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 ]  
91856 (1999 UB13)
Classification: Main-belt Asteroid          SPK-ID: 2091856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1338654369584627 4.647e-08  
a 2.761224385180422 1.8175e-08 au
q 2.391591876317883 1.3025e-07 au
i 15.50611892316199 5.1408e-06 deg
node 209.323515243075 1.6584e-05 deg
peri 159.514346772525 2.3294e-05 deg
M 179.5241022565831 1.9062e-05 deg
tp 2458164.759901587531
(2018-Feb-15.25990159)
8.5037e-05 TDB
period 1675.91109854697
4.59
1.6547e-05
4.53e-08
d
yr
n .2148085303045747 2.1209e-09 deg/d
Q 3.130856894042962 2.0608e-08 au
  Orbit Determination Parameters
   # obs. used (total)      631  
   data-arc span      7584 days (20.76 yr)  
   first obs. used      1999-07-22  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54074  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:43:37  

Additional Information
 Earth MOID = 1.39819 au 
 Jupiter MOID = 2.3508 au 
 T_jup = 3.276 
[ 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 14.9   n/a MPO426571  
diameter diameter 6.989 km 0.056 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

91856 (1999 UB13)          Discovered 1999-Oct-29 by CSS at Catalina
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 08:35 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin