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
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
19111 (1981 EM29)
Classification: Main-belt Asteroid          SPK-ID: 2019111
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09970486994119669 3.2054e-08  
a 2.310988786714679 1.0246e-08 au
q 2.080571950299728 7.4182e-08 au
i 5.764047793774852 4.6859e-06 deg
node 293.3774237384977 4.9461e-05 deg
peri 311.6759791981981 5.8111e-05 deg
M 2.732520835060748 3.1097e-05 deg
tp 2458990.760062602668
(2020-May-21.26006260)
0.00011084 TDB
period 1283.202462008547
3.51
8.5338e-06
2.336e-08
d
yr
n .2805480901560194 1.8658e-09 deg/d
Q 2.54140562312963 1.1268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      938  
   data-arc span      14228 days (38.95 yr)  
   first obs. used      1981-02-09  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59241  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:41:44  

Additional Information
 Earth MOID = 1.07198 au 
 Jupiter MOID = 2.4968 au 
 T_jup = 3.571 
[ 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 15.3   n/a MPO431718  
diameter diameter 1.911 km 0.397 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.484   0.215 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

19111 (1981 EM29)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20001211/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 EM29 = 2000 UB96 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Mar-28 22:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin