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 ]  
215653 (2003 UM121)
Classification: Main-belt Asteroid          SPK-ID: 2215653
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 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654406069951865 4.3828e-08  
a 2.308478827316826 1.6483e-08 au
q 1.926562688889994 1.0177e-07 au
i 5.623198401529611 7.6193e-06 deg
node 15.81437256831685 5.0087e-05 deg
peri 276.7396617180599 5.6301e-05 deg
M 342.0085173267798 2.6365e-05 deg
tp 2459064.525315102885
(2020-Aug-03.02531510)
9.3707e-05 TDB
period 1281.112505049218
3.51
1.3721e-05
3.757e-08
d
yr
n .2810057653649782 3.0096e-09 deg/d
Q 2.690394965743658 1.921e-08 au
  Orbit Determination Parameters
   # obs. used (total)      248  
   data-arc span      9187 days (25.15 yr)  
   first obs. used      1995-04-06  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:14:51  

Additional Information
 Earth MOID = .920569 au 
 Jupiter MOID = 2.50969 au 
 T_jup = 3.561 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457156.5 (2015-May-14.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1654061894945553 4.3922e-08  
q 1.926589456886517 1.0186e-07 au
tp 2457782.567599463932
(2017-Jan-29.06759946)
9.6733e-05 TDB
node 15.86424203967518 5.0127e-05 deg
peri 276.4824697648814 5.6302e-05 deg
i 5.621794183753567 7.6152e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      248  
   data-arc span      9187 days (25.15 yr)  
   first obs. used      1995-04-06  
   last obs. used      2020-05-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50764  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-24 04:14:51  

Additional Information
 Jupiter MOID = 2.50969 au 
 T_jup = 3.561 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.929134740601022E-15 -4.433133485948165E-15 2.292674573304855E-13 8.814065538794926E-15 8.22205658847398E-14 -2.514621318862178E-16
q -4.433133485948165E-15 1.037555246238501E-14 -9.041654511238949E-13 -2.24813068601418E-14 -3.057104004501061E-13 5.462684137604106E-16
tp 2.292674573304855E-13 -9.041654511238949E-13 9.357332271865863E-9 6.741387227375508E-11 2.491478895297821E-9 -2.949536578356542E-12
node 8.814065538794926E-15 -2.24813068601418E-14 6.741387227375508E-11 2.51267039053227E-9 -2.481630018659555E-9 7.001039950219017E-12
peri 8.22205658847398E-14 -3.057104004501061E-13 2.491478895297821E-9 -2.481630018659555E-9 3.169927859447164E-9 -7.736061823342889E-12
i -2.514621318862178E-16 5.462684137604106E-16 -2.949536578356542E-12 7.001039950219017E-12 -7.736061823342889E-12 5.799194346770028E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO433411  
diameter diameter 1.569 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.125   0.079 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

215653 (2003 UM121)          Discovered 2003-Oct-19 by Spacewatch at Kitt Peak
Reference: 20090607/Numbers.arcLast Updated: 2009-06-08
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-15 17:02 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin