( 5751) Zao

(1992 AC = 1989 EN1 )

Discovery Circumstances:

M. Koishikawa - Sendai Observatory, Ayashi Station

5 Jan 1992

(1)

Orbital Type:

AM

(*)

Taxonomic Type:

X;K

( 2)( 3)( 4)( 5)( 6)

Albedo:

0.53

( 7)( 8)

Diameter:(km)

2.30

( 9)

H:(mag)

14.940

(10)(11)(12)

G:

0.23

(13)(14)

U-B:(mag)

-

-

B-V:(mag)

0.81

(15)

V-R:(mag)

0.43

(16)

R-I:(mag)

0.34

(17)

Rotation Period:(hrs)

76.

(18)(19)(20)(21)

Quality:

1 !

(18)(19)(20)(21)

Lightcurve Amplitude:(mag)

0.04-0.2

(18)(19)(20)(21)

Spin Vector:

-

-

Radar Observations:

-

-

Spectral Observations:

Y

(22)(23)(24)(25)

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. 5147

( 2) Bus, S.J. & Binzel, R.P. (2002) Icarus 158,106-145. (Phase II of the Small Main-Belt Asteroid Spectrographic Survey: A Feature-Based Taxonomy.)

( 3) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

( 4) Lazzarin, M. et al. (2004) Icarus 169, 373-384. (Visible and near-infrared spectroscopic investigation of near-Earth objects at ESO: first results)

( 5) Whiteley, R.J. (2001) PhD. Thesis, University of Hawaii. (A Compositional and Dynamical Survey of the Near-Earth Asteroids)

( 6) Lazzarin, M., Marchi,S. & Magrin, S. (2010) SINEO Database (Spectroscopic Investiation of Near-Earth Objects)

( 7) Thomas, C.A. et al. (2011) Astron. J. 142, 85. (ExploreNEOs. V. AVERAGE ALBEDO BY TAXONOMIC COMPLEX IN THE NEAR-EARTH ASTEROID POPULATION) (new albedos data for 118 NEOs)

( 8) Delbo, M. et al. (2003) Icarus 166, 116-130. (Keck observations of near-Earth asteroids in the thermal infrared)

( 9) Delbo, M. et al. (2003) Icarus 166, 116-130. (Keck observations of near-Earth asteroids in the thermal infrared)

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

(11) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(12) Wisniewski, W.Z. et al. (1997) Icarus 126, 395-449. (Photometric Observations of 125 Asteroids)

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

(14) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(15) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(16) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(17) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(18) Pravec, P. et al. (1997) Icarus 130, 275-286. (The Near-Earth Objects Follow-Up Program. II. Results for 8 Asteroids from 1982 to 1995)(1943,2102,2212,3199,5751,6322,7474, 1989VA)

(19) Wisniewski, W.Z. et al. (1997) Icarus 126, 395-449. (Photometric Observations of 125 Asteroids)

(20) Petr Pravec's Ondrejov NEO Photometric Program Webpage

(21) Delbo, M. et al. (2003) Icarus 166, 116-130. (Keck observations of near-Earth asteroids in the thermal infrared)

(22) Lazzarin, M. et al. (2004) Icarus 169, 373-384. (Visible and near-infrared spectroscopic investigation of near-Earth objects at ESO: first results)

(23) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

(24) Fevig. R.A. and U. Fink (2007) Icarus 188, 175-188. (Spectral observations of 19 weathered and 23 fresh NEAs and their correlations with orbital parameters)(433,1036,1627,1685,1862,1866,1943,1980,3103, 3122,3199,3671,4183,4341,4954,5587,5751,5836,6037,7358,7482,7753,7822,7977,8201,10563,11066,13651,13651,19356,20236,20255,35107,85490,J97GD32,J97UH9,J97US9,J98HE3,J98HT31,J98ME3,J98MS2,K04LC2)

(25) Lazzarin, M., Marchi,S. & Magrin, S. (2010) SINEO Database (Spectroscopic Investiation of Near-Earth Objects)

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