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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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314405298365746 4.2703e-08  
a 2.201245583448975 1.1112e-08 AU
q 1.911912697660021 9.4177e-08 AU
i 1.554856187541034 4.9082e-06 deg
node 117.2342220825466 0.00020289 deg
peri 167.9409460217619 0.00020501 deg
M 200.9495103677367 3.2393e-05 deg
tp 2457527.527992550905
(2016-May-19.02799255)
0.00010861 JED
period 1192.892129769585
3.27
9.0328e-06
2.473e-08
d
yr
n .3017875556522754 2.2852e-09 deg/d
Q 2.490578469237928 1.2573e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1254  
   data-arc span      13794 days (37.77 yr)  
   first obs. used      1977-09-09  
   last obs. used      2015-06-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48915  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:04:13  

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 14.3 mag n/a MPO337345  

10312 (1990 QT9)          Discovered 1990-Aug-23 by Holt, H. E. at Palomar
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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