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5535 Annefrank (1942 EM)
Classification: Main-belt Asteroid          SPK-ID: 2005535
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 118 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0641885570994241 2.7853e-08  
a 2.212596845572089 3.625e-09 au
q 2.070573446612079 6.276e-08 au
i 4.24842329451704 2.9209e-06 deg
node 120.6080520903456 3.0465e-05 deg
peri 8.942882399936844 3.619e-05 deg
M 322.7002300069987 1.9888e-05 deg
tp 2459125.053378780128
(2020-Oct-02.55337878)
6.6409e-05 TDB
period 1202.131175856029
3.29
2.9543e-06
8.088e-09
d
yr
n .2994681505898444 7.3595e-10 deg/d
Q 2.354620244532098 3.8577e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2299  
   data-arc span      28728 days (78.65 yr)  
   first obs. used      1942-03-23  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48781  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:22:49  

Additional Information
 Earth MOID = 1.08551 au 
 Jupiter MOID = 2.65729 au 
 T_jup = 3.650 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7   n/a MPO244230  
diameter diameter 4.8 km n/a T.C. Duxbury et al. (2003) JGR v.109, E02002 sphere having a volume equal to that of the fit tri-axial ellipsoid
extent extent 6.6 x 5.0 x 3.4 km n/a T.C. Duxbury et al. (2003) JGR v.109, E02002 from best fit of Stardust spacecraft images
rotation period rot_per 15.12 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Schmidt, B.E.; Bauer, J.; Buratti, J.; Russell, C.T. (2007) Lunar & Planetary Sci. XXXVIII, 1859.]
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.311   0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

5535 Annefrank (1942 EM)          Discovered 1942-Mar-23 by Reinmuth, K. at Heidelberg
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1942 EM = 1978 EK6 = 1986 TV14 = 1991 BO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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