13513-2423 WSI  77

 
 
13h 51m 20.32s -24° 23' 25.3" P.A. 99.7 sep 0.02 mag 6.45,9.90 Sp G5V dist. 19.47 pc (63.51 l.y.)
 
 
Coord 2000
13513-2423
Discov num
WSI  77
Comp
Coord arcsec 2000
13 51 20.32 -24 23 25.3
Date first
2006
Date last
2018
Obs
16
Pa first
171
Pa last
163
P.A. Now (θ)
99.7°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.02"
Mag pri
6.45
Mag sec
9.90
delta mag (ΔM)
3.45
Spectral class
G5V (yellow)
Pri motion ra
-581
Sec motion ra
Pri motion dec
-245
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
163.4
Precise sep
0.165
Constellation
Hydra
SAO
182026
HIP
67620
Tycho2
6720-01406-1
HD
120690
HR
5209
GL
Gl 530
DM
CD-2311329
CD
CD-2311328
CP
CP-23 5802
Distance
19.47
Distance ly
63.51
last precise pa
163.4
last precise sep
0.165
 
 
ORBITAL ELEMENTS
 
 
Period (P)10.485y± 0.06 Periastron (T)2009.218y± 0.028 Semi-major axis (a)0.2827a± 0.0014
Eccentricity (e)0.3462± 0.008 Inclination (i)96.4°± 0.2 Longitude of periastron (ω)137.5°± 1.4
Node (Ω)171.3°± 0.3 Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2012
label rho theta
2000 0.187 346.4
2001 0.084 329.2
2002 0.070 204.1
2003 0.188 182.3
2004 0.284 177.0
2005 0.339 174.1
2006 0.340 171.7
2007 0.272 168.7
2008 0.119 160.5
2009 0.098 1.7
2010 0.203 349.9
2011 0.140 340.9
2012 0.037 274.2
2013 0.132 187.9
2014 0.242 179.1
2015 0.318 175.4
2016 0.347 172.9
2017 0.315 170.4
2018 0.204 166.1
2019 0.024 99.7
2020 0.177 353.7
2021 0.185 346.1
2022 0.081 328.0
2023 0.073 202.4
2024 0.192 182.0
2025 0.286 176.9
2026 0.340 174.1
2027 0.339 171.6
2028 0.269 168.6
2029 0.114 159.9
2030 0.104 0.9

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






wds13513-2423a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
13513-2423 WSI 77 2009 3 177 0.1 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2010 4 170 0.2 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2011 6 160 0.1 6.45 9.90 G5V 135120.70-242323.2
13513-2423 WSI 77 2012 8 54 0.0 6.45 9.90 G5V O 135120.70-242323.2
13513-2423 WSI 77 2013 10 185 0.2 6.45 9.90 G5V O 135120.70-242323.2
13513-2423 WSI 77 2014 11 358 0.3 6.45 9.90 G5V NO 135120.70-242323.2
13513-2423 WSI 77 2015 12 175 0.3 6.45 9.90 G5V NO 135120.70-242323.2
13513-2423 WSI 77 2017 14 169 0.3 6.45 9.90 G5V NO 135120.32-242325.3

If you need more information about this double, apply for a data request form to the WDS.
 
 
WDS 13513-2423 WSI 77 : NOTES
 
 
discov_num notes refcode
WSI 77 The 10.3 yr SB1 orbit by Abt & Willmarth (2006) matches the speckle AbH2006
pair WSI 77 and explains the large dmu. Tok2012a
Astrometric binary. Hipparcos parallax 51.35 +/- 0.45 mas. Dynamical
parallax 50.3 mas, masses 0.99 and 0.63 Msun. WSI 77 is a
chromospherically active G5 dwarf within 20 pc from the Sun. According
to Abt & Willmarth (2006), it is also a single-lined spectroscopic AbH2006
binary with 10.3 yr period. We used RVs from that work and the average
RV from Nidever et al. (2002) together with four speckle points for Nid2002
the combined orbital solution presented. The spectroscopic elements
are K1 = 6.06 +/- 0.25 km/s and V0 = 5.38 +/- 0.10 km/s, the rms
residual in RV is 0.11 km/s. The node listed in Table 3 corresponds to
the primary component, therefore Omega was chosen to describe the
secondary’s relative motion. The pair was "caught" at close separation
in 2012. Tok2012b
Omega for Tokovinin et al. (2012) orbit flipped by 180deg, at request
of author. Tok2012b
 
 
REFERENCES
 
 
refcode metd author reference
AbH2006 orb - Abt, H.A., & Willmarth, D. 2006ApJS..162..207A
AbH2006 ApJS 162, 207, 2006
Nid2002 rv - Nidever, D.L., Marcy, G.W., Butler, R.P., Fischer, D.A., & Vogt, S.S. 2002ApJS..141..503N
Nid2002 ApJS 141, 503, 2002
Tok2012a A j Tokovinin, A., Hartnung, M., Hayward, T.L., & Makarov, V.V. 2012AJ....144....7T
Tok2012a AJ 144, 7, 2012
Tok2012b S j Tokovinin, A. 2012AJ....144...56T
Tok2012b +orb AJ 144, 56, 2012
WSI (Washington Speckle Interferometer)
 
 
DISCOVERER
 
 
discov author
WSI (Washington Speckle Interferometer)
WSI Douglass, G.G., Hindsley, R.B., & Worley, C.E.
WSI Germain, M.E., Douglass, G.G., & Worley, C.E.
WSI Douglass, G.G., Mason, B.D., Germain, M.E., & Worley, C.E.
WSI Douglass, G.G., Mason, B.D., Rafferty, T.J., Holdenried, E.R., & Germain, M.E.
WSI Mason, B.D., Hartkopf, W.I., Holdenried, E.R., Rafferty, T.J., Wycoff, G.L.,
WSI Germain, M.E. & Douglass, G.G.
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Holdenried, E.R., Platais, I.,
WSI Mason, B.D., Hartkopf, W.I., Urban, S.E., Wycoff, G.L., Pascu, D., Hall, D.M.,
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Pascu, D., Urban, S.E., Hall, D.M.,
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., Rafferty, T.J., Urban, S., & Flagg, L.
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Rafferty, T.J.
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Holdenried, E.R.
WSI Mason, B.D., Hartkopf, W.I., Wycoff, G.L., & Wieder, G.
WSI Mason, B.D., Hartkopf, W.I., & Wycoff, G.L.
WSI Mason, B.D., Hartkopf, W.I., & Friedman, E.A.
WSI Mason, B.D., Hartkopf, W.I., & Hurowitz, H.M.
WSI Hartkopf, W.I., Mason, B.D., Finch, C.T., Zacharias, N., Wycoff, G.L., & Hsu, D.
WSI Hartkopf, W.I. & Mason, B.D.
WSI Mason, B.D., Hartkopf, W.I., Bredthauer, G., Ferguson, E.W., Finch, C.T., Kilian,
WSI Mason, B.D. & Hartkopf, W.I.
WSI Mason, B.D., Hartkopf, W.I., Urban, S.E. & Josties, J.D.
WSI Mason, B.D., Williams, S.J. & Josties, J.D. .

 
 
WDS 13513-2423 WSI 77 : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 13513-2423 WSI 77 : MEASURES
 
 
No records found.

 
 
WDS 13513-2423 WSI 77 : Virtual Eyepiece
 
 

13513-2423  WSI  77 A 13513-2423  WSI  77 sep 0.02 P.A. 99.7 mag 6.45,9.90 Sp G5V virtual eyepiece
Click on the map to see the double of your interest.
Pass over with the mouse cursor to display the catalog designation.

Radius:
 
 
WDS 13513-2423 WSI 77 : Aladin DSS image @ 13h 51m 20.32s -24° 23' 25.3"