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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 123 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06409770735858758 2.3002e-08  
a 2.212273022457665 2.985e-09 au
q 2.070471393666876 5.0894e-08 au
i 4.248474803870259 2.5329e-06 deg
node 120.6074881394725 3.0172e-05 deg
peri 8.73076239426374 3.5824e-05 deg
M 81.49519305941067 1.9062e-05 deg
tp 2459124.426649986735
(2020-Oct-01.92664999)
6.3752e-05 TDB
period 1201.867279869768
3.29
2.4325e-06
6.66e-09
d
yr
n .2995339053069227 6.0624e-10 deg/d
Q 2.354074651248454 3.1763e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2832  
   data-arc span      28951 days (79.26 yr)  
   first obs. used      1942-03-23  
   last obs. used      2021-06-27  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46167  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-07 23:58:17  

Additional Information
 Earth MOID = 1.08601 au 
 Jupiter MOID = 2.65667 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 13.83   n/a MPO614063  
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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