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29178 (1990 RW8)
Classification: Main-belt Asteroid          SPK-ID: 2029178
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953163848257779 8.1682e-08  
a 2.314868675103048 1.6665e-08 AU
q 1.862736894135482 1.9382e-07 AU
i 6.703079716419403 8.2729e-06 deg
node 283.7096671618928 6.3444e-05 deg
peri 28.77627751156199 6.6306e-05 deg
M 280.4389882765172 1.9428e-05 deg
tp 2457084.805826643332
(2015-Mar-03.30582664)
7.0707e-05 JED
period 1286.435345333731
3.52
1.3892e-05
3.803e-08
d
yr
n .2798430572557128 3.0219e-09 deg/d
Q 2.767000456070614 1.992e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      528  
   data-arc span      8657 days (23.70 yr)  
   first obs. used      1990-07-24  
   last obs. used      2014-04-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51847  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Apr-17 14:28:14  

Additional Information
 Earth MOID = .850567 AU 
 T_jup = 3.547 
[ 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 15.1 mag n/a MPO247600  

29178 (1990 RW8)          Discovered 1990-Sep-13 by Holt, H. E. at Palomar (675)
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 RW8 = 1996 ED12 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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