ± 0.031 |
Inclination (i) | 68.7° | ± 4.2 |
Longitude of periastron (ω) | 356.7° | ± 4.4 |
Node (Ω) | 150.3° | ± 2.2 |
Notes | n | |
Reference | Msn2021c | |
Equinox | | |
Last observation | 2018 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
201.2 |
0.090 |
2001 |
208.7 |
0.085 |
2002 |
217.1 |
0.081 |
2003 |
226.1 |
0.079 |
2004 |
235.5 |
0.078 |
2005 |
244.9 |
0.079 |
2006 |
253.7 |
0.082 |
2007 |
261.8 |
0.087 |
2008 |
269.0 |
0.093 |
2009 |
275.3 |
0.099 |
2010 |
280.8 |
0.107 |
2011 |
285.5 |
0.115 |
2012 |
289.6 |
0.123 |
2013 |
293.1 |
0.132 |
2014 |
296.3 |
0.141 |
2015 |
299.0 |
0.149 |
2016 |
301.5 |
0.158 |
2017 |
303.6 |
0.167 |
2018 |
305.6 |
0.175 |
2019 |
307.4 |
0.183 |
2020 |
309.1 |
0.191 |
2021 |
310.6 |
0.199 |
2022 |
312.0 |
0.207 |
2023 |
313.3 |
0.214 |
2024 |
314.5 |
0.221 |
2025 |
315.7 |
0.228 |
2026 |
316.7 |
0.234 |
2027 |
317.8 |
0.240 |
2028 |
318.7 |
0.246 |
2029 |
319.7 |
0.251 |
2030 |
320.6 |
0.256 |
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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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