( 5496) 1973 NA

(1973 NA = 1992 OA )

Discovery Circumstances:

E. F. Helin - Palomar Mountain

4 Jul 1973

(1)

Orbital Type:

AP

(*)( 2)

Taxonomic Type:

X:C

( 3)( 4)

Albedo:

-

-

Diameter:(km)

1.9 - 4.3 km

($)

H:(mag)

16.00

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

V-I:(mag)

-

-

B-R:(mag)

-

-

Rotation Period:(hrs)

2.855

( 5)

Quality:

3 !

( 5)

Lightcurve Amplitude:(mag)

0.15 0.15

( 5)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

-

-

Spectral Observations:

-

-

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

# - 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

(001) I.A.U.Circ. 2555

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

(003) DeMeo, F. & R.P. Binzel (2008) Icarus 194, 436-449. (Comets in the near-Earth object population) ()

(004) Thomas, C.A. et al. (2014) Icarus 228, 217-246. (Physical characterization of Warm Spitzer-observed near-Earth objects)

(005) Skiff, B.A. (2011) Posting on CALL web site. http://www.minorplanet.info/call.html


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