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 ]  
441989 (2010 NA81)
Classification: Main-belt Asteroid          SPK-ID: 2441989
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1265854273078407 8.7716e-08  
a 3.057791846652031 6.3604e-08 au
q 2.670719959125153 2.8694e-07 au
i 16.94121178741924 9.7631e-06 deg
node .1403274093092226 2.2749e-05 deg
peri 5.554536290119206 4.0834e-05 deg
M 228.5141390046467 3.4366e-05 deg
tp 2459313.824035970124
(2021-Apr-09.32403597)
0.00019956 TDB
period 1953.036250478065
5.35
6.0937e-05
1.668e-07
d
yr
n .1843283758362801 5.7512e-09 deg/d
Q 3.444863734178909 7.1655e-08 au
  Orbit Determination Parameters
   # obs. used (total)      197  
   data-arc span      7200 days (19.71 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-05-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54453  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:42:37  

Additional Information
 Earth MOID = 1.66819 au 
 Jupiter MOID = 2.00969 au 
 T_jup = 3.157 
[ 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 15.5   n/a MPO437718  
diameter diameter 4.553 km 0.121 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

441989 (2010 NA81)          Discovered 2010-Jul-16 by WISE at WISE
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin