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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 45 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04874599132992003 2.3371e-08  
a 2.859644428366511 9.048e-09 au
q 2.720248225854703 6.5545e-08 au
i 1.780429737367079 1.509e-07 deg
node 184.2434187338793 8.6302e-06 deg
peri 248.3784913207292 1.607e-05 deg
M 156.9666587829578 1.2525e-05 deg
tp 2458626.356962193011
(2019-May-22.85696219)
6.0296e-05 TDB
period 1766.308181369138
4.84
8.3829e-06
2.295e-08
d
yr
n .2038149422605002 9.6731e-10 deg/d
Q 2.999040630878319 9.489e-09 au
  Orbit Determination Parameters
   # obs. used (total)      3746  
   data-arc span      32746 days (89.65 yr)  
   first obs. used      1931-10-31  
   last obs. used      2021-06-26  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .40369  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 11:49:19  

Additional Information
 Earth MOID = 1.73519 au 
 Jupiter MOID = 2.13329 au 
 T_jup = 3.300 
[ 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 11.52   n/a E2021B10  
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. 2020-October); 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

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