( 5011) Ptah

(6743 P-L = 1983 TF2 )

Discovery Circumstances:

C. J. van Houten, I. van Houten-Groeneveld, T. Geh - Palomar Mountain

24 Sep 1960

(1)

Orbital Type:

AP

(*)( 2)

Taxonomic Type:

Q;S

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

Albedo:

0.11

( 7)

Diameter:(km)

1.6 - 3.5 km

($)

H:(mag)

16.40

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

>20.

( 8)

Quality:

( 8)

Lightcurve Amplitude:(mag)

0.3-0.8

( 8)

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

References

( 1) A&AS 2

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

(003) 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)

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

(005) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)

(006) Perna, D. et al. (2016) Astron. J. 151, 11(14p). (GRASPING THE NATURE OF POTENTIALLY HAZARDOUS ASTEROIDS) (spectra of 14 PHAs)

(007) 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)

(008) Koehn, B.W. et al. (2014) MPB 41, 286-300. (LOWELL OBSERVATORY NEAR-EARTH ASTEROID PHOTOMETRIC SURVEY (NEAPS) - 2009 JANUARY THROUGH 2009 JUNE) (433,1943,3554,5011,5604,5620,5693,8566,14402,16834,22753,35107,52768,68350,85867,138883,141052,143651,154244,161989,162385,163758,175706,194386,203217,207945,208023,212546,256412,2001FE90,2004LV3,2005BC,2005SG19,2008QT3,2008WL60,2009DE47,2009DO111,2009EP2,2009FD,2009JM2)


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