22535-1137 MCA 73 (74 Aqr)
22h 53m 28.69s -11° 36' 59.5" P.A. 273.00 sep 0.1 mag 5.80,6.40 Sp B9III dist. 253.16 pc (825.81 l.y.)
| Coord 2000 |
22535-1137 |
|
Discov num |
MCA 73 |
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Comp |
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Coord arcsec 2000 |
22 53 28.69 -11 36 59.5 |
|
| Date first |
1976 |
|
Date last |
2021 |
|
Obs |
54 |
|
| Pa first |
291 |
|
Pa last |
272.5 |
|
P.A. Now (θ) |
281° |
|
| Sep first |
0.1 |
|
Sep last |
0.066 |
|
Sep. Now (ρ) |
0.073" |
|
| Mag pri |
5.80 |
|
Mag sec |
6.40 |
|
delta mag (ΔM) |
0.6 |
|
Spectral class |
B9III (blue-white) |
|
| Pri motion ra |
+022 |
|
Sec motion ra |
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|
| Pri motion dec |
+000 |
|
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
| Name |
74 Aqr |
|
Var name |
HI Aqr |
|
Constellation |
Aquarius |
|
SAO |
165359 |
|
| HIP |
113031 |
|
Tycho2 |
5816-00131-1 |
|
Gaia DR2 |
2604809296072674944 |
|
HD |
216494 |
|
| HR |
8704 |
|
GC |
31918 |
|
BD |
BD-12 6371 |
|
Flamsteed |
74 Aquarii |
|
| Flamsteed name |
74 Aqr |
|
Distance |
253.16 |
|
Distance ly |
825.81 |
|
ORBITAL ELEMENTS
| Period (P) | 9.479y | ± 0.044 |
Periastron (T) | 2010.039y | ± 0.134 |
Semi-major axis (a) | 0.046a | ± 0.0061 |
| Eccentricity (e) | 0.862 | ± 0.029 |
Inclination (i) | 29.8° | ± 17.4 |
Longitude of periastron (ω) | 70.7° | ± 16.1 |
| Node (Ω) | 40.9° | ± 20.3 |
Notes | n | |
Reference | Tok2017b | |
| Equinox | 2000 | |
Last observation | | |
Grade | 2 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
339.9 |
0.027 |
| 2001 |
237.9 |
0.025 |
| 2002 |
263.0 |
0.051 |
| 2003 |
273.4 |
0.065 |
| 2004 |
280.7 |
0.073 |
| 2005 |
287.1 |
0.076 |
| 2006 |
293.3 |
0.074 |
| 2007 |
300.2 |
0.068 |
| 2008 |
309.2 |
0.057 |
| 2009 |
324.4 |
0.039 |
| 2010 |
71.1 |
0.007 |
| 2011 |
255.1 |
0.041 |
| 2012 |
269.0 |
0.059 |
| 2013 |
277.4 |
0.070 |
| 2014 |
284.1 |
0.075 |
| 2015 |
290.3 |
0.075 |
| 2016 |
296.8 |
0.072 |
| 2017 |
304.5 |
0.063 |
| 2018 |
315.7 |
0.049 |
| 2019 |
342.1 |
0.026 |
| 2020 |
240.1 |
0.027 |
| 2021 |
263.6 |
0.052 |
| 2022 |
273.7 |
0.066 |
| 2023 |
281.0 |
0.073 |
| 2024 |
287.3 |
0.076 |
| 2025 |
293.6 |
0.074 |
| 2026 |
300.6 |
0.068 |
| 2027 |
309.6 |
0.057 |
| 2028 |
325.4 |
0.039 |
| 2029 |
112.3 |
0.006 |
| 2030 |
255.9 |
0.042 |
|
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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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