07461+2107 HO 247 (HD 62720)
07h 46m 07.95s +21° 07' 19.2" P.A. 260.00 sep 0.5 mag 7.67,9.19 Sp F2 dist. 110.5 pc (360.45 l.y.)
Coord 2000 |
07461+2107 |
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Discov num |
HO 247 |
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Comp |
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Coord arcsec 2000 |
07 46 07.95 +21 07 19.2 |
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Date first |
1887 |
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Date last |
2014 |
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Obs |
90 |
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Pa first |
101 |
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Pa last |
259.6 |
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P.A. Now (θ) |
259.6° |
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Sep first |
0.4 |
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Sep last |
0.482 |
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Sep. Now (ρ) |
0.482" |
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Mag pri |
7.67 |
|
Mag sec |
9.19 |
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delta mag (ΔM) |
1.52 |
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Spectral class |
F2 (yellow-white) |
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Pri motion ra |
+033 |
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Sec motion ra |
+033 |
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Pri motion dec |
-007 |
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Sec motion dec |
-007 |
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Notes |
O
(Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 62720 |
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Constellation |
Gemini |
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SAO |
79680 |
|
HIP |
37909 |
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Tycho2 |
1374-01571-1 |
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HD |
62720 |
|
ADS |
6347 |
|
BD |
BD+21 1679 |
|
Distance |
110.5 |
|
Distance ly |
360.45 |
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ORBITAL ELEMENTS
Period (P) | 350.8y | |
Periastron (T) | 1892.44y | |
Semi-major axis (a) | 0.561a | |
Eccentricity (e) | 0.291 | |
Inclination (i) | 52.9° | |
Longitude of periastron (ω) | 339.8° | |
Node (Ω) | 117.2° | |
Notes | | |
Reference | USN1999b | |
Equinox | 2000 | |
Last observation | 1995 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
247.3 |
0.459 |
2001 |
248.2 |
0.463 |
2002 |
249.0 |
0.468 |
2003 |
249.9 |
0.472 |
2004 |
250.7 |
0.477 |
2005 |
251.5 |
0.481 |
2006 |
252.3 |
0.486 |
2007 |
253.1 |
0.491 |
2008 |
253.9 |
0.495 |
2009 |
254.6 |
0.500 |
2010 |
255.4 |
0.504 |
2011 |
256.1 |
0.509 |
2012 |
256.8 |
0.513 |
2013 |
257.5 |
0.517 |
2014 |
258.2 |
0.522 |
2015 |
258.9 |
0.526 |
2016 |
259.5 |
0.531 |
2017 |
260.2 |
0.535 |
2018 |
260.8 |
0.539 |
2019 |
261.5 |
0.544 |
2020 |
262.1 |
0.548 |
2021 |
262.7 |
0.552 |
2022 |
263.3 |
0.557 |
2023 |
263.9 |
0.561 |
2024 |
264.5 |
0.565 |
2025 |
265.1 |
0.569 |
2026 |
265.7 |
0.573 |
2027 |
266.2 |
0.577 |
2028 |
266.8 |
0.581 |
2029 |
267.3 |
0.585 |
2030 |
267.9 |
0.589 |
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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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