00171+3841 CHR 123 (The And)

 
 
00H 17M 05.54S +38 40' 54.0" P.A. 135 SEP 0.1 MAG 4.61, SP A2V DIST. 94.7 PC (308.91 L.Y.)
 
 
Coord 2000
00171+3841
Discov num
CHR 123
Comp
Coord arcsec 2000
00 17 05.54 +38 40 54.0
Date first
1986
Date last
1996
Obs
6
Pa first
142
Pa last
135
P.A. Now (θ)
135°
Sep first
0.1
Sep last
0.1
Sep. Now (ρ)
0.1"
Mag pri
4.61
Mag sec
delta mag (ΔM)
Spectral class
A2V (white)
Pri motion ra
-048
Sec motion ra
Pri motion dec
-013
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
The And
Constellation
Andromeda
SAO
53777
HIP
1366
Tycho2
2782-02251-1
HD
1280
HR
63
GC
334
BD
BD+37 34
Bayer
Theta Andromedae
Bayer name
The And
Flamsteed
24 Andromedae
Flamsteed name
24 And
Distance
94.7
Distance ly
308.91
last precise pa
134.9
last precise sep
0.053
 
 
ORBITAL ELEMENTS SOLUTION #1
 
 
Period (P)1033d (2.83y)± 84 Periastron (T)48587d (1991.903y)± 243 Semi-major axis (a)25m± 22
Eccentricity (e)0.95± 0.22 Inclination (i)69°± 15 Longitude of periastron (ω)89°± 102
Node (Ω)263°± 103 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1993
label rho theta
2000-01-01 0.013 207.1
2001-01-01 0.015 144.8
2002-01-01 0.017 176.0
2003-01-01 0.010 218.6
2004-01-01 0.016 151.0
2005-01-01 0.017 181.3
2006-01-01 0.005 242.7
2007-01-01 0.017 156.6
2008-01-01 0.016 186.9
2009-01-01 0.009 116.2
2010-01-01 0.017 161.8
2011-01-01 0.015 193.0
2012-01-01 0.012 130.1
2013-01-01 0.017 166.9
2014-01-01 0.014 200.1
2015-01-01 0.014 139.0
2016-01-01 0.017 171.9
2017-01-01 0.012 208.8
2018-01-01 0.015 146.0
2019-01-01 0.017 176.9
2020-01-01 0.010 221.3
2021-01-01 0.016 152.0
2022-01-01 0.017 182.2
2023-01-01 0.003 257.4
2024-01-01 0.017 157.5
2025-01-01 0.016 187.9
2026-01-01 0.010 119.4
2027-01-01 0.017 162.7
2028-01-01 0.015 194.2
2029-01-01 0.012 131.9
2030-01-01 0.017 167.8

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
ORBITAL ELEMENTS SOLUTION #2
 
 
Period (P)1006d (2.75y)± 95 Periastron (T)48621d (1991.996y)± 327 Semi-major axis (a)12m± 6
Eccentricity (e)0.62± 0.28 Inclination (i)63°± 10 Longitude of periastron (ω)70°± 96
Node (Ω)294°± 94 Note Grade9(1=Definitive, 9=Indet.)
Equinox Last observation1993
label rho theta
2000-01-01 0.008 275.1
2001-01-01 0.013 136.3
2002-01-01 0.009 192.5
2003-01-01 0.003 332.8
2004-01-01 0.013 146.1
2005-01-01 0.008 218.0
2006-01-01 0.008 110.3
2007-01-01 0.011 157.3
2008-01-01 0.008 246.0
2009-01-01 0.012 125.5
2010-01-01 0.010 171.6
2011-01-01 0.008 273.1
2012-01-01 0.013 135.6
2013-01-01 0.009 190.9
2014-01-01 0.003 321.2
2015-01-01 0.013 145.4
2016-01-01 0.008 216.0
2017-01-01 0.008 108.5
2018-01-01 0.012 156.5
2019-01-01 0.008 244.0
2020-01-01 0.012 124.7
2021-01-01 0.010 170.5
2022-01-01 0.008 271.2
2023-01-01 0.013 134.9
2024-01-01 0.009 189.3
2025-01-01 0.004 313.1
2026-01-01 0.013 144.7
2027-01-01 0.008 214.1
2028-01-01 0.007 106.6
2029-01-01 0.012 155.6
2030-01-01 0.008 242.1

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic