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JPL Small-Body Database Browser
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312895 (2011 UB281)
Classification: Main-belt Asteroid          SPK-ID: 2312895
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1260736581137936 7.998e-08  
a 3.082133940702866 5.414e-08 au
q 2.693558040001773 2.6042e-07 au
i 17.43127427307927 1.0076e-05 deg
node 188.9782451047984 2.3002e-05 deg
peri 160.4313137681003 4.2189e-05 deg
M 185.5076344026735 3.2761e-05 deg
tp 2459558.464948004137
(2021-Dec-09.96494800)
0.00018301 TDB
period 1976.403839222025
5.41
5.2076e-05
1.426e-07
d
yr
n .1821490086467892 4.7994e-09 deg/d
Q 3.470709841403958 6.0966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      134  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1998-04-19  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6721  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 14:26:10  

Additional Information
 Earth MOID = 1.69399 au 
 Jupiter MOID = 2.01233 au 
 T_jup = 3.145 
[ 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 15.9   n/a MPO455306  

312895 (2011 UB281)          Discovered 1998-Apr-19 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 UB281 = 1998 HF15 = 2010 HQ52 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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