( 29075) 1950 DA

(1950 DA = 2000 YK66 )

Discovery Circumstances:

C. A. Wirtanen - Lick Observatory, Mount Hamilton

22 Feb 1950

(1)

Orbital Type:

AP

(*)( 2)( 3)( 4)( 5)( 6)( 7)( 8)( 9)(10)(11)(12)

Taxonomic Type:

EM:

(13)

Albedo:

0.070

(14)(15)(16)

Diameter:(km)

2.00;1.30 R km

(17)(18)(19)

H:(mag)

17.55R

(20)

G:

0.03

(21)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.1216

(22)

Quality:

3 !

(22)

Lightcurve Amplitude:(mag)

0.20

(22)

Spin Vector:

l=187,b=-89

(23)

Sense of Rotation:

ret

(24)

Radar Observations:

Y

(25)

Spectral Observations:

Y

(26)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

! - 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.

References

( 1) I.A.U.Circ. 1258

(002) Milani, A. et al. (1989) Icarus 78, 212-269. (Dynamics of planet-crossing asteroids - Classes of orbital behavior - project Spaceguard)

(003) Hahn, G. & C.-I. Lagerkvist (1988) Celest. Mech. 43, 285-302. (Orbital evolution studies of planet-crossing asteroids)

(004) Hahn, G. & C.-I. Lagerkvist (1988) in "The Few Body Problem" (Ed.M.J. Valtonen), Kluwer Acad. Publ., Dordrecht, Netherlands, pp. 143-146. (Long-term orbital evolution studies of Aten-Apollo-Amor objects)

(005) Janiczek, P.M. et al. (1972) Astron. J. 77, 764-773. (Resonances and Encounters in the Inner Solar System)

(006) Giorgini, J.D. et al. (2002) Science 296, 132-136. (Asteroid 1950 DA's Encounter with Earth in 2880: Physical Limits of Collision Probability Prediction)

(007) Busch, M.W. et al. (2007) Icarus 190, 608-621. (Physical modeling of near-earth asteroid (29075) 1950 DA)

(008) Farnocchia, D. & S.R. Chesley (2014) Icarus 229, 321-327. (Assessment of the 2880 impact threat from asteroid (29075) 1950 DA)

(009) Rozitis, B. et al. (2014) Nature 512, 174-176. (Cohesive forces prevent the rotational breakup of rubble-pile asteroid (29075) 1950 DA)

(010) Hirabayashi, M. & D.J. Scheeres (2014) Astrophys. J. 798, L8. (Stress and Failure Analysis of Rapidly Rotating Asteroid (29075) 1950 DA)

(011) Gundlach, B. & J. Blum (2015) Icarus 257, 126-129. (Regolith grain size and cohesive strength of near-Earth Asteroid (29075) 1950 DA)

(012) Sanchez, P. & D.J. Scheeres (2016) P&SS 271, 453-471. (Disruption patterns of rotating self-gravitating aggregates: A survey on angle of friction and tensile strength) (..,1950DA,1999KW4)

(013) Rivkin, A.S. et al. (2005) Icarus 175, 175-180. (Constraining near-Earth object albedos using near-infrared spectroscopy) (1580,3103,29075,2001 ME1, 26760)

(014) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)

(015) Rivkin, A.S. et al. (2005) Icarus 175, 175-180. (Constraining near-Earth object albedos using near-infrared spectroscopy) (1580,3103,29075,2001 ME1, 26760)

(016) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

(017) Farnocchia, D. & S.R. Chesley (2014) Icarus 229, 321-327. (Assessment of the 2880 impact threat from asteroid (29075) 1950 DA)

(018) Mainzer, A. et al. (2011) ApJ 743, 156. (NEOWISE Observations of Near-Earth Objects: Preliminary Results) (albedo and diameters of 428 NEOs)

(019) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

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

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

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

(023) Farnocchia, D. & S.R. Chesley (2014) Icarus 229, 321-327. (Assessment of the 2880 impact threat from asteroid (29075) 1950 DA)

(024) Farnocchia, D. & S.R. Chesley (2014) Icarus 229, 321-327. (Assessment of the 2880 impact threat from asteroid (29075) 1950 DA)

(025) JPL's NEO Radar Detection Program Webpage

(026) Rivkin, A.S. et al. (2005) Icarus 175, 175-180. (Constraining near-Earth object albedos using near-infrared spectroscopy) (1580,3103,29075,2001 ME1, 26760)


NEODyS Page of ( 29075) 1950 DA