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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03474638650568005 6.4641e-08  
a 2.905542601395744 3.1452e-08 AU
q 2.804585495158929 1.826e-07 AU
i .9352610775448531 6.0521e-06 deg
node 269.9239647942768 0.00052944 deg
peri 16.33424806927248 0.00054876 deg
M 231.6694492487027 0.00014729 deg
tp 2457645.362103328029
(2016-Sep-13.86210333)
0.00074229 JED
period 1809.003045954305
4.95
2.9373e-05
8.042e-08
d
yr
n .199004640044754 3.2313e-09 deg/d
Q 3.00649970763256 3.2545e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      982  
   data-arc span      21862 days (59.85 yr)  
   first obs. used      1954-12-22  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52196  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 12:58:59  

Additional Information
 Earth MOID = 1.7895 AU 
 T_jup = 3.284 
[ 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 12.6 mag n/a MPO253401  

5428 (1987 RA1)          Discovered 1987-Sep-13 by Debehogne, H. at La Silla (809)
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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