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5428 (1987 RA1)
Classification: Main-belt Asteroid          SPK-ID: 2005428
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03499098496776646 5.428e-08  
a 2.903064224913176 2.4122e-08 au
q 2.801483148258779 1.6326e-07 au
i .9352287779660249 4.9449e-06 deg
node 269.8462059110508 0.00052359 deg
peri 17.82548491162393 0.00054194 deg
M 309.9280738388699 0.00014209 deg
tp 2457651.789990583074
(2016-Sep-20.28999058)
0.00071334 JED
period 1806.688968161415
4.95
2.2518e-05
6.165e-08
d
yr
n .1992595329600953 2.4835e-09 deg/d
Q 3.004645301567574 2.4966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1160  
   data-arc span      22093 days (60.49 yr)  
   first obs. used      1954-12-22  
   last obs. used      2015-06-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51013  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 11:51:27  

Additional Information
 Earth MOID = 1.78342 au 
 Jupiter MOID = 2.04235 au 
 T_jup = 3.285 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO337299  

5428 (1987 RA1)          Discovered 1987-Sep-13 by Debehogne, H. at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1987 RA1 = 1976 JS4 = 1990 DV2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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