23340+3120 BU 720 (72 Peg)
23h 33m 57.19s +31° 19' 31.0" P.A. 106.00 sep 0.6 mag 5.67,6.11 Sp K4IIIb dist. 168.35 pc (549.16 l.y.)
Coord 2000 |
23340+3120 |
|
Discov num |
BU 720 |
|
Comp |
|
|
Coord arcsec 2000 |
23 33 57.19 +31 19 31.0 |
|
Date first |
1878 |
|
Date last |
2018 |
|
Obs |
442 |
|
Pa first |
309 |
|
Pa last |
105.9 |
|
P.A. Now (θ) |
105.9° |
|
Sep first |
0.4 |
|
Sep last |
0.552 |
|
Sep. Now (ρ) |
0.552" |
|
Mag pri |
5.67 |
|
Mag sec |
6.11 |
|
delta mag (ΔM) |
0.44 |
|
Spectral class |
K4IIIb (yellow-orange) |
|
Pri motion ra |
+049 |
|
Sec motion ra |
+049 |
|
Pri motion dec |
-017 |
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Sec motion dec |
-017 |
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Notes |
N
O
(See Notes, Orbital solution) |
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This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
72 Peg |
|
Var name |
NSV14617 Peg |
|
Constellation |
Pegasus |
|
SAO |
73341 |
|
HIP |
116310 |
|
Tycho2 |
2766-01925-1 |
|
Gaia DR2 |
2871407124544830848 |
|
HD |
221673 |
|
HR |
8943 |
|
GC |
32772 |
|
ADS |
16836 |
|
BD |
BD+30 4978 |
|
Flamsteed |
72 Pegasi |
|
Flamsteed name |
72 Peg |
|
Distance |
168.35 |
|
Distance ly |
549.16 |
|
ORBITAL ELEMENTS
Period (P) | 492.31y | ± 75.96 |
Periastron (T) | 1904.92y | ± 10.015 |
Semi-major axis (a) | 0.568a | ± 0.065 |
Eccentricity (e) | 0.322 | ± 0.047 |
Inclination (i) | 21.7° | ± 8.3 |
Longitude of periastron (ω) | 293° | ± 15 |
Node (Ω) | 56.2° | ± 6 |
Notes | n | |
Reference | Mut2010e | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
94.0 |
0.546 |
2001 |
94.7 |
0.547 |
2002 |
95.4 |
0.549 |
2003 |
96.1 |
0.551 |
2004 |
96.7 |
0.553 |
2005 |
97.4 |
0.554 |
2006 |
98.1 |
0.556 |
2007 |
98.8 |
0.558 |
2008 |
99.4 |
0.560 |
2009 |
100.1 |
0.561 |
2010 |
100.7 |
0.563 |
2011 |
101.4 |
0.565 |
2012 |
102.0 |
0.566 |
2013 |
102.7 |
0.568 |
2014 |
103.3 |
0.570 |
2015 |
104.0 |
0.571 |
2016 |
104.6 |
0.573 |
2017 |
105.2 |
0.575 |
2018 |
105.9 |
0.576 |
2019 |
106.5 |
0.578 |
2020 |
107.1 |
0.580 |
2021 |
107.7 |
0.581 |
2022 |
108.3 |
0.583 |
2023 |
108.9 |
0.584 |
2024 |
109.5 |
0.586 |
2025 |
110.1 |
0.587 |
2026 |
110.7 |
0.589 |
2027 |
111.3 |
0.591 |
2028 |
111.9 |
0.592 |
2029 |
112.5 |
0.594 |
2030 |
113.1 |
0.595 |
|
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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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SUSPECTED ORBITAL ELEMENTS
Identifier | 23340+3120 BU 720 B |
coord_arcsec_2000 | 233357.15+311931.2 |
Period (P) | 1539d (4.21y) | ± 51 |
Periastron (T) | 53356m (2004.961y) | ± 32 |
Semi-major axis (a) | 0.322m | ± 0.029 |
Eccentricity (e) | 0 | |
Inclination (i) | 66.6° | ± 4 |
Longitude of periastron (ω) | 0° | |
Node (Ω) | 128.3° | ± 4.1 |
Notes | n | |
Reference | Mut2010e | |
Equinox | 2000 | |
Last observation | 2008 | |
Grade | 9 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
89.3 |
|
2001-01-01 |
137.2 |
|
2002-01-01 |
255.9 |
|
2003-01-01 |
313.3 |
|
2004-01-01 |
57.5 |
|
2005-01-01 |
129.6 |
|
2006-01-01 |
215.2 |
|
2007-01-01 |
306.0 |
|
2008-01-01 |
13.6 |
|
2009-01-01 |
122.3 |
|
2010-01-01 |
176.6 |
|
2011-01-01 |
298.3 |
|
2012-01-01 |
344.4 |
|
2013-01-01 |
113.7 |
|
2014-01-01 |
155.5 |
|
2015-01-01 |
288.4 |
|
2016-01-01 |
328.7 |
|
2017-01-01 |
101.8 |
|
2018-01-01 |
143.3 |
|
2019-01-01 |
273.2 |
|
2020-01-01 |
318.7 |
|
2021-01-01 |
81.3 |
|
2022-01-01 |
134.7 |
|
2023-01-01 |
244.8 |
|
2024-01-01 |
310.9 |
|
2025-01-01 |
43.5 |
|
2026-01-01 |
127.3 |
|
2027-01-01 |
201.0 |
|
2028-01-01 |
303.6 |
|
2029-01-01 |
2.1 |
|
2030-01-01 |
119.7 |
|
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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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