Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 40 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04863618943919679 3.0548e-08  
a 2.860197043076355 9.9093e-09 au
q 2.721087957855863 8.6161e-08 au
i 1.780218901783902 4.2379e-06 deg
node 184.239926683194 0.00010317 deg
peri 248.5888191202507 0.00011309 deg
M 116.8107176083335 4.4878e-05 deg
tp 2458627.212400250603
(2019-May-23.71240025)
0.00022063 TDB
period 1766.820203962681
4.84
9.1818e-06
2.514e-08
d
yr
n .2037558769095918 1.0589e-09 deg/d
Q 2.999306128296847 1.0391e-08 au
  Orbit Determination Parameters
   # obs. used (total)      3324  
   data-arc span      32593 days (89.23 yr)  
   first obs. used      1931-10-31  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .41557  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 00:51:34  

Additional Information
 Earth MOID = 1.73577 au 
 Jupiter MOID = 2.13267 au 
 T_jup = 3.300 
[ show covariance matrix ]

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 11.52   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

[ show close-approach data ]
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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Feb-25 20:00 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin