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 |
|
Discov num |
HO 247 |
|
Comp |
|
|
Coord arcsec 2000 |
07 46 07.95 +21 07 19.2 |
|
| Date first |
1887 |
|
Date last |
2014 |
|
Obs |
90 |
|
| Pa first |
101 |
|
Pa last |
259.6 |
|
P.A. Now (θ) |
259.6° |
|
| Sep first |
0.4 |
|
Sep last |
0.482 |
|
Sep. Now (ρ) |
0.482" |
|
| Mag pri |
7.67 |
|
Mag sec |
9.19 |
|
delta mag (ΔM) |
1.52 |
|
Spectral class |
F2 (yellow-white) |
|
| Pri motion ra |
+033 |
|
Sec motion ra |
+033 |
|
| Pri motion dec |
-007 |
|
Sec motion dec |
-007 |
|
| Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
| Name |
HD 62720 |
|
Constellation |
Gemini |
|
SAO |
79680 |
|
HIP |
37909 |
|
| Tycho2 |
1374-01571-1 |
|
HD |
62720 |
|
ADS |
6347 |
|
BD |
BD+21 1679 |
|
| Distance |
110.5 |
|
Distance ly |
360.45 |
|
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 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|
