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312898 (2011 UT285)
Classification: Main-belt Asteroid          SPK-ID: 2312898
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .122046360234241 8.3573e-08  
a 2.729802574548472 3.7614e-08 au
q 2.396640106166771 2.2451e-07 au
i 3.833833035560597 8.5894e-06 deg
node 87.45356316785983 0.0001381 deg
peri 59.78915069689536 0.0001433 deg
M 219.6906671640457 4.1884e-05 deg
tp 2459642.565514124455
(2022-Mar-04.06551412)
0.00020007 TDB
period 1647.38567572729
4.51
3.4049e-05
9.322e-08
d
yr
n .2185280625564908 4.5166e-09 deg/d
Q 3.062965042930173 4.2204e-08 au
  Orbit Determination Parameters
   # obs. used (total)      122  
   data-arc span      5639 days (15.44 yr)  
   first obs. used      2004-02-16  
   last obs. used      2019-07-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53937  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 06:02:32  

Additional Information
 Earth MOID = 1.41125 au 
 Jupiter MOID = 1.94528 au 
 T_jup = 3.341 
[ 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 16.9   n/a MPO450245  

312898 (2011 UT285)          Discovered 2004-Feb-16 by Spacewatch at Kitt Peak
Reference: 20120109/Numbers.arcLast Updated: 2012-01-11

[ show close-approach data ]
Alternate Designations
 2011 UT285 = 2009 HD57 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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