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993 Moultona (A923 AB)
Classification: Main-belt Asteroid          SPK-ID: 2000993
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04856572584538799 3.1897e-08  
a 2.86081426543357 1.0344e-08 au
q 2.721876744123948 9.088e-08 au
i 1.779949347535963 4.4945e-06 deg
node 184.2421158514529 0.00010883 deg
peri 248.8378975670824 0.00011908 deg
M 75.81900699740167 4.6988e-05 deg
tp 2458628.272451231124
(2019-May-24.77245123)		 0.00023089 TDB
period 1767.392146950533
4.84		 9.586e-06
2.625e-08		 d
yr
n .2036899397913167 1.1048e-09 deg/d
Q 2.999751786743191 1.0847e-08 au
   Orbit Determination Parameters
   # obs. used (total)      2911  
   data-arc span      32239 days (88.27 yr)  
   first obs. used      1931-10-31  
   last obs. used      2020-02-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42893  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 15:42:33  

Additional Information
 Earth MOID = 1.73714 au 
 Jupiter MOID = 2.13218 au 
 T_jup = 3.299 
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[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 11.5   n/a MPO452172  
diameter diameter 12.433 km 1.133 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 5.2712 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Behrend, R. (2014) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
geometric albedo albedo 0.315   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

993 Moultona (A923 AB)          Discovered 1923-Jan-12 by Van Biesbroeck, G. at Williams Bay
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 A923 AB = 1928 BA = 1960 WD = 1964 PQ = 1967 CN 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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