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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314405243978386 4.3749e-08  
a 2.201245580691631 1.1946e-08 AU
q 1.911912707237098 9.5734e-08 AU
i 1.55485609585502 4.9511e-06 deg
node 117.2341957879204 0.00023626 deg
peri 167.940980737242 0.0002382 deg
M 200.9495035628073 3.3735e-05 deg
tp 2457527.528014109390
(2016-May-19.02801411)
0.0001126 JED
period 1192.892127528209
3.27
9.7104e-06
2.659e-08
d
yr
n .301787556219317 2.4566e-09 deg/d
Q 2.490578454146164 1.3516e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1110  
   data-arc span      13649 days (37.37 yr)  
   first obs. used      1977-09-09  
   last obs. used      2015-01-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49852  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:28:36  

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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