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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314405282568162 4.4305e-08  
a 2.201245582844967 1.2494e-08 AU
q 1.911912700612841 9.6513e-08 AU
i 1.554856010768559 4.9537e-06 deg
node 117.2341851077657 0.00025554 deg
peri 167.9409847578353 0.00025751 deg
M 200.9495089356898 3.4767e-05 deg
tp 2457527.527997079201
(2016-May-19.02799708)
0.00011568 JED
period 1192.892129278602
3.27
1.0156e-05
2.781e-08
d
yr
n .3017875557764884 2.5693e-09 deg/d
Q 2.490578465077093 1.4136e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1101  
   data-arc span      13569 days (37.15 yr)  
   first obs. used      1977-09-09  
   last obs. used      2014-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4998  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:11:50  

Additional Information
 Earth MOID = .896839 AU 
 T_jup = 3.653 
[ 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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