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10312 (1990 QT9)
Classification: Main-belt Asteroid          SPK-ID: 2010312
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1318889417328656 4.5439e-08  
a 2.200345512765714 1.1377e-08 AU
q 1.910144271640384 9.9915e-08 AU
i 1.554683108117951 5.1342e-06 deg
node 117.2360306687712 0.00026232 deg
peri 167.8402809374982 0.00026422 deg
M 140.6937027598212 3.5729e-05 deg
tp 2456334.584768400428
(2013-Feb-11.08476840)
0.00011769 JED
period 1192.160559326366
3.26
9.2465e-06
2.532e-08
d
yr
n .3019727478683065 2.3421e-09 deg/d
Q 2.490546753891043 1.2878e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1085  
   data-arc span      13323 days (36.48 yr)  
   first obs. used      1977-09-09  
   last obs. used      2014-03-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53419  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 10:56:21  

Additional Information
 Earth MOID = .893161 AU 
 T_jup = 3.654 
[ 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 14.2 mag n/a MPO267748  

10312 (1990 QT9)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar (675)
Reference: 19990402/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 QT9 = 1977 RY2 = 1992 AQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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