( 65803) Didymos

(1996 GT )

Discovery Circumstances:

Spacewatch - Steward Observatory, Kitt Peak-Spacewatch

11 Apr 1996

(1)

Orbital Type:

AM

(*)( 2)

Taxonomic Type:

Xk

( 3)

Albedo:

-

-

Diameter:(km)

722 - 1616 m

($)

H:(mag)

18.160

( 4)

G:

0.20

( 5)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.2593+11.91

( 6)( 7)( 8)( 9)(10)(11)

Quality:

3RB !

( 6)( 7)( 8)( 9)(10)(11)

Lightcurve Amplitude:(mag)

0.08

( 6)( 7)( 8)( 9)(10)(11)

Spin Vector:

l=157,b=+19

(12)

Sense of Rotation:

-

-

Radar Observations:

Y

(13)(14)(15)

Spectral Observations:

Y

(16)(17)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

$ - diameter range derived from H and assumed albedo for C and S type - 0.04 and 0.20 respectively

! - quality code according to Lagerkvist et al. (1989) in "Asteroids II" (Eds. R.P.Binzel et al.), Univ.Ariz.Press, Tucson, USA, pp. 1162-1179.

B - in rotation quality code means Binary asteroid

R - as rotation quality code means Radar observations

References

( 1) M.P.E.C. 1996-H02

(002) Fang, J. & J-L. Margot (2012) Astron. J. 143, 59. (THE ROLE OF KOZAI CYCLES IN NEAR-EARTH BINARY ASTEROIDS) (2002CE26,2004DC,2003YT1,Didymos,1991VH)

(003) Binzel, R.P. et al. (2004) Meteorit. Planet. Sci. 39, 351-366. (Dynamical and compositional assessment of near-Earth object mission targets) (new spectra and taxonomy of 22 NEOs)

(004) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(005) Pravec, P. et al. (2012) Icarus 221, 365-387 (Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations)

(006) Pravec, P. et al. (2006) Icarus 181, 63-93. (Photometric survey of binary near-Earth asteroids)

(007) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"

(008) Pravec, P. et al. (2003) I.A.U. Circ. 8244. (65803 1996 GT) (radar and photometric obs. binary asteroid detection)

(009) Ries, J.G.et al. (2004) B.A.A.S. 36, 779. (R-Band Photometry of Potentially Hazardous Asteroids at McDonald Observatory)

(010) Kitazato, K.et al. (2004) LPSC 35, 1623. (Photometric Behaviour Dependent on Solar Phase Angle and Physical Characteristics of Binary Near-Earth-Asteroid (65803) 1996 GT)

(011) Ries, J.G. et al. (2006) ASPC 352, 273-276. (Photometry of Near Earth Asteroids at McDonald Observatory) (2002EZ11,98943,2003UV11,2003SS84,65803)

(012) Scheirich P. & P. Pravec (2009) Icarus 200, 531-547. (Modeling of lightcurves of binary asteroids) (175706,65803,66391,185851,66063)

(013) JPL's NEO Radar Detection Program Webpage

(014) Pravec, P. et al. (2003) I.A.U. Circ. 8244. (65803 1996 GT) (radar and photometric obs. binary asteroid detection)

(015) Benner, L.A.M. et al. (2010) DPS 42, 1317. (abstract) (Radar Imaging and a Physical Model of Binary Asteroid 65803 Didymos)

(016) Binzel, R.P. et al. (2004) Meteorit. Planet. Sci. 39, 351-366. (Dynamical and compositional assessment of near-Earth object mission targets) (new spectra and taxonomy of 22 NEOs)

(017) deLeon, J. et al. (2006) Advanc. Space Res. 37, 178-183. (Spectral analysis and mineralogical characterization of 11 olivine-pyroxene rich NEAs) (1627,1864,3122,25143,65803,1999BY9,1999TF211,2000VJ61, 2000XH44,2003HM16,2003YG118)


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