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29173 (1990 QW4)
Classification: Main-belt Asteroid          SPK-ID: 2029173
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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1508883986377335 5.7975e-08  
a 2.30464814264064 1.8731e-08 AU
q 1.956903474974167 1.3592e-07 AU
i 8.67099598691251 6.8949e-06 deg
node 123.1924611388061 5.6587e-05 deg
peri 306.9255414372001 6.5959e-05 deg
M 267.0296148608736 3.7167e-05 deg
tp 2457330.525502388989
(2015-Nov-04.02550239)
0.00013396 JED
period 1277.925015393268
3.50
1.5579e-05
4.265e-08
d
yr
n .2817066695335124 3.4343e-09 deg/d
Q 2.652392810307113 2.1557e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      699  
   data-arc span      8702 days (23.82 yr)  
   first obs. used      1990-08-24  
   last obs. used      2014-06-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .54388  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 13:00:18  

Additional Information
 Earth MOID = .985063 AU 
 T_jup = 3.559 
[ 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 14.1 mag n/a MPO266102  

29173 (1990 QW4)          Discovered 1990-Aug-24 by Holt, H. E. at Palomar (675)
Reference: 20011002/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QW4 = 1999 CK10 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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