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 ]  
20671 (1999 UX48)
Classification: Main-belt Asteroid          SPK-ID: 2020671
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1443514815871604 5.1467e-08  
a 2.673677522834796 1.5262e-08 au
q 2.287728211127304 1.4224e-07 au
i 10.35402385416053 4.5656e-06 deg
node 260.4530903835951 2.6359e-05 deg
peri 304.8769678130078 2.9754e-05 deg
M 341.6571988076491 1.3006e-05 deg
tp 2458681.862657013179
(2019-Jul-17.36265701)
5.7818e-05 TDB
period 1596.842064502048
4.37
1.3673e-05
3.743e-08
d
yr
n .2254449629069991 1.9304e-09 deg/d
Q 3.059626834542287 1.7465e-08 au
  Orbit Determination Parameters
   # obs. used (total)      944  
   data-arc span      9994 days (27.36 yr)  
   first obs. used      1991-12-30  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53924  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:54:21  

Additional Information
 Earth MOID = 1.30029 au 
 Jupiter MOID = 2.00619 au 
 T_jup = 3.342 
[ 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 14.5   n/a MPO474037  
diameter diameter 6.521 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.042   0.003 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

20671 (1999 UX48)          Discovered 1999-Oct-31 by CSS at Catalina
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-25 18:18 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin