22052+0911 HJ 3087 (Iot Peg)
22h 05m 12.94s +09° 11' 03.5" P.A. 100.00 sep 29.9 mag 8.54,12.16 Sp K0 dist. 11.73 pc (38.26 l.y.)
| Coord 2000 |
22052+0911 |
|
Discov num |
HJ 3087 |
|
Comp |
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Coord arcsec 2000 |
22 05 12.94 +09 11 03.5 |
|
| Date first |
1830 |
|
Date last |
2015 |
|
Obs |
11 |
|
| Pa first |
104 |
|
Pa last |
99.5 |
|
P.A. Now (θ) |
99.5° |
|
| Sep first |
30.0 |
|
Sep last |
29.932 |
|
Sep. Now (ρ) |
29.932" |
|
| Mag pri |
8.54 |
|
Mag sec |
12.16 |
|
delta mag (ΔM) |
3.62 |
|
Spectral class |
K0 (yellow-orange) |
|
| Pri motion ra |
+004 |
|
Sec motion ra |
+008 |
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| Pri motion dec |
-014 |
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Sec motion dec |
-004 |
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| Notes |
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rPM=0.74
Nature of this double is uncertain.
OTHER CATALOGS AND DESIGNATIONS
| Name |
Iot Peg |
|
Var name |
NSV14034 Peg |
|
Constellation |
Pegasus |
|
SAO |
127277 |
|
| HIP |
109176 |
|
Tycho2 |
1136-00039-1 |
|
Gaia DR2 |
2725391361901178112 |
|
HD |
210027 |
|
| HR |
8430 |
|
GC |
30932 |
|
GL |
Gl 848 |
|
BD |
BD+08 4788 |
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| Bayer |
Iota Pegasi |
|
Bayer name |
Iot Peg |
|
FK5 |
831 |
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Distance |
11.73 |
|
| Distance ly |
38.26 |
|
Bayer greek |
ι Peg |
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ORBITAL ELEMENTS
| Period (P) | 10.213025d | ± 0.000002 |
Periastron (T) | 52997.378m (2003.979y) | ± 0.052 |
Semi-major axis (a) | 10.329m | ± 0.016 |
| Eccentricity (e) | 0.001764 | ± 0.000063 |
Inclination (i) | 95.83° | ± 0.12 |
Longitude of periastron (ω) | 272.8° | ± 0.18 |
| Node (Ω) | 176.262° | ± 0.075 |
Notes | n | |
Reference | Knc2010 | |
| Equinox | 2000 | |
Last observation | | |
Grade | 8 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000-01-01 |
357.8 |
0.010 |
| 2001-01-01 |
146.8 |
0.002 |
| 2002-01-01 |
176.8 |
0.010 |
| 2003-01-01 |
279.0 |
0.001 |
| 2004-01-01 |
356.0 |
0.010 |
| 2005-01-01 |
33.5 |
0.002 |
| 2006-01-01 |
175.0 |
0.010 |
| 2007-01-01 |
195.1 |
0.003 |
| 2008-01-01 |
354.1 |
0.010 |
| 2009-01-01 |
8.3 |
0.005 |
| 2010-01-01 |
172.9 |
0.009 |
| 2011-01-01 |
184.7 |
0.006 |
| 2012-01-01 |
351.6 |
0.008 |
| 2013-01-01 |
2.4 |
0.007 |
| 2014-01-01 |
169.8 |
0.007 |
| 2015-01-01 |
180.7 |
0.008 |
| 2016-01-01 |
347.5 |
0.006 |
| 2017-01-01 |
359.5 |
0.009 |
| 2018-01-01 |
163.6 |
0.004 |
| 2019-01-01 |
178.3 |
0.010 |
| 2020-01-01 |
336.2 |
0.003 |
| 2021-01-01 |
357.4 |
0.010 |
| 2022-01-01 |
134.6 |
0.002 |
| 2023-01-01 |
176.5 |
0.010 |
| 2024-01-01 |
244.0 |
0.001 |
| 2025-01-01 |
355.6 |
0.010 |
| 2026-01-01 |
23.3 |
0.002 |
| 2027-01-01 |
174.6 |
0.010 |
| 2028-01-01 |
191.6 |
0.004 |
| 2029-01-01 |
353.6 |
0.009 |
| 2030-01-01 |
6.6 |
0.005 |
|
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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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