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15284 (1991 RZ16)
Classification: Main-belt Asteroid          SPK-ID: 2015284
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2048900951246143 6.3529e-08  
a 2.24428192139734 1.3374e-08 au
q 1.784450785035787 1.3852e-07 au
i 2.527968769770325 6.1622e-06 deg
node 63.95950995053352 0.00014195 deg
peri 355.7177248088202 0.00014297 deg
M 42.96741947370696 1.6954e-05 deg
tp 2457253.927898584024
(2015-Aug-19.42789858)
5.7351e-05 JED
period 1228.045741542388
3.36
1.0977e-05
3.005e-08
d
yr
n .2931486896797924 2.6204e-09 deg/d
Q 2.704113057758894 1.6115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      839  
   data-arc span      10875 days (29.77 yr)  
   first obs. used      1986-03-12  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55749  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:30:16  

Additional Information
 Earth MOID = .79601 au 
 Jupiter MOID = 2.63641 au 
 T_jup = 3.603 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1 mag n/a MPO358779  

15284 (1991 RZ16)          Discovered 1991-Sep-15 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1991 RZ16 = 1986 EF3 = 1991 UD5 = 1998 VC31 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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