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 ]  
91866 (1999 UD27)
Classification: Main-belt Asteroid          SPK-ID: 2091866
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 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07303373697150206 4.7219e-08  
a 2.750116684719664 1.6375e-08 au
q 2.549265386126909 1.3005e-07 au
i 12.62448437741268 5.5238e-06 deg
node 355.4170982625762 1.8551e-05 deg
peri 221.1135816854424 3.7806e-05 deg
M 327.5136556994757 3.3306e-05 deg
tp 2459150.822313221969
(2020-Oct-28.32231322)
0.00015431 TDB
period 1665.808632060688
4.56
1.4878e-05
4.073e-08
d
yr
n .2161112585631533 1.9302e-09 deg/d
Q 2.95096798331242 1.7571e-08 au
  Orbit Determination Parameters
   # obs. used (total)      819  
   data-arc span      7514 days (20.57 yr)  
   first obs. used      1999-10-02  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53691  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:43:37  

Additional Information
 Earth MOID = 1.5584 au 
 Jupiter MOID = 2.04987 au 
 T_jup = 3.307 
[ 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 MPO280381  

91866 (1999 UD27)          Discovered 1999-Oct-30 by Spacewatch at Kitt Peak
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

Alternate Designations
 1999 UD27 = 2000 XA49 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Oct-26 08:20 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin