22430+3013 BLA 11 Aa,Ab
22h 43m 00.13s +30° 13' 16.7" P.A. 28.00 sep 0.1 mag 4.10,6.90 Sp G2III dist. 65.7 pc (214.31 l.y.)
Coord 2000 |
22430+3013 |
|
Discov num |
BLA 11 |
|
Comp |
Aa,Ab |
|
Coord arcsec 2000 |
22 43 00.13 +30 13 16.7 |
|
Date first |
1975 |
|
Date last |
2005 |
|
Obs |
66 |
|
Pa first |
24 |
|
Pa last |
27.8 |
|
P.A. Now (θ) |
27.8° |
|
Sep first |
0.1 |
|
Sep last |
0.051 |
|
Sep. Now (ρ) |
0.051" |
|
Mag pri |
4.10 |
|
Mag sec |
6.90 |
|
delta mag (ΔM) |
2.8 |
|
Spectral class |
G2III (yellow) |
|
Pri motion ra |
+013 |
|
Sec motion ra |
|
|
Pri motion dec |
-026 |
|
Sec motion dec |
|
|
Notes |
N
O
R
(See Notes, Orbital solution, Red magnitudes) |
|
This double is physical.
22430+3013 SYSTEM COMPONENTS
Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
Show |
|
90734 |
22 43 00 +30 13 17 |
BLA 11 Aa,Ab |
2005 |
66 |
28 |
0.1 |
4.10 |
6.90 |
2.80 |
Y |
<=== |
Show |
Matar |
90734 |
22 43 00 +30 13 17 |
BU 1144 A,BC |
2012 |
28 |
338 |
91.9 |
3.02 |
9.87 |
6.85 |
|
|
Show |
|
90734 |
22 43 00 +30 13 17 |
FYM 145 AG |
2015 |
4 |
272 |
119.1 |
3.02 |
13.50 |
10.48 |
|
|
Show |
|
90734 |
22 43 00 +30 13 17 |
FYM 145 AH |
2015 |
5 |
149 |
80.1 |
3.02 |
14.20 |
11.18 |
|
|
Show |
|
90734 |
22 43 00 +30 13 17 |
FYM 145 AJ |
2015 |
5 |
38 |
94.3 |
3.02 |
15.00 |
11.98 |
|
|
Show |
|
|
22 42 57 +30 14 43 |
BU 1144 BC |
2014 |
21 |
84 |
0.2 |
10.60 |
10.60 |
0.00 |
|
|
Show |
|
|
22 42 57 +30 14 43 |
BU 1144 BC,D |
2014 |
7 |
321 |
62.9 |
9.87 |
14.50 |
4.63 |
|
|
Show |
|
|
22 42 57 +30 14 43 |
FYM 145 BF |
2015 |
7 |
355 |
56.4 |
9.87 |
14.20 |
4.33 |
|
|
Show |
|
|
22 42 54 +30 15 32 |
BU 1144 DE |
2015 |
8 |
160 |
5.3 |
14.50 |
15.50 |
1.00 |
|
|
Show |
|
|
22 43 03 +30 12 08 |
FYM 145 HI |
2014 |
4 |
195 |
15.0 |
14.20 |
14.70 |
0.50 |
|
|
11-fold system
11 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
Common name |
Matar |
|
Var name |
NSV14285 Peg |
|
Constellation |
Pegasus |
|
SAO |
90734 |
|
HIP |
112158 |
|
Tycho2 |
2736-01823-1 |
|
Gaia DR2 |
1887953690724601984 |
|
HD |
215182 |
|
HR |
8650 |
|
GC |
31706 |
|
ADS |
16211 |
|
BD |
BD+29 4741 |
|
Bayer |
Eta Pegasi |
|
Bayer name |
Eta Peg |
|
Flamsteed |
44 Pegasi |
|
Flamsteed name |
44 Peg |
|
FK5 |
857 |
|
Distance |
65.7 |
|
Distance ly |
214.31 |
|
Bayer greek |
η Peg |
|
Meaning |
Mongolian proposal; a name given to the Gobi bear. |
|
ORBITAL ELEMENTS
Period (P) | 817.41d (2.24y) | ± 0.04 |
Periastron (T) | 47140.3d (1987.942y) | ± 0.4 |
Semi-major axis (a) | 45.02m | ± 0.06 |
Eccentricity (e) | 0.1677 | ± 0.0009 |
Inclination (i) | 68.28° | ± 0.05 |
Longitude of periastron (ω) | 354.5° | ± 0.1 |
Node (Ω) | 20.9° | ± 0.04 |
Notes | n | |
Reference | MkT1998 | |
Equinox | 2000 | |
Last observation | 1997 | |
Grade | 1 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000-01-01 |
186.3 |
0.043 |
2001-01-01 |
308.7 |
0.016 |
2002-01-01 |
160.7 |
0.025 |
2003-01-01 |
232.0 |
0.029 |
2004-01-01 |
77.2 |
0.018 |
2005-01-01 |
211.5 |
0.046 |
2006-01-01 |
32.6 |
0.034 |
2007-01-01 |
200.4 |
0.053 |
2008-01-01 |
11.3 |
0.035 |
2009-01-01 |
189.1 |
0.046 |
2010-01-01 |
328.0 |
0.018 |
2011-01-01 |
168.6 |
0.029 |
2012-01-01 |
240.1 |
0.025 |
2013-01-01 |
96.1 |
0.017 |
2014-01-01 |
214.4 |
0.043 |
2015-01-01 |
37.8 |
0.032 |
2016-01-01 |
202.4 |
0.052 |
2017-01-01 |
15.7 |
0.037 |
2018-01-01 |
191.7 |
0.048 |
2019-01-01 |
342.4 |
0.022 |
2020-01-01 |
174.6 |
0.033 |
2021-01-01 |
251.2 |
0.021 |
2022-01-01 |
117.1 |
0.017 |
2023-01-01 |
217.6 |
0.040 |
2024-01-01 |
44.2 |
0.028 |
2025-01-01 |
204.6 |
0.052 |
2026-01-01 |
19.9 |
0.037 |
2027-01-01 |
194.1 |
0.050 |
2028-01-01 |
352.7 |
0.025 |
2029-01-01 |
179.3 |
0.037 |
2030-01-01 |
266.9 |
0.018 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|