( 8176) 1991 WA

(1991 WA )

Discovery Circumstances:

R. H. McNaught - Siding Spring Observatory

29 Nov 1991

(1)

Orbital Type:

AP

(*)

Taxonomic Type:

S,Q

( 2)( 3)( 4)

Albedo:

mh

( 5)

Diameter:(km)

1.2 km

( 6)

H:(mag)

16.90

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

7.111

( 7)( 8)

Quality:

3 !

( 7)( 8)

Lightcurve Amplitude:(mag)

0.80-0.99

( 7)( 8)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

Y

( 9)(10)(11)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

# - absolute magnitude H derived from astrometric observation via orbit determination - G value assumed to be 0.15

! - 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. 5396

(002) Binzel, R.P. & S. Xu (1992) I.A.U. Circ. 5422. (1991 VK, 1991 VL, 1991 WA and 1991 XB)

(003) Hicks, M.D. et al. (1998) Icarus 133, 69-78. (The Unusual Spectra of 15 Near-Earth Asteroids and Extinct Comet Candidates)(1566,1620,2063,2102,2201,3200,4953,6053,6489,7092,8176,1994ES1,1995CR,1996JA1)

(004) 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.)

(005) 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)

(006) 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)

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

(008) Warner, B.D. (2015) MPB 42, 256-266. (NEAR-EARTH ASTEROID LIGHTCURVE ANALYSIS AT CS3-PALMER DIVIDE STATION: 2015 MARCH-JUNE)(35 NEAs)

(009) 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.)

(010) Hicks, M.D. et al. (1998) Icarus 133, 69-78. (The Unusual Spectra of 15 Near-Earth Asteroids and Extinct Comet Candidates)(1566,1620,2063,2102,2201,3200,4953,6053,6489,7092,8176,1994ES1,1995CR,1996JA1)

(011) 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)


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