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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1953673116222968 7.3539e-08  
a 2.315182559540133 1.7419e-08 AU
q 1.862871566967949 1.7652e-07 AU
i 6.702978931163605 6.9605e-06 deg
node 283.7097001757436 6.0259e-05 deg
peri 28.74294197177404 6.2626e-05 deg
M 336.4347183052228 1.8156e-05 deg
tp 2457084.726048297160
(2015-Mar-03.22604830)
6.5309e-05 JED
period 1286.697005353338
3.52
1.4521e-05
3.976e-08
d
yr
n .2797861489552008 3.1576e-09 deg/d
Q 2.767493552112316 2.0822e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      555  
   data-arc span      8743 days (23.94 yr)  
   first obs. used      1990-07-24  
   last obs. used      2014-07-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50422  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:47:04  

Additional Information
 Earth MOID = .852608 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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