22237+2051 STF 2900 AB (33 Peg)
22h 23m 39.56s +20° 50' 54.0" P.A. 1.00 sep 1.0 mag 6.28,9.18 Sp F7IV dist. 33.7 pc (109.93 l.y.)
| Coord 2000 |
22237+2051 |
|
Discov num |
STF2900 |
|
Comp |
AB |
|
Coord arcsec 2000 |
22 23 39.56 +20 50 54.0 |
|
| Date first |
1831 |
|
Date last |
2017 |
|
Obs |
132 |
|
| Pa first |
182 |
|
Pa last |
0.9 |
|
P.A. Now (θ) |
180.8° |
|
| Sep first |
3.1 |
|
Sep last |
0.972 |
|
Sep. Now (ρ) |
1.212" |
|
| Mag pri |
6.28 |
|
Mag sec |
9.18 |
|
delta mag (ΔM) |
2.9 |
|
Spectral class |
F7IV (yellow-white) |
|
| Pri motion ra |
+335 |
|
Sec motion ra |
|
|
| Pri motion dec |
-015 |
|
Sec motion dec |
|
|
| Notes |
N
O
(See Notes, Orbital solution) |
|
This double is physical.
22237+2051 SYSTEM COMPONENTS
| Show |
name |
SAO |
coord |
wds_name |
last |
obs |
pa |
sep |
mag1 |
mag2 |
d_mag |
orb |
current |
| Show |
33 Peg |
90462 |
22 23 40 +20 50 54 |
STF 2900 AB |
2017 |
132 |
1 |
1.0 |
6.28 |
9.18 |
2.90 |
Y |
<=== |
| Show |
|
90462 |
22 23 40 +20 50 54 |
STF 2900 AC |
2015 |
98 |
306 |
92.7 |
6.28 |
8.54 |
2.26 |
|
|
| Show |
|
|
22 23 35 +20 51 48 |
COU 139 CD |
2013 |
27 |
88 |
0.3 |
8.54 |
10.70 |
2.16 |
|
|
Quadruple system
4 estimated visually detectable stars in this system
OTHER CATALOGS AND DESIGNATIONS
| Name |
33 Peg |
|
Constellation |
Pegasus |
|
SAO |
90462 |
|
HIP |
110548 |
|
| Tycho2 |
1694-01747-1 |
|
HD |
212395 |
|
HR |
8532 |
|
GC |
31300 |
|
| ADS |
15896 |
|
BD |
BD+20 5139 |
|
Flamsteed |
33 Pegasi |
|
Flamsteed name |
33 Peg |
|
| Distance |
33.7 |
|
Distance ly |
109.93 |
|
ORBITAL ELEMENTS
| Period (P) | 407.1y | |
Periastron (T) | 2000.07y | |
Semi-major axis (a) | 2.03a | |
| Eccentricity (e) | 0.827 | |
Inclination (i) | 91.5° | |
Longitude of periastron (ω) | 220.6° | |
| Node (Ω) | 180.4° | |
Notes | n | |
Reference | Tok2018b | |
| Equinox | 2000 | |
Last observation | 2017 | |
Grade | 3 | (1=Definitive, 9=Indet.) |
| label |
theta |
rho |
| 2000 |
359.2 |
0.271 |
| 2001 |
358.2 |
0.200 |
| 2002 |
356.0 |
0.121 |
| 2003 |
344.1 |
0.037 |
| 2004 |
193.3 |
0.051 |
| 2005 |
185.5 |
0.135 |
| 2006 |
183.7 |
0.217 |
| 2007 |
182.9 |
0.296 |
| 2008 |
182.4 |
0.372 |
| 2009 |
182.0 |
0.444 |
| 2010 |
181.8 |
0.514 |
| 2011 |
181.6 |
0.581 |
| 2012 |
181.5 |
0.645 |
| 2013 |
181.4 |
0.706 |
| 2014 |
181.3 |
0.765 |
| 2015 |
181.2 |
0.822 |
| 2016 |
181.1 |
0.877 |
| 2017 |
181.0 |
0.929 |
| 2018 |
181.0 |
0.980 |
| 2019 |
180.9 |
1.030 |
| 2020 |
180.9 |
1.078 |
| 2021 |
180.8 |
1.124 |
| 2022 |
180.8 |
1.169 |
| 2023 |
180.8 |
1.212 |
| 2024 |
180.7 |
1.255 |
| 2025 |
180.7 |
1.296 |
| 2026 |
180.7 |
1.336 |
| 2027 |
180.6 |
1.375 |
| 2028 |
180.6 |
1.413 |
| 2029 |
180.6 |
1.450 |
| 2030 |
180.6 |
1.486 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
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|
|
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Measures: green=micrometric, blue=interferometric, purple=photographic |
|
WDS 22237+2051 STF 2900 AB (33 Peg) : NOTES
| discov_num |
notes |
refcode |
| STF2900 |
33 Peg. |
|
|
STTA233. STFB 12. |
|
|
AB: Additional notes may be found in Couteau (1955). |
Cou1955c |
|
AC: Optical pair, based on study of relative motion of the components |
|
|
using the method of apparent motion parameters. |
Kiy2008 |
|
AC: H 5 99. |
MEv2010 |
| COU 139 |
CD: This may be the pair observed by Kuiper in 1934 and "suspected of |
Kui1961b |
|
being a very close, equal pair of 0".1". Star was not retained in the |
|
|
lists of Kuiper, nor in the IDS. |
Cou1967a |
| STF2900 |
AB: Rectilinear solution by Hartkopf & Mason (2013). |
Hrt2013b |
REFERENCES
| refcode |
metd |
author |
reference |
| Cou1955c |
Ma - |
Couteau, P. |
1955JO.....38..238C |
| Cou1955c |
+Mc |
J. Obs. 38, 238, 1955 |
|
| Cou1967a |
Ma - |
Couteau, P. |
1967JO.....50...33C |
| Cou1967a |
+Pa |
J. Obs. 50, 33-39, 1967 |
|
| Hrt2013b |
orb - |
Hartkopf, W.I. & Mason, B.D. |
2013IAUDS.181....1H |
| Hrt2013b |
+lin |
Inf. Circ. 181, 1, 2013 |
|
| Kiy2008 |
- |
Kiyaeva, O.V., Kiselev, A.A. & Izmailov, I.S. |
2008SvAL...32..405K |
| Kiy2008 |
|
SvAL 34, 405, 2008 |
|
| Kui1961b |
Ma j |
Kuiper, G.P. |
1961ApJS....6....1K |
| Kui1961b |
|
ApJS 6, 1, 1961 |
|
| MEv2010 |
- |
MacEvoy, B. |
................... |
| MEv2010 |
|
private communication, 2010 (see http://www.handprint.com/ASTRO/index.html) |
|
| Tok2018b |
orb j |
Tokovinin, A. |
2018IAUDS.194....1T |
| Tok2018b |
|
Inf. Circ. 194, 1, 2018 |
|
DISCOVERER
| idgroup |
discov |
author |
| 1 |
STF |
Struve, F.G.W. |
WDS HISTORIC DATA
| coord_2000 |
discov_num |
comp |
epoch |
obs |
pa |
sep |
mag_pri |
mag_sec |
spectr |
notes |
coord_arcsec_2000 |
| 22237+2051 |
STF2900 |
AB |
1995 |
113 |
1 |
0.4 |
6.39 |
9.29 |
F7IV |
NLD |
222339.36+205053.8 |
| 22237+2051 |
STF2900 |
AB |
2008 |
119 |
2 |
0.4 |
6.39 |
9.29 |
F7IV |
NLD |
222339.36+205053.8 |
| 22237+2051 |
STF2900 |
AB |
2012 |
118 |
183 |
0.7 |
6.28 |
9.18 |
F7IV |
NLD |
222339.36+205053.8 |
| 22237+2051 |
STF2900 |
AB |
2013 |
119 |
1 |
0.7 |
6.28 |
9.18 |
F7IV |
NL |
222339.36+205053.8 |
| 22237+2051 |
STF2900 |
AB |
2015 |
121 |
0 |
0.7 |
6.28 |
9.18 |
F7IV |
NL |
222339.56+205054.0 |
| 22237+2051 |
STF2900 |
AB |
2017 |
123 |
181 |
1.0 |
6.28 |
9.18 |
F7IV |
NC |
222339.56+205054.0 |
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WDS 22237+2051 STF 2900 AB (33 Peg) : VISUAL OBSERVATIONS REPORTS
WDS 22237+2051 STF 2900 AB (33 Peg) : MEASURES
No records found.
WDS 22237+2051 (33 Peg) : VIRTUAL EYEPIECE
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WDS 22237+2051 (33 Peg) : ALADIN DSS IMAGE @
Error -22130
Not valid ID.
Error -22130
Not valid ID.
Error -27220
Not valid ID.
